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Gupta N, Mahur BK, Izrayeel AMD, Ahuja A, Rastogi VK. Biomass conversion of agricultural waste residues for different applications: a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:73622-73647. [PMID: 36071366 DOI: 10.1007/s11356-022-22802-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 08/26/2022] [Indexed: 06/15/2023]
Abstract
Agricultural waste residues (agro-waste) are the source of carbohydrates that generally go in vain or remain unused despite their interesting morphological, chemical, and mechanical properties. With rapid urbanization, there is a need to valorize this waste due to limited non-renewable resources. Utilizing agro-waste also prevents the problems like burning and inefficient disposal that otherwise lead to immense pollution worldwide. In addition, conversion of biomass to value-added products like earthen cups, weaving baskets, and bricks is equally beneficial for the rural population as it provides secondary income, creates jobs, and improves rural people's lifestyles. This review paper will discuss an overview of different applications utilizing agro-waste residues. In particular, agro-wastes used as construction material, bio-fertilizers, pulp and paper products, packaging products, tableware, heating applications, biocomposites, nano-cellulosic materials, soil stabilizers, bioplastics, fire-retardant additive, dye removal, and biofuels will be summarized. Finally, several commercially available agro-waste products will also be discussed, emphasizing the circular economy.
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Affiliation(s)
- Nitin Gupta
- Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Bhupender Kumar Mahur
- Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | | | - Arihant Ahuja
- Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Vibhore Kumar Rastogi
- Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India.
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Lobeda K, Jin Q, Wu J, Zhang W, Huang H. Lactic acid production from food waste hydrolysate by Lactobacillus pentosus: Focus on nitrogen supplementation, initial sugar concentration, pH, and fed-batch fermentation. J Food Sci 2022; 87:3071-3083. [PMID: 35669993 DOI: 10.1111/1750-3841.16205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/23/2022] [Accepted: 05/03/2022] [Indexed: 12/01/2022]
Abstract
Lactic acid production from food waste via fermentation is environmentally sustainable. However, the characteristics of food waste fermentation to produce lactic acid are not well understood due to the complexity of food waste. This study aims to understand the effects of key variables on the characteristics of food waste fermentation to maximize lactic acid production. Food waste was enzymatically hydrolyzed and fermented by Lactobacillus pentosus. Key fermentation variables, including nitrogenous nutrient supplementation, initial sugar concentration, and pH, were investigated in batch fermentation to unveil their effects on fermentation titer, yield, and productivity. The results showed that supplementation of 0.25% (w/v%) yeast extract and peptone to the food waste fermentation media significantly improved fermentation titer and productivity, but further increase in the supplementation level did not improve fermentation. Increasing the initial sugar concentration from 40 g/L to 100 g/L increased the fermentation titer from 41.0 g/L to 93.0 g/L and productivity from 0.34 g/L/h to 0.76 g/L/h. pH 6.0 was the optimal pH for the fermentation. At the optimal conditions, food waste fermentation resulted in the highest fermentation titer, yield, and productivity of 106.7 g/L, 1.12 g/g, and 3.09 g/L/h, respectively. The high fermentation yield of 1.12 g/g might be explained by the extra lactic acid production from unidentified compounds in food waste hydrolysates. By applying fed-batch fermentation, the lactic acid concentration reached 157.0 g/L with a yield and overall productivity of 0.92 g/g and 2.0 g/L/h, respectively. Based on the mass balance, a total of 251 kg lactic acid was produced from 1000 kg food waste. PRACTICAL APPLICATION: Food waste is one of the largest municipal solid wastes in the US, and most food waste ends up in landfills, causing significant economic losses and environmental concerns. In this study, we developed a fermentation process to convert food waste into biorenewable lactic acid and demonstrated that food waste is a superior feedstock for fermentation due to its embedded nutrients. Moreover, due to the embedded nutrients in food waste, the supplementation of yeast extract and peptone to fermentation can be reduced by over 50%, which can reduce the operating cost of lactic acid fermentation on an industrial scale.
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Affiliation(s)
- Katherine Lobeda
- Department of Food Science and Technology, Virginia Tech, Blacksburg, Virginia, USA
| | - Qing Jin
- Department of Food Science and Technology, Virginia Tech, Blacksburg, Virginia, USA
| | - Jian Wu
- Department of Food Science and Technology, Virginia Tech, Blacksburg, Virginia, USA
| | - Wencai Zhang
- Department of Mining and Minerals Engineering, Virginia Tech, Blacksburg, Virginia, USA
| | - Haibo Huang
- Department of Food Science and Technology, Virginia Tech, Blacksburg, Virginia, USA
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Bioprocess development for bacterial cellulose biosynthesis by novel Lactiplantibacillus plantarum isolate along with characterization and antimicrobial assessment of fabricated membrane. Sci Rep 2022; 12:2181. [PMID: 35140278 PMCID: PMC8828888 DOI: 10.1038/s41598-022-06117-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 01/12/2022] [Indexed: 11/20/2022] Open
Abstract
Bacterial cellulose (BC) is an ecofriendly biopolymer with diverse commercial applications. Its use is limited by the capacity of bacterial production strains and cost of the medium. Mining for novel organisms with well-optimized growth conditions will be important for the adoption of BC. In this study, a novel BC-producing strain was isolated from rotten fruit samples and identified as Lactiplantibacillus plantarum from 16S rRNA sequencing. Culture conditions were optimized for supporting maximal BC production using one variable at a time, Plackett–Burman design, and Box Behnken design approaches. Results indicated that a modified Yamanaka medium supported the highest BC yield (2.7 g/l), and that yeast extract, MgSO4, and pH were the most significant variables influencing BC production. After optimizing the levels of these variables through Box Behnken design, BC yield was increased to 4.51 g/l. The drug delivery capacity of the produced BC membrane was evaluated through fabrication with sodium alginate and gentamycin antibiotic at four different concentrations. All membranes (normal and fabricated) were characterized by scanning electron microscope, Fourier transform-infrared spectroscopy, X-ray diffraction, and mechanical properties. The antimicrobial activity of prepared composites was evaluated by using six human pathogens and revealed potent antibacterial activity against Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, and Streptococcus mutans, with no detected activity against Pseudomonas aeruginosa and Candida albicans.
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Pawar R, Pawar S, Rathod V. Sequential optimization of xylanase production using Sapindus mukorossi seed waste in Lechevalieria aerocolonigenes. Prep Biochem Biotechnol 2021; 52:135-143. [PMID: 34533428 DOI: 10.1080/10826068.2021.1920035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The production of xylanase from Lechevalieria aerocolonigenes using reetha seed waste as substrate was studied using sequential optimization of fermentation parameters by response surface methodology. Five different lignocellulosic agricultural wastes as a substrate were studied to replace commercially available xylan, amongst which reetha seed waste was found to be the most suitable substrate for xylanase production. A sequential two-stage optimization strategy was used for the fermentation parameter optimization. The Plackett-Burman design was first employed for screening the 6 different physicochemical parameters affecting xylanase production (inoculum concentration, substrate concentration, temperature, pH, media volume, and agitation). The significant factors affecting the xylanase yield were further optimized by Box-Behnken Design in order to obtain the values contributing the highest enzyme yield. Three parameters, namely, temperature, inoculum concentration, and substrate concentration, can be interpreted as the most significant parameters based on the results of Plackett-Burman design. The optimum values by Box-Behnken Design (BBD) are 35 °C temperature, 3 g/L substrate concentration, and inoculum concentration of 4% (v/v) that resulted in maximum xylanase productivity of 5.75 IU/mL at 24 h of the incubation period. Sequential optimization strategy enhanced the xylanase yield by 4.8 fold to that of an unoptimized process.
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Affiliation(s)
- Rohini Pawar
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai, India
| | - Shweta Pawar
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai, India
| | - Virendra Rathod
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai, India
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Production of L (+) Lactic Acid by Lactobacillus casei Ke11: Fed Batch Fermentation Strategies. FERMENTATION-BASEL 2021. [DOI: 10.3390/fermentation7030151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Lactic acid and its derivatives are widely used in pharmaceutical, leather, textile and food industries. However, until now there have been few systematic reports on fed-batch fermentation for efficient production and high concentration of l-lactic acid by lactic acid bacteria. This study describes the obtainment of L (+) lactic acid from sucrose using the Lactobacillus casei Ke11 strain through different feeding strategies using an accessible pH neutralizer such as CaCO3. The exponential feeding strategy can increase lactic acid production and productivity (175.84 g/L and 3.74 g/L/h, respectively) with a 95% yield, avoiding inhibition by high initial substrate concentration and, combined with the selected agent controller, avoids the cellular stress that could be caused by the high osmotic pressure of the culture media. The purification of the acid using charcoal and celite, followed by the use of a cation exchange column proved to be highly efficient, allowing a high yield of lactic acid, high removal of sugars and proteins. The described process shows great potential for the production of lactic acid, as well as the simple, efficient and low-cost purification method. This way, this work is useful to the large-scale fermentation of L. casei Ke11 for production of l-lactic acid.
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Optimization of Media Composition to Maximize the Yield of Exopolysaccharides Production by Lactobacillus rhamnosus Strains. Probiotics Antimicrob Proteins 2021; 12:774-783. [PMID: 31410767 PMCID: PMC7306023 DOI: 10.1007/s12602-019-09581-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Growth media composition is a critical factor influencing the yield of bacterial exopolysaccharides (EPSs), which have attracted the interest of researchers around the world due to their diverse physicochemical and biological properties. This work presents the optimization of media for EPS synthesis by three Lactobacillus rhamnosus strains, namely ŁOCK 0943, ŁOCK 0935, and OM-1. The optimized media led to a more than 13-fold increase in EPS yield for L. rhamnosus ŁOCK 0943 (from 85 to 1138.2 mg/L), an almost 9-fold increase for L. rhamnosus ŁOCK 0935 (from 103.67 to 900 mg/L), and a more than 7-fold increase for L. rhamnosus OM-1 (from 133.67 to 987.84 mg/L) as compared to cultures in standard MRS medium (de Man, Rogosa, and Sharpe). It has been found that the main medium-related determinant of EPS synthesis by the studied L. rhamnosus strains are the carbon source-in this case, it was fructose and sucrose.
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Improvement of Enantiomeric l-Lactic Acid Production from Mixed Hexose-Pentose Sugars by Coculture of Enterococcus mundtii WX1 and Lactobacillus rhamnosus SCJ9. FERMENTATION-BASEL 2021. [DOI: 10.3390/fermentation7020095] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Among 39 pentose-utilizing lactic acid bacteria (LAB) selected from acid-forming bacteria from the midgut of Eri silkworm, the isolate WX1 was selected with the highest capability to produce optically pure l-lactic acid (l-LA) from glucose, xylose and arabinose with furfural-tolerant properties. The isolate WX1 was identified as Enterococcus mundtii based on 16S rDNA sequence analysis. The conversion yields of l-LA from glucose and xylose by E. mundtii WX1 were 0.97 and 0.68 g/g substrate, respectively. Furthermore, l-LA production by E. mundtii WX1 in various glucose-xylose mixtures indicated glucose repression effect on xylose consumption. The coculture of E. mundtii WX1 and Lactobacillus rhamnosus SCJ9, a homofermentative LAB capable of producing l-LA from glucose clearly showed an improvement of l-LA production from 30 g/L total glucose-xylose (6:4). The results from Plackett–Burman design (PBD) indicated that Tween 80, MnSO4 and yeast extract (YE) were three medium components that significantly influenced (p < 0.05) l-LA production using the coculture strategy in the presence of 2 g/L furfural. Optimal concentrations of these variables revealed by central composite design (CCD) and response surface methodology (RSM) were 20.61 g/L YE, 1.44 g/L Tween 80 and 1.27 g/L MnSO4. Based on the optimized medium with 30 g/L total glucose-xylose (6:4), the maximum experimental l-LA value of 23.59 g/L reflecting 0.76 g/g substrate were achieved from 48 h fermentation at 37 °C. l-LA produced by coculture cultivated under standard MRS medium and new optimized conditions were 1.28 and 1.53 times higher than that obtained from single culture by E. mundtii WX1, respectively. This study provides the foundations for practical applications of coculture in bioconversion of lignocellulose particularly glucose-xylose-rich corn stover to l-LA.
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Bacterial valorization of pulp and paper industry process streams and waste. Appl Microbiol Biotechnol 2021; 105:1345-1363. [PMID: 33481067 DOI: 10.1007/s00253-021-11107-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/28/2020] [Accepted: 01/08/2021] [Indexed: 10/22/2022]
Abstract
The pulp and paper industry is a major source of lignocellulose-containing streams. The components of lignocellulose material are lignin, hemicellulose, and cellulose that may be hydrolyzed into their smaller components and used as feedstocks for valorization efforts. Much of this material is contained in underutilized streams and waste products, such as black liquor, pulp and paper sludge, and wastewater. Bacterial fermentation strategies have suitable potential to upgrade lignocellulosic biomass contained in these streams to value-added chemicals. Bacterial conversion allows for a sustainable and economically feasible approach to valorizing these streams, which can bolster and expand applications of the pulp and paper industry. This review discusses the composition of pulp and paper streams, bacterial isolates from process streams that can be used for lignocellulose biotransformations, and technological approaches for improving valorization efforts. KEY POINTS: • Reviews the conversion of pulp and paper industry waste by bacterial isolates. • Metabolic pathways for the breakdown of lignocellulose components. • Methods for isolating bacteria, determining value-added products, and increasing product yields.
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Chaudhari SR, Shirkhedkar AA. Application of Plackett-Burman and central composite designs for screening and optimization of factor influencing the chromatographic conditions of HPTLC method for quantification of efonidipine hydrochloride. J Anal Sci Technol 2020. [DOI: 10.1186/s40543-020-00246-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
We report here an analytical method for expeditious estimation of efonidipine hydrochloride in tablet formulation with statistical screening and optimization designs using NP-HPTLC. TLC silica gel 60 F254 aluminum plates and ethyl acetate to dichloromethane to triethylamine (3:2:0.5 v/v) were chosen for chromatographic separation of efonidipine hydrochloride. The Rf value for efonidipine hydrochloride turned out to be 0.35 ± 0.25 and quantitative evaluation was done at 251 nm. Plackett-Burman and face-centered central composite design (CCD) were used to obtain the most peak area and well-resolved compact band with an adequate retention factor of efonidipine hydrochloride. Plackett-Burman design at two-level with six independent variables has been employed for screening of prominent factors that affect the responses. The prominent factors have been selected and are optimized through face-centered CCD. The results obtained from face-centered CCD showed that most peak area can be obtained with development distance 8.50 cm and chamber saturation 17 min. Furthermore, the current NP-HPTLC investigation has been validated according to the ICH guidelines for accuracy, precision, sensitivity, robustness, ruggedness, and specificity. The detection and quantification limit was found that 10.41 ng and 31.57 ng, suggesting that the analysis could be accurately and precisely detected the analyte up to nanogram quantity. The current NP-HPTLC investigation is rugged, accurate, and highly sensitive and could be used for routine analysis of efonidipine hydrochloride.
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Abedi E, Hashemi SMB. Lactic acid production - producing microorganisms and substrates sources-state of art. Heliyon 2020; 6:e04974. [PMID: 33088933 PMCID: PMC7566098 DOI: 10.1016/j.heliyon.2020.e04974] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/08/2020] [Accepted: 09/16/2020] [Indexed: 01/18/2023] Open
Abstract
Lactic acid is an organic compound produced via fermentation by different microorganisms that are able to use different carbohydrate sources. Lactic acid bacteria are the main bacteria used to produce lactic acid and among these, Lactobacillus spp. have been showing interesting fermentation capacities. The use of Bacillus spp. revealed good possibilities to reduce the fermentative costs. Interestingly, lactic acid high productivity was achieved by Corynebacterium glutamicum and E. coli, mainly after engineering genetic modification. Fungi, like Rhizopus spp. can metabolize different renewable carbon resources, with advantageously amylolytic properties to produce lactic acid. Additionally, yeasts can tolerate environmental restrictions (for example acidic conditions), being the wild-type low lactic acid producers that have been improved by genetic manipulation. Microalgae and cyanobacteria, as photosynthetic microorganisms can be an alternative lactic acid producer without carbohydrate feed costs. For lactic acid production, it is necessary to have substrates in the fermentation medium. Different carbohydrate sources can be used, from plant waste as molasses, starchy, lignocellulosic materials as agricultural and forestry residues. Dairy waste also can be used by the addition of supplementary components with a nitrogen source.
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Affiliation(s)
- Elahe Abedi
- Department of Food Science and Technology, College of Agriculture, Fasa University, Fasa, Iran
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Coelho LF, Sass DC, Avila Neto PM, Contiero J. Evaluation of a new method for (L+) lactic acid purification, using ethyl ether. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101653] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Thazeem B, Umesh M, Mani VM, Beryl GP, Preethi K. Biotransformation of bovine tannery fleshing into utilizable product with multifunctionalities. BIOCATAL BIOTRANSFOR 2020. [DOI: 10.1080/10242422.2020.1786071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Basheer Thazeem
- Vellalar Institutions (Maruthi Nagar Campus), Thindal, India
| | - Mridul Umesh
- Department of Life Sciences, CHRIST (Deemed to be University), Bengaluru, India
| | - Vellingiri Manon Mani
- Department of Biotechnology, Rathnavel Subramaniam College of Arts and Science, Coimbatore, India
| | - Goldy Primo Beryl
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, India
| | - Kathirvel Preethi
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, India
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Shahid MG, Nadeem M, Gulzar A, Saleem M, Rehman HU, Ghafoor GZ, Hayyat MU, Shahzad L, Arif R, Nelofer R. Novel Ergot Alkaloids Production from Penicillium citrinum Employing Response Surface Methodology Technique. Toxins (Basel) 2020; 12:toxins12070427. [PMID: 32610508 PMCID: PMC7405006 DOI: 10.3390/toxins12070427] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/28/2020] [Accepted: 05/30/2020] [Indexed: 11/23/2022] Open
Abstract
Ergot alkaloids are novel pharmaceutical and therapeutic agents synthesized in this study using fungal species Penicillium citrinum. To get the maximum yield of ergot alkaloids a statistical process of response surface methodology was employed using surface culture fermentation technique. Initially, the strain of Penicillium was improved using physical (ultraviolet (UV) and chemical (ethyl methane sulfonate (EMS) treatments to get the maximum yield of ergot alkaloids through surface culture fermentation technique. After improving the strain, survival rate of colonies of Penicillium citrinum treated with UV and EMS was observed. Only 2.04% living colonies were observed after 150 min of exposure of Penicillium citrinum in UV light and 3.2% living colonies were observed after 20 min of the exposure in EMS. The mutated strains of Penicillium citrinum were screened for their production of ergot alkaloids and after fermentation experiments, maximum yield was obtained from PCUV-4 and PCEMS-1 strains. After strain improvement, Plackett–Burman design (PBD) and Box–Behnken design (BBD) of RSM were employed and 10-fold yield enhancement (35.60 mg/100 mL) of ergot alkaloids was achieved. This enhancement in yield of ergot alkaloids proved the positive impacts of RSM and UV on the yield of ergot alkaloids. The study provides a cost effective, economical and sustainable process to produce medically important ergot alkaloids which can be used in various pharmaceutical formulations to treat human diseases.
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Affiliation(s)
| | - Muhammad Nadeem
- Food and Biotechnology Research Center, PCSIR Laboratories Complex, Lahore 54000, Pakistan; (M.N.); (R.N.)
| | - Ahmed Gulzar
- Department of Economics, University of Management & Technology, Lahore 54000, Pakistan; (A.G.); (H.u.R.)
| | - Muhammad Saleem
- Department of Botany, University of the Punjab, New Campus, Lahore 54000, Pakistan; (M.S.); (R.A.)
| | - Hafeez ur Rehman
- Department of Economics, University of Management & Technology, Lahore 54000, Pakistan; (A.G.); (H.u.R.)
| | - Gul Zareen Ghafoor
- Sustainable Development Study Center, GC University, Lahore 54000, Pakistan; (G.Z.G.); (M.U.H.); (L.S.)
| | - Muhammad Umar Hayyat
- Sustainable Development Study Center, GC University, Lahore 54000, Pakistan; (G.Z.G.); (M.U.H.); (L.S.)
| | - Laila Shahzad
- Sustainable Development Study Center, GC University, Lahore 54000, Pakistan; (G.Z.G.); (M.U.H.); (L.S.)
| | - Rabia Arif
- Department of Botany, University of the Punjab, New Campus, Lahore 54000, Pakistan; (M.S.); (R.A.)
| | - Rubina Nelofer
- Food and Biotechnology Research Center, PCSIR Laboratories Complex, Lahore 54000, Pakistan; (M.N.); (R.N.)
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Zhou J, Yin L, Wu C, Wu S, Lu J, Fang H, Qian Y. Screening of an Alkaline CMCase-Producing Strain and the Optimization of its Fermentation Condition. Curr Pharm Biotechnol 2020; 21:1304-1315. [PMID: 31995003 DOI: 10.2174/1389201021666200129123818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/02/2019] [Accepted: 07/18/2019] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Alkaline Carboxymethyl Cellulase (CMCase) is an attractive enzyme for the textile, laundry, pulp, and paper industries; however, commercial preparations with sufficient activity at alkaline conditions are scarce. METHODS High CMCase-producing bacterial isolate, SX9-4, was screened out from soil bacteria, which was identified as Flavobacterium sp. on the basis of 16S rDNA sequencing. RESULTS The optimum pH and temperature for CMCase reaction were 8.0 and 55°C, respectively. Alkaline CMCase was stable over wide pH (3.0-10.6) and temperature (25-55°C) ranges. Enzyme activity was significantly inhibited by the bivalent cations Mn2+ and Cu2+, and was activated by Fe2+. To improve the alkaline CMCase production of SX9-4, fermentation parameters were selected through onefactor- at-a-time and further carried out by response surface methodologies based on a central composite design. CONCLUSION High CMCase production (57.18 U/mL) was achieved under the optimal conditions: 10.53 g/L carboxymethylcellulose sodium, 7.74 g/L glucose, 13.71 g/L peptone, and 5.27 g/L ammonium oxalate.
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Affiliation(s)
- Junmei Zhou
- School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
| | - Lianghong Yin
- School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
| | - Chenbin Wu
- School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
| | - Sijia Wu
- School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
| | - Jidong Lu
- School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
| | - Hailing Fang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, 210014, China
| | - Yongchang Qian
- School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou 311300, China
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Application of Plackett-Burman Design in Screening Casein and Prebiotics for the Production of ACE Inhibitory Peptides from Cow Milk Fermented by L. bulgaricus LB6. ACTA UNIVERSITATIS CIBINIENSIS. SERIES E: FOOD TECHNOLOGY 2019. [DOI: 10.2478/aucft-2019-0012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract
Prebiotics can play an important role in functional foods. In this paper, casein and five probiotics were selected to study the effects on ACE inhibitory peptides in fermented milk of L. bulgaricus LB6 through Plackett-Burman design, so as to improve the production of ACE inhibitory peptides. The results showed that xylooligosaccharides (XOS), fructosaccharide (FOS) and inulin had the most significant effect on the yield of ACE inhibitory peptides. Optimization added the amount of the three prebiotics added, that is, the amount of XOS added was 0.7%, the amount of FOS added was 1.1%, and the amount of inulin added was 0.7%. It provides a basis for subsequent optimization experiments.
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A Sight to Wheat Bran: High Value-Added Products. Biomolecules 2019; 9:biom9120887. [PMID: 31861140 PMCID: PMC6995506 DOI: 10.3390/biom9120887] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/06/2019] [Accepted: 12/10/2019] [Indexed: 11/17/2022] Open
Abstract
Recently more consideration has been given to the use of renewable materials and agricultural residues. Wheat production is increasing yearly and correspondingly, the volume of by-products from the wheat process is increasing, as well. It is important to find the use of the residuals for higher value-added products, and not just for the food industry or animal feed purposes as it is happening now. Agricultural residue of the roller milled wheat grain is a wheat bran description. The low-cost of wheat bran and its composition assortment provides a good source of substrate for various enzymes and organic acids production and other biotechnological applications. The main purpose of this review article is to look into recent trends, developments, and applications of wheat bran.
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Saleh AK, Soliman NA, Farrag AA, Ibrahim MM, El-Shinnawy NA, Abdel-Fattah YR. Statistical optimization and characterization of a biocellulose produced by local Egyptian isolate Komagataeibacter hansenii AS.5. Int J Biol Macromol 2019; 144:198-207. [PMID: 31843613 DOI: 10.1016/j.ijbiomac.2019.12.103] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 10/30/2019] [Accepted: 12/12/2019] [Indexed: 11/16/2022]
Abstract
Optimization of the culture parameters used for biocellulose (BC) production by a previously isolated bacterial strain (Komagataeibacter hansenii AS.5) was carried out. The effect of nine culture parameters on BC production was evaluated by implementing the Plackett-Burman design, and the results revealed that, the most significant variables affecting BC production were MgSO4, ethanol, pH and yeast extract. A three-level and four-factor Box-Behnken design was applied to determine the optimum level of each significant variable. According to the results of the Plackett-Burman (PBD) and Box-Behnken designs (BBD), the following medium composition and parameters were calculated to be optimum (g/l): glucose 25, yeast extract 13, MgSO4 0.15, KH2PO4 2, ethanol 7.18 ml/l, pH 5.5, inoclume size 7%, cultivation temperature 20 °C and incubation time 9 days. Characterization of purified BC was performed to determine the network morphology by scanning electron microscopy, crystallinity by X-ray diffraction, chemical structure and functional groups by Fourier-transform infrared spectroscopy, thermal stability by thermogravimetric analysis and mechanical properties such as Young's modulus, tensile strength and elongation at beak % of BC.
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Affiliation(s)
- Ahmed K Saleh
- Cellulose and Paper Department, National Research Centre, El-Tahrir St., Dokki, Giza, Egypt.
| | - Nadia A Soliman
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technological Applications, Alexandria, Egypt
| | - Ayman A Farrag
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Egypt
| | - Maha M Ibrahim
- Cellulose and Paper Department, National Research Centre, El-Tahrir St., Dokki, Giza, Egypt
| | - Nashwa A El-Shinnawy
- Zoology Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, Egypt
| | - Yasser R Abdel-Fattah
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technological Applications, Alexandria, Egypt
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18
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Tarraran L, Mazzoli R. Alternative strategies for lignocellulose fermentation through lactic acid bacteria: the state of the art and perspectives. FEMS Microbiol Lett 2019; 365:4995910. [PMID: 30007320 DOI: 10.1093/femsle/fny126] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 05/11/2018] [Indexed: 12/22/2022] Open
Abstract
Lactic acid bacteria (LAB) have a long history in industrial processes as food starters and biocontrol agents, and also as producers of high-value compounds. Lactic acid, their main product, is among the most requested chemicals because of its multiple applications, including the synthesis of biodegradable plastic polymers. Moreover, LAB are attractive candidates for the production of ethanol, polyhydroalkanoates, sweeteners and exopolysaccharides. LAB generally have complex nutritional requirements. Furthermore, they cannot directly ferment inexpensive feedstocks such as lignocellulose. This significantly increases the cost of LAB fermentation and hinders its application in the production of high volumes of low-cost chemicals. Different strategies have been explored to extend LAB fermentation to lignocellulosic biomass. Fermentation of lignocellulose hydrolysates by LAB has been frequently reported and is the most mature technology. However, current economic constraints of this strategy have driven research for alternative approaches. Co-cultivation of LAB with native cellulolytic microorganisms may reduce the high cost of exogenous cellulase supplementation. Special attention is given in this review to the construction of recombinant cellulolytic LAB by metabolic engineering, which may generate strains able to directly ferment plant biomass. The state of the art of these strategies is illustrated along with perspectives of their applications to industrial second generation biorefinery processes.
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Affiliation(s)
- Loredana Tarraran
- Structural and Functional Biochemistry, Laboratory of Proteomics and Metabolic Engineering of Prokaryotes, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Torino, Italy
| | - Roberto Mazzoli
- Structural and Functional Biochemistry, Laboratory of Proteomics and Metabolic Engineering of Prokaryotes, Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123 Torino, Italy
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Zou X, Xu K, Wen H, Xue Y, Qu Y, Li Y. Efficient microalgae harvesting using a thermal flotation method with response surface methodology. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:426-436. [PMID: 31596254 DOI: 10.2166/wst.2019.287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thermal pre-flocculation to enable dispersed air flotation is an economical and ecofriendly technology for harvesting microalgae from water. However, the underlying mechanism and optimal conditions for this method remain unclear. In this study, Chlorella vulgaris (C. vulgaris) and Scenedesmus obliquus (S. obliquus) were harvested using a thermal flotation process. The surface structure and characteristics (morphology, electricity, and hydrophobicity) of the microalgae were analyzed using FT-IR (Fourier transform infrared spectroscopy), SEM (scanning electron microscopy), zeta potential, and a hydrophobic test. Further, response surface methodology (RSM) was used to optimize the flotation process. The hydrophobicity of S. obliquus exceeded that of C. vulgaris; as such, under the thermal pre-flocculation, S. obliquus (88.16%) was harvested more efficiently than C. vulgaris (47.16%). Thermal pre-flocculation denatured the lipids, carbohydrate, and proteins of microalgal cell surfaces. This resulted in a decrease in the electrostatic repulsion between the cells and air bubbles. The highest harvesting efficiency was 91.96% at 70 °C, 1,412 rpm, and 13.36 min. The results of this study demonstrate the potential for economic and ecofriendly harvesting of microalgae for biofuels and other bioproducts industries.
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Affiliation(s)
- Xiaotong Zou
- School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China E-mail:
| | - Kaiwei Xu
- School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China E-mail:
| | - Hao Wen
- School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China E-mail:
| | - Yating Xue
- School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China E-mail:
| | - Yanhui Qu
- School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China E-mail:
| | - Yanpeng Li
- School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China E-mail: ; Key Laboratory of Subsurface Hydrology and Ecology in Arid Areas, Ministry of Education, Xi'an 710054, China and Shaanxi Key Laboratory of Land Consolidation, Xi'an 710075, China
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20
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Lim YH, Foo HL, Loh TC, Mohamad R, Abdul Rahim R, Idrus Z. Optimized medium via statistical approach enhanced threonine production by Pediococcus pentosaceus TL-3 isolated from Malaysian food. Microb Cell Fact 2019; 18:125. [PMID: 31331395 PMCID: PMC6643317 DOI: 10.1186/s12934-019-1173-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 07/06/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Threonine is an essential amino acid that is extensively used in livestock industry as feed supplement due to its pronounced effect in improving the growth performance of animals. Application of genetically engineered bacteria for amino acid production has its share of controversies after eosinophils myalgia syndrome outbreak in 1980s. This has urged for continuous search for a food grade producer as a safer alternative for industrial amino acid production. Lactic acid bacteria (LAB) appear as an exceptional candidate owing to their non-pathogenic nature and reputation of Generally Recognized as Safe (GRAS) status. Recently, we have identified a LAB, Pediococcus pentosaceus TL-3, isolated from Malaysian food as a potential threonine producer. Thus, the objective of this study was to enhance the threonine production by P. pentosaceus TL-3 via optimized medium developed by using Plackett-Burman design (PBD) and central composite design (CCD). RESULTS Molasses, meat extract, (NH4)2SO4, and MnSO4 were identified as the main medium components for threonine production by P. pentosaceus TL-3. The optimum concentration of molasses, meat extract, (NH4)2SO4 and MnSO4 were found to be 30.79 g/L, 25.30 g/L, 8.59 g/L, and 0.098 g/L respectively based on model obtained in CCD with a predicted net threonine production of 123.07 mg/L. The net threonine production by P. pentosaceus TL-3 in the optimized medium was enhanced approximately 2 folds compared to the control. CONCLUSIONS This study has revealed the potential of P. pentosaceus TL-3 as a safer alternative to produce threonine. Additionally, the current study has identified the key medium components affecting the production of threonine by P. pentosaceus TL-3, followed by optimization of their concentrations by means of statistical approach. The findings of this study could act as a guideline for the future exploration of amino acid production by LAB.
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Affiliation(s)
- Ye Heng Lim
- Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Hooi Ling Foo
- Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
| | - Teck Chwen Loh
- Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
| | - Rosfarizan Mohamad
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Raha Abdul Rahim
- Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Zulkifli Idrus
- Department of Animal Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
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21
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Jiang C, Sun G, Zhou Z, Bao Z, Lang X, Pang J, Sun Q, Li Y, Zhang X, Feng C, Chen X. Optimization of the preparation conditions of thermo-sensitive chitosan hydrogel in heterogeneous reaction using response surface methodology. Int J Biol Macromol 2018; 121:293-300. [PMID: 30287376 DOI: 10.1016/j.ijbiomac.2018.09.210] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 09/22/2018] [Accepted: 09/27/2018] [Indexed: 12/15/2022]
Abstract
A thermo-sensitive hydroxybutyl chitosan (HBC) hydrogel was prepared by using 1,2‑butene oxide as an etherification modifying agent. To obtain the maximum yield of HBC, response surface methodology (RSM) was applied to optimize its preparation conditions. Key factors were chosen firstly by Plackett-Burman design (PBD) experiments, such as the concentration of NaOH, the ratio of isopropanol to water and reaction temperature. Steepest ascent experiments were employed to reach the top region of the response and determine the appropriate levels of three key factors. A three-level-three-variable Box-Behnken design (BBD) was used to further optimize the synthesis parameters. The results indicated that when the concentration of NaOH and the ratio of isopropyl alcohol to water were 40.65% and 2.68:1 at reaction temperature of 59 °C, respectively, the yield of HBC production was 5.897 ± 0.112 g and close to the predicted value (6.002 g), which demonstrated that the effectiveness of BBD model and the controllability for the yield of HBC in the heterogeneous reaction system.
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Affiliation(s)
- Changqing Jiang
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Guohui Sun
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Zhongzheng Zhou
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Zixian Bao
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Science, Qingdao 266101, PR China
| | - Xuqian Lang
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Jianhui Pang
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Qingjie Sun
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Yang Li
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Xin Zhang
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
| | - Chao Feng
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China.
| | - Xiguang Chen
- College of Marine Life Science, Ocean University of China, Qingdao 266003, PR China
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22
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Low-cost effective culture medium optimization for d-lactic acid production by Lactobacillus coryniformis subsp. torquens under oxygen-deprived condition. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1362-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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23
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Alves de Oliveira R, Komesu A, Vaz Rossell CE, Maciel Filho R. Challenges and opportunities in lactic acid bioprocess design—From economic to production aspects. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.03.003] [Citation(s) in RCA: 161] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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24
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High-titer and productivity of l-(+)-lactic acid using exponential fed-batch fermentation with Bacillus coagulans arr4, a new thermotolerant bacterial strain. 3 Biotech 2018; 8:213. [PMID: 29651378 DOI: 10.1007/s13205-018-1232-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 06/03/2017] [Indexed: 10/17/2022] Open
Abstract
Bacillus coagulans arr4 is a thermotolerant microorganism with great biotechnological potential for l-(+)-lactic acid production from granulated sugar and yeast extract. The highest l-(+)-lactic acid production was obtained with Ca(OH)2. The maximum production of l-(+)-lactic acid (206.81 g/L) was observed in exponential feeding using granulated sugar solution (900 g/L) and yeast extract (1%) at 50 °C, pH 6.5, and initial granulated sugar concentration of 100 g/L at 39 h. 5.3 g/L h productivity and 97% yield were observed, and no sugar remained. Comparing the simple batch with exponential fed-batch fermentation, the l(+) lactic acid production was improved in 133.22% and dry cell weight was improved in 83.29%, using granulated sugar and yeast extract. This study presents the highest productivity of lactic acid ever observed in the literature, on the fermentation of thermotolerant Bacillus sp. as well as an innovative and high-efficiency purification technology, using low-cost substances as Celite and charcoal. The recovery of lactic acid was 86%, with 100% protein removal, and the fermentation medium (brown color) became a colorless solution.
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25
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Mukherjee S, Sahu P, Halder G. Microbial remediation of fluoride-contaminated water via a novel bacterium Providencia vermicola (KX926492). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 204:413-423. [PMID: 28915476 DOI: 10.1016/j.jenvman.2017.08.051] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 07/04/2017] [Accepted: 08/29/2017] [Indexed: 06/07/2023]
Abstract
The present study emphasizes on the isolation, identification and characterization of a fluoride-resistant bacteria from contaminated groundwater of a severely affected rural area. The isolate was investigated for its possible role towards bioremediation of fluoride. Bacterial growth was determined by various carbon and nitrogen sources. Influence of parameters like initial fluoride concentration (5-25 mg L-1), pH (3-9) and temperature (15-42 °C) on fluoride removal by Providencia sp. KX926492 were also examined. SEM, EDX and FTIR were performed to analyse the surface texture, elemental composition and functional groups of the bacterium involved in the uptake of fluoride ions. 16S rRNA sequencing was performed to identify the isolate. Plackett-Burman design was employed to optimize the various parametric conditions of fluoride removal. Maximum removal of 82% was achieved when the initial fluoride concentration was 20 mgL-1 at pH 7 and 37 °C temperature with dextrose and nitrogen concentrations of 5 and 4 g per 50 mL respectively. Results suggested that Providencia vermicola (KX926492) could be a potential bacterium in removal of fluoride from contaminated water.
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Affiliation(s)
- Shraboni Mukherjee
- Chemical Engg Department, National Institute of Technology, Durgapur, 713209, India
| | - Priyanka Sahu
- Chemical Engg Department, National Institute of Technology, Durgapur, 713209, India
| | - Gopinath Halder
- Chemical Engg Department, National Institute of Technology, Durgapur, 713209, India.
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26
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Sun L, Lu Z, Li J, Sun F, Huang R. Comparative genomics and transcriptome analysis of Lactobacillus rhamnosus ATCC 11443 and the mutant strain SCT-10-10-60 with enhanced L-lactic acid production capacity. Mol Genet Genomics 2017; 293:265-276. [PMID: 29159508 DOI: 10.1007/s00438-017-1379-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 10/02/2017] [Indexed: 01/01/2023]
Abstract
Mechanisms for high L-lactic acid production remain unclear in many bacteria. Lactobacillus rhamnosus SCT-10-10-60 was previously obtained from L. rhamnosus ATCC 11443 via mutagenesis and showed improved L-lactic acid production. In this study, the genomes of strains SCT-10-10-60 and ATCC 11443 were sequenced. Both genomes are a circular chromosome, 2.99 Mb in length with a GC content of approximately 46.8%. Eight split genes were identified in strain SCT-10-10-60, including two LytR family transcriptional regulators, two Rex redox-sensing transcriptional repressors, and four ABC transporters. In total, 60 significantly up-regulated genes (log2fold-change ≥ 2) and 39 significantly down-regulated genes (log2fold-change ≤ - 2) were identified by a transcriptome comparison between strains SCT-10-10-60 and ATCC 11443. KEGG pathway enrichment analysis revealed that "pyruvate metabolism" was significantly different (P < 0.05) between the two strains. The split genes and the differentially expressed genes involved in the "pyruvate metabolism" pathway are probably responsible for the increased L-lactic acid production by SCT-10-10-60. The genome and transcriptome sequencing information and comparison of SCT-10-10-60 with ATCC 11443 provide insights into the anabolism of L-lactic acid and a reference for improving L-lactic acid production using genetic engineering.
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Affiliation(s)
- Liang Sun
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China
- State Key Laboratory of Non-Food Biomass and Enzyme Technology, National Engineering Research Center for Non-Food Biorefinery, Guangxi Key Laboratory of Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China
| | - Zhilong Lu
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China
- State Key Laboratory of Non-Food Biomass and Enzyme Technology, National Engineering Research Center for Non-Food Biorefinery, Guangxi Key Laboratory of Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China
| | - Jianxiu Li
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China
- State Key Laboratory of Non-Food Biomass and Enzyme Technology, National Engineering Research Center for Non-Food Biorefinery, Guangxi Key Laboratory of Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China
| | - Feifei Sun
- State Key Laboratory of Non-Food Biomass and Enzyme Technology, National Engineering Research Center for Non-Food Biorefinery, Guangxi Key Laboratory of Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China
| | - Ribo Huang
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China.
- State Key Laboratory of Non-Food Biomass and Enzyme Technology, National Engineering Research Center for Non-Food Biorefinery, Guangxi Key Laboratory of Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China.
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27
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Kara Ali M, Outili N, Ait Kaki A, Cherfia R, Benhassine S, Benaissa A, Kacem Chaouche N. Optimization of Baker's Yeast Production on Date Extract Using Response Surface Methodology (RSM). Foods 2017; 6:foods6080064. [PMID: 28783118 PMCID: PMC5575639 DOI: 10.3390/foods6080064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 08/03/2017] [Accepted: 08/03/2017] [Indexed: 02/04/2023] Open
Abstract
This work aims to study the production of the biomass of S. cerevisiae on an optimized medium using date extract as the only carbon source in order to obtain a good yield of the biomass. The biomass production was carried out according to the central composite experimental design (CCD) as a response surface methodology using Minitab 16 software. Indeed, under optimal biomass production conditions, temperature (32.9 °C), pH (5.35) and the total reducing sugar extracted from dates (70.93 g/L), S. cerevisiae produced 40 g/L of their biomass in an Erlenmeyer after only 16 h of fermentation. The kinetic performance of the S. cerevisiae strain was investigated with three unstructured models i.e., Monod, Verhulst, and Tessier. The conformity of the experimental data fitted showed a good consistency with Monod and Tessier models with R2 = 0.945 and 0.979, respectively. An excellent adequacy was noted in the case of the Verhulst model (R2 = 0.981). The values of kinetic parameters (Ks, Xm, μm, p and q) calculated by the Excel software, confirmed that Monod and Verhulst were suitable models, in contrast, the Tessier model was inappropriately fitted with the experimental data due to the illogical value of Ks (−9.434). The profiles prediction of the biomass production with the Verhulst model, and that of the substrate consumption using Leudeking Piret model over time, demonstrated a good agreement between the simulation models and the experimental data.
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Affiliation(s)
- Mounira Kara Ali
- Laboratoire de Mycologie, de Biotechnologie et de l'Activité Microbienne (LaMyBAM), Département de Biologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université Frères Mentouri Constantine 1, Constantine 25000, Algeria.
| | - Nawel Outili
- Laboratoire de Génie des Procédés de l'Environnement, Faculté du Génie des Procédés, Université Constantine 3, Constantine 25000, Algeria.
| | - Asma Ait Kaki
- Département de Biologie, Faculté des Sciences de la Nature et de la Vie, Université M'hamed Bougera, Boumerdess 35000, Algeria.
| | - Radia Cherfia
- Laboratoire de Mycologie, de Biotechnologie et de l'Activité Microbienne (LaMyBAM), Département de Biologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université Frères Mentouri Constantine 1, Constantine 25000, Algeria.
| | - Sara Benhassine
- Laboratoire de Mycologie, de Biotechnologie et de l'Activité Microbienne (LaMyBAM), Département de Biologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université Frères Mentouri Constantine 1, Constantine 25000, Algeria.
| | - Akila Benaissa
- Laboratoire de Génie des Procédés de l'Environnement, Faculté du Génie des Procédés, Université Constantine 3, Constantine 25000, Algeria.
| | - Noreddine Kacem Chaouche
- Laboratoire de Mycologie, de Biotechnologie et de l'Activité Microbienne (LaMyBAM), Département de Biologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université Frères Mentouri Constantine 1, Constantine 25000, Algeria.
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28
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Zhang J, Zhao L, Gao B, Wei W, Wang H, Xie J. Protopectinase production byPaenibacillus polymyxaZ6 and its application in pectin extraction from apple pomace. J FOOD PROCESS PRES 2017. [DOI: 10.1111/jfpp.13367] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jian Zhang
- State Key Laboratory of Bioreactor Engineering, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Li Zhao
- State Key Laboratory of Bioreactor Engineering, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Bei Gao
- State Key Laboratory of Bioreactor Engineering, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Wei Wei
- State Key Laboratory of Bioreactor Engineering, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Hualei Wang
- State Key Laboratory of Bioreactor Engineering, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Jingli Xie
- State Key Laboratory of Bioreactor Engineering, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
- Shanghai Collaborative Innovation Center for Biomanufacturing (SCICB); Shanghai 200237 People's Republic of China
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29
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Zhang Y, Wang L, Chen H. Correlations of medium physical properties and process performance in solid-state fermentation. Chem Eng Sci 2017. [DOI: 10.1016/j.ces.2017.02.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Lizardi-Jiménez MA, Hernández-Martínez R. Solid state fermentation (SSF): diversity of applications to valorize waste and biomass. 3 Biotech 2017; 7:44. [PMID: 28444587 DOI: 10.1007/s13205-017-0692-y] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 03/13/2017] [Indexed: 12/01/2022] Open
Abstract
Solid state fermentation is currently used in a range of applications including classical applications, such as enzyme or antibiotic production, recently developed products, such as bioactive compounds and organic acids, new trends regarding bioethanol and biodiesel as sources of alternative energy, and biosurfactant molecules with environmental purposes of valorising unexploited biomass. This work summarizes the diversity of applications of solid state fermentation to valorize biomass regarding alternative energy and environmental purposes. The success of applying solid state fermentation to a specific process is affected by the nature of specific microorganisms and substrates. An exhaustive number of microorganisms able to grow in a solid matrix are presented, including fungus such as Aspergillus or Penicillum for antibiotics, Rhizopus for bioactive compounds, Mortierella for biodiesel to bacteria, Bacillus for biosurfactant production, or yeast for bioethanol.
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Affiliation(s)
- M A Lizardi-Jiménez
- CONACYT-Instituto Tecnológico Superior de Tierra Blanca, Av. Veracruz S/N Esq., Héroes de Puebla, Colonia Pemex, C.P. 95180, Tierra Blanca, Veracruz, Mexico
| | - R Hernández-Martínez
- CONACYT-Instituto Tecnológico Superior de Tierra Blanca, Av. Veracruz S/N Esq., Héroes de Puebla, Colonia Pemex, C.P. 95180, Tierra Blanca, Veracruz, Mexico.
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Pandey KR, Joshi C, Vakil BV. Statistical optimization for enhanced yields of probiotic Bacillus coagulans and its phage resistant mutants followed by kinetic modelling of the process. SPRINGERPLUS 2016; 5:1654. [PMID: 27722071 PMCID: PMC5035293 DOI: 10.1186/s40064-016-3325-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 09/15/2016] [Indexed: 11/29/2022]
Abstract
Probiotics are microorganisms which when administered in adequate amounts confer health benefits to the host. A leading pharmaceutical company producing Bacillus coagulans as a probiotic was facing the problem of recurring phage attacks. Two mutants viz. B. co PIII and B. co MIII that were isolated as phage resistant mutants after UV irradiation and MMS treatment of phage sensitive B. coagulans parental culture were characterized at functional and molecular level and were noted to have undergone interesting genetic changes. The non-specific genetic alterations induced by mutagenesis can also lead to alterations in cell performance. Hence, in the current study the parental strain and the two mutants were selected for shake flask optimization. Plackett–Burman design was used to select the significant culture variables affecting biomass production. Evolutionary operation method was applied for further optimization. The study showed wide variations in the nutritional requirements of phage resistant mutants, post exposure to mutagens. An increment of 150, 134 and 152 % was observed in the biomass productions of B. coagulans (parental type) and mutants B.co PIII and B.co MIII respectively, compared to the yield from one-factor-at-a-time technique. Using Logistic and modified Leudeking–Piret equations, biomass accumulation and substrate utilization efficiency of the bioprocess were determined. The experimental data was in agreement with the results predicted by statistical analysis and modelling. The developed model may be useful for controlling the growth and substrate consumption kinetics in large scale fermentation using B. coagulans.
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Affiliation(s)
| | - Chetan Joshi
- Department of Food Engineering and Technology, Institute of Chemical Technology, Matunga, Mumbai, 400019 India
| | - Babu V Vakil
- GNIRD, G. N. Khalsa College, Matunga, Mumbai, 400019 India
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Coghetto CC, Brinques GB, Ayub MAZ. Probiotics production and alternative encapsulation methodologies to improve their viabilities under adverse environmental conditions. Int J Food Sci Nutr 2016; 67:929-43. [PMID: 27456038 DOI: 10.1080/09637486.2016.1211995] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Probiotic products are dietary supplements containing live microorganisms producing beneficial health effects on the host by improving intestinal balance and nutrient absorption. Among probiotic microorganisms, those classified as lactic acid bacteria are of major importance to the food and feed industries. Probiotic cells can be produced using alternative carbon and nitrogen sources, such as agroindustrial residues, at the same time contributing to reduce process costs. On the other hand, the survival of probiotic cells in formulated food products, as well as in the host gut, is an essential nutritional aspect concerning health benefits. Therefore, several cell microencapsulation techniques have been investigated as a way to improve cell viability and survival under adverse environmental conditions, such as the gastrointestinal milieu of hosts. In this review, different aspects of probiotic cells and technologies of their related products are discussed, including formulation of culture media, and aspects of cell microencapsulation techniques required to improve their survival in the host.
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Affiliation(s)
- Chaline Caren Coghetto
- a Biotechnology and Biochemical Engineering Laboratory (BiotecLab) , Federal University of Rio Grande Do Sul , Porto Alegre , Brazil
| | - Graziela Brusch Brinques
- b Nutrition Department , Federal University of Health Sciences of Porto Alegre , Porto Alegre , Brazil
| | - Marco Antônio Záchia Ayub
- a Biotechnology and Biochemical Engineering Laboratory (BiotecLab) , Federal University of Rio Grande Do Sul , Porto Alegre , Brazil
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High D(−) lactic acid levels production by Sporolactobacillus nakayamae and an efficient purification. ANN MICROBIOL 2016. [DOI: 10.1007/s13213-016-1224-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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35
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Wei X, Song X, Dong D, Keyhani NO, Yao L, Zang X, Dong L, Gu Z, Fu D, Liu X, Qiu J, Guan X. Efficient production of Aschersonia placenta protoplasts for transformation using optimization algorithms. Can J Microbiol 2016; 62:579-87. [PMID: 27192440 DOI: 10.1139/cjm-2015-0770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The insect pathogenic fungus Aschersonia placenta is a highly effective pathogen of whiteflies and scale insects. However, few genetic tools are currently available for studying this organism. Here we report on the conditions for the production of transformable A. placenta protoplasts using an optimized protocol based on the response surface method (RSM). Critical parameters for protoplast production were modelled by using a Box-Behnken design (BBD) involving 3 levels of 3 variables that was subsequently tested to verify its ability to predict protoplast production (R(2) = 0.9465). The optimized conditions resulted in the highest yield of protoplasts ((4.41 ± 0.02) × 10(7) cells/mL of culture, mean ± SE) when fungal cells were treated with 26.1 mg/mL of lywallzyme for 4 h of digestion, and subsequently allowed to recover for 64.6 h in 0.7 mol/L NaCl-Tris buffer. The latter was used as an osmotic stabilizer. The yield of protoplasts was approximately 10-fold higher than that of the nonoptimized conditions. Generated protoplasts were transformed with vector PbarGPE containing the bar gene as the selection marker. Transformation efficiency was 300 colonies/(μg DNA·10(7) protoplasts), and integration of the vector DNA was confirmed by PCR. The results show that rational design strategies (RSM and BBD methods) are useful to increase the production of fungal protoplasts for a variety of downstream applications.
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Affiliation(s)
- Xiuyan Wei
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China.,c State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xinyue Song
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China.,c State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Dong Dong
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China.,c State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Nemat O Keyhani
- d Department of Microbiology and Cell Science, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611, USA
| | - Lindan Yao
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China
| | - Xiangyun Zang
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China
| | - Lili Dong
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China
| | - Zijian Gu
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China
| | - Delai Fu
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China
| | - Xingzhong Liu
- c State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Junzhi Qiu
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China.,c State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiong Guan
- a Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.,b Fujian-Taiwan Joint Centre for Ecological Control of Crop Pests, Fuzhou, Fujian 350002, China
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Byproduct from pumpkin ( Cucurbita moschata Duchesne ex poiret) as a substrate and vegetable matrix to contain Lactobacillus casei. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.02.030] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Reddy Tadi SR, E. V. R. A, Limaye AM, Sivaprakasam S. Enhanced production of optically pure d
(-) lactic acid from nutritionally rich Borassus flabellifer
sugar and whey protein hydrolysate based-fermentation medium. Biotechnol Appl Biochem 2016; 64:279-289. [DOI: 10.1002/bab.1470] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 12/11/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Subbi Rami Reddy Tadi
- BioPAT Laboratory; Department of Biosciences and Bioengineering; Indian Institute of Technology Guwahati; Guwahati India
| | - Arun E. V. R.
- BioPAT Laboratory; Department of Biosciences and Bioengineering; Indian Institute of Technology Guwahati; Guwahati India
| | - Anil Mukund Limaye
- BioPAT Laboratory; Department of Biosciences and Bioengineering; Indian Institute of Technology Guwahati; Guwahati India
| | - Senthilkumar Sivaprakasam
- BioPAT Laboratory; Department of Biosciences and Bioengineering; Indian Institute of Technology Guwahati; Guwahati India
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Rajput KN, Patel KC, Trivedi UB. Screening and Selection of Medium Components for Cyclodextrin Glucanotransferase Production by New Alkaliphile Microbacterium terrae KNR 9 Using Plackett-Burman Design. BIOTECHNOLOGY RESEARCH INTERNATIONAL 2016; 2016:3584807. [PMID: 26955489 PMCID: PMC4756137 DOI: 10.1155/2016/3584807] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 01/10/2016] [Indexed: 11/18/2022]
Abstract
Cyclodextrin glucanotransferase (CGTase, EC 2.4.1.19) production using new alkaliphile Microbacterium terrae KNR 9 was investigated by submerged fermentation. Statistical screening for components belonging to different categories, namely, soluble and raw starches as carbon sources, complex organic and inorganic nitrogen sources, minerals, a buffering agent, and a surfactant, has been carried out for CGTase production using Plackett-Burman factorial design. To screen out k (19), number of variables, k + 1 (20), number of experiments, were performed. Among the fourteen components screened, four components, namely, soluble starch, corn flour, yeast extract, and K2HPO4, were identified as significant with reference to their concentration effect and corresponding p value. Although soluble starch showed highest significance, comparable significance was also observed with corn flour and hence it was selected as a sole carbon source along with yeast extract and K2HPO4 for further media optimization studies. Using screened components, CGTase production was increased to 45% and 87% at shake flask level and laboratory scale fermenter, respectively, as compared to basal media.
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Affiliation(s)
- Kiransinh N. Rajput
- Department of Microbiology and Biotechnology, School of Sciences, Gujarat University, Navrangpura, Ahmedabad, Gujarat 380 009, India
| | - Kamlesh C. Patel
- Department of Microbiology, BRD School of Biosciences, Sardar Patel Maidan, Sardar Patel University, Satellite Campus, Bakrol, Vallabh Vidyanagar, Gujarat 388 120, India
| | - Ujjval B. Trivedi
- Department of Microbiology, BRD School of Biosciences, Sardar Patel Maidan, Sardar Patel University, Satellite Campus, Bakrol, Vallabh Vidyanagar, Gujarat 388 120, India
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Ai J, Li AL, Su BX, Meng XC. Multi-Cereal Beverage Fermented by Lactobacillus Helveticus and Saccharomyces Cerevisiae. J Food Sci 2015; 80:M1259-65. [PMID: 25962443 DOI: 10.1111/1750-3841.12859] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 03/02/2015] [Indexed: 11/27/2022]
Abstract
A novel multi-cereal-based fermented beverage with suitable aroma, flavor, and pH fermented by lactic acid bacteria and Saccharomyces cerevisiae was developed. Twenty-seven lactobacilli strains were screened for acid production (pH and titratable acidity) in a mixture of malt, rice, and maize substrates. It was found that Lactobacillus helveticus KLDS1.9204 had the greatest acid production among 27 lactobacilli tested. The fermentation performance of L. helveticus KLDS1.9204 was also assayed and the fermentation parameters were optimized using Plackett-Burman design and steepest ascent method. L. helveticus KLDS1.9204 showed good proteolytic capability, however, the strain could not utilize starch. The optimum substrate consisted of 50% malt (25 g/100 mL), 25% rice (20 g/100 mL), and 25% maize (30 g/100 mL). The inoculum was 5% with a ratio of S. cerevisiae to L. helveticus KLDS1.9204 of 2.5:1. The optimum temperature was 37 °C and the time was 22 h. Lastly, the quality of the multi-cereal-based fermented beverage was evaluated. This beverage was light yellow, transparent, and it tasted well with a pleasant acid and a unique flavor of cereals. The beverage was rich in free amino acids and organic acids. The pH and titratable acidity of the beverage were 3.5 and 29.86 °T, respectively. The soluble solids content of the beverage was 6.5 °Brix, and the alcohol content was 0.67%.
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Affiliation(s)
- Jing Ai
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural Univ, Harbin, 150030, China.,Synergetic Innovation Center of Food Safety and Nutrition, Northeast Agricultural Univ, Harbin, 150030, China
| | - Ai-Li Li
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural Univ, Harbin, 150030, China.,Synergetic Innovation Center of Food Safety and Nutrition, Northeast Agricultural Univ, Harbin, 150030, China
| | - Ben-Xian Su
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural Univ, Harbin, 150030, China.,Synergetic Innovation Center of Food Safety and Nutrition, Northeast Agricultural Univ, Harbin, 150030, China
| | - Xiang-Chen Meng
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural Univ, Harbin, 150030, China.,Synergetic Innovation Center of Food Safety and Nutrition, Northeast Agricultural Univ, Harbin, 150030, China
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40
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Effect of pretreatment on arabinoxylan distribution in wheat bran. Carbohydr Polym 2015; 121:18-26. [DOI: 10.1016/j.carbpol.2014.12.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 11/05/2014] [Accepted: 12/10/2014] [Indexed: 11/18/2022]
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41
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Pyar H, Peh KK. Cost effectiveness of cryoprotective agents and modified De-man Rogosa Sharpe medium on growth of Lactobacillus acidophilus. Pak J Biol Sci 2015; 17:462-71. [PMID: 25911832 DOI: 10.3923/pjbs.2014.462.471] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The effect of cryoprotective agents (namely, sodium chloride, sucrose, dextran, sorbitol, monosodium glutamate, glycerol, skim milk and skim milk with malt extract) and modified De-Man Rogosa Sharpe (MRS) medium, on the viability and stability of L. acidophilus ATCC 4962, was investigated. The modified MRS medium was not only economical, but it gave a relatively higher yield of L. acidophilus ATCC 4962 than the commercial MRS. Monosodium glutamate, skim milk and skim milk with malt extract provided significantly higher viable counts, with optimum concentration at 0.3%. Nevertheless, at concentration above 0.5%, there was a reduction in cell viability, which could be attributed to cell shrinkage associated with osmotic pressure changes inside the cells. It was also found that L. acidophilus ATCC 4962 was stable at 28 degrees C for eight weeks. Skim milk demonstrated a significant growth of probiotics. Skim milk was the preferred cryoprotective agent, as it is of low cost, easily available and demonstrated a significant growth of probiotics. In conclusion, modified MRS medium with skim milk is suggested for the remarkable growth and yield of L. acidophilus.
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42
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Chen HM, Fu X, Abbasi AM, Luo ZG. Preparation of environment-friendly pectin from sugar beet pulp and assessment of its emulsifying capacity. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12779] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai-Ming Chen
- College of Food Sciences; South China University of Technology; 381 Wushan Road Guangzhou 510640 China
| | - Xiong Fu
- College of Food Sciences; South China University of Technology; 381 Wushan Road Guangzhou 510640 China
| | - Arshad M. Abbasi
- College of Food Sciences; South China University of Technology; 381 Wushan Road Guangzhou 510640 China
- Department of Environmental Sciences; COMSATS Institute of Information Technology; Abbottabad 22060 Pakistan
| | - Zhi-Gang Luo
- College of Food Sciences; South China University of Technology; 381 Wushan Road Guangzhou 510640 China
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43
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Thakkar A, Saraf M. Application of Statistically Based Experimental Designs to Optimize Cellulase Production and Identification of Gene. NATURAL PRODUCTS AND BIOPROSPECTING 2014; 4:341-51. [PMID: 25416137 PMCID: PMC4311583 DOI: 10.1007/s13659-014-0046-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 11/11/2014] [Indexed: 06/04/2023]
Abstract
A natural bacterial strain identified as Bacillus amyloliquefaciens MBAA3 using 16S rDNA partial genome sequencing has been studied for optimization of cellulase production. Statistical screening of media components for production of cellulase by B. amyloliquefaciens MBAA3 was carried out by Plackett-Burman design. Plackett-Burman design showed CMC, MgSO4 and pH as significant components influencing the cellulase production from the media components screened by Plackett-Burman fractional factorial design. The optimum concentrations of these significant parameters were determined employing the response surface central composite design, involving three factors and five levels was adopted to acquire the best medium for the production of cellulase enzyme revealed concentration of CMC (1.84 g), MgSO4 (0.275 g), and pH (8.5) in media for highest enzyme production. Response surface counter plots revealed that middle level of MgSO4 and middle level of CMC, higher level of CMC and lower level of pH and higher level of MgSO4 with lower level of pH increase the production of cellulase. After optimization cellulase activity increased by 6.81 fold. Presence of cellulase gene in MBAA3 was conformed by the amplification of genomic DNA of MBAA3. A PCR product of cellulase gene of 1500 bp was successfully amplified. The amplified gene was conformed by sequencing the amplified product and sequence was deposited in the gene bank under the accession number KF929416. Response surface graph showing interaction effects between concentration of a CMC and MgSO4. b pH and CMC. c MgSO4 and pH.
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Affiliation(s)
- Aarti Thakkar
- Department of Microbiology, University School of Science, Gujarat University, Ahmedabad, 380 009, Gujarat, India
| | - Meenu Saraf
- Department of Microbiology, University School of Science, Gujarat University, Ahmedabad, 380 009, Gujarat, India.
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Lochmatter S, Holliger C. Optimization of operation conditions for the startup of aerobic granular sludge reactors biologically removing carbon, nitrogen, and phosphorous. WATER RESEARCH 2014; 59:58-70. [PMID: 24784454 DOI: 10.1016/j.watres.2014.04.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 03/20/2014] [Accepted: 04/04/2014] [Indexed: 06/03/2023]
Abstract
The transformation of conventional flocculent sludge to aerobic granular sludge (AGS) biologically removing carbon, nitrogen and phosphorus (COD, N, P) is still a main challenge in startup of AGS sequencing batch reactors (AGS-SBRs). On the one hand a rapid granulation is desired, on the other hand good biological nutrient removal capacities have to be maintained. So far, several operation parameters have been studied separately, which makes it difficult to compare their impacts. We investigated seven operation parameters in parallel by applying a Plackett-Burman experimental design approach with the aim to propose an optimized startup strategy. Five out of the seven tested parameters had a significant impact on the startup duration. The conditions identified to allow a rapid startup of AGS-SBRs with good nutrient removal performances were (i) alternation of high and low dissolved oxygen phases during aeration, (ii) a settling strategy avoiding too high biomass washout during the first weeks of reactor operation, (iii) adaptation of the contaminant load in the early stage of the startup in order to ensure that all soluble COD was consumed before the beginning of the aeration phase, (iv) a temperature of 20 °C, and (v) a neutral pH. Under such conditions, it took less than 30 days to produce granular sludge with high removal performances for COD, N, and P. A control run using this optimized startup strategy produced again AGS with good nutrient removal performances within four weeks and the system was stable during the additional operation period of more than 50 days.
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Affiliation(s)
- Samuel Lochmatter
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering, Laboratory for Environmental Biotechnology, Lausanne, Switzerland
| | - Christof Holliger
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering, Laboratory for Environmental Biotechnology, Lausanne, Switzerland.
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Mazzoli R, Bosco F, Mizrahi I, Bayer EA, Pessione E. Towards lactic acid bacteria-based biorefineries. Biotechnol Adv 2014; 32:1216-1236. [PMID: 25087936 DOI: 10.1016/j.biotechadv.2014.07.005] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 07/14/2014] [Accepted: 07/16/2014] [Indexed: 10/25/2022]
Abstract
Lactic acid bacteria (LAB) have long been used in industrial applications mainly as starters for food fermentation or as biocontrol agents or as probiotics. However, LAB possess several characteristics that render them among the most promising candidates for use in future biorefineries in converting plant-derived biomass-either from dedicated crops or from municipal/industrial solid wastes-into biofuels and high value-added products. Lactic acid, their main fermentation product, is an attractive building block extensively used by the chemical industry, owing to the potential for production of polylactides as biodegradable and biocompatible plastic alternative to polymers derived from petrochemicals. LA is but one of many high-value compounds which can be produced by LAB fermentation, which also include biofuels such as ethanol and butanol, biodegradable plastic polymers, exopolysaccharides, antimicrobial agents, health-promoting substances and nutraceuticals. Furthermore, several LAB strains have ascertained probiotic properties, and their biomass can be considered a high-value product. The present contribution aims to provide an extensive overview of the main industrial applications of LAB and future perspectives concerning their utilization in biorefineries. Strategies will be described in detail for developing LAB strains with broader substrate metabolic capacity for fermentation of cheaper biomass.
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Affiliation(s)
- Roberto Mazzoli
- Laboratory of Biochemistry: Proteomics and Metabolic Engineering of Prokaryotes, Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123 Torino, Italy.
| | - Francesca Bosco
- Department of Applied Science and Technology (DISAT), Politecnico of Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy.
| | - Itzhak Mizrahi
- Institute of Animal Science, ARO, Volcani Research Center, P.O. Box 6Â, Bet Dagan 50-250, Israel.
| | - Edward A Bayer
- Department of Biological Chemistry, the Weizmann Institute of Science, Rehovot 76100 Israel.
| | - Enrica Pessione
- Laboratory of Biochemistry: Proteomics and Metabolic Engineering of Prokaryotes, Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123 Torino, Italy.
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Optimization of inulinase production from low cost substrates using Plackett–Burman and Taguchi methods. Carbohydr Polym 2014; 102:261-8. [DOI: 10.1016/j.carbpol.2013.11.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 10/19/2013] [Accepted: 11/02/2013] [Indexed: 11/22/2022]
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47
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Rapid decolorization of azo dyes by crude manganese peroxidase from Schizophyllum sp. F17 in solid-state fermentation. BIOTECHNOL BIOPROC E 2013. [DOI: 10.1007/s12257-013-0357-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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48
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Roy JK, Mukherjee AK. Applications of a high maltose forming, thermo-stable α-amylase from an extremely alkalophilic Bacillus licheniformis strain AS08E in food and laundry detergent industries. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.06.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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49
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yingling B, zhengfang Y. Application of an integrated statistical design for optimization of culture condition for ammonium removal by Nitrosomonas europaea. PLoS One 2013; 8:e60322. [PMID: 23565225 PMCID: PMC3614901 DOI: 10.1371/journal.pone.0060322] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 02/25/2013] [Indexed: 11/19/2022] Open
Abstract
Statistical methodology was applied to the optimization of the ammonium oxidation by Nitrosomonas europaea for biomass concentration (CB), nitrite yield (YN) and ammonium removal (RA). Initial screening by Plackett-Burman design was performed to select major variables out of nineteen factors, among which NH4Cl concentration (CN), trace element solution (TES), agitation speed (AS), and fermentation time (T) were found to have significant effects. Path of steepest ascent and response surface methodology was applied to optimize the levels of the selected factors. Finally, multi-objective optimization was used to obtain optimal condition by compromise of the three desirable objectives through a combination of weighted coefficient method coupled with entropy measurement methodology. These models enabled us to identify the optimum operation conditions (CN = 84.1 mM; TES = 0.74 ml; AS = 100 rpm and T = 78 h), under which CB = 3.386×108 cells/ml; YN = 1.98 mg/mg and RA = 97.76% were simultaneously obtained. The optimized conditions were shown to be feasible through verification tests.
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Affiliation(s)
- Bao yingling
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, China
| | - Ye zhengfang
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, China
- * E-mail:
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Bishai M, De S, Adhikari B, Banerjee R. Zizyphus oenophlia: a potent substrate for lactic acid production. BIORESOURCE TECHNOLOGY 2013; 133:627-629. [PMID: 23465537 DOI: 10.1016/j.biortech.2012.12.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2012] [Revised: 12/06/2012] [Accepted: 12/08/2012] [Indexed: 06/01/2023]
Abstract
The objective of the present investigation deals with optimization of L-lactic acid production from Zizyphus oenophlia, a potential low cost substrate. Central composite design (CCD) based on response surface methodology (RSM) was employed as a statistical tool to investigate the effect of substrate: media ratio, temperature, pH and inoculum volume on lactic acid production. Under optimum condition, the experimental yield was 95.09%, which matched well with the predictive yield of 95.45%. HPLC and circular dichroism (CD) analysis of the fermented product was carried out to confirm the presence of lactic acid in its L (+) seriospecificity respectively. For application of lactic acid in biotechnological sector polymerization studies were carried out. The PLA upon recovery through direct polycondensation reaction resulted in the yield of 85%.
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Affiliation(s)
- Moumita Bishai
- Microbial Biotechnology and Downstream Processing Laboratory, Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur, India
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