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Saady M, Shoman NA, Teaima M, Abdelmonem R, El-Nabarawi MA, Elhabal SF. Fabrication of gastro-floating sustained-release etoricoxib and famotidine tablets: design, optimization , in-vitro, and in-vivo evaluation. Pharm Dev Technol 2024; 29:429-444. [PMID: 38607310 DOI: 10.1080/10837450.2024.2343320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 04/11/2024] [Indexed: 04/13/2024]
Abstract
In this study, a new gastro-floating sustained-release tablet (GFT) with a combination of Etoricoxib (ET) and Famotidine (FM) was successfully developed. GFTs were prepared by using a combination of hydrophilic swellable natural/semi-synthetic polymers as a controlled-release layer. Through a 24 full factorial statistical experimental design, the effects of formulation factors on the release of GFTs were conducted. The ideal floating tablet (FT) comprised konjac-gum (150 mg), guar-gum (26.57 mg), xanthan-gum (54.17 mg), and HPMC-K15-M (69.25 mg). The ideal FT exhibited a high swelling index (SI) (297.7%) and rapid FLT (around 50 s) in 0.1 N HCl as well as controlled release of ET (22.43% in 1 h and 77.47% in 8 h) and FM (24.89% in 1 h and 93.82% in 8 h) with the absence of any drug-excipient interactions. The AUC0∼72 (ng h/mL) of ET and FM in the GFTs were approximately double-fold of the market, respectively. The relative bioavailability was (207.48 ± 12.02% and 208.51 ± 13.11%) compared with commercial tablets. The X-ray imaging showed a promising buoyancy ability for approximately 8 h. These findings revealed the successful preparation of the sustained-release floating tablet with improved dual drug delivery.
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Affiliation(s)
- Marwa Saady
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Nabil A Shoman
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ahram Canadian University, Giza, Egypt
| | - Mahmoud Teaima
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Rehab Abdelmonem
- Department of Industrial Pharmacy, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology (MUST), Giza, Egypt
| | - Mohamed A El-Nabarawi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Sammar Fathy Elhabal
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Modern University for Technology and Information (MTI), Mokattam, Cairo, Egypt
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2
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Li L, Yang M, Wei W, Zhao J, Yu X, Impaprasert R, Wang J, Liu J, Huang F, Srzednicki G, Yu L. Characteristics of Amorphophallus konjac as indicated by its genome. Sci Rep 2023; 13:22684. [PMID: 38114626 PMCID: PMC10730839 DOI: 10.1038/s41598-023-49963-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 12/14/2023] [Indexed: 12/21/2023] Open
Abstract
Amorphophallus konjac, belonging to the genus Amorphophallus of the Araceae family, is an economically important crop widely used in health products and biomaterials. In the present work, we performed the whole-genome assembly of A. konjac based on the NovaSeq platform sequence data. The final genome assembly was 4.58 Gb with a scaffold N50 of 3212 bp. The genome includes 39,421 protein-coding genes, and 71.75% of the assemblies were repetitive sequences. Comparative genomic analysis showed 1647 gene families have expanded and 2685 contracted in the A. konjac genome. Likewise, genome evolution analysis indicated that A. konjac underwent whole-genome duplication, possibly contributing to the expansion of certain gene families. Furthermore, we identified many candidate genes involved in the tuber formation and development, cellulose and lignification synthesis. The genome of A. konjac obtained in this work provides a valuable resource for the further study of the genetics, genomics, and breeding of this economically important crop, as well as for evolutionary studies of Araceae family.
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Affiliation(s)
- Lifang Li
- College of Agronomy, Yunnan Urban Agricultural Engineering and Technological Research Center, Kunming University, Kunming, China
| | - Min Yang
- College of Agronomy, Yunnan Urban Agricultural Engineering and Technological Research Center, Kunming University, Kunming, China
| | - Wei Wei
- College of Agronomy, Yunnan Urban Agricultural Engineering and Technological Research Center, Kunming University, Kunming, China
| | - Jianrong Zhao
- College of Agronomy, Yunnan Urban Agricultural Engineering and Technological Research Center, Kunming University, Kunming, China
| | - Xuya Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Rarisara Impaprasert
- Department of Microbiology, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - Jianguang Wang
- School of Life Sciences, Yunnan University, Kunming, China
| | - Jiani Liu
- College of Agronomy, Yunnan Urban Agricultural Engineering and Technological Research Center, Kunming University, Kunming, China
| | - Feiyan Huang
- College of Agronomy, Yunnan Urban Agricultural Engineering and Technological Research Center, Kunming University, Kunming, China
| | - George Srzednicki
- Food Science & Technology, School of Chemical Engineering, The University of New South Wales, Sydney, Australia.
| | - Lei Yu
- College of Agronomy, Yunnan Urban Agricultural Engineering and Technological Research Center, Kunming University, Kunming, China.
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3
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Shoman NA, Saady M, Teaima M, Abdelmonem R, El-Nabarawi MA, Elhabal SF. Merging konjac glucomannan with other copolymeric hydrogels as a cutting-edge liquid raft system for dual delivery of etoricoxib and famotidine. Drug Deliv 2023; 30:2189630. [PMID: 36927148 PMCID: PMC10184610 DOI: 10.1080/10717544.2023.2189630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 02/26/2023] [Indexed: 03/18/2023] Open
Abstract
This study aimed to formulate and evaluate a floating raft system for the co-delivery of etoricoxib (ETO) and famotidine (FAM) using a combination of glucomannan with natural/semi-synthetic polysaccharides. Formulation variables affect gelation lag time (GLT), floating lag time (FLT), and release percentage of drugs after 1-8 h, Stability, and viscosity parameters were evaluated. In vivo X-ray studies, followed by the pharmacokinetic study, were performed on human volunteers. Formulations exhibited pseudoplastic behavior for ease of swallowing. The optimum raft system (ORS) comprised 1% Na alginate, 0.1% Low Methoxyl (LM) pectin, 0.8% Konjac glucomannan (KGL), 1% Precirol, and 1% CaCO3. ORS exhibited rapid GLT and FLT (around 42 and 8 sec respectively) in 0.1 N HCl as well as controlled release of ETO (15% in 1 h and 82% in 8 h) and FAM (29% in 1 h and 85% in 8 h). Formulation stability with the absence of any drug-excipient interactions was observed. The X-ray imaging showed a promising buoyancy ability for approximately 8 h. Compared with marketed products, ORS showed superior relative bioavailability for both drugs. These findings revealed the successful preparation of a promising raft system with improved dual drug delivery.
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Affiliation(s)
- Nabil A. Shoman
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ahram Canadian University, Giza, Egypt
| | - Marwa Saady
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mahmoud Teaima
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Rehab Abdelmonem
- Department of Industrial Pharmacy, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology (MUST), Giza, Egypt
| | - Mohamed A. El-Nabarawi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Sammar Fathy Elhabal
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Modern University for Technology and Information (MTI), Mokattam, Cairo, Egypt
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Islam F, Labib RK, Zehravi M, Lami MS, Das R, Singh LP, Mandhadi JR, Balan P, Khan J, Khan SL, Nainu F, Nafady MH, Rab SO, Emran TB, Wilairatana P. Genus Amorphophallus: A Comprehensive Overview on Phytochemistry, Ethnomedicinal Uses, and Pharmacological Activities. PLANTS (BASEL, SWITZERLAND) 2023; 12:3945. [PMID: 38068582 PMCID: PMC10707911 DOI: 10.3390/plants12233945] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 07/01/2024]
Abstract
The genus Amorphophallus belongs to the family Araceae. Plants belonging to this genus are available worldwide and have been used in traditional medicines since ancient times, mainly in Ayurveda and Unani medical practices. Amorphophallus species are an abundant source of polyphenolic compounds; these are accountable for their pharmacological properties, such as their analgesic, neuroprotective, hepatoprotective, anti-inflammatory, anticonvulsant, antibacterial, antioxidant, anticancer, antiobesity, and immunomodulatory effects, as well as their ability to prevent gastrointestinal disturbance and reduce blood glucose. Moreover, Amorphophallus species contain numerous other classes of chemical compounds, such as alkaloids, steroids, fats and fixed oils, tannins, proteins, and carbohydrates, each of which contributes to the pharmacological effects for the treatment of acute rheumatism, tumors, lung swelling, asthma, vomiting, abdominal pain, and so on. Additionally, Amorphophallus species have been employed in numerous herbal formulations and pharmaceutical applications. There has been no extensive review conducted on the Amorphophallus genus as of yet, despite the fact that several experimental studies are being published regularly discussing these plants' pharmacological properties. So, this review discusses in detail the pharmacological properties of Amorphophallus species. We also discuss phytochemical constituents in the Amorphophallus species and their ethnomedicinal uses and toxicological profiles.
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Affiliation(s)
- Fahadul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh; (F.I.); (T.B.E.)
| | - Rafiuddin Khan Labib
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Mehrukh Zehravi
- Department of Clinical Pharmacy, College of Dentistry & Pharmacy, Buraydah Private Colleges, Buraydah 51418, Saudi Arabia
| | - Mashia Subha Lami
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Rajib Das
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Laliteshwar Pratap Singh
- Department of Pharmaceutical Chemistry, Narayan Institute of Pharmacy, Gopal Narayan Singh University, Sasaram 821305, India
| | - Jithendar Reddy Mandhadi
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Assam Down Town University (AdtU), Gandhinagar 781026, India
| | - P. Balan
- Department of Pharmaceutical Chemistry, The Erode College of Pharmacy, Erode 638112, India
| | - Jishan Khan
- Department of Pharmacy, International Islamic University Chittagong, Kumira, Chittagong 4318, Bangladesh
| | - Sharuk L. Khan
- Department of Pharmaceutical Chemistry, N.B.S. Institute of Pharmacy, Ausa 413520, India
| | - Firzan Nainu
- Department of Pharmacy, Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Mohamed H. Nafady
- Faculty of Applied Health Science Technology, Misr University for Science and Technology, Giza 12568, Egypt
| | - Safia Obaidur Rab
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia
| | - Talha Bin Emran
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh; (F.I.); (T.B.E.)
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown University, Providence, RI 02912, USA
- Legorreta Cancer Center, Brown University, Providence, RI 02912, USA
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
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5
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Sonthithaveelap S, Impaprasert R, Suntornsuk W, Srzednicki G. Modification of Konjac Biodegradable Material Using Deacetylation and Reinforcement Process for Its Applications in Food Packaging. INTERNATIONAL JOURNAL OF FOOD SCIENCE 2023; 2023:5559783. [PMID: 37767027 PMCID: PMC10522431 DOI: 10.1155/2023/5559783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 07/11/2023] [Accepted: 08/19/2023] [Indexed: 09/29/2023]
Abstract
Common konjac flour, especially of low grade, is a waste material produced in large quantities during purification of konjac glucomannan (KGM). It contains impurities, particularly oxalate salts, which irritate and may cause kidney stones. Konjac flour has glucomannan as a main component. Glucomannan is characterized by low crystallinity, high thermostability, and the ability to form a strong gel. Subsequently, glucomannan has good potential for the production of biodegradable material. However, its high-water affinity limits its use in packaging. The deacetylated by thermal forming process and reinforced konjac flour with 15% and 20% of microcrystalline cellulose showed improved water absorption and thermal properties of the specimen. Moreover, the thermal forming process resulted in the reduction of soluble oxalate. Therefore, due to the conditions used in this experiment, the material will be stronger, more waterproof properties, and more highly resistant to temperatures, so it is suitable to be used as a packaging that is environmentally friendly.
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Affiliation(s)
- Supaphada Sonthithaveelap
- Department of Microbiology, Faculty of Science, King Mongkut's University of Technology Thonburi, 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, Thailand
| | - Rarisara Impaprasert
- Department of Microbiology, Faculty of Science, King Mongkut's University of Technology Thonburi, 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, Thailand
| | - Worapot Suntornsuk
- Department of Microbiology, Faculty of Science, King Mongkut's University of Technology Thonburi, 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok 10140, Thailand
| | - George Srzednicki
- Food Science & Technology, School of Chemical Engineering, The University of New South Wales, Sydney NSW 2052, Australia
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6
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Duan Z, Wang Y, Yu X, Wu N, Pang J, Bai Y. Effect of konjac oligo-glucomannan on emulsifying properties of myofibrillar protein. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023. [PMID: 37005375 DOI: 10.1002/jsfa.12596] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 03/29/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND The high viscosity of konjac glumannan (KGM) limits its application in meat processing. In this work, the effects of konjac oligo-glucomannan (KOG), as a derivative of KGM, on the emulsifying properties of myofibrillar protein (MP) and the related mechanism were investigated. RESULTS It was found that the addition of KOG had no significant effect on the secondary structure of MP, but altered the tertiary conformation of MP, resulting in exposure of tyrosine residues to polar microenvironments and decreased intrinsic fluorescence intensity. In addition, the addition of KOG increased the emulsifying activity of MP, resulting in decreased particle size and improved physical stability of the emulsion. The emulsifying activity of MP reached the maximum value when 1.0 wt% KOG was added. Moreover, the interfacial tension and interfacially adsorbed protein content of MP/KOG emulsions decreased with the increase in KOG concentration. CONCLUSION These findings demonstrated that KOG mainly interacted with MP and changed the amphipathy of the KOG-MP at the oil-water interface, forming a stable interface film to improve the emulsifying properties of MP. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Ziqiang Duan
- Henan Collaborative Innovation Center for Food Production and Safety, College of Food and Bioengineering, Zhengzhou University of Light Industry, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou, China
| | - Yuntao Wang
- Henan Collaborative Innovation Center for Food Production and Safety, College of Food and Bioengineering, Zhengzhou University of Light Industry, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou, China
| | - Xiao Yu
- Henan Collaborative Innovation Center for Food Production and Safety, College of Food and Bioengineering, Zhengzhou University of Light Industry, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou, China
| | - Nan Wu
- Henan Collaborative Innovation Center for Food Production and Safety, College of Food and Bioengineering, Zhengzhou University of Light Industry, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou, China
| | - Jie Pang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yanhong Bai
- Henan Collaborative Innovation Center for Food Production and Safety, College of Food and Bioengineering, Zhengzhou University of Light Industry, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou, China
- Food Laboratory of Zhongyuan, Zhengzhou University of Light Industry, Luohe, China
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7
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Zhang M, Gu L, Chang C, Li J, Sun Y, Cai Y, Xiong W, Yang Y, Su Y. Evaluation of the composition of konjac glucomannan on the color changes during the deacetylation reaction. Int J Biol Macromol 2023; 228:242-250. [PMID: 36563814 DOI: 10.1016/j.ijbiomac.2022.12.156] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 11/03/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
As a newly superior konjac variety, the Amorphophallus bulbifer (A. bulbifer) has several unique advantages of high reproductive coefficient, short growth cycle, high disease resistance, high konjac glucomannan (KGM) content and climate adaption to hot or humid conditions. However, the gel formed by KGM from the A. bulbifer flour is easily browning during the alkali-induced process and the mechanism underlying them is still unclear. In order to explore the browning mechanisms, the changes of composition and color parameters of KGM were investigated during deacetylation in this research. The L*, h*, total phenols, total flavonoids, reducing sugars, and amino acids decreased along with the increase of deacetylation degree of KGM while a*, ΔЕ, and browning index increased. The results indicated that the oxidation or polymerization of polyphenols and flavones in alkaline circumstances, and the carbonyl ammonia reaction between reducing sugars and amino acids may be the main reasons for color changes of KGM flour during deacetylation. Hence, this study was expected to provide the theoretical basis for the inhibition of KGM gel browning and further broaden the application range of KGM in food and other industries.
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Affiliation(s)
- Mianzhang Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Luping Gu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Cuihua Chang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Junhua Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yuanyuan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yundan Cai
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wen Xiong
- Hunan Engineering & Technology Research Center for Food Flavors and Flavorings, Jinshi, Hunan 415400, China
| | - Yanjun Yang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yujie Su
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
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8
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Tian L, Zhang S, Yi J, Zhu Z, Decker EA, McClements DJ. The impact of konjac glucomannan on the physical and chemical stability of walnut oil-in-water emulsions coated by whey proteins. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:4003-4011. [PMID: 34997575 DOI: 10.1002/jsfa.11748] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/07/2021] [Accepted: 01/08/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Walnut oil, which is rich in polyunsaturated fatty acids (PUFAs), can be incorporated into food emulsions to increase their nutritional value. However, these emulsions are highly susceptible to deterioration during storage due to lipid oxidation. Konjac glucomannan (KGM) is a neutral plant polysaccharide used as a stabilizer, thickener or gelling agent in foods. The goal of this study was to incorporate KGM into oil-in-water emulsions containing walnut oil droplets coated by whey protein isolate (WPI) and then determine its effects on their physical and oxidative stability. RESULTS At pH 3, inclusion of KGM (0.1-1 g kg-1 ) reduced the positive surface potential on the droplets in the emulsions and modified the secondary structure of the adsorbed whey proteins, suggesting an interaction between KGM and WPI at the droplet surfaces. The physical stability of the emulsions was enhanced when 0.1-0.6 g kg-1 KGM was added but reduced at higher levels. Lipid oxidation was inhibited in the emulsions in a dose-dependent manner when 0.2-0.6 g kg-1 KGM was added but protein oxidation was promoted at higher KGM levels. The steric hindrance provided by the thick WPI-KGM interfaces, as well as the ability of the polysaccharides to modify the antioxidant properties of the adsorbed proteins, may account for these effects. CONCLUSION These results suggest that KGM can be used to inhibit lipid oxidation in emulsified foods containing protein-coated oil droplets. However, its level must be optimized because higher doses can result in droplet aggregation and protein oxidation. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Li Tian
- College of Biology and Food Engineering, Anyang Institute of Technology, An yang, China
- College of Biological and Food Engineering, Huanghuai University, Zhumadian, China
| | - Shulin Zhang
- College of Biology and Food Engineering, Anyang Institute of Technology, An yang, China
- College of Biological and Food Engineering, Huanghuai University, Zhumadian, China
| | - Jianhua Yi
- College of Biological and Food Engineering, Huanghuai University, Zhumadian, China
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
| | - Zhenbao Zhu
- College of Biological and Food Engineering, Huanghuai University, Zhumadian, China
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
| | - Eric Andrew Decker
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
- Department of Food Science, University of Massachusetts, Amherst, MA, USA
| | - David Julian McClements
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
- Department of Food Science, University of Massachusetts, Amherst, MA, USA
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9
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Guo L, Yokoyama W, Chen L, Liu F, Chen M, Zhong F. Characterization and physicochemical properties analysis of konjac glucomannan: Implications for structure-properties relationships. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106818] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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10
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Weng G, Duan Y, Zhong Y, Song B, Zheng J, Zhang S, Yin Y, Deng J. Plant Extracts in Obesity: A Role of Gut Microbiota. Front Nutr 2021; 8:727951. [PMID: 34631766 PMCID: PMC8495072 DOI: 10.3389/fnut.2021.727951] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/10/2021] [Indexed: 12/12/2022] Open
Abstract
Obesity has become one of the most serious chronic diseases threatening human health. Its occurrence and development are closely associated with gut microbiota since the disorders of gut microbiota can promote endotoxin production and induce inflammatory response. Recently, numerous plant extracts have been proven to mitigate lipid dysmetabolism and obesity syndrome by regulating the abundance and composition of gut microbiota. In this review, we summarize the potential roles of different plant extracts including mulberry leaf extract, policosanol, cortex moutan, green tea, honokiol, and capsaicin in regulating obesity via gut microbiota. Based on the current findings, plant extracts may be promising agents for the prevention and treatment of obesity and its related metabolic diseases, and the mechanisms might be associated with gut microbiota.
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Affiliation(s)
- Guangying Weng
- Guangdong Provincial Key Laboratory of Animal Nutrition Regulation, South China Agricultural University, Guangzhou, China.,CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Yehui Duan
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Yinzhao Zhong
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Bo Song
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jie Zheng
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Shiyu Zhang
- CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yulong Yin
- Guangdong Provincial Key Laboratory of Animal Nutrition Regulation, South China Agricultural University, Guangzhou, China.,CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region, Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Jinping Deng
- Guangdong Provincial Key Laboratory of Animal Nutrition Regulation, South China Agricultural University, Guangzhou, China
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11
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Laignier F, Akutsu RDCCDA, Maldonade IR, Bertoldo Pacheco MT, Silva VSN, Mendonça MA, Zandonadi RP, Raposo A, Botelho RBA. Amorphophallus konjac: A Novel Alternative Flour on Gluten-Free Bread. Foods 2021; 10:foods10061206. [PMID: 34071793 PMCID: PMC8229984 DOI: 10.3390/foods10061206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 01/02/2023] Open
Abstract
The demand for gluten-free products is rising, but their production with similar quality as their gluten counterparts is challenging. This study aimed to develop gluten-free bread samples using different concentrations of Amorphophallus konjac flour (0%, 12.5%, 25%, 37.5%, and 50% of the total flour content) and to evaluate their nutritional and physicochemical properties. Proteins, lipids, carbohydrates, moisture, ash content, fibers, resistant starch, firmness, specific volume, and color were evaluated using official methods. Protein varied from 2.95% to 4.94%, the energy value from 347.93 to 133.55 kcal/100 g, dietary fiber from 8.19 to 17.90%, and resistant starch from 0.67% to 0.75% on wet basis. The addition of konjac flour positively influenced the specific volume. Higher concentrations of konjac flour in the formulations led to lower calories of the bread due to the significant addition of water to the dough. The bread samples with konjac showed high fiber content due to the composition of the flour. They had lower levels of carbohydrates, which can positively influence the glycemic index. Konjac flour provided dough mold, growth, and better texture for gluten-free bread. The best formulations were prepared in concentrations up to 37.5% konjac. The 50% konjac bread showed slightly reduced specific volume and pale color.
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Affiliation(s)
- Fernanda Laignier
- Department of Nutrition, College of Health Sciences, University of Brasília, Brasília 70910900, Brazil; (F.L.); (R.d.C.C.d.A.A.); (R.P.Z.)
| | | | | | | | | | - Marcio Antônio Mendonça
- College of Agronomy and Veterinary Medicine, University of Brasília, Brasília 70910900, Brazil;
| | - Renata Puppin Zandonadi
- Department of Nutrition, College of Health Sciences, University of Brasília, Brasília 70910900, Brazil; (F.L.); (R.d.C.C.d.A.A.); (R.P.Z.)
| | - António Raposo
- CBIOS (Research Center for Biosciences and Health Technologies), Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, 1749-024 Lisboa, Portugal
- Correspondence: (A.R.); (R.B.A.B.); Tel.: +55-61-981378620 (R.B.A.B.)
| | - Raquel Braz Assunção Botelho
- Department of Nutrition, College of Health Sciences, University of Brasília, Brasília 70910900, Brazil; (F.L.); (R.d.C.C.d.A.A.); (R.P.Z.)
- Correspondence: (A.R.); (R.B.A.B.); Tel.: +55-61-981378620 (R.B.A.B.)
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Adetunji CO, Akram M, Michael OS, Shahzad K, Ayeni AE, Hasan S, Adetunji JB, Hasan SM, Inamuddin, Olaniyan M, Muhibi MA. Polysaccharides Derived From Natural Sources: A Panacea to Health and Nutritional Challenges. POLYSACCHARIDES 2021. [DOI: 10.1002/9781119711414.ch32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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13
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Verhertbruggen Y, Bouder A, Vigouroux J, Alvarado C, Geairon A, Guillon F, Wilkinson MD, Stritt F, Pauly M, Lee MY, Mortimer JC, Scheller HV, Mitchell RAC, Voiniciuc C, Saulnier L, Chateigner-Boutin AL. The TaCslA12 gene expressed in the wheat grain endosperm synthesizes wheat-like mannan when expressed in yeast and Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 302:110693. [PMID: 33288007 DOI: 10.1016/j.plantsci.2020.110693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/24/2020] [Accepted: 09/26/2020] [Indexed: 06/12/2023]
Abstract
Mannan is a class of cell wall polysaccharides widespread in the plant kingdom. Mannan structure and properties vary according to species and organ. The cell walls of cereal grains have been extensively studied due to their role in cereal processing and to their beneficial effect on human health as dietary fiber. Recently, we showed that mannan in wheat (Triticum aestivum) grain endosperm has a linear structure of β-1,4-linked mannose residues. The aim of this work was to study the biosynthesis and function of wheat grain mannan. We showed that mannan is deposited in the endosperm early during grain development, and we identified candidate mannan biosynthetic genes expressed in the endosperm. The functional study in wheat was unsuccessful therefore our best candidate genes were expressed in heterologous systems. The endosperm-specificTaCslA12 gene expressed in Pichia pastoris and in an Arabidopsis thaliana mutant depleted in glucomannan led to the production of wheat-like linear mannan lacking glucose residues and with moderate acetylation. Therefore, this gene encodes a mannan synthase and is likely responsible for the synthesis of wheat endosperm mannan.
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Affiliation(s)
| | | | | | | | | | | | - Mark D Wilkinson
- Rothamsted Research, West Common, Harpenden, Hertfordshire AL5 2JK, UK
| | - Fabian Stritt
- Institute for Plant Cell Biology and Biotechnology, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Markus Pauly
- Institute for Plant Cell Biology and Biotechnology, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Mi Yeon Lee
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jenny C Mortimer
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Henrik V Scheller
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA
| | | | - Cătălin Voiniciuc
- Institute for Plant Cell Biology and Biotechnology, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany; Independent Junior Research Group-Designer Glycans, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
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Zhou Y, Qin J, Wang Y, Wang Y, Cheng Y. Gastrointestinal and metabolic effects of noodles-based konjac glucomannan in rats. Food Nutr Res 2019; 63:1997. [PMID: 31903092 PMCID: PMC6925537 DOI: 10.29219/fnr.v63.1997] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 08/15/2019] [Accepted: 08/26/2019] [Indexed: 12/25/2022] Open
Abstract
This study was conducted to investigate the hypothesis that the beneficial metabolic effects of dietary fiber, konjac glucomannan (KGM), related with in vivo digestion might be altered if the complicated food matrix was taken into consideration. A diet of precooked noodles (PN), as widely produced and consumed in Asia, was used to simulate an actual food context. Assays were conducted with male Wistar rats (n = 80); the rats were divided into five groups and fed with either PN (control), PN supplemented with medium-dose KGM (MK), precooked low-dose KGM-supplemented noodles (LKD), precooked medium-dose KGM-supplemented noodles (MKD) or precooked high-dose KGM supplemented noodles (HKD). The time-dependent changes in blood glucose and the sensitivity to insulin after intragastric administration were determined to evaluate the postprandial glycemic response. The activity of intestinal Na+-K+-ATPase and the levels of gut hormones including motilin, cholecystokin, GLP-1, and orexin were also determined to provide insights into the function of gastrointestinal motion and after-meal hormonal feedback in each group. The noodles-based KGM showed much more efficacy in sustaining glucose homeostasis compared with KGM supplemented in a diet of noodles, indicating there might be potential long-term health outcomes of satiety and energy balance using noodles-based KGM. The postprandial glycemia was largely moderated by LKD and MKD. Despite the significant reduction in the production of glucose, MKD caused insensitivity to insulin-blood glucose regulation and a rapid gut negative feedback following a severe blood glucose fluctuation. In conclusion, the health-promoting benefits of KGM supplements on glycemic response highly depend on the type of matrix and the dose of KGM.
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Affiliation(s)
- Yun Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- College of Food Science, Southwest University, Chongqing, People’s Republic of China
| | - Jiangdan Qin
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yongquan Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yichen Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yongqiang Cheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
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Wu D, Tu M, Wang Z, Wu C, Yu C, Battino M, El-Seedi HR, Du M. Biological and conventional food processing modifications on food proteins: Structure, functionality, and bioactivity. Biotechnol Adv 2019; 40:107491. [PMID: 31756373 DOI: 10.1016/j.biotechadv.2019.107491] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/07/2019] [Accepted: 11/18/2019] [Indexed: 12/23/2022]
Abstract
Food proteins are important nutrients for human health and thus make significant contributions to the unique functions of different foods. The modification of proteins through physical and biological processing could improve the functional and nutritional properties of food products; these changes can be attributed to modifications in particle size, solubility, emulsion stability, secondary structure, as well as the bioactivities of the proteins. Physical processing treatments might promote physical phenomena, such as combined friction, collision, shear forces, turbulence, and cavitation of particles, and lead to changes in the particle sizes of proteins. The objective of this review is to illustrate the effect of physical and biological processing on the structure, and physical and chemical properties of food-derived proteins and provide insights into the mechanism underlying structural changes. Many studies have suggested that physical and biological processes, such as ultrasound treatment, high pressure homogenization, ball mill treatment, and enzymatic hydrolysis could affect the structure, physical properties, and chemical properties of food-derived proteins. Some important applications of food-derived proteins are also discussed based on the relationships between their physical, chemical, and functional properties. Perspectives from fundamental or practical research are also brought in to provide a complete picture of the currently available relevant data.
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Affiliation(s)
- Di Wu
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, China
| | - Maolin Tu
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, China
| | - Zhenyu Wang
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, China
| | - Chao Wu
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, China
| | - Cuiping Yu
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, China
| | - Maurizio Battino
- Nutrition and Food Science Group, Department of Analytical and Food Chemistry, CITACA, CACTI, University of Vigo, Vigo Campus, Vigo, Spain
| | - Hesham R El-Seedi
- Division of Pharmacognosy, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre, Uppsala, Sweden
| | - Ming Du
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, China.
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Kang Y, Li Y, Du Y, Guo L, Chen M, Huang X, Yang F, Hong J, Kong X. Konjaku flour reduces obesity in mice by modulating the composition of the gut microbiota. Int J Obes (Lond) 2019; 43:1631-1643. [PMID: 30242233 DOI: 10.1038/s41366-018-0187-x] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/23/2018] [Accepted: 07/02/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Changes in the intestinal flora composition is referred to as dysbiosis, which is related to obesity development, thus supporting the potential roles of nutrients acting on intestinal flora to exert salutary effects on energetic metabolism of host. Dietary fiber has been known to affect the composition of intestinal flora. The aim of the present study was to investigate the functional effects of konjac flour (KF) on obesity control in respect to improving inflammation, metabolism, and intestinal barrier function, and the possible association of the effects with intestinal flora composition changes. METHODS Mice (n = 30) were randomly divided into control group (n = 10), high-fat-diet (HFD) group (n = 10), and KF intervention group (n = 10), followed by feeding for 12 weeks and with adding a KF daily supplementation for the treatment group. Body weight, fat accumulation, inflammation, and energetic metabolism markers in multiple tissues and the gut microbiota of the mice were examined at the end of the experiment. RESULTS The KF supplementation significantly reduced the gains in weight, fat mass, as well as adipocyte size of HFD mice and lowered the serum TC, leptin (LEP), thiobarbituric acid-reacting substance (TBARS), IL-6, and lipopolysaccharide (LPS) levels in HFD mice. KF also upregulated the expression of intestinal mucosa protein gene Intection and tight junction ZO-1 in HFD mice, as well as upregulate the expression of energy metabolism genes PPARα and CPT-1 as well as the fat metabolism gene HLS in livers and fat tissues, and downregulate that of fat synthesis gene PPARγ (p < 0.05). The KF treatment increases the α-diversity and change the β-diversity of the intestinal microflora in HFD mice and boosted the abundances of some obesity-related beneficial microorganisms (such as Megasphaera elsdenii) in the intestinal microflora of HFD mice, while reduced those of harmful microorganisms (such as Alistipes, Alloprevotella, Bacteroides acidifaciens, and Parabacteroides goldsteinii). The abundance of Alistipes was positively correlated with weight, fat mass, serum TC, TG, LEP, IL-6, and LPS contents as well as PPARγ gene expression; while notably and negatively related to the expression of CPT-1 and HLS genes (p < 0.01). KF remarkably increased the abundance of Aerococcaceae, while reduced that of Alistipes finegoldii (p < 0.01). CONCLUSIONS Supplementation with KF achieves favorable effects on treating obesity, improving inflammatory response, metabolism, and intestinal barrier function, by regulating intestinal microfloral structure in HFD-fed mice.
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Affiliation(s)
- Yongbo Kang
- Medical Faculty, Kunming University of Science and Technology, Kunming, Yunnan, China
- Genetics and Pharmacogenomics Laboratory, Kunming University of Science and Technology, Kunming, Yunnan, China
- School of Basic Medical Sciences, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yu Li
- Medical Faculty, Kunming University of Science and Technology, Kunming, Yunnan, China
- Genetics and Pharmacogenomics Laboratory, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Yuhui Du
- Medical Faculty, Kunming University of Science and Technology, Kunming, Yunnan, China
- Genetics and Pharmacogenomics Laboratory, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Liqiong Guo
- Medical Faculty, Kunming University of Science and Technology, Kunming, Yunnan, China
- Genetics and Pharmacogenomics Laboratory, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Minghui Chen
- Medical Faculty, Kunming University of Science and Technology, Kunming, Yunnan, China
- Genetics and Pharmacogenomics Laboratory, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Xinwei Huang
- Medical Faculty, Kunming University of Science and Technology, Kunming, Yunnan, China
- Genetics and Pharmacogenomics Laboratory, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Fang Yang
- Nutrition Department, The First People's Hospital of Yunnan Province, Kunming, Yunnan, China
| | - Jingan Hong
- Nutrition Department, The First People's Hospital of Yunnan Province, Kunming, Yunnan, China
| | - Xiangyang Kong
- Medical Faculty, Kunming University of Science and Technology, Kunming, Yunnan, China.
- Genetics and Pharmacogenomics Laboratory, Kunming University of Science and Technology, Kunming, Yunnan, China.
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Shi XD, Yin JY, Zhang LJ, Huang XJ, Nie SP. Studies on O-acetyl-glucomannans from Amorphophallus species: Comparison of physicochemical properties and primary structures. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.11.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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18
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Devaraj RD, Reddy CK, Xu B. Health-promoting effects of konjac glucomannan and its practical applications: A critical review. Int J Biol Macromol 2018; 126:273-281. [PMID: 30586587 DOI: 10.1016/j.ijbiomac.2018.12.203] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 12/11/2018] [Accepted: 12/21/2018] [Indexed: 11/25/2022]
Abstract
Konjac glucomannan (KGM) is a dietary fiber hydrocolloidal polysaccharide isolated from the tubers of Amorphophallus konjac. Over the last few decades, the purified KGM has been offered as a food additive as well as a dietary supplement in many countries. Also, a diet containing konjac flour or KGM is considered as healthier, and these foods are popular in many Asian and European markets. Further, due to the adhesive property of KGM, it can form a defensive covering on the surface of the intestine. Additionally, KGM can reduce the levels of glucose, cholesterol, triglycerides, and blood pressure and can enable weight loss. Its wide-ranging effects prevent many chronic diseases through the regulation of metabolism. In this review, the recent studies on the health benefits such as anti-diabetic, anti-obesity, laxative, prebiotic, and anti-inflammatory activities of KGM were discussed. Also, this review deals with the applications of KGM and its derivatives in bio-technical, pharmaceutical, tissue engineering, fine chemical fields, etc.
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Affiliation(s)
- Ramya Devi Devaraj
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China
| | - Chagam Koteswara Reddy
- Department of Food Science and Technology, Pondicherry University, Puducherry 605014, India
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519087, China.
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Kumoro A, Yuganta T, Retnowati D, Ratnawati R. Acid Hydrolysis and Ethanol Precipitation for Glucomannan Extraction from Crude Porang (Amorphophallus Oncophyllus) Tuber Flour. CHEMISTRY & CHEMICAL TECHNOLOGY 2018. [DOI: 10.23939/chcht12.01.101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Wang SQ, Huang GQ, Du YL, Xiao JX. Modification of Konjac Glucomannan by Reduced-Pressure Radio-Frequency Air Plasma. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2017. [DOI: 10.1515/ijfe-2016-0377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe potential of reduced-pressure radio-frequency air plasma (RFAP) in the modification of konjac glucomannan (KGM) was investigated. KGM film was exposed to 100 W RFAP for 50 s, 100 s, 150 s, 200 s, and 250 s, ground, and then subjected to various characterizations. Fourier Transform Infrared Spectroscopy (FTIR) revealed that RFAP treatment increased the content of –OH groups in KGM, with the lowest and highest rise occurring at the exposure durations 150 s and 250 s, respectively. RFAP radiation decreased the solubility of KGM at certain exposure durations, but slightly increased its thermal stability. Exposure to RFAP for 150 s and 250 s increased the hardness of the resultant KGM gel, but decreased the viscosity and elasticity of the KGM solution in a duration-dependent manner. Scanning Electron Microscope (SEM) observation revealed that RFAP treatment led to rougher surfaces and XRD (X-Ray Diffraction) analysis indicated the destroyed crystallinity of KGM. Hence, RFAP has potential application in the modification of KGM.
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Chen X, Yuan LQ, Li LJ, Lv Y, Chen PF, Pan L. Suppression of gastric cancer by extract from the tuber of amorphophallus konjac via induction of apoptosis and autophagy. Oncol Rep 2017; 38:1051-1058. [DOI: 10.3892/or.2017.5747] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 06/08/2017] [Indexed: 11/05/2022] Open
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Gómez B, Míguez B, Yáñez R, Alonso JL. Manufacture and Properties of Glucomannans and Glucomannooligosaccharides Derived from Konjac and Other Sources. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:2019-2031. [PMID: 28248105 DOI: 10.1021/acs.jafc.6b05409] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Glucomannans (GM) are polymers that can be found in natural resources, such as tubers, bulbs, roots, and both hard- and softwoods. In fact, mannan-based polysaccharides represent the largest hemicellulose fraction in softwoods. In addition to their structural functions and their role as energy reserve, they have been assessed for their healthy applications, including their role as new source of prebiotics. This paper summarizes the scientific literature regarding the manufacture and functional properties of GM and their hydrolysis products with a special focus on their prebiotic activity.
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Affiliation(s)
- Belén Gómez
- Chemical Engineering Department, Polytechnic Building, University of Vigo (Campus Ourense) , 32004 Ourense, Spain
- CITI , Avenida Galicia 2, Tecnopole, San Cibrao das Viñas, 32900 Ourense, Spain
- CINBIO , University Campus, 36310 Vigo, Pontevedra, Spain
| | - Beatriz Míguez
- Chemical Engineering Department, Polytechnic Building, University of Vigo (Campus Ourense) , 32004 Ourense, Spain
- CITI , Avenida Galicia 2, Tecnopole, San Cibrao das Viñas, 32900 Ourense, Spain
- CINBIO , University Campus, 36310 Vigo, Pontevedra, Spain
| | - Remedios Yáñez
- Chemical Engineering Department, Polytechnic Building, University of Vigo (Campus Ourense) , 32004 Ourense, Spain
- CITI , Avenida Galicia 2, Tecnopole, San Cibrao das Viñas, 32900 Ourense, Spain
- CINBIO , University Campus, 36310 Vigo, Pontevedra, Spain
| | - José L Alonso
- Chemical Engineering Department, Polytechnic Building, University of Vigo (Campus Ourense) , 32004 Ourense, Spain
- CITI , Avenida Galicia 2, Tecnopole, San Cibrao das Viñas, 32900 Ourense, Spain
- CINBIO , University Campus, 36310 Vigo, Pontevedra, Spain
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Liu B, Wang H, Hu T, Zhang P, Zhang Z, Pan S, Hu H. Ball-milling changed the physicochemical properties of SPI and its cold-set gels. J FOOD ENG 2017. [DOI: 10.1016/j.jfoodeng.2016.10.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Inclusion of Konjac Flour in the Gestation Diet Changes the Gut Microbiota, Alleviates Oxidative Stress, and Improves Insulin Sensitivity in Sows. Appl Environ Microbiol 2016; 82:5899-909. [PMID: 27474722 DOI: 10.1128/aem.01374-16] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 07/13/2016] [Indexed: 01/08/2023] Open
Abstract
UNLABELLED Although dietary fibers contribute to health and physiology primarily via the fermentative actions of the gut microbiota of the hosts, few studies have focused on how these interactions influence the metabolic status of sows. Here, the effects of inclusion of konjac flour (KF) in a gestation diet on oxidative stress status, insulin sensitivity, and gut microbiota were investigated to elucidate the correlation between the microbiota and metabolic changes in sows. Sows were assigned to either control or 2.2% KF dietary treatment during gestation. The gut microbiota population in sows during gestation and lactation was assessed by 16S rRNA gene sequencing. The oxidative stress parameters, homeostasis model assessment (HOMA) values, and fatty acids in the blood of sows were also assessed. Compared to the control diet group, KF significantly reduced the serum levels of reactive oxygen species (ROS) and 8-hydroxy-deoxyguanosine (8-OHdG) but increased the serum concentrations of glutathione peroxidase (GSH-Px) in sows on day 1 in lactation. Additionally, sows in the KF group had a lower HOMA insulin resistance value but a higher HOMA insulin sensitivity (HOMA-IS) value. KF induced changes in the gut microbial composition at the phylum and genus levels. The increased relative abundances of Akkermansia and Roseburia in the KF group were positively correlated with the HOMA-IS. Overall, dietary KF alleviated oxidative stress and improved insulin sensitivity of sows, and the changes in the gut microbiota in response to KF may have been correlated with the host metabolism response. IMPORTANCE To date, the effect of dietary fiber on metabolism responses and gut microbiota in sows has not been investigated. Here, KF supplementation of a gestation diet in sows was found to alleviate oxidative stress and to improve insulin sensitivity. Pyrosequencing analysis revealed that KF treatment induces changes in the gut microbiota composition at the phylum and genus levels. Moreover, the changes of gut microbiota in response to KF may be correlated with the host metabolism response.
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25
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Behera SS, Ray RC. Konjac glucomannan, a promising polysaccharide of Amorphophallus konjac K. Koch in health care. Int J Biol Macromol 2016; 92:942-956. [PMID: 27481345 DOI: 10.1016/j.ijbiomac.2016.07.098] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 07/25/2016] [Accepted: 07/28/2016] [Indexed: 01/09/2023]
Abstract
In recent year, konjac glucomannan (KGM) has attracted more attention due to its non-harmful and non-toxic properties, good biocompatibility, biodegradability and hydrophilic ability. Moreover, KGM and their derivatives have several importances in the multidirectional research areas such as nutritional, biotechnological and fine chemical fields. In the previous article, we have reviewed the nutritional aspects of KGM covering the various aspects of functional foods, food additives and their derivatives. This review aims at highlighting the diverse biomedical research conducted on KGM in the past ten years, covering therapies for anti-obesity, regulation in lipid metabolism, laxative effect, anti-diabetic, anti-inflammatory, prebiotic to wound dressing applications. Moreover, this review deals with global health aspects of KGM and the disparate health related factors associated with diseases and their control measures.
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Affiliation(s)
- Sudhanshu S Behera
- Department of Fisheries and Animal Resource Development, Government of Odisha, India.
| | - Ramesh C Ray
- ICAR-Central Tuber Crops Research Institute (Regional Centre), Bhubaneswar 751 019, India
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Dai S, Corke H, Shah NP. Utilization of konjac glucomannan as a fat replacer in low-fat and skimmed yogurt. J Dairy Sci 2016; 99:7063-7074. [PMID: 27372590 DOI: 10.3168/jds.2016-11131] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 05/24/2016] [Indexed: 11/19/2022]
Abstract
Konjac glucomannan (KGM) has been reported to be beneficial to human health, as well as having potential functional properties as a fat replacer in dairy products. In this study, 0.5% KGM solution was added to prepare low-fat (LFKGM) and skimmed (SKKGM) yogurts, and their physicochemical properties were compared with those of full-fat yogurt control (FFC), low-fat yogurt control (LFC), and skimmed yogurt control (SKC). Properties and composition were determined and the microscopic structures of all yogurts were observed during storage at 4°C for 21d. Generally, addition of KGM to yogurts had no significant effect on composition, pH, and titratable acidity at each storage day. The LFKGM and SKKGM had higher whiteness, greenness, and yellowness hues compared with those of the LFC and SKC. The proteolysis of LFKGM and SKKGM was similar to that of FFC, whereas it was lower than in LFC and SKC after 14d of storage. Addition of KGM had no positive effects on the water-holding capacity, but led to a decrease in syneresis and spontaneous whey separation in LFKGM and SKKGM compared with those of LFC and SKC. The spontaneous whey separation of LFKGM was similar to that of FFC. Presence of KGM in skimmed yogurt affected textural characteristics, while having little effect on texture of low-fat yogurt. Additionally, LFKGM and SKKGM showed stronger and more stable gel structures than those of FFC, LFC, and SKC. Overall, no substantial changes were found in the characteristics for each yogurt during storage, except for pH and gel structures. Results indicated that KGM may be a good fat replacer to develop reduced-fat yogurts with desired characteristics.
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Affiliation(s)
- Shuhong Dai
- Food and Nutritional Sciences, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Pokfulam 0000
| | - Harold Corke
- Food and Nutritional Sciences, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Pokfulam 0000; Department of Food Science and Technology, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Nagendra P Shah
- Food and Nutritional Sciences, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, Pokfulam 0000.
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Effects of konjac flour inclusion in gestation diets on the nutrient digestibility, lactation feed intake and reproductive performance of sows. Animal 2016; 8:1089-94. [PMID: 26263027 DOI: 10.1017/s175173111400113x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This study was conducted to investigate the effects of konjac flour (KF) inclusion in gestation diets of sows on nutrients digestibility, lactation feed intake, reproductive performance of sows and preweaning performance of piglets. Two isoenergetic and isonitrogenous gestation diets were formulated: a control diet and a 2.1% KF-supplemented diet (KF diet). Both diets had the same NDF and insoluble fiber (ISF) levels, but the KF diet had higher soluble fiber (SF) level. The day after breeding, 96 multiparous sows were assigned to the two dietary treatments. Restrict-fed during gestation, in contrast, all sows were offered the same lactation diet ad libitum. Response criteria included sow BW, backfat depth, lactation feed intake, weaning-to-estrus interval, litter size and piglet's weight at parturition and day 21 of lactation. On day 60 of gestation, 20 sows were used to measure nutrient digestibility. Results showed that the digestibility of dry matter, gross energy, crude fiber and ADF were not affected by the dietary treatments. The inclusion of KF in gestation diets increased NDF digestibility (P<0.05) and tended to increase the digestibility of CP (P=0.05) compared with the control diet group. In addition, dietary treatment during gestation did not affect litter size, BW and backfat gain during gestation, lactation weight, backfat loss or weaning-to-estrus interval of sows. However, sows fed the KF diet consumed more (P<0.05) lactation diet per day than sows in the control group. Accordingly, sows fed the KF diet showed greater average piglet weights on day 21 of lactation (P=0.09), and the litter weight of sows fed the KF diet on day 21 of lactation increased by 3.95 kg compared with sows fed the control diet (not significant). In conclusion, the inclusion of KF in gestation diets increased lactation feed intake of sows and tended to improve litter performance.
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Behera SS, Ray RC. Nutritional and potential health benefits of konjac glucomannan, a promising polysaccharide of elephant foot yam,Amorphophallus konjacK. Koch: A review. FOOD REVIEWS INTERNATIONAL 2016. [DOI: 10.1080/87559129.2015.1137310] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wang S, Zhou B, Wang Y, Li B. Preparation and characterization of konjac glucomannan microcrystals through acid hydrolysis. Food Res Int 2015. [DOI: 10.1016/j.foodres.2014.11.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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de Souza A, Hull PA, Gille S, Pauly M. Identification and functional characterization of the distinct plant pectin esterases PAE8 and PAE9 and their deletion mutants. PLANTA 2014; 240:1123-38. [PMID: 25115560 PMCID: PMC4200376 DOI: 10.1007/s00425-014-2139-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 07/28/2014] [Indexed: 05/20/2023]
Abstract
PAE8 and PAE9 have pectin acetylesterase activity and together remove one-third of the cell wall acetate associated with pectin formation in Arabidopsis leaves. In pae8 and pae9 mutants, substantial amounts of acetate accumulate in cell walls. In addition, the inflorescence stem height is decreased. Pectic polysaccharides constitute a significant part of the primary cell walls in dicotyledonous angiosperms. This diverse group of polysaccharides has been implicated in several physiological processes including cell-to-cell adhesion and pathogenesis. Several pectic polysaccharides contain acetyl-moieties directly affecting their physical properties such as gelling capacity, an important trait for the food industry. In order to gain further insight into the biological role of pectin acetylation, a reverse genetics approach was used to investigate the function of genes that are members of the Pectin AcetylEsterase gene family (PAE) in Arabidopsis. Mutations in two members of the PAE family (PAE8 and PAE9) lead to cell walls with an approximately 20 % increase in acetate content. High-molecular-weight fractions enriched in pectic rhamnogalacturonan I (RGI) extracted from the mutants had increased acetate content. In addition, the pae8 mutant displayed increased acetate content also in low-molecular-weight pectic fractions. The pae8/pae9-2 double mutant exhibited an additive effect by increasing wall acetate content by up to 37 %, suggesting that the two genes are not redundant and act on acetyl-substituents of different pectic domains. The pae8 and pae8/pae9-2 mutants exhibit reduced inflorescence growth underscoring the role of pectic acetylation in plant development. When heterologously expressed and purified, both gene products were shown to release acetate from the corresponding mutant pectic fractions in vitro. PAEs play a significant role in modulating the acetylation state of pectic polymers in the wall, highlighting the importance of apoplastic metabolism for the plant cell and plant growth.
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Affiliation(s)
- Amancio de Souza
- Department of Plant and Microbial Biology, Energy Biosciences Institute, University of California, Energy Biosciences Building 212C, 2151 Berkeley Way, Berkeley, CA 94720-5230 USA
| | - Philip A. Hull
- Department of Plant and Microbial Biology, Energy Biosciences Institute, University of California, Energy Biosciences Building 212C, 2151 Berkeley Way, Berkeley, CA 94720-5230 USA
- Gladstone Institute of Virology and Immunology, PO Box 419100, San Francisco, CA 94141-9100 USA
| | - Sascha Gille
- Department of Plant and Microbial Biology, Energy Biosciences Institute, University of California, Energy Biosciences Building 212C, 2151 Berkeley Way, Berkeley, CA 94720-5230 USA
- Bayer CropScience, Weed Control Biochemistry and Biotechnology, 65929 Frankfurt am Main, Germany
| | - Markus Pauly
- Department of Plant and Microbial Biology, Energy Biosciences Institute, University of California, Energy Biosciences Building 212C, 2151 Berkeley Way, Berkeley, CA 94720-5230 USA
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Zhang M, Wang F, Liu R, Tang X, Zhang Q, Zhang Z. Effects of superfine grinding on physicochemical and antioxidant properties of Lycium barbarum polysaccharides. Lebensm Wiss Technol 2014. [DOI: 10.1016/j.lwt.2014.04.020] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tao B, Ye F, Li H, Hu Q, Xue S, Zhao G. Phenolic profile and in vitro antioxidant capacity of insoluble dietary fiber powders from citrus (Citrus junos Sieb. ex Tanaka) pomace as affected by ultrafine grinding. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:7166-7173. [PMID: 24954003 DOI: 10.1021/jf501646b] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The effects of mechanical and jet grindings on the proximate composition, phenolics, and antioxidant capacity of insoluble antioxidant dietary fiber powder from citrus pomace (IADFP-CP) were investigated in comparison with ordinary grinding. IADFP-CP from jet grinding showed higher levels of crude fat, total sugar, and free phenolics and lower levels of crude protein and bound phenolics than that from ordinary grinding. Totally, 14 phenolics (9 free, 1 bound, and 4 free/bound) in IADFP-CP were identified by RP-HPLC-DAD/ESI-Q-TOF-MS/MS. Hesperidin accounted for >57% of total phenolics in IADFP-CP. Among IADFP-CPs, the jet-ground presented the highest free phenolics but the lowest bound phenolics. The IADFP-CP from jet grinding presented the highest antioxidant capacity of free phenolics (by DPPH and FRAP assays), followed by the ones from mechanical and then ordinary grinding. The present study suggests that jet grinding could improve the extraction of phenolic compounds from IADFP-CP and increase the antioxidant capacities of free phenolics and the resultant powder.
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Affiliation(s)
- Bingbing Tao
- College of Food Science, Southwest University , Chongqing 400715, People's Republic of China
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Faridah A, Bambang Widjanarko S. PENAMBAHAN TEPUNG PORANG PADA PEMBUATAN MI DENGAN SUBSTITUSI TEPUNG MOCAF (Modified cassava FLOUR). JURNAL TEKNOLOGI DAN INDUSTRI PANGAN 2014. [DOI: 10.6066/jtip.2014.25.1.98] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Xu W, Wang Y, Jin W, Wang S, Zhou B, Li J, Li B, Wang L. A one-step procedure for elevating the quality of konjac flour: Azeotropy-assisted acidic ethanol. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2013.08.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Guo J, Yang S, Peng X, Li F, Zhou L, Pu Q. Microwave-assisted derivatization for fast and efficient analysis of saccharides on disposable microchips. RSC Adv 2014. [DOI: 10.1039/c4ra07934e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
A domestic microwave oven was used to achieve rapid derivatization of saccharides for their microchip electrophoresis analysis.
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Affiliation(s)
- Jinxiu Guo
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou, China
| | - Shenghong Yang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou, China
| | - Xianglu Peng
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou, China
| | - Fengyun Li
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou, China
| | - Lei Zhou
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou, China
| | - Qiaosheng Pu
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou, China
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Synergistic degradation of konjac glucomannan by alkaline and thermal method. Carbohydr Polym 2013; 99:270-7. [PMID: 24274506 DOI: 10.1016/j.carbpol.2013.08.029] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 07/30/2013] [Accepted: 08/15/2013] [Indexed: 11/20/2022]
Abstract
The application of konjac glucomannan (KGM) in the food industry is always limited by its high viscosity. Hereby, low-viscosity KGM was prepared by alkaline-thermal degradation method. This process was demonstrated by the changes of average molecular weight and a kinetic model was developed. The results revealed that high alkalinity and high temperature had a synergetic effect on degradation. The structure of hydrolysates was evaluated by periodate oxidation and their fluidly properties were researched by rheology measurements. The degradation was divided into two regimes. The rate of the first regime (within 1h) is higher than that of the second one (last 1h). It is found that alkaline hydrolysis and deacetylation have a synergistic effect on the degradation under high alkalinity (pH 9.2) and low temperature condition (25 °C). Finally, rheology parameters showed alkaline-thermal degradation is a promising way that can be applied in practice to degrade KGM.
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Young W, Roy NC, Lee J, Lawley B, Otter D, Henderson G, Tannock GW. Bowel microbiota moderate host physiological responses to dietary konjac in weanling rats. J Nutr 2013; 143:1052-60. [PMID: 23700349 DOI: 10.3945/jn.113.174854] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Diets rich in complex carbohydrates that resist digestion in the small bowel can alter large bowel ecology and microbiota biochemistry because the carbohydrates become substrates for bacterial growth and metabolism. Conventional or germ-free weanling rats were fed a control diet or diets containing 1.25, 2.5, or 5% konjac (KJ), a commonly used ingredient in Asian foods, for 28 d. In the absence of bowel microbiota, 5% KJ elicited a significant increase in colonic goblet cell numbers and increased expression of mast cell protease genes and of genes that were overrepresented in the KEGG pathway "Metabolism of xenobiotics by cytochrome P450" relative to the control diet. In contrast, feeding 5% KJ caused few changes in mucosal gene expression in conventional rats. Analysis of the colonic microbiota of conventional rats fed KJ showed modest increases in the proportions of Actinobacteria and Bacteroidetes relative to rats fed the control diet, with a concomitant reduction in Firmicutes, which included a 50% reduction in Lactobacillus abundance. Colonic concentrations of short-chain fatty acids and colonic crypt lengths were increased by feeding KJ. Goblet cell numbers were greater in conventional rats fed KJ relative to the control diet but were lower compared with germ-free animals. Serum metabolite profiles were different in germ-free and conventional rats. Metabolites that differed in concentration included several phospholipids, a bile acid metabolite, and an intermediate product of tryptophan metabolism. Overall, KJ in the diet was potentially damaging to the bowel mucosa and produced a protective response from the host. This response was reduced by the presence of the bowel microbiota, which therefore ameliorated potentially detrimental effects of dietary KJ.
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Affiliation(s)
- Wayne Young
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand.
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Pan T, Peng S, Xu Z, Xiong B, Wen C, Yao M, Pang J. Synergetic degradation of konjac glucomannan by γ-ray irradiation and hydrogen peroxide. Carbohydr Polym 2013; 93:761-7. [DOI: 10.1016/j.carbpol.2012.11.075] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 11/16/2012] [Accepted: 11/26/2012] [Indexed: 11/25/2022]
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Chua M, Chan K, Hocking TJ, Williams PA, Perry CJ, Baldwin TC. Methodologies for the extraction and analysis of konjac glucomannan from corms of Amorphophallus konjac K. Koch. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.10.053] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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42
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Abhyankar AR, Mulvihill DM, Chaurin V, Auty MA. Techniques for localisation of konjac glucomannan in model milk protein–polysaccharide mixed systems: Physicochemical and microscopic investigations. Food Chem 2011. [DOI: 10.1016/j.foodchem.2011.05.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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Tobin JT, Fitzsimons SM, Kelly AL, Fenelon MA. The effect of native and modified konjac on the physical attributes of pasteurized and UHT-treated skim milk. Int Dairy J 2011. [DOI: 10.1016/j.idairyj.2011.04.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Gille S, Cheng K, Skinner ME, Liepman AH, Wilkerson CG, Pauly M. Deep sequencing of voodoo lily (Amorphophallus konjac): an approach to identify relevant genes involved in the synthesis of the hemicellulose glucomannan. PLANTA 2011; 234:515-26. [PMID: 21538106 PMCID: PMC3162142 DOI: 10.1007/s00425-011-1422-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Accepted: 04/18/2011] [Indexed: 05/23/2023]
Abstract
A Roche 454 cDNA deep sequencing experiment was performed on a developing corm of Amorphophallus konjac--also known as voodoo lily. The dominant storage polymer in the corm of this plant is the polysaccharide glucomannan, a hemicellulose known to exist in the cell walls of higher plants and a major component of plant biomass derived from softwoods. A total of 246 mega base pairs of sequence data was obtained from which 4,513 distinct contigs were assembled. Within this voodoo lily expressed sequence tag collection genes representing the carbohydrate related pathway of glucomannan biosynthesis were identified, including sucrose metabolism, nucleotide sugar conversion pathways for the formation of activated precursors as well as a putative glucomannan synthase. In vivo expression of the putative glucomannan synthase and subsequent in vitro activity assays unambiguously demonstrate that the enzyme has indeed glucomannan mannosyl- and glucosyl transferase activities. Based on the expressed sequence tag analysis hitherto unknown pathways for the synthesis of GDP-glucose, a necessary precursor for glucomannan biosynthesis, could be proposed. Moreover, the results highlight transcriptional bottlenecks for the synthesis of this hemicellulose.
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Affiliation(s)
- Sascha Gille
- Energy Biosciences Institute, University of California-Berkeley, 130 Calvin Laboratory MC 5230, Berkeley, CA USA
| | - Kun Cheng
- Energy Biosciences Institute, University of California-Berkeley, 130 Calvin Laboratory MC 5230, Berkeley, CA USA
| | - Mary E. Skinner
- Biology Department, Eastern Michigan University, 316 Mark Jefferson Building, Ypsilanti, MI USA
| | - Aaron H. Liepman
- Biology Department, Eastern Michigan University, 316 Mark Jefferson Building, Ypsilanti, MI USA
| | - Curtis G. Wilkerson
- Plant Biology Department, Michigan State University, 178 Wilson Road, East Lansing, MI USA
| | - Markus Pauly
- Energy Biosciences Institute, University of California-Berkeley, 130 Calvin Laboratory MC 5230, Berkeley, CA USA
- Department of Plant and Microbial Biology, University of California-Berkeley, 130 Calvin Laboratory MC 5230, Berkeley, CA 94720-5230 USA
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Ha W, Wu H, Wang XL, Peng SL, Ding LS, Zhang S, Li BJ. Self-aggregates of cholesterol-modified carboxymethyl konjac glucomannan conjugate: Preparation, characterization, and preliminary assessment as a carrier of etoposide. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.04.083] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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Li Q, Xia B, Branham M, Ha W, Wu H, Peng SL, Ding LS, Li BJ, Zhang S. Self-assembly of carboxymethyl konjac glucomannan-g-poly(ethylene glycol) and (α-cyclodextrin) to biocompatible hollow nanospheres for glucose oxidase encapsulation. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.04.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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47
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Chua M, Baldwin TC, Hocking TJ, Chan K. Traditional uses and potential health benefits of Amorphophallus konjac K. Koch ex N.E.Br. JOURNAL OF ETHNOPHARMACOLOGY 2010; 128:268-278. [PMID: 20079822 DOI: 10.1016/j.jep.2010.01.021] [Citation(s) in RCA: 201] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Revised: 01/06/2010] [Accepted: 01/06/2010] [Indexed: 05/28/2023]
Abstract
Amorphophallus konjac (konjac) has long been used in China, Japan and South East Asia as a food source and as a traditional medicine. Flour extracted from the corm of this species is used in Far Eastern cuisine to make noodles, tofu and snacks. In traditional Chinese medicine (TCM), a gel prepared from the flour has been used for detoxification, tumour-suppression, blood stasis alleviation and phlegm liquefaction; and for more than 2000 years has been consumed by the indigenous people of China for the treatment of asthma, cough, hernia, breast pain, burns as well as haematological and skin disorders. Over the past two decades, purified konjac flour, commonly known as konjac glucomannan (KGM) has been introduced on a relatively small scale into the United States and Europe, both as a food additive and a dietary supplement. The latter is available in capsule form or as a drink mix and in food products. Clinical studies have demonstrated that supplementing the diet with KGM significantly lowers plasma cholesterol, improves carbohydrate metabolism, bowel movement and colonic ecology. Standards for the classification of both konjac flour and KGM have been established by the Chinese Ministry of Agriculture, the European Commission and the U.S. Food Chemicals Codex. However, to date, there is no worldwide agreed regulatory standard for konjac flour or KGM. This highlights the need for harmonization of konjac commercial standards to assess and ensure the quality of existing and future KGM products. Despite the widespread consumption of konjac derived products in East and South East Asia, there has been limited research on the biology, processing and cultivation of this species in the West. Most studies performed outside Asia have focussed on the structural characterisation and physicochemical properties of KGM. Therefore, the objective of this monograph is to review the literature covering the ethnic uses, botany and cultivation of konjac corms, together with the health benefits of KGM with the associated requirements for quality control. Possible directions for future research and development and standardisation of production and classification of this versatile natural product will be discussed.
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Affiliation(s)
- Melinda Chua
- School of Applied Sciences, University of Wolverhampton, Wulfruna Street, Wolverhampton WV11LY, United Kingdom
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Preparation and characterization of a poly(ethylene glycol) grafted carboxymethyl konjac glucomannan copolymer. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2009.09.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Abhyankar AR, Mulvihill DM, Fenelon MA, Auty MA. Microstructural characterization of β-lactoglobulin–konjac glucomannan systems: Effect of NaCl concentration and heating conditions. Food Hydrocoll 2010. [DOI: 10.1016/j.foodhyd.2009.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang R, Xia B, Li BJ, Peng SL, Ding LS, Zhang S. Semi-permeable nanocapsules of konjac glucomannan–chitosan for enzyme immobilization. Int J Pharm 2008; 364:102-7. [DOI: 10.1016/j.ijpharm.2008.07.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2008] [Revised: 07/25/2008] [Accepted: 07/27/2008] [Indexed: 11/30/2022]
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