1
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Bae D, Song YB, Choi H, Lee BH. Slowly hydrolyzable property of microbial dextrans at the small intestinal α-glucosidase levels leads to the modulated glycemic responses in the mouse model. Int J Biol Macromol 2024; 277:134322. [PMID: 39094862 DOI: 10.1016/j.ijbiomac.2024.134322] [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: 11/09/2023] [Revised: 07/01/2024] [Accepted: 07/29/2024] [Indexed: 08/04/2024]
Abstract
Dextran-type α-glucans have been known as non-digestible ingredients that can be considered prebiotics to promote colon health. However, recent studies have revealed that various α-linked glucosyl units are hydrolyzed to glucose by small intestinal α-glucosidases. This study analyzed the structural characteristics of exopolysaccharides (EPSs) from Weissella species, and the hydrolysis properties at both in vitro/in vivo levels were investigated. Compared with a previous in vitro digestion model using fungal α-hydrolytic enzymes, dextrans, which mainly consist of α-1,6 linkages with small amounts of α-1,3 linked glucose units, were slowly hydrolyzed to glucose by mammalian mucosal α-glucosidases, resulting in attenuation of the initial glycemic response following administration of EPS samples to mice via oral gavage. The results of this study demonstrate the concept of dextran-type α-glucans as glycemic carbohydrates rather than dietary fibers or prebiotics. Slowly digestible dextrans can be applied as a functional ingredient to regulate postprandial glucose delivery throughout the gastrointestinal tract.
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Affiliation(s)
- Dain Bae
- Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, Republic of Korea
| | - Young-Bo Song
- Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, Republic of Korea
| | - Hyunwook Choi
- Department of Food and Nutrition, Jeonju University, Jeonju 55069, Republic of Korea.
| | - Byung-Hoo Lee
- Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, Republic of Korea.
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2
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Li D, Xu W, Mu S, Gao X, Ma F, Duan C, Li X. Replacement of Loops at the Entrance of the Active Pocket of Streptococcus thermophilus 4,6-α-Glucanotransferase Changes Its Catalytic Activity and Product Specificity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:12607-12617. [PMID: 38785045 DOI: 10.1021/acs.jafc.4c00803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
To explore the roles of loops around active pocket in the reuteran type 4,6-α-glucanotransferase (StGtfB) from S. thermophilus, they were individually or simultaneously replaced with those of an isomalto/maltopolysaccharides type 4,6-α-glucanotransferase from L. reuteri. StGtfB with the replaced loops A1, A2 (A1A2) and A1, A2, B (A1A2B), respectively, showed 1.41- and 0.83-fold activities of StGtfB. Two mutants reduced crystallinity and increased starch disorder at 2, 4, and 8 U/g more than StGtfB and increased DP ≤ 5 short branches of starch by 38.01% at 2 U/g, much more than StGtfB by 4.24%. A1A2B modified starches had the lowest retrogradation over 14 days. A1A2 modified starches had the highest percentage of slowly digestible fractions, ranging from 40.32% to 43.34%. StGtfB and its mutants bind substrates by hydrogen bonding and van der Waals forces at their nonidentical amino acid residues, suggesting that loop replacement leads to a different conformation and changes activity and product structure.
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Affiliation(s)
- Dan Li
- Key Laboratory of Agro-products Processing Technology, Education Department of Jilin Province, Changchun University, 6543 Weixing Road, Changchun 130022, People's Republic of China
- Key Laboratory of Intelligent Rehabilitation and Barrier-free For the Disabled, Ministry of Education, Changchun University, 6543 Weixing Road, Changchun 130022, People's Republic of China
| | - Wenqi Xu
- Key Laboratory of Agro-products Processing Technology, Education Department of Jilin Province, Changchun University, 6543 Weixing Road, Changchun 130022, People's Republic of China
| | - Siyu Mu
- Key Laboratory of Agro-products Processing Technology, Education Department of Jilin Province, Changchun University, 6543 Weixing Road, Changchun 130022, People's Republic of China
| | - Xusheng Gao
- Key Laboratory of Agro-products Processing Technology, Education Department of Jilin Province, Changchun University, 6543 Weixing Road, Changchun 130022, People's Republic of China
| | - Fumin Ma
- Key Laboratory of Agro-products Processing Technology, Education Department of Jilin Province, Changchun University, 6543 Weixing Road, Changchun 130022, People's Republic of China
| | - Cuicui Duan
- Key Laboratory of Agro-products Processing Technology, Education Department of Jilin Province, Changchun University, 6543 Weixing Road, Changchun 130022, People's Republic of China
| | - Xiaolei Li
- Key Laboratory of Agro-products Processing Technology, Education Department of Jilin Province, Changchun University, 6543 Weixing Road, Changchun 130022, People's Republic of China
- Key Laboratory of Intelligent Rehabilitation and Barrier-free For the Disabled, Ministry of Education, Changchun University, 6543 Weixing Road, Changchun 130022, People's Republic of China
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3
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Hu Y, Wang L, Julian McClements D. Design, characterization and digestibility of β-carotene-loaded emulsion system stabilized by whey protein with chitosan and potato starch addition. Food Chem 2024; 440:138131. [PMID: 38103502 DOI: 10.1016/j.foodchem.2023.138131] [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: 06/27/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/19/2023]
Abstract
The physicochemical properties and gastrointestinal fate of β-carotene-loaded emulsions and emulsion gels were examined. The emulsion was emulsified by whey protein isolate and incorporated with chitosan, then the emulsion gels were produced by gelatinizing potato starch in the aqueous phase. The rheology properties, water distribution, and microstructure of emulsions and emulsion gels were modulated by chitosan combination. A standardized INFOGEST method was employed to track the gastrointestinal fate of emulsion systems. Significant changes in droplet size, zeta-potential, and aggregation state were detected during in vitro digestion, including simulated oral, stomach, and small intestine phases. The presence of chitosan led to a significantly reduced free fatty acids release in emulsion, whereas a slightly increasing released amount in the emulsion gel. β-carotene bioaccessibility was significantly improved by hydrogel formation and chitosan addition. These results could be used to formulate advanced emulsion systems to improve the gastrointestinal fate of hydrophobic nutraceuticals.
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Affiliation(s)
- Yuying Hu
- School of Biological Engineering and Food, Hubei University of Technology, Wuhan 430068, China; College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA.
| | - Lufeng Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
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Zhan L, Lin Z, Li W, Qin Y, Sun Q, Ji N, Xie F. The Construction of Sodium Alginate/Carboxymethyl Chitosan Microcapsules as the Physical Barrier to Reduce Corn Starch Digestion. Foods 2024; 13:1355. [PMID: 38731726 PMCID: PMC11083366 DOI: 10.3390/foods13091355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/13/2024] [Accepted: 04/14/2024] [Indexed: 05/13/2024] Open
Abstract
To enhance the resistant starch (RS) content of corn starch, in this work, carboxymethyl chitosan/corn starch/sodium alginate microcapsules (CMCS/CS/SA) with varying concentrations of SA in a citric acid (CA) solution were designed. As the SA concentration increased from 0.5% to 2%, the swelling of the CMCS/CS/SA microcapsule decreased from 15.28 ± 0.21 g/g to 3.76 ± 0.66 g/g at 95 °C. Comparatively, the onset, peak, and conclusion temperatures (To, Tp, and Tc) of CMCS/CS/SA microcapsules were higher than those of unencapsulated CS, indicating that the dense network structure of microcapsules reduced the contact area between starch granules and water, thereby improving thermal stability. With increasing SA concentration, the intact and dense network of CMCS/CS/SA microcapsules remained less damaged after 120 min of digestion, suggesting that the microcapsules with a high SA concentration provided better protection to starch, thereby reducing amylase digestibility. Moreover, as the SA concentration increased from 0.5% to 2%, the RS content of the microcapsules during in vitro digestion rose from 42.37 ± 0.07% to 57.65 ± 0.45%, attributed to the blocking effect of the microcapsule shell on amylase activity. This study offers innovative insights and strategies to develop functional starch with glycemic control properties, holding significant scientific and practical value in preventing diseases associated with abnormal glucose metabolism.
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Affiliation(s)
- Linjie Zhan
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (L.Z.); (Z.L.); (W.L.); (Y.Q.); (Q.S.)
- Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Zhiwei Lin
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (L.Z.); (Z.L.); (W.L.); (Y.Q.); (Q.S.)
- Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Weixian Li
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (L.Z.); (Z.L.); (W.L.); (Y.Q.); (Q.S.)
- Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Yang Qin
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (L.Z.); (Z.L.); (W.L.); (Y.Q.); (Q.S.)
- Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Qingjie Sun
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (L.Z.); (Z.L.); (W.L.); (Y.Q.); (Q.S.)
- Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Na Ji
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; (L.Z.); (Z.L.); (W.L.); (Y.Q.); (Q.S.)
- Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Fengwei Xie
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, UK;
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Yao S, Zhu Q, Xianyu Y, Liu D, Xu E. Polymorphic nanostarch-mediated assembly of bioactives. Carbohydr Polym 2024; 324:121474. [PMID: 37985040 DOI: 10.1016/j.carbpol.2023.121474] [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: 07/23/2023] [Revised: 09/08/2023] [Accepted: 10/08/2023] [Indexed: 11/22/2023]
Abstract
Starch as an edible, biosafe, and functional biopolymer, has been tailored at nanoscale to deliver bioactive guests. Nanostarches fabricated in various morphologies including nanosphere, nanorod, nanoworm, nanovesicle, nanopolyhedron, nanoflake, nanonetwork etc., enable them to assemble different kinds of bioactives due to structural particularity and green modification. Previous studies have reviewed nanostarch for its preparation and application in food, however, no such work has been done for the potential of delivery system via polymorphic nanostarches. In this review, we focus on the merits of nanostarch empowered by multi-morphology for delivery system, and also conclude the assembly strategies and corresponding properties of nanostarch-based carrier. Additionally, the advantages, limitations, and future perspectives of polymorphic nanostarch are summarized to better understand the micro/nanostarch architectures and their regulation for the compatibility of bioactive molecules. According to the morphology of carrier, nanostarch effectively captures bioactives on the surface and/or inside core to form tight complexes, which maintains their stability in the human microenvironment. It improves the bioavailability of bioactive guests by different assembly approaches of carrier/guest surface combination, guest@carrier embedment, and nanostarch-mediated encapsulation. Targeted release of delivery systems is stimulated by the microenvironment conditions based on the complex structure of nanostarch loaded with bioactives.
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Affiliation(s)
- Siyu Yao
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Qingqing Zhu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314103, China
| | - Yunlei Xianyu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314103, China
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314103, China
| | - Enbo Xu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; State Key Laboratory of Fluid Power and Mechatronic Systems, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Integrated Research Base of Southern Fruit and Vegetable Preservation Technology, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Innovation Center of Yangtze River Delta, Zhejiang University, Jiashan 314103, China.
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6
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Zhu J, Long J, Li X, Lu C, Zhou X, Chen L, Qiu C, Jin Z. Improving the thermal stability and branching efficiency of Pyrococcus horikoshii OT3 glycogen branching enzyme. Int J Biol Macromol 2024; 255:128010. [PMID: 37979752 DOI: 10.1016/j.ijbiomac.2023.128010] [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: 07/20/2023] [Revised: 10/14/2023] [Accepted: 11/08/2023] [Indexed: 11/20/2023]
Abstract
In practical applications, the gelatinisation temperature of starch is high. Most current glycogen branching enzymes (GBEs, EC 2.4.1.18) exhibit optimum activity at moderate or low temperatures and quickly lose their activity at higher temperatures, limiting the application of GBEs in starch modification. Therefore, we used the PROSS strategy combined with PDBePISA analysis of the dimer interface to further improve the heat resistance of hyperthermophilic bacteria Pyrococcus horikoshii OT3 GBE. The results showed that the melting temperature of mutant T508K increased by 3.1 °C compared to wild-type (WT), and the optimum reaction temperature increased by 10 °C for all mutants except V140I. WT almost completely lost its activity after incubation at 95 °C for 60 h, while all of the combined mutants maintained >40 % of their residual activity. Further, the content of the α-1,6 glycosidic bond of corn starch modified by H415W and V140I/H415W was approximately 2.68-fold and 1.92-fold higher than that of unmodified corn starch and corn starch modified by WT, respectively. Additionally, the glucan chains of DP < 13 were significantly increased in mutant modified corn starch. This method has potential for improving the thermal stability of GBE, which can be applied in starch branching in the food industry.
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Affiliation(s)
- Jing Zhu
- The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China
| | - Jie Long
- The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China
| | - Xingfei Li
- The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China
| | - Cheng Lu
- The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Bioengineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Xing Zhou
- The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Long Chen
- The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Chao Qiu
- The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Zhengyu Jin
- The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China.
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7
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Kumari B, Sit N. Comprehensive review on single and dual modification of starch: Methods, properties and applications. Int J Biol Macromol 2023; 253:126952. [PMID: 37722643 DOI: 10.1016/j.ijbiomac.2023.126952] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/11/2023] [Accepted: 09/12/2023] [Indexed: 09/20/2023]
Abstract
Starch is a natural, renewable, affordable, and easily available polymer used as gelling agents, thickeners, binders, and potential raw materials in various food products. Due to these techno-functional properties of starch, food and non-food industries are showing interest in developing starch-based food products such as films, hydrogels, starch nanoparticles, and many more. However, the application of native starch is limited due to its shortcomings. To overcome these problems, modification of starch is necessary. Various single and dual modification processes are used to improve techno-functional, morphological, and microstructural properties, film-forming capacity, and resistant starch. This review paper provides a comprehensive and critical understanding of physical, chemical, enzymatic, and dual modifications (combination of any two single modifications), the effects of parameters on modification, and their applications. The sequence of modification plays a key role in the dual modification process. All single modification methods modify the physicochemical properties, crystallinity, and emulsion properties, but some shortcomings such as lower thermal, acidic, and shear stability limit their application in industries. Dual modification has been introduced to overcome these limitations and maximize the effectiveness of single modification.
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Affiliation(s)
- Bharati Kumari
- Department of Food Engineering and Technology, Tezpur University, Assam 784028, India
| | - Nandan Sit
- Department of Food Engineering and Technology, Tezpur University, Assam 784028, India.
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8
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Ishiwata A, Tanaka K, Ito Y, Cai H, Ding F. Recent Progress in 1,2- cis glycosylation for Glucan Synthesis. Molecules 2023; 28:5644. [PMID: 37570614 PMCID: PMC10420028 DOI: 10.3390/molecules28155644] [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: 06/05/2023] [Revised: 06/30/2023] [Accepted: 07/02/2023] [Indexed: 08/13/2023] Open
Abstract
Controlling the stereoselectivity of 1,2-cis glycosylation is one of the most challenging tasks in the chemical synthesis of glycans. There are various 1,2-cis glycosides in nature, such as α-glucoside and β-mannoside in glycoproteins, glycolipids, proteoglycans, microbial polysaccharides, and bioactive natural products. In the structure of polysaccharides such as α-glucan, 1,2-cis α-glucosides were found to be the major linkage between the glucopyranosides. Various regioisomeric linkages, 1→3, 1→4, and 1→6 for the backbone structure, and 1→2/3/4/6 for branching in the polysaccharide as well as in the oligosaccharides were identified. To achieve highly stereoselective 1,2-cis glycosylation, including α-glucosylation, a number of strategies using inter- and intra-molecular methodologies have been explored. Recently, Zn salt-mediated cis glycosylation has been developed and applied to the synthesis of various 1,2-cis linkages, such as α-glucoside and β-mannoside, via the 1,2-cis glycosylation pathway and β-galactoside 1,4/6-cis induction. Furthermore, the synthesis of various structures of α-glucans has been achieved using the recent progressive stereoselective 1,2-cis glycosylation reactions. In this review, recent advances in stereoselective 1,2-cis glycosylation, particularly focused on α-glucosylation, and their applications in the construction of linear and branched α-glucans are summarized.
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Affiliation(s)
| | - Katsunori Tanaka
- RIKEN, Cluster for Pioneering Research, Saitama 351-0198, Japan
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan
| | - Yukishige Ito
- RIKEN, Cluster for Pioneering Research, Saitama 351-0198, Japan
- Graduate School of Science, Osaka University, Osaka 560-0043, Japan
| | - Hui Cai
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Feiqing Ding
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
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Shim YE, Song YB, Yoo SH, Lee BH. Production of highly branched α-limit dextrins with enhanced slow digestibility by various glycogen-branching enzymes. Carbohydr Polym 2023; 310:120730. [PMID: 36925263 DOI: 10.1016/j.carbpol.2023.120730] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/28/2023] [Accepted: 02/17/2023] [Indexed: 02/23/2023]
Abstract
α-Limit dextrins (α-LDx) are slowly digestible carbohydrates that attenuate postprandial glycemic response and trigger the secretion of satiety-related hormones. In this study, more highly branched α-LDx were enzymatically synthesized to enhance the slowly digestible property by various origins of glycogen branching enzyme (GBE), which catalyzes the transglycosylation to form α-1,6 branching points after cleaving α-1,4 linkages. Results showed that the proportion of branched α-LDx in starch molecules increased around 2.2-8.1 % compared to α-LDx from starch without GBE treatment as the ratio of α-1,6 linkages increased after different types of GBE treatments. Furthermore, the enzymatic increment of branching points enhanced the slowly digestible properties of α-LDx at the mammalian α-glucosidase level by 17.3-28.5 %, although the rates of glucose generation were different depending on the source of GBE treatment. Thus, the highly branched α-LDx with a higher amount of α-1,6 linkages and a higher molecular weight can be applied as a functional ingredient to deliver glucose throughout the entire small intestine without a glycemic spike which has the potential to control metabolic diseases such as obesity and type 2 diabetes.
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Affiliation(s)
- Ye-Eun Shim
- Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, Republic of Korea; Core-Facility for Bionano Materials, Gachon University, Seongnam 13120, Republic of Korea
| | - Young-Bo Song
- Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, Republic of Korea
| | - Sang-Ho Yoo
- Department of Food Science and Biotechnology and Carbohydrate Bioproduct Research Center, Sejong University, Seoul 05006, Republic of Korea
| | - Byung-Hoo Lee
- Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, Republic of Korea.
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10
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Wei B, Wang L, Su L, Tao X, Chen S, Wu J, Xia W. Structural characterization of slow digestion dextrin synthesized by a combination of α-glucosidase and cyclodextrin glucosyltransferase and its prebiotic potential on the gut microbiota in vitro. Food Chem 2023; 426:136554. [PMID: 37321121 DOI: 10.1016/j.foodchem.2023.136554] [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: 09/12/2022] [Revised: 05/16/2023] [Accepted: 06/04/2023] [Indexed: 06/17/2023]
Abstract
Starch-based dietary fibers are at the forefront of functional ingredient research. In this study, a novel water-soluble slow digestion dextrin (SDD) was synthesized by synergy of α-glucosidase and cyclodextrin glucosyltransferase and characterized. Results showed that SDD exhibited high solubility, low viscosity, and resistance to digestive enzymes, and also showed an increased dietary fiber content of 45.7% compared with that of α-glucosidase catalysis alone. Furthermore, SDD was used as the sole carbon source to ferment selected intestinal strains and human fecal microflora in vitro to investigate its prebiotic effects. It was found that SDD could markedly enriched the abundance of Bifidobacterium, Veillonella, Dialister, and Blautia in human gut microflora and yielded higher total organic acid. The combination of α-glucosidase and cyclodextrin glucosyltransferase in this study showed valuable potential for the preparation of a novel slow digestion dextrin with good physicochemical properties and improved prebiotic effects.
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Affiliation(s)
- Beibei Wei
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Lei Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Lingqia Su
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Xiumei Tao
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Sheng Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Jing Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Wei Xia
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China.
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11
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Hassanein WS, İspirli H, Dertli E, Yilmaz MT. Structural characterization of potato starch modified by a 4,6-α-glucanotransferase B from Lactobacillus reuteri E81. Int J Biol Macromol 2023:124988. [PMID: 37230452 DOI: 10.1016/j.ijbiomac.2023.124988] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/06/2023] [Accepted: 05/18/2023] [Indexed: 05/27/2023]
Abstract
The recent reports have revealed that increase in amount of α-1,6 linkages by modification of potato starch with enzyme (glycosyltransferases) treatment gains slowly digestible properties to the starch; however, the formation of new α-1,6-glycosidic linkages diminish the thermal resistance of the starch granules. In this study, a putative GtfB-E81, (a 4,6-α-glucanotransferase-4,6-αGT) from L. reuteri E81 was firstly used to produce a short length of α-1,6 linkages. NMR results revealed that external short chains mostly comprised of 1-6 glucosyl units were newly produced in potato starch, and the α-1,6 linkage ratio was significantly increased from 2.9 % to 36.8 %, suggesting that this novel GtfB-E81 might have potentially an efficient transferase activity. In our study, native and GtfB-E81 modified starches showed fundamental similarities with respect to their molecular properties and treatment of native potato starch with GtfB-E81 did not remarkably change thermal stability of the potato starch, which seems to be very prominent for the food industry given the significantly decreased thermal stability results obtained for the enzyme modified starches reported in the literature. Therefore, the results of this study should open up emerging perspectives for regulating slowly digestible characteristics of potato starch in future studies without a significant change in the molecular, thermal, and crystallographic properties.
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Affiliation(s)
- Wael S Hassanein
- King Abdulaziz University, Faculty of Engineering, Department of Industrial Engineering, 21589 Jeddah, Saudi Arabia
| | - Hümeyra İspirli
- Central Research Laboratory, Bayburt University, Bayburt, Turkey
| | - Enes Dertli
- Yıldız Technical University, Chemical and Metallurgical Engineering Faculty, Department of Food Engineering, Istanbul 34000, Turkey
| | - Mustafa Tahsin Yilmaz
- King Abdulaziz University, Faculty of Engineering, Department of Industrial Engineering, 21589 Jeddah, Saudi Arabia.
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12
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Zhao D, Zhang K, Guo D, Tong X. Effect of tea polyphenols on the physicochemical, structural and digestive properties of modified high amylose corn starch. Food Funct 2023. [PMID: 37191069 DOI: 10.1039/d2fo04089a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
In this study, starch-polyphenol complexes (CES-TPS complexes) were prepared using various ratios (0%, 2%, 4%, 6%, 8%, and 10%, based on starch) of tea polyphenols (TPS) and high amylose corn starch (HACS) pretreated with starch branching enzyme (SBE). It was aimed to determine the effects of TPS on the physicochemical and structural properties and digestibility of the CES-TPS complexes. Scanning electron microscopy and laser particle size analysis showed that the addition of a moderate amount of TPS will reinforce interaction force, while excessive TPS will cause a loose structural morphology, leading to an increase in starch particle size. Thermal property analysis indicated that SBE pre-treatment decreased TO, TP and TC of HACS, and the gelatinization temperature was further reduced after adding TPS. The digestion of CES-TPS complexes was investigated using an Artificial Gut analyzer; the predicted glycemic index of starch samples decreased with the addition of a low concentration of TPS (2-6%), while there was a significant increment in the pGI of starch samples when a high concentration of TPS (8-10%) was added. XRD analysis showed that the relative crystallinity of the CES-TPS complexes further increased to 21.91% and then decreased to 19.38% with the increase of TPS concentration. The ratios of 1047/1022 cm-1 presented the opposite trend to that determined by FT-IR.
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Affiliation(s)
- Di Zhao
- Henan Academy of Agricultural Sciences, 116 Huayuan Road, Zhengzhou 450002, China.
- Henan International Union Laboratory for Whole Grain Wheat Products Processing, Henan Academy of Agricultural Sciences, 116 Huayuan Road, Zhengzhou 450002, China
| | - Kangyi Zhang
- Henan Academy of Agricultural Sciences, 116 Huayuan Road, Zhengzhou 450002, China.
- Henan International Union Laboratory for Whole Grain Wheat Products Processing, Henan Academy of Agricultural Sciences, 116 Huayuan Road, Zhengzhou 450002, China
| | - Dongxu Guo
- Henan Academy of Agricultural Sciences, 116 Huayuan Road, Zhengzhou 450002, China.
- Henan International Union Laboratory for Whole Grain Wheat Products Processing, Henan Academy of Agricultural Sciences, 116 Huayuan Road, Zhengzhou 450002, China
| | - Xiaofeng Tong
- Henan Agricultural University, Zhengzhou 450002, China
- Henan International Union Laboratory for Whole Grain Wheat Products Processing, Henan Academy of Agricultural Sciences, 116 Huayuan Road, Zhengzhou 450002, China
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13
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Fu Z, Zhang X, Liu J, Li J, Zeng Y, Yang J, Sun Y, Cui J, Zhu Y. Enzymatic synthesis and immunomodulatory activity of highly branched α-D-glucans with glycogen-like structure. Int J Biol Macromol 2023; 237:123882. [PMID: 37015174 DOI: 10.1016/j.ijbiomac.2023.123882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 02/12/2023] [Accepted: 02/26/2023] [Indexed: 04/05/2023]
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14
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Li X, Wang Y, Wu J, Jin Z, Dijkhuizen L, Svensson B, Bai Y. Designing starch derivatives with desired structures and functional properties via rearrangements of glycosidic linkages by starch-active transglycosylases. Crit Rev Food Sci Nutr 2023; 64:8265-8278. [PMID: 37051937 DOI: 10.1080/10408398.2023.2198604] [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] [Indexed: 04/14/2023]
Abstract
Modification of starch by transglycosylases from glycoside hydrolase families has attracted much attention recently; these enzymes can produce starch derivatives with novel properties, i.e. processability and functionality, employing highly efficient and safe methods. Starch-active transglycosylases cleave starches and transfer linear fragments to acceptors introducing α-1,4 and/or linear/branched α-1,6 glucosidic linkages, resulting in starch derivatives with excellent properties such as complexing and resistance to digestion characteristics, and also may be endowed with new properties such as thermo-reversible gel formation. This review summarizes the effects of variations in glycosidic linkage composition on structure and properties of modified starches. Starch-active transglycosylases are classified into 4 groups that form compounds: (1) in cyclic with α-1,4 glucosidic linkages, (2) with linear chains of α-1,4 glucosidic linkages, (3) with branched α-1,6 glucosidic linkages, and (4) with linear chains of α-1,6 glucosidic linkages. We discuss potential processability and functionality of starch derivatives with different linkage combinations and structures. The changes in properties caused by rearrangements of glycosidic linkages provide guidance for design of starch derivatives with desired structures and properties, which promotes the development of new starch products and starch processing for the food industry.
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Affiliation(s)
- Xiaoxiao Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Yu Wang
- Enzyme and Protein Chemistry, Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Jing Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
| | - Zhengyu Jin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Lubbert Dijkhuizen
- CarbExplore Research B.V, Groningen, The Netherlands
- Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, The Netherlands
| | - Birte Svensson
- Enzyme and Protein Chemistry, Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Yuxiang Bai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
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15
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Properties and in vitro digestibility of starch encapsulated in chitosan-sodium phytate capsules. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Yang T, Hu Q, Liu Y, Xu R, Wang D, Chang Z, Jin M, Huang J. Biochemical characteristics and potential application of a thermostable starch branching enzyme from Bacillus licheniformis. AMB Express 2023; 13:8. [PMID: 36662316 PMCID: PMC9859979 DOI: 10.1186/s13568-023-01511-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 01/08/2023] [Indexed: 01/21/2023] Open
Abstract
Slowly digestible starch (SDS) has attracted increasing attention for its function of preventing metabolic diseases. Based on transglycosylation, starch branching enzymes (1,4-α-glucan branching enzymes, GBEs, EC 2.4.1.18) can be used to regulate the digestibility of starch. In this study, a GBE gene from Bacillus licheniformis (bl-GBE) was cloned, expressed, purified, and characterized. Sequence analysis and structural modeling showed that bl-GBE belong to the glycoside hydrolase 13 (GH13) family, with which its active site residues were conserved. The bl-GBE was highly active at 80 °C and a pH range of 7.5-9.0, and retained 90% of enzyme activity at 70 °C for 16 h. bl-GBE also showed high substrate specificity (80.88 U/mg) on potato starch. The stability and the changes of the secondary structure of bl-GBE at different temperature were determined by circular dichroism (CD) spectroscopy. The CD data showed a loss of 20% of the enzyme activity at high temperatures (80 °C), due to the decreased content of the α -helix in the secondary structure. Furthermore, potato starch treated with bl-GBE (300 U/g starch) showed remarkable increase in stability, solubility, and significant reduction viscosity. Meanwhile, the slowly digestible starch content of bl-GBE modified potato starch increased by 53.03% compared with native potato starch. Our results demonstrated the potential applications of thermophilic bl-GBE in food industries.
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Affiliation(s)
- Ting Yang
- grid.22069.3f0000 0004 0369 6365School of Life Sciences, East China Normal University, Shanghai, 200241 China
| | - Qianyu Hu
- grid.22069.3f0000 0004 0369 6365School of Life Sciences, East China Normal University, Shanghai, 200241 China
| | - Yu Liu
- grid.22069.3f0000 0004 0369 6365School of Life Sciences, East China Normal University, Shanghai, 200241 China
| | - Rui Xu
- grid.22069.3f0000 0004 0369 6365School of Life Sciences, East China Normal University, Shanghai, 200241 China
| | - Dongrui Wang
- grid.22069.3f0000 0004 0369 6365School of Life Sciences, East China Normal University, Shanghai, 200241 China
| | - Zhongyi Chang
- grid.22069.3f0000 0004 0369 6365School of Life Sciences, East China Normal University, Shanghai, 200241 China
| | - Mingfei Jin
- grid.22069.3f0000 0004 0369 6365School of Life Sciences, East China Normal University, Shanghai, 200241 China
| | - Jing Huang
- grid.22069.3f0000 0004 0369 6365School of Life Sciences, East China Normal University, Shanghai, 200241 China
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17
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Adewale P, Yancheshmeh MS, Lam E. Starch modification for non-food, industrial applications: Market intelligence and critical review. Carbohydr Polym 2022; 291:119590. [DOI: 10.1016/j.carbpol.2022.119590] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/20/2022] [Accepted: 05/05/2022] [Indexed: 12/15/2022]
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18
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Punia Bangar S, Ashogbon AO, Lorenzo JM, Phimolsiripol Y, Chaudhary V. Recent advancements in properties, modifications, and applications of legume starches. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Sneh Punia Bangar
- Department of Food, Nutrition and Packaging Sciences Clemson University USA
| | | | - Jose M. Lorenzo
- Centro Tecnológico de la Carne de Galicia, Avd. Galicia n° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas Ourense Spain
- Universidade de Vigo, Área de Tecnología de los Alimentos, Facultad de Ciencias de Ourense Ourense Spain
| | | | - Vandana Chaudhary
- College of Dairy Science and Technology Lala Lajpat Rai University of Veterinary and Animal Sciences Hisar Haryana India
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19
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Gui Y, Wei X, Yang N, Guo L, Cui B, Zou F, Lu L, Liu P, Fang Y. Comparison of structural and functional properties of maize starch produced with commercial or endogenous enzymes. Int J Biol Macromol 2022; 209:2213-2225. [PMID: 35504411 DOI: 10.1016/j.ijbiomac.2022.04.202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/18/2022] [Accepted: 04/27/2022] [Indexed: 11/05/2022]
Abstract
To explore an effective and economic method to prepare higher contents of resistant starch (RS), different enzyme treatments including single pullulanase (PUL), commercial α-amylase (AA) or/and β-amylase (BA) with PUL, and malt endogenous amylase (MA) with PUL were used and the structural, physicochemical properties and digestibility of all modified starches (MS) were compared. All the enzyme-treated starches displayed a mixture of B and V-type diffraction patterns. The MA/PUL-MS showed higher V-type diffraction peak intensity as compared to other modified starches. Compared to the combination of commercial enzyme treatment, the combination of malt enzyme treatment led to higher apparent amylose contents (45.56%), RS content (53.93%) and thermal stability (302 °C), whereas it possessed lower solubility indices and predicted glycaemic index. The apparent viscosity and shear resistance of MA/PUL-MS were lower than that of AA/PUL-MS, whereas that of MA/PUL-MS was higher than that of BA/PUL-MS and BA/AA/PUL-MS. These findings would provide a theoretical and applicative basis to produce foods with lower GI in industrial production.
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Affiliation(s)
- Yifan Gui
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Xinyang Wei
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Na Yang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Li Guo
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China.
| | - Bo Cui
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China.
| | - Feixue Zou
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Lu Lu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Pengfei Liu
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Yishan Fang
- State Key Laboratory of Biobased Material and Green Papermaking, School of Food Sciences and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
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20
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Gaenssle ALO, van der Maarel MJEC, Jurak E. The influence of amylose content on the modification of starches by glycogen branching enzymes. Food Chem 2022; 393:133294. [PMID: 35653995 DOI: 10.1016/j.foodchem.2022.133294] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 05/10/2022] [Accepted: 05/21/2022] [Indexed: 11/04/2022]
Abstract
Glycogen branching enzymes (GBEs) have been used to generate new branches in starches for producing slowly digestible starches. The aim of this study was to expand the knowledge about the mode of action of these enzymes by identifying structural aspects of starchy substrates affecting the products generated by different GBEs. The structures obtained from incubating five GBEs (three from glycoside hydrolase family (GH) 13 and two from GH57) on five different substrates exhibited minor but statistically significant correlations between the amount of longer chains (degree of polymerization (DP) 9-24) of the product and both the amylose content and the degree of branching of the substrate (Pearson correlation coefficient of ≤-0.773 and ≥0.786, respectively). GH57 GBEs mainly generated large products with long branches (100-700 kDa and DP 11-16) whereas GH13 GBEs produced smaller products with shorter branches (6-150 kDa and DP 3-10).
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Affiliation(s)
- Aline L O Gaenssle
- Bioproduct Engineering, Engineering and Technology Institute Groningen, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.
| | - Marc J E C van der Maarel
- Bioproduct Engineering, Engineering and Technology Institute Groningen, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.
| | - Edita Jurak
- Bioproduct Engineering, Engineering and Technology Institute Groningen, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.
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21
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Li X, Wang Y, Mu S, Ji X, Zeng C, Yang D, Dai L, Duan C, Li D. Structure, retrogradation and digestibility of waxy corn starch modified by a GtfC enzyme from Geobacillus sp. 12AMOR1. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2021.101527] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Hong MG, Yoo SH, Lee BH. Effect of highly branched α-glucans synthesized by dual glycosyltransferases on the glucose release rate. Carbohydr Polym 2022; 278:119016. [PMID: 34973805 DOI: 10.1016/j.carbpol.2021.119016] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 12/18/2022]
Abstract
Increasing α-1,6 linkages in starch molecules generates a large amount of α-limit dextrins (α-LDx) during α-amylolysis, which decelerate the release of glucose at the intestinal α-glucosidase level. This study synthesized highly branched α-glucans from sucrose using Neisseria polysaccharea amylosucrase and Rhodothermus obamensis glycogen branching enzyme to enhance those of slowly digestible property. The synthesized α-glucans (Mw: 1.7-4.9 × 107 g mol-1) were mainly composed of α-1,4 linkages and large proportions of α-1,6 linkages (7.5%-9.9%). After treating the enzymatically synthesized α-glucans with the human α-amylase, the quantity of branched α-LDx (36.2%-46.7%) observed was higher than that for amylopectin (26.8%) and oyster glycogen (29.1%). When the synthetic α-glucans were hydrolyzed by mammalin α-glucosidases, the glucose generation rate decreased because the amount of embedded branched α-LDx increased. Therefore, the macro-sized branched α-glucans with high α-LDx has the potential to be used as slowly digestible material to attenuate postprandial glycemic response.
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Affiliation(s)
- Moon-Gi Hong
- Department of Food Science & Biotechnology, Gachon University, Seongnam 13120, Republic of Korea
| | - Sang-Ho Yoo
- Department of Food Science & Biotechnology and Carbohydrate Bioproduct Research Center, Sejong University, Seoul 05006, Republic of Korea.
| | - Byung-Hoo Lee
- Department of Food Science & Biotechnology, Gachon University, Seongnam 13120, Republic of Korea.
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23
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Zhong Y, Herburger K, Xu J, Kirkensgaard JJK, Khakimov B, Hansen AR, Blennow A. Ethanol pretreatment increases the efficiency of maltogenic α-amylase and branching enzyme to modify the structure of granular native maize starch. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107118] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Ji X, Zeng C, Yang D, Mu S, Shi Y, Huang Y, Lee BH, Li D, Li X. Addition of 1, 4-α-glucan branching enzyme during the preparation of raw dough reduces the retrogradation and increases the slowly digestible fraction of starch in cooked noodles. J Cereal Sci 2022. [DOI: 10.1016/j.jcs.2022.103431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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25
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Xia C, Zhong L, Wang J, Zhang L, Chen X, Ji H, Ma S, Dong W, Ye X, Huang Y, Li Z, Cui Z. Structural and digestion properties of potato starch modified using an efficient starch branching enzyme AqGBE. Int J Biol Macromol 2021; 184:551-557. [PMID: 34171255 DOI: 10.1016/j.ijbiomac.2021.06.135] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 05/24/2021] [Accepted: 06/20/2021] [Indexed: 11/25/2022]
Abstract
Modified potato starch with slower digestion may aid the development of new starch derivatives with improved nutritional values, and strategies to increase nutritional fractions such as resistant starch (RS) are desired. In this study, a correspondence between starch structure and enzymatic resistance was provided based on the efficient branching enzyme AqGBE, and modified starches with different amylose content (Control, 100%; PS1, 90%; PS2, 72%; PS3, 32%; PS4, 18%) were prepared. Through SEM observation, NMR and X-ray diffraction analyses, we identified that an increased proportion of α-1,6-linked branches in potato starch changes its state of granule into large pieces with crystallinity. Molecular weight and chain-length distribution analysis showed a decrease of molecular weight (from 1.1 × 106 to 1.1 × 105 g/mol) without an obvious change of chain-length distribution in PS1, while PS2-4 exhibited an increased proportion of DP 6-12 with a stable molecular weight distribution, indicating a distinct model of structural modification by AqGBE. The enhancement of peak viscosity was related to increased hydrophobic interactions and pieces state of PS1, while the contents of SDS and RS in PS1 increased by 37.7 and 49.4%, respectively. Our result provides an alternative way to increase the RS content of potato starch by branching modification.
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Affiliation(s)
- Chengyao Xia
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Lingli Zhong
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Juying Wang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Lei Zhang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Xiaopei Chen
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Hangyan Ji
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Shiyun Ma
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Xianfeng Ye
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yan Huang
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Zhoukun Li
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Zhongli Cui
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
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26
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Two 1,4-α-glucan branching enzymes successively rearrange glycosidic bonds: A novel synergistic approach for reducing starch digestibility. Carbohydr Polym 2021; 262:117968. [PMID: 33838833 DOI: 10.1016/j.carbpol.2021.117968] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/17/2021] [Accepted: 03/17/2021] [Indexed: 01/04/2023]
Abstract
Enzymatically rearranging α-1,4 and α-1,6 glycosidic bonds in starch is a green approach to regulating its digestibility. A two-step modification process successively catalyzed by 1,4-α-glucan branching enzymes (GBEs) from Rhodothermus obamensi STB05 (Ro-GBE) and Geobacillus thermoglucosidans STB02 (Gt-GBE) was investigated as a strategy to reduce the digestibility of corn starch. This dual GBE modification process caused a reduction of 25.8 % in rapidly digestible starch fraction in corn starch, which were more effective than single GBE-catalyzed modification with the same duration. Structural analysis indicated that the dual GBE modified product contained higher branching density, more abundant short branches, and shorter external chains than those in single GBE-modified product. These results demonstrated that a moderate Ro-GBE treatment prior to starch gelatinization caused several suitable alterations in starch molecules, which promoted the transglycosylation efficiency of the following Gt-GBE treatment. This dual GBE-catalyzed modification process offered an efficient strategy for regulating starch digestibility.
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27
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Zheng J, Huang S, Zhao R, Wang N, Kan J, Zhang F. Effect of four viscous soluble dietary fibers on the physicochemical, structural properties, and in vitro digestibility of rice starch: A comparison study. Food Chem 2021; 362:130181. [PMID: 34082291 DOI: 10.1016/j.foodchem.2021.130181] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 05/17/2021] [Accepted: 05/21/2021] [Indexed: 11/15/2022]
Abstract
The effect of carboxymethyl cellulose (CMC), high-methoxyl pectin (HMP), konjac glucomannan (KGM), and xanthan gum (XG) on the physicochemical, structural properties, and digestibility of rice starch were investigated and compared. The four viscous soluble dietary fibers (VSDFs) increased the viscosity, storage modulus and loss modulus while decreased the pasting temperature and gelatinization enthalpy. Moreover, XG produced the lowest peak viscosity and dynamic modulus compared with the other VSDFs. Furthermore, the degree of short-range ordered structure of starch with KGM increased from 0.8448 to 0.8716; and the relative crystallinity of starch with XG increased by 12%. An ordered and reunited network structure was observed in SEM. In addition, VSDF inhibited the digestibility of rice starch and significantly increased the resistant starch content. This study compared the effect of four VSDFs on the physicochemical, structural and digestion properties of rice starch to fully understand and develop their application to starchy foods.
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Affiliation(s)
- Jiong Zheng
- College of Food Science, Southwest University, Chongqing 400715, China; National Demonstration Center for Experimental Food Science and Technology Education (Southwest University), Chongqing 400715, China.
| | - Shan Huang
- College of Food Science, Southwest University, Chongqing 400715, China; National Demonstration Center for Experimental Food Science and Technology Education (Southwest University), Chongqing 400715, China
| | - Ruyue Zhao
- College of Food Science, Southwest University, Chongqing 400715, China; National Demonstration Center for Experimental Food Science and Technology Education (Southwest University), Chongqing 400715, China
| | - Nan Wang
- College of Food Science, Southwest University, Chongqing 400715, China; National Demonstration Center for Experimental Food Science and Technology Education (Southwest University), Chongqing 400715, China
| | - Jianquan Kan
- College of Food Science, Southwest University, Chongqing 400715, China; National Demonstration Center for Experimental Food Science and Technology Education (Southwest University), Chongqing 400715, China
| | - Fusheng Zhang
- College of Food Science, Southwest University, Chongqing 400715, China; National Demonstration Center for Experimental Food Science and Technology Education (Southwest University), Chongqing 400715, China
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Ye X, Liu W, Ma S, Chen X, Qiao Y, Zhao Y, Fan Q, Li X, Dong C, Fang X, Huan M, Han J, Huang Y, Cui Z, Li Z. Expression and characterization of 1,4-α-glucan branching enzyme from Microvirga sp. MC18 and its application in the preparation of slowly digestible starch. Protein Expr Purif 2021; 185:105898. [PMID: 33962003 DOI: 10.1016/j.pep.2021.105898] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 03/25/2021] [Accepted: 04/30/2021] [Indexed: 10/21/2022]
Abstract
Nutraceuticals containing modified starch with increased content of slowly-digestible starch (SDS) may reduce the prevalence of obesity, diabetes and cardiovascular diseases due to its slow digestion rate. Enzymatic methods for the preparation of modified starch have attracted increasing attention because of their low environmental impact, safety and specificity. In this study, the efficient glucan branching enzyme McGBE from Microvirga sp. MC18 was identified, and its relevant properties as well as its potential for industrial starch modification were evaluated. The purified McGBE exhibited the highest specificity for potato starch, with a maximal specific activity of 791.21 U/mg. A time-dependent increase in the content of α-1,6 linkages from 3.0 to 6.0% was observed in McGBE-modified potato starch. The proportion of shorter chains (degree of polymerization, DP < 13) increased from 29.2 to 63.29% after McGBE treatment, accompanied by a reduction of the medium length chains (DP 13-24) from 52.30 to 35.99% and longer chains (DP > 25) from 18.51 to 0.72%. The reduction of the storage modulus (G') and retrogradation enthalpy (ΔHr) of potato starch with increasing treatment time demonstrated that McGBE could inhibit the short- and long-term retrogradation of starch. Under the optimal conditions, the SDS content of McGBE-modified potato starch increased by 65.8% compared to native potato starch. These results suggest that McGBE has great application potential for the preparation of modified starch with higher SDS content that is resistant to retrogradation.
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Affiliation(s)
- Xianfeng Ye
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wei Liu
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shiyun Ma
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiaopei Chen
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yan Qiao
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuqiang Zhao
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qiwen Fan
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xu Li
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chaonan Dong
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiaodong Fang
- Guangzhou Hanyun Pharmaceutical Technology Co. Ltd., Guangzhou, 510000, China
| | - Minghui Huan
- Microbial Research Institute of Liaoning Province, Chaoyang, 122000, China
| | - Jian Han
- College of Agriculture, Xinjiang Agricultural University, XinJiang, 830052, China
| | - Yan Huang
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhongli Cui
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Zhoukun Li
- Key Laboratory of Agricultural Environmental Microbiology of Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, 210095, China.
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Xu T, Li X, Ji S, Zhong Y, Simal-Gandara J, Capanoglu E, Xiao J, Lu B. Starch modification with phenolics: methods, physicochemical property alteration, and mechanisms of glycaemic control. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.02.023] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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30
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31
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Chi C, Li X, Huang S, Chen L, Zhang Y, Li L, Miao S. Basic principles in starch multi-scale structuration to mitigate digestibility: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.01.024] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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32
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Kong H, Yu L, Gu Z, Li C, Cheng L, Hong Y, Li Z. An Innovative Short-Clustered Maltodextrin as Starch Substitute for Ameliorating Postprandial Glucose Homeostasis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:354-367. [PMID: 33350823 DOI: 10.1021/acs.jafc.0c02828] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Dietary starch is usually associated with elevated postprandial glycemic response. This is a potential risk factor of type 2 diabetes. Here, a 1,4-α-glucan branching enzyme (GBE) was employed to reassemble α-1,4 and α-1,6 glycosidic bonds in starch molecules. Structural characterization showed that GBE-catalyzed molecular reassembly created an innovative short-clustered maltodextrin (SCMD), which showed a dense internal framework along with shortened external chains. Such short-clustered molecules obstructed digestive enzymes attack and displayed dramatically reduced digestibility. Therefore, SCMD was served as a dietary starch substitute to improve postprandial glucose homeostasis. A 22.3% decrease in glycemic peak was therefore detected in ICR mice following SCMD intake (10.7 mmol/L), compared with that in the control (13.8 mmol/L). Moreover, an attenuated insulin response (40.5% lower than that in control) to SCMD intake was regarded suitable for diabetes management. These novel discoveries demonstrate that enzymatically rebuilding starch molecules may be a meaningful strategy for diabetes management.
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Affiliation(s)
- Haocun Kong
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Luxi Yu
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Zhengbiao Gu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
| | - Caiming Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
| | - Li Cheng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
| | - Yan Hong
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
| | - Zhaofeng Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, China
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33
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Gu Z, Chen B, Tian Y. Highly branched corn starch: Preparation, encapsulation, and release of ascorbic acid. Food Chem 2020; 343:128485. [PMID: 33172750 DOI: 10.1016/j.foodchem.2020.128485] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 10/20/2020] [Accepted: 10/23/2020] [Indexed: 10/23/2022]
Abstract
The aim of this study was to prepare a supporting carrier, namely highly branched corn starch (HBCS), and to investigate its encapsulation property with ascorbic acid (AA). High amylose corn starch was converted into HBCS via dual enzymatic modification by successively using α-amylase and glycogen branching enzyme. The results showed that the ratio of α-1, 6 linkage of HBCS increased by 1.93%, and a short-to-medium chain length distribution with a compact branched conformation was formed, which suggested HBCS could be a potential highly branched carrier. The HBCS-AA inclusion complex was formed as confirmed by differential scanning calorimetry. The release of AA conformed to the pseudo-Fickian diffusion mechanism and followed the first-order kinetics. Meanwhile, the photostability and thermostability of the embedded AA were moderately enhanced. These findings suggest that HBCS provides new insights into the preparation of wall materials and can be potentially used to deliver AA into food systems.
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Affiliation(s)
- Zixuan Gu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Bingcan Chen
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Yaoqi Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China.
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34
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Digestion kinetics of low, intermediate and highly branched maltodextrins produced from gelatinized starches with various microbial glycogen branching enzymes. Carbohydr Polym 2020; 247:116729. [PMID: 32829851 DOI: 10.1016/j.carbpol.2020.116729] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 06/15/2020] [Accepted: 07/03/2020] [Indexed: 12/19/2022]
Abstract
Twenty-four branched maltodextrins were synthesized from eight starches using three thermostable microbial glycogen branching enzymes. The maltodextrins have a degree of branching (DB) ranging from 5 % to 13 %. This range of products allows us to explore the effect of DB on the digestibility, which was quantified under conditions that mimic the digestion process in the small intestine. The rate and extent of digestibility were analyzed using the logarithm of the slope method, revealing that the branched maltodextrins consist of a rapidly and slowly digestible fraction. The amount of slowly digestible maltodextrin increases with an increasing DB. Surprisingly, above 10 % branching the fraction of slowly digestible maltodextrin remains constant. Nevertheless, the rate of digestion of the slowly digestible fraction was found to decline with increasing DB and shorter average internal chain length. These observations increase the understanding of the structural factors important for the digestion rate of branched maltodextrins.
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35
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Li D, Fei T, Wang Y, Zhao Y, Dai L, Fu X, Li X. A cold-active 1,4-α-glucan branching enzyme from Bifidobacterium longum reduces the retrogradation and enhances the slow digestibility of wheat starch. Food Chem 2020; 324:126855. [DOI: 10.1016/j.foodchem.2020.126855] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 03/27/2020] [Accepted: 04/17/2020] [Indexed: 12/21/2022]
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36
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Ashogbon AO, Akintayo ET, Oladebeye AO, Oluwafemi AD, Akinsola AF, Imanah OE. Developments in the isolation, composition, and physicochemical properties of legume starches. Crit Rev Food Sci Nutr 2020; 61:2938-2959. [DOI: 10.1080/10408398.2020.1791048] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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37
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Dai J, Ding M, Chen J, Qi J, Zhu Y, Li Z, Zhu L, Wang G. Optimization of gel mixture formulation based on weighted value using response surface methodology. CYTA - JOURNAL OF FOOD 2020. [DOI: 10.1080/19476337.2020.1789746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Jiajia Dai
- School of Public Health, Wannan Medical College, Wuhu, China
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Anhui Province Key Laboratory of Active Biological Macromolecules, Wuhu, China
| | - Mengru Ding
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Anhui Province Key Laboratory of Active Biological Macromolecules, Wuhu, China
- School of Pharmacy, Drug Research & Development Center, Wannan Medical College, Wuhu, China
| | - Jian Chen
- School of Public Health, Wannan Medical College, Wuhu, China
| | - Jun Qi
- College of Tea & Food Science and Technology, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei, China
| | - Yu Zhu
- School of Public Health, Wannan Medical College, Wuhu, China
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Anhui Province Key Laboratory of Active Biological Macromolecules, Wuhu, China
| | - Zhang Li
- School of Pharmacy, Drug Research & Development Center, Wannan Medical College, Wuhu, China
| | - Lei Zhu
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Anhui Province Key Laboratory of Active Biological Macromolecules, Wuhu, China
- School of Pharmacy, Drug Research & Development Center, Wannan Medical College, Wuhu, China
| | - Guodong Wang
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Anhui Province Key Laboratory of Active Biological Macromolecules, Wuhu, China
- School of Pharmacy, Drug Research & Development Center, Wannan Medical College, Wuhu, China
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38
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Li L, Su L, Hu F, Chen S, Wu J. Recombinant expression and characterization of the glycogen branching enzyme from Vibrio vulnificus and its application in starch modification. Int J Biol Macromol 2020; 155:987-994. [PMID: 31712143 DOI: 10.1016/j.ijbiomac.2019.11.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 10/31/2019] [Accepted: 11/07/2019] [Indexed: 01/14/2023]
Abstract
Resistant starch (RS) is helpful in controlling and preventing metabolic syndrome relevant diseases. However, the RS content of natural starch and modified starch produced by enzymatic method is generally low. To solve this problem, we selected the glycogen branching enzyme from Vibrio vulnificus (VvGBE) and investigated its application. Firstly, it was expressed in E. coli with the enzyme activity was 53.33 U/mL, and its optimum temperature and pH was 35 °C and 7.5, respectively. The half-life of VvGBE at 35 °C was 10 h, and the enzyme was most stable at pH 9.5. When we used the recombinant enzyme to treat corn starch, the content of RS increased by 19.41%, which was higher than that achieved with other enzymes. More specially, the conversion of slowly digestible starch to RS, which was only demonstrated in chemical modification, was accomplished. The fine structure of the modified starch was further investigated. Results showed that the number of short chains (DP < 13) increased to 90.58%, and the α-1,6 linkages ratio increased from 7.19% to 15.64%. The increase of short chains and α-1,6 linkages may contribute to high RS content. This study can provide a reference for the development of modified starch with lower digestibility.
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Affiliation(s)
- Lingling Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology, Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Lingqia Su
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology, Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Fan Hu
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology, Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Sheng Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology, Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Jing Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology, Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China.
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39
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Zhou S, Hong Y, Gu Z, Cheng L, Li Z, Li C. Effect of heat-moisture treatment on the in vitro digestibility and physicochemical properties of starch-hydrocolloid complexes. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105736] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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40
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Ban X, Li C, Zhang Y, Gu Z, Cheng L, Hong Y, Li Z. Importance of C-Terminal Extension in Thermophilic 1,4-α-Glucan Branching Enzyme from Geobacillus thermoglucosidans STB02. Appl Biochem Biotechnol 2019; 190:1010-1022. [PMID: 31654380 DOI: 10.1007/s12010-019-03150-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 09/13/2019] [Indexed: 11/27/2022]
Abstract
By sequence comparison, the majority of 1,4-α-glucan-branching enzymes (GBEs) consist of an N-terminal carbohydrate-binding domain, a TIM-barrel catalytic domain, and a C-terminal all-beta domain. Among these structures, the GBE from Geobacillus thermoglucosidans STB02 uniquely has a highly charged 26-amino-acid C-terminal extension, whose functional roles are the least understood. In this research, the functional significance of the C-terminal domain in GBE from G. thermoglucosidans STB02 and its extension were assessed using a C-terminal deletion analysis. Mutants lacking of more than 7 residues of the C-terminal all-beta domain could not be detected in lysates of their Escherichia coli expression strains, suggesting that an intact all-beta domain is required for structural stability. In contrast, truncation of the C-terminal extension resulted in greater stability and solubility than the wild type, as well as a lower sensitivity to the presence of added metal ions. Comparison of this mutant with the wild type suggests that the interaction of metal ions with the C-terminal extension influences performance of this enzyme.
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Affiliation(s)
- Xiaofeng Ban
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Caiming Li
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yuzhu Zhang
- USDA-ARS West Research Center, 800 Buchanan St, Albany, CA, 74710, USA
| | - Zhengbiao Gu
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Li Cheng
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yan Hong
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Zhaofeng Li
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, Jiangsu, China.
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41
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Comparison of the Structural Properties and Nutritional Fraction of Corn Starch Treated with Thermophilic GH13 and GH57 α-Glucan Branching Enzymes. Foods 2019; 8:foods8100452. [PMID: 31581739 PMCID: PMC6835866 DOI: 10.3390/foods8100452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/27/2019] [Accepted: 09/27/2019] [Indexed: 11/17/2022] Open
Abstract
Two thermophilic 1,4-α-glucan branching enzymes (GBEs), CbGBE from Caldicellulosiruptor bescii and PhGBE from Pyrococcus horikoshii, which belong to the glycoside hydrolase family 13 and 57 respectively, were cloned and expressed in Escherichia coli. Two GBEs were identified to have α-1,6 branching activity against various substrates, but substrate specificity was distinct. Starch was modified by two GBEs and their in vitro digestibility and structural properties were investigated. Short-branched A chains with a degree of polymerization (DP) of 6–12 increased with CbGBE-modified starch, increasing the proportion of slow digestible and resistant starch (RS) fractions. PhGBE-modified starch resulted in an increase in the RS fraction only by a slight increase in part of A chains (DP, 6–9). Compared to the proportion of control not treated with GBE, the proportion of α-1,6 linkages in CbGBE- and PhGBE-modified starch increased by 3.1 and 1.6 times. 13C cross polarization/magic angle sample spinning (CP/MAS) NMR and XRD pattern analysis described that GBE-modified starches reconstructed double helices but not the crystalline structure. Taken together, CbGBE and PhGBE showed distinct branching activities, resulting in different α-1,6 branching ratios and chain length distribution, and double helices amount of starch, ultimately affecting starch digestibility. Therefore, these GBEs can be used to produce customized starches with controlled digestion rates.
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42
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Lin D, Zhou W, Yang Z, Zhong Y, Xing B, Wu Z, Chen H, Wu D, Zhang Q, Qin W, Li S. Study on physicochemical properties, digestive properties and application of acetylated starch in noodles. Int J Biol Macromol 2019; 128:948-956. [DOI: 10.1016/j.ijbiomac.2019.01.176] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/12/2019] [Accepted: 01/28/2019] [Indexed: 12/17/2022]
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43
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Li Y, Li C, Gu Z, Cheng L, Hong Y, Li Z. Digestion properties of corn starch modified by α-D-glucan branching enzyme and cyclodextrin glycosyltransferase. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.11.025] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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44
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Li X, Pei J, Fei T, Zhao J, Wang Y, Li D. Production of slowly digestible corn starch using hyperthermophilic Staphylothermus marinus amylopullulanase in Bacillus subtilis. Food Chem 2019; 277:1-5. [DOI: 10.1016/j.foodchem.2018.10.092] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/18/2018] [Accepted: 10/19/2018] [Indexed: 12/12/2022]
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45
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Ren J, Li C, Gu Z, Cheng L, Hong Y, Li Z. Digestion rate of tapioca starch was lowed through molecular rearrangement catalyzed by 1,4-α-glucan branching enzyme. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2018.06.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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46
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Li X, Fei T, Wang Y, Zhao Y, Pan Y, Li D. Wheat Starch with Low Retrogradation Properties Produced by Modification of the GtfB Enzyme 4,6-α-Glucanotransferase from Streptococcus thermophilus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:3891-3898. [PMID: 29582651 DOI: 10.1021/acs.jafc.8b00550] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A GtfB enzyme 4,6-α-glucanotransferase from Streptococcus thermophilus lacking 761 N-terminal amino acids was heterologously expressed in Escherichia coli. Purified S. thermophilus GtfB showed transglycosylation activities toward starch, resulting in branch points of (α1→6)-glycosidic linkages plus linear chains of (α1→4)-glycosidic linkages. After wheat starch was modified at a rate of 0.1 g/mL by 1-4 U/g starch GtfB at pH 6.0 and 40 °C for 1 h, the weight-averaged molecular weight decreased from 1.70 × 107 g/mol to 1.21 × 106 to 3.41 × 106 g/mol, the amylose content decreased from 22.07 to 16.34-17.11%, and that of amylopectin long-branch chains decreased from 26.4 to 10.25-15.64% ( P < 0.05). After the GtfB-modified wheat starches were gelatinized and stored at 4 °C for 1-2 weeks, their endothermic enthalpies were significantly lower than that of the control sample ( P < 0.05), indicating low retrogradation rates.
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Affiliation(s)
- Xiaolei Li
- Engineering Technological Center of Mushroom Industry and School of Biological Science and Biotechnology , Minnan Normal University , 36 Xianqianzhi Street , Zhangzhou 363000 , Fujian , People's Republic of China
- Key Laboratory of Agro-products Processing Technology at Jilin Provincial Universities , Changchun University , 6543 Weixing Road , Changchun 130022 , Jilin , People's Republic of China
| | - Teng Fei
- Key Laboratory of Agro-products Processing Technology at Jilin Provincial Universities , Changchun University , 6543 Weixing Road , Changchun 130022 , Jilin , People's Republic of China
| | - Yong Wang
- Key Laboratory of Agro-products Processing Technology at Jilin Provincial Universities , Changchun University , 6543 Weixing Road , Changchun 130022 , Jilin , People's Republic of China
| | - Yakun Zhao
- Key Laboratory of Agro-products Processing Technology at Jilin Provincial Universities , Changchun University , 6543 Weixing Road , Changchun 130022 , Jilin , People's Republic of China
| | - Yutian Pan
- Engineering Technological Center of Mushroom Industry and School of Biological Science and Biotechnology , Minnan Normal University , 36 Xianqianzhi Street , Zhangzhou 363000 , Fujian , People's Republic of China
| | - Dan Li
- College of Food and Biological Engineering , Jimei University , 43 Yindou Road , Xiamen 361021 , Fujian , People's Republic of China
- Key Laboratory of Agro-products Processing Technology at Jilin Provincial Universities , Changchun University , 6543 Weixing Road , Changchun 130022 , Jilin , People's Republic of China
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