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Di Salvo E, Vadalà R, De Maria L, Genovese C, Cicero N. Supplementation of date palm (Phoenix dactylifera L.) residue for growth and lactic acid production of probiotic bacterial Lactobacillus spp. Nat Prod Res 2024:1-7. [PMID: 38946336 DOI: 10.1080/14786419.2024.2365440] [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: 03/14/2024] [Accepted: 06/03/2024] [Indexed: 07/02/2024]
Abstract
Date palm is an age-old cultivated plant that thrives in tropical and subtropical regions. The date palm is a bountiful source of carbohydrates, encompassing sucrose, glucose, and fructose and proteins. The date industry generates a significant volume of unused by-products. Dates offer a diverse range of by-products beyond the agri-food sector. LAB have garnered extensive utilisation across diverse food sectors, spanning meat, vegetables, beverages, dairy products, and other fermented foods. In the quest for establishing a new large-scale fermentation process for lactic acid there has been a concerted effort to utilise more cost-effective medium components. In the present work, date palm residue (DPR) derived from date palm fruit, after sugar extraction, was incorporated into MRS. The fermentation process was executed through two distinct fermentation systems. Initially, experiments were conducted in flasks. Afterward, the optimal conditions for bacterial growth were determined, and the experiment was carried out using a bioreactor. DPR supported the probiotic Lactobacillus spp. growth especially after 48 h incubation. The prebiotic effect of DPR on Lactobacillus spp. was reported. An increase in the total number of bacterial populations was observed in response to the addition the DPR until 48 h. Specifically, the supplementing DPR at a concentration of 1.5% in batch fermentation enhanced the growth and lactic acid production of Lactobacillus casei. This study suggests that DPR could potentially function as an economical prebiotic source and could be seamlessly incorporated as a functional food ingredient, thereby transforming a waste product into an economically sustainable food substrate.
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Affiliation(s)
- Eleonora Di Salvo
- Department of Biomedical and Dental Science and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Rossella Vadalà
- Department of Biomedical and Dental Science and Morphofunctional Imaging, University of Messina, Messina, Italy
| | - Laura De Maria
- Department of Veterinary Sciences, University of Messina, Messina, Italy
| | - Claudia Genovese
- National Research Council, Institute for Agriculture and Forestry Systems in the Mediterranean, Catania, Italy
| | - Nicola Cicero
- Department of Biomedical and Dental Science and Morphofunctional Imaging, University of Messina, Messina, Italy
- National Research Council, Institute for Agriculture and Forestry Systems in the Mediterranean, Catania, Italy
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Ricci A, Díaz AB, Lazzi C, Blandino Garrido AM. Valorization of orange peels exploiting fungal solid-state and lacto-fermentation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:4614-4624. [PMID: 36860131 DOI: 10.1002/jsfa.12537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 02/21/2023] [Accepted: 03/01/2023] [Indexed: 06/06/2023]
Abstract
BACKGROUND Orange peels can serve as a cost-effective raw material for the production of lactic acid. Indeed, given their high concentration of carbohydrates and low content of lignin, they represent an important source of fermentable sugars, recoverable after a hydrolytic step. RESULTS In the present article, the fermented solid, obtained after 5 days of Aspergillus awamori growth, was used as the only source of enzymes, mainly composed of xylanase (40.6 IU g-1 of dried washed orange peels) and exo-polygalacturonase (16.3 IU g-1 of dried washed orange peels) activities. After the hydrolysis, the highest concentration of reducing sugars (24.4 g L-1 ) was achieved with 20% fermented and 80% non-fermented orange peels. The hydrolysate was fermented with three lactic acid bacteria strains (Lacticaseibacillus casei 2246 and 2240 and Lacticaseibacillus rhamnosus 1019) which demonstrated good growth ability. The yeast extract supplementation increased the lactic acid production rate and yield. Overall, L. casei 2246 produced the highest concentration of lactic acid in mono-culture. CONCLUSION To the best of our knowledge this is the first study exploiting orange peels as low-cost raw material for the production of lactic acid avoiding the employment of commercial enzymes. The enzymes necessary for the hydrolyses were directly produced during A. awamori fermentation and the reducing sugars obtained were fermented for lactic acid production. Despite this preliminary work carried out to study the feasibility of this approach, the concentrations of reducing sugars and lactic acid produced were encouraging, leaving open the possibility of other studies for the optimization of the strategy proposed here. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Annalisa Ricci
- Department of Food and Drug, University of Parma, Parma, Italy
| | - Ana Belen Díaz
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, International Agro-Food Campus of Excellence (CeiA3), University of Cadiz, Puerto Real, Spain
| | - Camilla Lazzi
- Department of Food and Drug, University of Parma, Parma, Italy
- Interdepartmental Center, SITEIA.PARMA-Centro Interdipartimentale sulla Sicurezza, Tecnologie e Innovazione Agroalimentare, University of Parma, Parma, Italy
| | - Ana María Blandino Garrido
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, International Agro-Food Campus of Excellence (CeiA3), University of Cadiz, Puerto Real, Spain
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Song L, Yang D, Liu R, Liu S, Dai X. The dissolution of polysaccharides and amino acids enhanced lactic acid production from household food waste during pretreatment process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 864:161068. [PMID: 36565887 DOI: 10.1016/j.scitotenv.2022.161068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 12/16/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
A large amount of household food waste (HFW) is produced yearly, resulting in environmental problems and financial burdens. Bio-production of lactic acid (LA), a high value-added platform chemical, from HFW by anaerobic fermentation is a promising way of resource recovery. However, the LA production yield from HFW is low. This paper compared several pretreatment methods (hydrothermal pretreatment, chemical pretreatment, and combined hydrothermal and chemical pretreatment) to improve LA production from HFW. The result showed that the combined pretreatment (alkali-thermal pretreatment at pH 10 and 120 °C) significantly increased the LA production than single hydrothermal and chemical pretreatment. The pretreatment process promoted the dissolution of organics, especially the polysaccharides and amino acids, and further influenced the LA production by Lactobacillus rhamnosus ATCC 7469. Among the amino acids, aspartic acid (Asp), threonine (Thr), glutamic acid (Glu), glycine (Gly), alanine (Ala), cystine (Cys), valine (Val), isoleucine (Ile), arginine (Arg), and proline (Pro) significantly correlated with LA concentration.
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Affiliation(s)
- Liang Song
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Donghai Yang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Rui Liu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Shiyu Liu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xiaohu Dai
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
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Ma K, Cui Y, Zhao K, Yang Y, Wang Y, Hu G, He M. D-Lactic acid production from agricultural residues by membrane integrated continuous fermentation coupled with B vitamin supplementation. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2022; 15:24. [PMID: 35246204 PMCID: PMC8897852 DOI: 10.1186/s13068-022-02124-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 02/22/2022] [Indexed: 11/10/2022]
Abstract
Background d-Lactic acid played an important role in the establishment of PLA as a substitute for petrochemical plastics. But, so far, the d-lactic acid production was limited in only pilot scale, which was definitely unable to meet the fast growing market demand. To achieve industrial scale d-lactic acid production, the cost-associated problems such as high-cost feedstock, expensive nutrient sources and fermentation technology need to be resolved to establish an economical fermentation process. Results In the present study, the combined effect of B vitamin supplementation and membrane integrated continuous fermentation on d-lactic acid production from agricultural lignocellulosic biomass by Lactobacillus delbrueckii was investigated. The results indicated the specific addition of vitamins B1, B2, B3 and B5 (VB1, VB2, VB3 and VB5) could reduce the yeast extract (YE) addition from 10 to 3 g/l without obvious influence on fermentation efficiency. By employing cell recycling system in 350 h continuous fermentation with B vitamin supplementation, YE addition was further reduced to 0.5 g/l, which resulted in nutrient source cost reduction of 86%. A maximum d-lactate productivity of 18.56 g/l/h and optical purity of 99.5% were achieved and higher than most recent reports. Conclusion These findings suggested the novel fermentation strategy proposed could effectively reduce the production cost and improve fermentation efficiency, thus exhibiting great potential in promoting industrial scale d-lactic acid production from lignocellulosic biomass. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13068-022-02124-y. High d-lactic acid productivity is achieved by L. delbrueckii from rice straw. B vitamins are satisfied substitute of yeast extract for d-lactic acid fermentation. A process of membrane-integrated continuous fermentation with B vitamin is developed. High fermentation efficiency is achieved by the novel fermentation process.
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Affiliation(s)
- Kedong Ma
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Minzu University, Dalian, 116600, People's Republic of China.,College of Environment and Resources, Dalian Minzu University, Dalian, 116600, People's Republic of China.,Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biomass Energy Technology Research Centre, Biogas Institute of Ministry of Agriculture, Chengdu, 610041, People's Republic of China
| | - Yubo Cui
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Minzu University, Dalian, 116600, People's Republic of China. .,College of Environment and Resources, Dalian Minzu University, Dalian, 116600, People's Republic of China.
| | - Ke Zhao
- Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun, 130118, People's Republic of China
| | - Yuxuan Yang
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Minzu University, Dalian, 116600, People's Republic of China.,College of Environment and Resources, Dalian Minzu University, Dalian, 116600, People's Republic of China
| | - Yidan Wang
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Minzu University, Dalian, 116600, People's Republic of China.,College of Environment and Resources, Dalian Minzu University, Dalian, 116600, People's Republic of China
| | - Guoquan Hu
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biomass Energy Technology Research Centre, Biogas Institute of Ministry of Agriculture, Chengdu, 610041, People's Republic of China
| | - Mingxiong He
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biomass Energy Technology Research Centre, Biogas Institute of Ministry of Agriculture, Chengdu, 610041, People's Republic of China.
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Song L, Yang D, Liu R, Liu S, Dai L, Dai X. Microbial production of lactic acid from food waste: Latest advances, limits, and perspectives. BIORESOURCE TECHNOLOGY 2022; 345:126052. [PMID: 34592459 DOI: 10.1016/j.biortech.2021.126052] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/24/2021] [Accepted: 09/25/2021] [Indexed: 06/13/2023]
Abstract
A significant amount of food waste (FW) is produced every year. If it is not disposed of timeously, human health and the ecological environment can be negatively affected. Lactic acid (LA), a high value-added product, can be produced by fermentation from FW as a substrate, realizing the concurrent treatment and recycling of FW, which has attracted increasing research interest. In this paper, the latest advances and deficiencies were presented from the following aspects: microorganisms involved in LA fermentation and the metabolic pathways of Lactobacillus, fermentation conditions, and methods of enhanced biotransformation and LA separation. The limitations of the LA fermentation of FW are mainly associated with low LA concentration and yield, the low purity of L(+)-LA, and the high separation costs. The establishment of biorefineries of FW with lactic acid as the target product is the future development direction, but there are still many research studies to be done.
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Affiliation(s)
- Liang Song
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Donghai Yang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Rui Liu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Shiyu Liu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Lingling Dai
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xiaohu Dai
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
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Recent Advances in Lactic Acid Production by Lactic Acid Bacteria. Appl Biochem Biotechnol 2021; 193:4151-4171. [PMID: 34519919 DOI: 10.1007/s12010-021-03672-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 09/03/2021] [Indexed: 02/07/2023]
Abstract
Lactic acid can synthesize high value-added chemicals such as poly lactic acid. In order to further minimize the cost of lactic acid production, some effective strategies (e.g., effective mutagenesis and metabolic engineering) have been applied to increase productive capacity of lactic acid bacteria. In addition, low-cost cheap raw materials (e.g., cheap carbon source and cheap nitrogen source) are also used to reduce the cost of lactic acid production. In this review, we summarized the recent developments in lactic acid production, including efficient strain modification technology (high-efficiency mutagenesis means, adaptive laboratory evolution, and metabolic engineering), the use of low-cost cheap raw materials, and also discussed the future prospects of this field, which could promote the development of lactic acid industry.
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Influence of Nitrogen Sources on D-Lactic Acid Biosynthesis by Sporolactobacillus laevolacticus DSM 442 Strain. FERMENTATION 2021. [DOI: 10.3390/fermentation7020078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The purpose of this study was to explore the possibility of replacing an expensive yeast extract contained in the fermentation medium for D-lactic acid (D-LA, R-lactic acid) biosynthesis with an alternative nitrogen source. The screening studies were conducted under stationary conditions and showed that pea seed hydrolysate was the most beneficial substrate in the process of D-LA biosynthesis by the strain Sporolactobacillus laevolacticus DSM 442 among the used inorganic and organic nitrogen sources, waste materials, food and agricultural products. After 96 h, 75.5 g/L D-LA was obtained in batch cultures in a medium containing pea seed hydrolysate, with an average productivity of 0.79 g/L/h, yield of 75.5%, and optical purity of 99.4%. In batch cultures fed once, in a medium with an analogous composition, 122.6 g/L D-LA was obtained after 120 h, and the average yield, productivity and optical purity were 87.6%, 1.021 g/L/h, and 99.6%, respectively. Moreover, the amount of D-LA obtained in the fermentation medium enriched with the above-mentioned cheap agricultural product was similar to the amounts obtained in the medium containing yeast extract in both stationary and bioreactor cultures. Our research shows that hydrolyzed pea seeds, which belong to the legume family, may be a promising nitrogen source for the production of D-LA on an industrial scale.
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Moon SH, Chang HC. Rice Bran Fermentation Using Lactiplantibacillus plantarum EM as a Starter and the Potential of the Fermented Rice Bran as a Functional Food. Foods 2021; 10:978. [PMID: 33946993 PMCID: PMC8144953 DOI: 10.3390/foods10050978] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 11/16/2022] Open
Abstract
Rice bran was fermented using a functional starter culture of Lactiplantibacillus plantarum EM, which exhibited high cholesterol removal and strong antimicrobial activity. Highest viable cell counts (9.78 log CFU/mL) and strong antimicrobial activity were obtained by fermenting 20% rice bran supplemented with 1% glucose and 3% corn steep liquor (pH 6.0) at 30 °C for 48 h. The fermented rice bran slurry was hot air-dried (55 °C, 16 h) and ground (HFRB). HFRB obtained showed effective cholesterol removal (45-68%) and antimicrobial activities (100-400 AU/mL) against foodborne pathogenic bacteria and food spoilage fungi. Phytate levels were significantly reduced during fermentation by 53% due to the phytase activity of L. plantarum EM, indicating HFRB does not present nutrient deficiency issues. In addition, fermentation significantly improved overall organoleptic quality. Our results indicate that HFRB is a promising functional food candidate. Furthermore, HFRB appears to satisfy consumer demands for a health-promoting food and environmental and legal requirements concerning the re-utilization of biological byproducts.
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Affiliation(s)
| | - Hae-Choon Chang
- Kimchi Research Center, Department of Food and Nutrition, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Korea;
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Sales AL, dePaula J, Mellinger Silva C, Cruz A, Lemos Miguel MA, Farah A. Effects of regular and decaffeinated roasted coffee (Coffea arabica and Coffea canephora) extracts and bioactive compounds on in vitro probiotic bacterial growth. Food Funct 2020; 11:1410-1424. [PMID: 31970371 DOI: 10.1039/c9fo02589h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The aim of this study was to investigate the effects of coffee species, roast degree and decaffeination on in vitro probiotic bacterial growth, and to identify the major coffee compounds responsible for such effects. Six C. arabica and C. canephora extracts (regular medium and dark roasted and decaffeinated medium roasted), and five bioactive compounds (chlorogenic acid, galactomannan, type 2 arabinogalactan, caffeine and trigonelline) were individually incorporated into a modified low-carbon broth medium-(mMRS), at different concentrations (0.5 to 1.5% soluble coffee and 0.05 to 0.8 mg mL-1 standard solutions). Inulin and fructooligosaccharides (FOS) were used as prebiotic references. MRS and mMRS were used as rich and poor medium controls, respectively. The growth of Lactobacillus rhamnosus GG ATCC 53103-(GG), L. acidophilus LA-5-(LA), Bifidobacterium animalis DN-173010-(BA) and B. animalis subsp. lactis BB12-(BB12), as well as the growth inhibition of non-probiotic Escherichia coli ATCC 25922 were evaluated. Differences in growth between mMRS and treatments (Δlog CFU mL-1) were compared by ANOVA and Tukey's test, and considered when p ≤ 0.05. Overall, after 48 h incubation, the medium roasted arabica coffee extract increased the growth of GG, LA and BA (range: Δlog CFU mL-1 = 0.5 to 1.8), while the dark roasted arabica coffee extract increased BB12 growth (range: Δlog CFU mL-1 = 0.9 to 1.7), in a dose dependent manner. Improved performances of GG, LA and BA were promoted by higher polysaccharides and CGA concentrations, with better performance for Lactobacillus sp. The tested coffee bioactive compounds promoted the poor growth of BB12. Plain caffeine did not promote Bifidobacterium sp. growth and limited the growth of Lactobacillus sp. Regular C. arabica and C. canephora extracts inhibited the growth of E. coli, while the decaffeinated extracts promoted its growth. The present results show that coffee consumption can selectively improve the growth of probiotic strains, thus exerting a prebiotic effect, and show that coffee roasting and decaffeination affect this property and that different strains utilize different coffee components to grow.
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Affiliation(s)
- Amanda Luísa Sales
- Food Chemistry and Bioactivity Laboratory & Coffee Research Core (NUPECAFÉ), Nutrition Institute, Federal University of Rio de Janeiro (UFRJ), Brazil.
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Abstract
Lactic acid is a building block for polylactic acid, which is one of the most promising polymers based on renewable resources and is used mainly in packaging industry. This bio-based polymer is biodegradable and provides an ecological and economical alternative to petrochemical plastics. The largest cost blocks of biotechnological lactic acid production, accounting for up to 38% of the total costs, are substrate and nutrient sources, such as peptone, meat, and yeast extract. Based on a systematic analysis of nutritional requirements, the substitution of yeast extract by low-cost protein-rich agricultural hydrolysates was estimated for the production of l-lactic acid with Lactobacillus casei. Cultivations in 24-well microtiter plates enabled analysis of nutrient requirements and the usage of various hydrolysates with a high parallel throughput and repeated sampling. Rapeseed meal (RM) and distillers’ dried grains with solubles (DDGS) were tested as low-cost protein-rich agricultural residues. By using chemically or enzymatically hydrolyzed rapeseed meal or DDGS, 70% of the nutrient sources was replaced in the fermentation process at identical productivity and product yields. All in all, the total costs of l-lactic acid production with Lactobacillus casei could potentially be reduced by up to 23%.
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Chen PW, Cui ZY, Ng HS, Chi-Wei Lan J. Exploring the additive bio-agent impacts upon ectoine production by Halomonas salina DSM5928 T using corn steep liquor and soybean hydrolysate as nutrient supplement. J Biosci Bioeng 2020; 130:195-199. [PMID: 32370929 DOI: 10.1016/j.jbiosc.2020.03.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 02/27/2020] [Accepted: 03/21/2020] [Indexed: 11/20/2022]
Abstract
Ectoine production using inexpensive and renewable biomass resources has attracted great interest among the researchers due to the low yields of ectoine in current fermentation approaches that complicate the large-scale production of ectoine. In this study, ectoine was produced from corn steep liquor (CSL) and soybean hydrolysate (SH) in replacement to yeast extract as the nitrogen sources for the fermentation process. To enhance the bacterial growth and ectoine production, biotin was added to the Halomonas salina fermentation media. In addition, the effects addition of surfactants such as Tween 80 and saponin on the ectoine production were also investigated. Results showed that both the CSL and SH can be used as the nitrogen source substitutes in the fermentation media. Higher amount of ectoine (1781.9 mg L-1) was produced in shake flask culture with SH-containing media as compared to CSL-containing media. A total of 2537.0 mg L-1 of ectoine was produced at pH 7 when SH-containing media was applied in the 2 L batch fermentation. Moreover, highest amount of ectoine (1802.0 mg L-1) was recorded in the SH-containing shake flask culture with addition of 0.2 μm mL-1 biotin. This study demonstrated the efficacy of industrial waste as the nutrient supplement for the fermentation of ectoine production.
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Affiliation(s)
- Po-Wei Chen
- Biorefinery and Bioprocess Engineering Laboratory, Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan
| | - Zi-Yu Cui
- Biorefinery and Bioprocess Engineering Laboratory, Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan
| | - Hui Suan Ng
- Faculty of Applied Sciences, UCSI University, UCSI Heights, Cheras, Kuala Lumpur 56000, Malaysia
| | - John Chi-Wei Lan
- Biorefinery and Bioprocess Engineering Laboratory, Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan; Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Taoyuan 32003, Taiwan.
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Roy M, Zhelezniakov M, de Kort GW, Hawke LG, Leoné N, Rastogi S, Wilsens CH. On the nucleation of polylactide by melt-soluble oxalamide based organic compounds. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Utilizing Gelatinized Starchy Waste from Rice Noodle Factory as Substrate for L(+)-Lactic Acid Production by Amylolytic Lactic Acid Bacterium Enterococcus faecium K-1. Appl Biochem Biotechnol 2020; 192:353-366. [PMID: 32382944 DOI: 10.1007/s12010-020-03314-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/22/2020] [Indexed: 10/24/2022]
Abstract
To valorize starchy waste from rice noodle factory, bioconversion of gelatinized starchy waste (GSW) to value-added product as L(+)-lactic acid, the monomer for polylactate synthesis, was investigated using amylolytic lactic acid bacterium, Enterococcus faecium K-1. Screening for appropriate nitrogen source to replace expensive organic nitrogen sources revealed that corn steep liquor (CSL) was the most suitable regarding high efficacy for L(+)-LA achievement and low-cost property. The successful applying statistic experimental design, Plackett-Burman design incorporated with central composite design (CCD), predicted the maximum L(+)-LA of 93.07 g/L from the optimized medium (OM) containing 125.7 g/L GSW and 207.3 g/L CSL supplemented with CH3COONa, MgSO4, MnSO4, K2HPO4, CaCl2, (NH4)2HC6H5O7, and Tween80. Minimizing the medium cost by removal of all inorganic salts and Tween80 from OM was not an effect on L(+)-LA yield. Fermentation using the optimized medium without minerals (OM-Mi) containing only GSW (125.7 g/L) and CSL (207.3 g/L) in a 10-L fermenter was also successful. Thinning GSW with α-amylase from Lactobacillus plantarum S21 increased L(+)-LA productivity in the early stage of 24-h fermentation. Not only showing the feasible bioconversion process for GSW utilizing as a substrate for L(+)-LA production, this research also demonstrated the efficient model for industrial starchy waste valorization.
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14
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Díaz AB, González C, Marzo C, Caro I, Blandino A. Feasibility of exhausted sugar beet pulp as raw material for lactic acid production. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:3036-3045. [PMID: 32057099 DOI: 10.1002/jsfa.10334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/06/2020] [Accepted: 02/14/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Exhausted sugar beet pulp pellets (ESBPP), a sugar industry by-product generated after sugar extraction in the sugar production process, have been used as a raw material for lactic acid (LA) production via hydrolysis and fermentation by Lactobacillus casei. To design a more cost-effective process, simultaneous saccharification and fermentation (SSF) of ESBPP is proposed in the present study. The effects of pH control, nutrient supplementation and solid addition in fed-batch SSF on lactic acid production were investigated. RESULTS The highest LA concentration (26.88 g L-1 ) was reached in fed-batch SSF at a solid/liquid loading of 0.2 g mL-1 , with pH control (by adding 30 g L-1 CaCO3 to the medium) and nutrient supplementation (by adding 20 mL of MRS medium per 100 mL of buffer). Under these conditions, a maximum productivity of 0.63 g L-1 h-1 was achieved, which is 2.7 times higher than that attained in the control experiment (SSF inoculated at time 0 h). However, a slightly lower LA yield was obtained, revealing the need of an increasing dose of enzymes at high solid loading SSF. CONCLUSION An efficient fed-batch SSF strategy with pH control and MRS supplementation is described in the present study, attaining higher LA productivity compared to separate hydrolysis and fermentation and SSF. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Ana Belén Díaz
- Department of Chemical Engineering and Food Technology, IVAGRO Institute, Universidad de Cádiz, Puerto Real, Spain
| | - Claudia González
- Department of Chemical Engineering and Food Technology, IVAGRO Institute, Universidad de Cádiz, Puerto Real, Spain
| | - Cristina Marzo
- Department of Chemical Engineering and Food Technology, IVAGRO Institute, Universidad de Cádiz, Puerto Real, Spain
| | - Ildefonso Caro
- Department of Chemical Engineering and Food Technology, IVAGRO Institute, Universidad de Cádiz, Puerto Real, Spain
| | - Ana Blandino
- Department of Chemical Engineering and Food Technology, IVAGRO Institute, Universidad de Cádiz, Puerto Real, Spain
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Production of D-Lactic Acid by the Fermentation of Orange Peel Waste Hydrolysate by Lactic Acid Bacteria. FERMENTATION-BASEL 2019. [DOI: 10.3390/fermentation6010001] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Lactic acid is one the most interesting monomer candidates to replace some petroleum- based monomers. The application of conventional poly-lactic acid (PLA) is limited due to insufficient thermal properties. This limitation can be overcome by blending poly-D and poly-L-lactic acid. The main problem is the limited knowledge of D-lactic acid (D-LA) production. Efficient biochemical processes are being developed in order to synthesize D-LA from orange peel waste (OPW). OPW is an interesting renewable raw material for biorefinery processes of biocatalytic, catalytic or thermal nature owing to its low lignin and ash content. Bioprocessing of the pretreated OPW is carried out by enzymatic hydrolysis and fermentation of the released sugars to produce D-LA. Several strains of the species Lactobacillus delbrueckii ssp. bulgaricus have been evaluated for the production of D-LA from OPW hydrolysate using Lactobacillus delbrueckii ssp. delbrueckii CECT 286 as a reference strain since its performance in this kind of substrate have been widely reported in previous studies. Preliminary results show that Lactobacillus delbrueckii ssp. bulgaricus CECT 5037 had the best performance with a yield of 84% w/w for D-LA production and up to 95% (e.e.).
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Han X, Li L, Bao J. Microbial extraction of biotin from lignocellulose biomass and its application on glutamic acid production. BIORESOURCE TECHNOLOGY 2019; 288:121523. [PMID: 31146079 DOI: 10.1016/j.biortech.2019.121523] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/17/2019] [Accepted: 05/18/2019] [Indexed: 06/09/2023]
Abstract
Biotin (vitamin B7) is an important nutrient for various fermentations. It is abundant in agricultural lignocellulose biomass and maintains stable in biorefinery processing chain including acid pretreatment, biodetoxification and saccharification. Here we show a microbial extraction of biotin from biotin-rich corn leaves hydrolysate. Corynebacterium glutamicum was found to have the highest biotin uptake capacity among different biotin auxotrophic microorganisms, and it was further significantly increased by overexpressing the bioYMN gene cluster encoding biotin transporter. Finally 250 folds greater biotin was extracted by recombinant C. glutamicum (303.8 mg/kg dry cell) from virgin corn leaves (1.2 mg/kg), which was far higher than that in commonly used fermentation additives including yeast extract (∼2 mg/kg), molasses (∼1 mg/kg) and corn steep liquor (∼0.75 mg/kg). The biotin extracted from corn leaves was successfully applied to glutamic acid fermentation. This is the first report on microbial extraction of biotin from lignocellulose biomass and fermentation promotion application.
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Affiliation(s)
- Xushen Han
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Li Li
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jie Bao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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Production of D-lactic acid by Lactobacillus delbrueckii ssp. delbrueckii from orange peel waste: techno-economical assessment of nitrogen sources. Appl Microbiol Biotechnol 2018; 102:10511-10521. [PMID: 30324487 DOI: 10.1007/s00253-018-9432-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/19/2018] [Accepted: 09/25/2018] [Indexed: 10/28/2022]
Abstract
In this study, the effect of several organic nitrogen sources (namely peptone, meat extract-ME, yeast extract-YE, and corn steep liquor-CSL) on D-lactic acid production by Lactobacillus delbrueckii ssp. delbrueckii has been studied. While lactic acid bacteria (LAB) are well-known for their complex nutritional requirements, organic nitrogen source-related cost can be as high as 38% of total operational costs (OPEX), being its nature and concentration critical factors in the growth and productivity of the selected strain. Corn steep liquor (CSL) has been chosen for its adequacy, on the grounds of the D-lactic acid yield, productivity, and its cost per kilogram of product. Finally, orange peel waste hydrolysate supplemented with 37 g/l CSL has been employed for D-lactic acid production, reaching a final yield of 88% and a productivity of 2.35 g/l h. CSL cost has been estimated at 90.78$/ton of D-lactate.
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Hatti-Kaul R, Chen L, Dishisha T, Enshasy HE. Lactic acid bacteria: from starter cultures to producers of chemicals. FEMS Microbiol Lett 2018; 365:5087731. [DOI: 10.1093/femsle/fny213] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 08/29/2018] [Indexed: 12/26/2022] Open
Affiliation(s)
- Rajni Hatti-Kaul
- Biotechnology, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Lu Chen
- Biotechnology, Center for Chemistry and Chemical Engineering, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Tarek Dishisha
- Department of Microbiology and Immunology, Faculty of Pharmacy, Beni-Suef University, 62511 Beni-Suef, Egypt
| | - Hesham El Enshasy
- Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia (UTM), 81 310 Skudai, Johor, Malaysia
- City of Scientific Research and Technology Applications, New Burg Al Arab, Alexandria, Egypt
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Fan B, You J, Suo Y, Qian C. A novel and sensitive method for determining vitamin B3 and B7 by pre-column derivatization and high-performance liquid chromatography method with fluorescence detection. PLoS One 2018; 13:e0198102. [PMID: 29874249 PMCID: PMC5991410 DOI: 10.1371/journal.pone.0198102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 05/14/2018] [Indexed: 11/18/2022] Open
Abstract
A new labeling reagent for vitamin analysis, 2-amino-10-ethyl acridine ketone (AEAO), has been synthesized and successfully applied to the analysis of vitamin B3 and vitamin B7 in different tea samples. The reaction of AEAO with vitamins could proceed easily and quickly in the presence of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide hydrochloride (EDC) as condensing reagent within 45 min. The derivatives exhibited excellent fluorescence property with excitation and emission wavelengths of 290 nm and 430 nm, respectively. Response surface methodology (RSM) was applied to the optimization of pre-column derivatization. Solid phase extraction with HLB cartridges was used for the extraction and purification of water-soluble vitamins in tea samples. The LODs for vitamin B3 and vitamin B7 were 2.56 and 2.22 ng mL-1, respectively. The proposed method was successfully applied to the analysis of vitamin B3 and vitamin B7 in different tea samples. The study provided a highly sensitive method for accurate analysis of trace vitamins from natural products.
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Affiliation(s)
- Baolei Fan
- Hubei University of Science and Technology, Xianning, PR China
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China
| | - Jinmao You
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China
| | - Yourui Suo
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China
- * E-mail: (YS); (CQ)
| | - Chunqi Qian
- Michigan State University, East Lansing, MI, United States of America
- * E-mail: (YS); (CQ)
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Yao C, Chou J, Wang T, Zhao H, Zhang B. Pantothenic Acid, Vitamin C, and Biotin Play Important Roles in the Growth of Lactobacillus helveticus. Front Microbiol 2018; 9:1194. [PMID: 29922266 PMCID: PMC5996940 DOI: 10.3389/fmicb.2018.01194] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 05/16/2018] [Indexed: 11/13/2022] Open
Abstract
Lactobacillus helveticus is an important lactic acid bacterium. The strains used in this study have proven probiotic function, and the potential to produce functional dairy products and bioactive peptides. To explore the effects of vitamins on the growth of L. helveticus, a chemically defined medium was designed and nine vitamins were tested. Pantothenic acid (Vb5), vitamin C (Vc), and biotin were necessary for the growth of L. helveticus CICC 22171. These three vitamins had an important effect on the glucose metabolism and energy metabolism of strain CICC 22171. Through transcriptomic analysis, we found that three vitamins were related to the synthesis of fatty acids and participate in the energy supply of the cells. Additionally, Vb5 was involved in the metabolism of bacterial proteins and lipids and was related to the activity of various enzymes. The results indicated that Vc was involved in protein metabolism, and biotin affected the intracellular transport mechanism of bacteria. The ability of vitamins to promote the growth of the strain was verified in skim milk medium. The results indicated that Vc, biotin, and Vb5 could promote the proliferation of L. helveticus but had no significant effect on Lactobacillus bulgaricus.
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Affiliation(s)
- Chunxiao Yao
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Jiandong Chou
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Tao Wang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Hongfei Zhao
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Beijing Key Laboratory of Food Processing and Safety in Forestry, Beijing, China
| | - Bolin Zhang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Beijing Key Laboratory of Food Processing and Safety in Forestry, Beijing, China
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21
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Chavan M, Gat Y, Harmalkar M, Waghmare R. Development of non-dairy fermented probiotic drink based on germinated and ungerminated cereals and legume. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.01.070] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Ahmad QUA, Yang ST, Manzoor M, Qazi JI. Moderate alkali-thermophilic ethanologenesis by locally isolated Bacillus licheniformis from Pakistan employing sugarcane bagasse: a comparative aspect of aseptic and non-aseptic fermentations. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:105. [PMID: 28450886 PMCID: PMC5402650 DOI: 10.1186/s13068-017-0785-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 04/11/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Biofuels obtained from first-generation (1G) sugars-starch streams have been proven unsustainable as their constant consumption is not only significantly costly for commercial scale production systems, but it could potentially lead to problems associated with extortionate food items for human usage. In this regard, biofuels' production in alkali-thermophilic environs from second-generation (2G) bio-waste would not only be markedly feasible, but these extreme conditions might be able to sustain aseptic fermentations without spending much for sterilization. RESULTS Present investigation deals with the valuation of ethanologenic potential of locally isolated moderate alkali-thermophilic fermentative bacterium, Bacillus licheniformis KU886221 employing sugarcane cane bagasse (SCB) as substrate. A standard 2-factor central composite response surface design was used to estimate the optimized cellulolytic and hemicellulolytic enzymatic hydrolysis of SCB into maximum fermentable sugars. After elucidation of optimized levels of fermentation factors affecting ethanol fermentation using Taguchi OA L27 (3^13) experimental design, free cell batch culture was carried out in bench-scale stirred-tank bioreactor for ethanol fermentation. Succeeding fermentation modifications included subsequent substrate addition, immobilized cells fibrous-bed bioreactor (FBB) incorporation to the basic setup, and performance of in situ gas stripping for attaining improved ethanol yield. Highest ethanol yield of 1.1406 mol ethanol/mol of equivalent sugars consumed was obtained when gas stripping was performed during fed-batch fermentation involving FBB under aseptic conditions. Despite the fact that under non-aseptic conditions, 30.5% lesser ethanol was formed, still, reduced yield might be considered influential as it saved the cost of sterilization for ethanol production. CONCLUSION Effectual utilization of low-priced abundantly available lignocellulosic waste sugarcane bagasse under non-aseptic moderate alkali-thermophilic fermentation conditions as directed in this study has appeared very promising for large-scale cost-effective bioethanol generation processes.
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Affiliation(s)
| | - Shang-Tian Yang
- Department of Chemical & Biomolecular Engineering, Ohio State University, Columbus, OH USA
| | | | - Javed Iqbal Qazi
- Department of Zoology, University of the Punjab, Lahore, Pakistan
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23
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Biorefinery-Based Lactic Acid Fermentation: Microbial Production of Pure Monomer Product. SYNTHESIS, STRUCTURE AND PROPERTIES OF POLY(LACTIC ACID) 2017. [DOI: 10.1007/12_2016_11] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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24
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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: 2.6] [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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26
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Zhang Y, Kumar A, Hardwidge PR, Tanaka T, Kondo A, Vadlani PV. d-lactic acid production from renewable lignocellulosic biomass via genetically modifiedLactobacillus plantarum. Biotechnol Prog 2016; 32:271-8. [DOI: 10.1002/btpr.2212] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 12/03/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Yixing Zhang
- Dept. of Grain Science and Industry, Bioprocessing and Renewable Energy Laboratory; Kansas State University; Manhattan KS 66506
| | - Amit Kumar
- Dept. of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine; Kansas State University; Manhattan KS 66506
| | - Philip R. Hardwidge
- Dept. of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine; Kansas State University; Manhattan KS 66506
| | - Tsutomu Tanaka
- Dept. of Chemical Science and Engineering, Graduate School of Engineering; Kobe University, 1-1 Rokkodaicho; Nada Kobe 657-8501 Japan
| | - Akihiko Kondo
- Dept. of Chemical Science and Engineering, Graduate School of Engineering; Kobe University, 1-1 Rokkodaicho; Nada Kobe 657-8501 Japan
| | - Praveen V. Vadlani
- Dept. of Grain Science and Industry, Bioprocessing and Renewable Energy Laboratory; Kansas State University; Manhattan KS 66506A
- Dept. of Chemical Engineering; Kansas State University; Manhattan KS 66506
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27
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Zhang Y, Vadlani PV, Kumar A, Hardwidge PR, Govind R, Tanaka T, Kondo A. Enhanced D-lactic acid production from renewable resources using engineered Lactobacillus plantarum. Appl Microbiol Biotechnol 2016; 100:279-88. [PMID: 26433970 DOI: 10.1007/s00253-015-7016-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/24/2015] [Accepted: 09/16/2015] [Indexed: 10/23/2022]
Abstract
D-lactic acid is used as a monomer in the production of poly-D-lactic acid (PDLA), which is used to form heat-resistant stereocomplex poly-lactic acid. To produce cost-effective D-lactic acid by using all sugars derived from biomass efficiently, xylose-assimilating genes encoding xylose isomerase and xylulokinase were cloned into an L-lactate-deficient strain, Lactobacillus plantarum. The resulting recombinant strain, namely L. plantarum NCIMB 8826 ∆ldhL1-pLEM-xylAB, was able to produce D-lactic acid (at optical purity >99 %) from xylose at a yield of 0.53 g g(-1). Simultaneous utilization of glucose and xylose to produce D-lactic acid was also achieved by this strain, and 47.2 g L(-1) of D-lactic acid was produced from 37.5 g L(-1) glucose and 19.7 g L(-1) xylose. Corn stover and soybean meal extract (SBME) were evaluated as cost-effective medium components for D-lactic acid production. Optimization of medium composition using response surface methodology resulted in 30 % reduction in enzyme loading and 70 % reduction in peptone concentration. In addition, we successfully demonstrated D-lactic acid fermentation from corn stover and SBME in a fed-batch fermentation, which yielded 61.4 g L(-1) D-lactic acid with an overall yield of 0.77 g g(-1). All these approaches are geared to attaining high D-lactic acid production from biomass sugars to produce low-cost, highly thermostable biodegradable plastics.
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Affiliation(s)
- Yixing Zhang
- Bioprocessing and Renewable Energy Laboratory, Department of Grain Science and Industry, Kansas State University, Manhattan, KS, USA.
| | - Praveen V Vadlani
- Bioprocessing and Renewable Energy Laboratory, Department of Grain Science and Industry, Kansas State University, Manhattan, KS, USA
- Department of Chemical Engineering, Kansas State University, Manhattan, KS, USA
| | - Amit Kumar
- Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA
| | - Philip R Hardwidge
- Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA
| | - Revathi Govind
- Division of Biology, Kansas State University, Manhattan, KS, USA
| | - Tsutomu Tanaka
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada, Kobe, 657-8501, Japan
| | - Akihiko Kondo
- Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada, Kobe, 657-8501, Japan
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Use of dry yeast cells as a cheap nitrogen source for lactic acid production by thermophilic Bacillus coagulans WCP10-4. Front Chem Sci Eng 2015. [DOI: 10.1007/s11705-015-1534-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Cingadi S, Srikanth K, E.V.R A, Sivaprakasam S. Statistical optimization of cassava fibrous waste hydrolysis by response surface methodology and use of hydrolysate based media for the production of optically pure d-lactic acid. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.02.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Atilola OA, Gyawali R, Aljaloud SO, Ibrahim SA. Use of Phytone Peptone to Optimize Growth and Cell Density of Lactobacillus reuteri. Foods 2015; 4:318-327. [PMID: 28231207 PMCID: PMC5224542 DOI: 10.3390/foods4030318] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 06/25/2015] [Accepted: 07/24/2015] [Indexed: 11/29/2022] Open
Abstract
The objective of this study was to determine the use of phytone peptone to optimize the growth and cell density of Lactobacillus reuteri. Four strains of L. reuteri (DSM 20016, SD 2112, CF 2-7F, and MF 2-3,) were used in this study. An overnight culture of individual strains was inoculated into fresh basal media with various protein sources (peptone, tryptone, proteose peptone #3, phytone peptone, tryptic soy broth, yeast extract, and beef extract). Samples were then mixed well and incubated at 37 °C for 15 h. Bacterial growth was monitored by measuring turbidity (optical density 610 nm) at different time intervals during the incubation period. At the end of incubation, samples were plated on de-Man Rogosa Sharpe (MRS) agar to determine the bacterial population. Our results showed that phytone peptone promoted the growth of L. reuteri (p < 0.05) by 1.4 log CFU/mL on average compared to the control samples. Therefore, phytone peptone could be included in laboratory media to enhance growth and increase the cell density of L. reuteri.
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Affiliation(s)
- Olabiyi A Atilola
- Food Microbiology and Biotechnology Laboratory, Agricultural and Technical State University, 173 Carver Hall, Greensboro, NC 27411, USA.
| | - Rabin Gyawali
- Food Microbiology and Biotechnology Laboratory, Agricultural and Technical State University, 173 Carver Hall, Greensboro, NC 27411, USA.
| | - Sulaiman O Aljaloud
- Department of Exercise Physiology, College of Sport Sciences and Physical Activity King Saud University, P.O. Box 2458, Riyadh, 11451, Saudi Arabia.
| | - Salam A Ibrahim
- Food Microbiology and Biotechnology Laboratory, Agricultural and Technical State University, 173 Carver Hall, Greensboro, NC 27411, USA.
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31
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Panesar PS, Kaur S. Bioutilisation of agro-industrial waste for lactic acid production. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12886] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Parmjit S. Panesar
- Biotechnology Research Laboratory; Department of Food Engineering and Technology; Sant Longowal Institute of Engineering and Technology; Longowal 148106 Punjab India
| | - Shubhneet Kaur
- Biotechnology Research Laboratory; Department of Food Engineering and Technology; Sant Longowal Institute of Engineering and Technology; Longowal 148106 Punjab India
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32
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The influence of calcium-carbonate and yeast extract addition on lactic acid fermentation of brewer's spent grain hydrolysate. Food Res Int 2015. [DOI: 10.1016/j.foodres.2014.12.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Microorganisms for the Production of Lactic Acid and Organic Lactates. MICROORGANISMS IN BIOREFINERIES 2015. [DOI: 10.1007/978-3-662-45209-7_9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Kanpiengjai A, Rieantrakoonchai W, Pratanaphon R, Pathom-aree W, Lumyong S, Khanongnuch C. High efficacy bioconversion of starch to lactic acid using an amylolytic lactic acid bacterium isolated from Thai indigenous fermented rice noodles. Food Sci Biotechnol 2014. [DOI: 10.1007/s10068-014-0210-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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35
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Moon SK, Wee YJ, Choi GW. Utilization of by-products derived from bioethanol production process for cost-effective production of lactic acid. J Ind Microbiol Biotechnol 2014; 41:1525-31. [PMID: 25163666 DOI: 10.1007/s10295-014-1495-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 07/26/2014] [Indexed: 11/27/2022]
Abstract
The by-products of bioethanol production such as thin stillage (TS) and condensed distillers solubles (CDS) were used as a potential nitrogen source for economical production of lactic acid. The effect of those by-products and their concentrations on lactic acid fermentation were investigated using Lactobacillus paracasei CHB2121. Approximately, 6.7 g/L of yeast extract at a carbon source to nitrogen source ratio of 15 was required to produce 90 g/L of lactic acid in the medium containing 100 g/L of glucose. Batch fermentation of TS medium resulted in 90 g/L of lactic acid after 48 h, and the medium containing 10 % CDS resulted in 95 g/L of lactic acid after 44 h. Therefore, TS and CDS could be considered as potential alternative fermentation medium for the economical production of lactic acid. Furthermore, lactic acid fermentation was performed using only cassava and CDS for commercial production of lactic acid. The volumetric productivity of lactic acid [2.94 g/(L·h)] was 37 % higher than the productivity obtained from the medium with glucose and CDS.
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Affiliation(s)
- Se-Kwon Moon
- Changhae Advanced Institute of Technology, Changhae Ethanol Co., Ltd., Palbok-Dong 829, Dukjin-Gu, Jeonju, 561-203, Republic of Korea
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Zhang S, Shi Y, Zhang S, Shang W, Gao X, Wang H. Whole soybean as probiotic lactic acid bacteria carrier food in solid-state fermentation. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.12.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Wang Y, Yang Z, Qin P, Tan T. Fermentative l-(+)-lactic acid production from defatted rice bran. RSC Adv 2014. [DOI: 10.1039/c3ra46140h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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Ma K, Maeda T, You H, Shirai Y. Open fermentative production of L-lactic acid with high optical purity by thermophilic Bacillus coagulans using excess sludge as nutrient. BIORESOURCE TECHNOLOGY 2014; 151:28-35. [PMID: 24201025 DOI: 10.1016/j.biortech.2013.10.022] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Revised: 10/05/2013] [Accepted: 10/07/2013] [Indexed: 05/13/2023]
Abstract
The development of a low-cost polymer-grade L-lactic acid production process was achieved in this study. Excess sludge hydrolyzate (ESH) was chosen as nutrient source for the objective of reducing nutrient cost in lactic acid production. 1% of ESH had high performance in lactic acid production relative to 2g/l yeast extract (YE) while the production cost of ESH was much lower than that of YE, indicating ESH was a promising substitute of YE. By employing a thermophilic strain of Bacillus coagulans (NBRC 12583), non-sterilized batch and repeated batch L-lactic acid fermentation was successfully performed, and the optical purity of L-lactic acid accumulated was more than 99%. Moreover, the factors associated with cell growth and lactic acid fermentation was investigated through a two-stage lactic acid production strategy. Oxygen played an important role in cell growth, and the optimal condition for cell growth and fermentation was pH 7.0 and 50°C.
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Affiliation(s)
- Kedong Ma
- College of Environmental and Chemical Engineering, Dalian University, Dalian 116622, People's Republic of China; Department of Biological Functions and Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsh-ku, Kitakyushu 808-0196, Japan.
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Dhar P, Tayade AB, Kumar J, Chaurasia OP, Srivastava RB, Singh SB. Nutritional profile of phytococktail from trans-Himalayan plants. PLoS One 2013; 8:e83008. [PMID: 24376624 PMCID: PMC3871620 DOI: 10.1371/journal.pone.0083008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 11/07/2013] [Indexed: 01/24/2023] Open
Abstract
We estimated the nutritive value, vitamin content, amino acid composition, fatty acid content, and mineral profile of a phytococktail comprising sea buckthorn (Hippophae rhamnoides), apricot (Prunus armeniaca), and roseroot (Rhodiola imbricata) from trans-Himalaya. The free vitamin forms in the phytococktail were determined by rapid resolution liquid chromatography/tandem mass spectrometry (RRLC-MS/MS). Vitamin E and B-complex vitamins were detected as the principle vitamins. Reversed-phase high performance liquid chromatography (RP-HPLC) with pre-column derivatization was used for identification and quantification of amino acids. Eight essential and eleven non-essential amino acids were quantified, and the content ranged between 76.33 and 9485.67 µg/g. Among the essential amino acids, L-methionine, L-phenylalanine, L-lysine, L-leucine, and L-histidine were found to be the dominant contributors. We also quantified the fatty acids in the phytococktail by using gas chromatography coupled with a flame ionization detector (GC-FID) with fatty acid methyl esters (FAMEs) derivatization. The analysis revealed the presence of 4 major fatty acids contributing to the total lipid content. Palmitic acid was found to be the rich source of saturated fatty acid (SFA) and constituted ∼31% of the total lipid content. Among the unsaturated fatty acids (UFAs), palmitoleic acid (43.47%), oleic acid (20.89%), and linoleic acid (4.31%) were prominent. The mineral profiling was carried out by inductively coupled plasma optical emission spectrometer (ICP-OES), and it was found to contain a number of important dietary mineral elements. The harsh climatic conditions, difficult terrain, and logistic constraints at high altitude regions of Indian trans-Himalayan cold desert lead to the scarcity of fresh fruits and vegetables. Therefore, the source of multiple vitamins, essential amino acids, fatty acids, and dietary minerals from the phytococktail would provide great health benefit in the stressful environment and could be used as a high value nutritional supplement.
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Affiliation(s)
- Priyanka Dhar
- Defence Institute of High Altitude Research, Defence Research and Development Organisation, Leh-Ladakh, Jammu and Kashmir, India
| | - Amol B. Tayade
- Defence Institute of High Altitude Research, Defence Research and Development Organisation, Leh-Ladakh, Jammu and Kashmir, India
| | - Jatinder Kumar
- Defence Institute of High Altitude Research, Defence Research and Development Organisation, Leh-Ladakh, Jammu and Kashmir, India
| | - Om P. Chaurasia
- Defence Institute of High Altitude Research, Defence Research and Development Organisation, Leh-Ladakh, Jammu and Kashmir, India
- * E-mail:
| | - Ravi B. Srivastava
- Defence Institute of High Altitude Research, Defence Research and Development Organisation, Leh-Ladakh, Jammu and Kashmir, India
| | - Shashi B. Singh
- Defence Institute of Physiology and Allied Sciences, Defence Research and Development Organisation, Timarpur, Delhi, India
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40
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Lew LC, Choi SB, Tan PL, Liong MT. Mn(2+) and Mg(2+) synergistically enhanced lactic acid production by Lactobacillus rhamnosus FTDC 8313 via affecting different stages of the hexose monophosphate pathway. J Appl Microbiol 2013; 116:644-53. [PMID: 24267975 DOI: 10.1111/jam.12399] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 10/10/2013] [Accepted: 11/15/2013] [Indexed: 11/28/2022]
Abstract
AIMS The study aimed to evaluate the effects of Mn(2+) and Mg(2+) on lactic acid production using response surface methodology and to further study their effects on interactions between the enzymes and substrates along the hexose monophosphate pathway using a molecular modelling approach. METHODS AND RESULTS A rotatable central composite design matrix for lactic acid production was generated with two independent factors namely, manganese sulfate and magnesium sulfate. The second-order regression model indicated that the quadratic model was significant (P < 0·05), suggesting that the model accurately represented the data in the experimental region. Three-dimensional response surface showed that lactic acid production was high along the region where the ratio of MnSO4 to MgSO4 was almost 1 : 1, justifying the need for both Mg(2+) and Mn(2+) to be present simultaneously in stimulating the production of lactic acid. Molecular docking simulation was performed on a total of 13 essential enzymes involved in the hexose monophosphate pathway for the production of lactic acid with four different conditions namely in the presence of Mg(2+) , Mn(2+) , both Mg(2+) and Mn(2+) and in the absence of metal ions. Results showed that the presence of both Mg(2+) and Mn(2+) within the binding site improved the binding affinity for substrates in five enzymes namely, glucose-6-phosphate dehydrogenase, phosphogluconate dehydrogenase, glyceraldehyde-3-phosphate dehydrogenase, phosphopyruvate hydratase and pyruvate kinase. CONCLUSIONS Using response surface methodology and molecular modelling approach, we illustrated that Mg(2+) and Mn(2+) synergistically enhanced lactic acid production by Lactobacillus rhamnosus FTDC 8313 via affecting different stages of the hexose monophosphate pathway. SIGNIFICANCE AND IMPACTS OF THE STUDY Mg(2+) and Mn(2+) synergistically improved lactic acid production of Lact. rhamnosus via improved binding affinity of the enzyme-substrate along the hexose monophosphate pathway, instead of purely affecting growth as previously understood.
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Affiliation(s)
- L-C Lew
- School of Industrial Technology, Universiti Sains Malaysia, Penang, Malaysia
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41
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Improvement of Lactobacillus brevis NM101-1 grown on sugarcane molasses for mannitol, lactic and acetic acid production. ANN MICROBIOL 2013. [DOI: 10.1007/s13213-013-0733-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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42
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Tayade AB, Dhar P, Kumar J, Sharma M, Chaurasia OP, Srivastava RB. Sequential determination of fat- and water-soluble vitamins in Rhodiola imbricata root from trans-Himalaya with rapid resolution liquid chromatography/tandem mass spectrometry. Anal Chim Acta 2013; 789:65-73. [DOI: 10.1016/j.aca.2013.05.062] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 05/26/2013] [Accepted: 05/31/2013] [Indexed: 12/01/2022]
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Zhang Q, Brashears MM, Yu Z, Ren J, Li Y, Zhao M. Effect of ultrafiltered fractions from casein on lactic acid biosynthesis and enzyme activity in yoghurt starter cultures. Int J Food Sci Technol 2013; 48:1474-1482. [DOI: 10.1111/ijfs.12115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 01/19/2013] [Indexed: 11/30/2022]
Abstract
SummaryIn this work, five ultrafiltered fractions (UFs) with molecular mass less than 3 kDa (kilo‐daltons) from casein hydrolysates treated with alcalase, flavourzyme, neutrase, papain and trypsin, respectively, were obtained. The effect of five UFs on the fermentation for lactic acid (LA) production by mixed cultures of Streptococcus thermophilus (St) and Lactobacillus delbrueckii subsp. bulgaricus (Lb) during 72 h of cultivation was investigated. Compared with the control, LA production was, respectively, enhanced by 23.66%, 39.01%, 29.74%, 49.64% and 47.40% with the supplement of UF‐A, UF‐F, UF‐N, UF‐P and UF‐T at 24 h. The possible mechanism of LA production enhanced was elucidated by the time course analysis of the specific activity of glucokinase, phosphoglucose isomerase, 6‐phosphofructokinase, pyruvate kinase and lactate dehydrogenase during fermentation process. In addition, the results obtained showed the diverse influence of five UFs on the bacterial fermentation was attributed to their different amino acid distribution.
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Affiliation(s)
- Qingli Zhang
- College of Light Industry and Food Sciences South China University of Technology Guangzhou 510640 China
- Department of Animal and Food Sciences Texas Tech University Lubbock TX 79409 USA
| | - Mindy M. Brashears
- Department of Animal and Food Sciences Texas Tech University Lubbock TX 79409 USA
| | - Zhimin Yu
- School of Biological Engineering Dalian Polytechnic University Dalian 116038 China
| | - Jiaoyan Ren
- College of Light Industry and Food Sciences South China University of Technology Guangzhou 510640 China
| | - Yinjuan Li
- College of Light Industry and Food Sciences South China University of Technology Guangzhou 510640 China
| | - Mouming Zhao
- College of Light Industry and Food Sciences South China University of Technology Guangzhou 510640 China
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Production optimization of invertase by Lactobacillus brevis Mm-6 and its immobilization on alginate beads. Carbohydr Polym 2013; 93:740-6. [DOI: 10.1016/j.carbpol.2012.12.039] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 12/13/2012] [Indexed: 01/06/2023]
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45
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Xue Z, Wang L, Ju J, Yu B, Xu P, Ma Y. Efficient production of polymer-grade L-lactic acid from corn stover hydrolyzate by thermophilic Bacillus sp. strain XZL4. SPRINGERPLUS 2012; 1:43. [PMID: 23961368 PMCID: PMC3725914 DOI: 10.1186/2193-1801-1-43] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2012] [Accepted: 10/23/2012] [Indexed: 11/10/2022]
Abstract
Lactic acid has been identified as one of the top 30 potential building-block chemicals from biomass. Therefore, the search for cheap raw materials is an objective to reduce the production costs. Efficient polymer-grade L-lactic acid production was achieved in this report by a thermophilic strain Bacillus sp. XZL4 using corn stover hydrolyzate as sole carbon source. High L-lactic acid concentration (81.0 g L-1) was obtained from 162.5 g L-1 concentrated corn stover hydrolyzate (total reducing sugar of 83.0 g L-1) with a volumetric productivity of 1.86 g L-1 h-1 (0–36 h) and a product yield of 0.98 g g-1 total reducing sugars. This is the highest L-lactic acid concentration and yield reported from corn stover hydrolyzate. And the high optical purity of L-lactic acid obtained in this study also indicated that Bacillus sp. XZL4 is a promising polymer-grade L-lactic-acid producer from cellulosic biomass.
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Affiliation(s)
- Zhangwei Xue
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101 China ; College of Life Science, Hebei Normal University, Shijiazhuang, 050016 China
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Gao T, Wong Y, Ng C, Ho K. L-lactic acid production by Bacillus subtilis MUR1. BIORESOURCE TECHNOLOGY 2012; 121:105-110. [PMID: 22858473 DOI: 10.1016/j.biortech.2012.06.108] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Revised: 06/28/2012] [Accepted: 06/29/2012] [Indexed: 06/01/2023]
Abstract
Bacillus subtilis MUR1 is a novel lactic acid (LA) producing strain that has the potential for industrial production of LA due to its high productivity of LA, high yield of substrate conversion, and high final concentration of LA produced. B. subtilis MUR1 can produce 99.3 and 183.2g/l of L-LA in 12 and 52 h respectively with a 98.5% substrate conversion yield and a maximum L-LA production rate of 16.1g/l/h. Compared with batch culture, and several fed-batch cultures with different initial glucose concentrations, the fed-batch culture with initial 30 g/l glucose produced the highest final concentration and productivity of L-LA. Corn steep liquor can be used to partly replace yeast extract in the production medium for the production of L-LA by B. subtilis MUR1.
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Affiliation(s)
- Ting Gao
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong SAR, China
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47
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Gao MT, Shimamura T, Ishida N, Takahashi H. Investigation of utilization of the algal biomass residue after oil extraction to lower the total production cost of biodiesel. J Biosci Bioeng 2012; 114:330-3. [DOI: 10.1016/j.jbiosc.2012.04.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 03/22/2012] [Accepted: 04/05/2012] [Indexed: 12/01/2022]
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48
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Meng Y, Xue Y, Yu B, Gao C, Ma Y. Efficient production of L-lactic acid with high optical purity by alkaliphilic Bacillus sp. WL-S20. BIORESOURCE TECHNOLOGY 2012; 116:334-339. [PMID: 22534372 DOI: 10.1016/j.biortech.2012.03.103] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 03/26/2012] [Accepted: 03/28/2012] [Indexed: 05/31/2023]
Abstract
Highly efficient polymer-grade L-lactic acid production was achieved by an alkaliphilic strain Bacillus sp. WL-S20 using inexpensive peanut meal as nitrogen source and sodium hydroxide as neutralizing agent. In multi-pulse fed-batch fermentation of Bacillus sp. WL-S20, a L-lactic acid concentration of 225 g/l with a yield of 99.3% was obtained. In single-pulse fed-batch fermentation, a concentration of 180 g/l was obtained with a yield of 98.6%. No D-isomers of lactic acid were detected. The production of a high concentration of optically pure L-lactic acid by alkaliphilic Bacillus sp. WL-S20, combined with a low-cost nutrient and environment-friendly NaOH-based process, represent a potentially novel way for L-lactic acid production at an industrial scale.
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Affiliation(s)
- Ying Meng
- National Engineering Laboratory for Industrial Enzymes, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
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49
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Wang Q, Zhao X, Chamu J, Shanmugam KT. Isolation, characterization and evolution of a new thermophilic Bacillus licheniformis for lactic acid production in mineral salts medium. BIORESOURCE TECHNOLOGY 2011; 102:8152-8. [PMID: 21704521 DOI: 10.1016/j.biortech.2011.06.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 05/31/2011] [Accepted: 06/01/2011] [Indexed: 05/08/2023]
Abstract
The high fermentation cost of lactic acid is a barrier for polylactic acid (PLA) to compete with the petrochemical derived plastics. In order to lower the cost of lactic acid, the industry needs a microorganism that can ferment various sugars at high temperature (50°C) and at the same time using low cost mineral salts (MS) medium. One such bacterium, BL1, was isolated at 50°C and identified as Bacillus licheniformis. BL1 can ferment glucose to optically pure l-lactate with a maximum specific productivity of 7.8 g/hl in LB medium and 0.7 g/hl in MS medium at 50°C. BL1 can also consume 10% and 15% glucose in 20 and 48 h, respectively. After serial transfer of BL1 and BL2 in different concentrations of xylose and MS medium respectively, the final mutant BL3 could efficiently ferment glucose and xylose with specific productivity of 1.9 g/hl and 1.2g/hl in strict MS medium.
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Affiliation(s)
- Qingzhao Wang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, People's Republic of China.
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50
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Kim KM, Jung TS, Ok S, Ko CY, Kang JS. In vitro characterization study of Bacillus mojavensis KJS-3 for a potential probiotic. Food Sci Biotechnol 2011. [DOI: 10.1007/s10068-011-0158-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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