1
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Incorporation of κ-carrageenan improves the practical features of agar/konjac glucomannan/κ-carrageenan ternary system. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2022.07.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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2
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Mao Y, Shi J, Cai L, Hwang W, Shi YC. Microstructures of Starch Granules with Different Amylose Contents and Allomorphs as Revealed by Scattering Techniques. Biomacromolecules 2023; 24:1980-1993. [PMID: 36716424 DOI: 10.1021/acs.biomac.2c01240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In this study, as-is (ca. 12% moisture by mass) and hydrated (50% water by mass) granules of waxy potato (WP), waxy wheat (WW), waxy maize, normal maize, and high-amylose maize (HAM) starches were investigated by using small-angle neutron and X-ray scattering (SANS and SAXS), wide-angle X-ray scattering, and ultra-small-angle neutron scattering. The SANS and SAXS data were fitted using the two-phase stacking model of alternating crystalline and amorphous layers. The partial crystalline lamellar structures inside the growth rings of granules were analyzed based on the inter-lamellar distances, thicknesses of the crystalline lamellae and amorphous layers, thickness polydispersities, and water content in each type of layer. Despite having a longer average chain length of amylopectin, the WP and HAM starches, which had B-type allomorph, had a shorter inter-lamellar distance than the other three starches with A-type allomorph. The WP starch had the most uniform crystalline lamellar thickness. After hydration, the amorphous layers were expanded, resulting in an increase of inter-layer distance. The low-angle intensity upturn in SANS and SAXS was attributed to scattering from interfaces/surfaces of larger structures, such as growth rings and macroscopic granule surfaces. Data analysis methods based on model fitting and 1D correlation function were compared. The study emphasized─owing to inherent packing disorder inside granules─that a comprehensive analysis of different parameters was essential in correlating the microstructures with starch properties.
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Affiliation(s)
- Yimin Mao
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland20742, United States.,NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland20899, United States
| | - Jialiang Shi
- Department of Grain Science and Industry, Kansas State University, Manhattan, Kansas66506, United States
| | - Liming Cai
- Department of Grain Science and Industry, Kansas State University, Manhattan, Kansas66506, United States
| | - Wonseok Hwang
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Yong-Cheng Shi
- Department of Grain Science and Industry, Kansas State University, Manhattan, Kansas66506, United States
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3
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Chi C, He Y, Xiao X, Chen B, Zhou Y, Tan X, Ji Z, Zhang Y, Liu P. A novel very small granular starch from Chlorella sp. MBFJNU-17. Int J Biol Macromol 2023; 225:557-564. [PMID: 36395943 DOI: 10.1016/j.ijbiomac.2022.11.111] [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: 06/25/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022]
Abstract
Novel resources of very small granular starch are of great interests to food scientists. We previously found Chlorella sp. MBFJNU-17 contained small granular starch but whether the MBFJNU-17 was a novel resource of very small granular starch remained unresolved. This study isolated and characterized the starch from MBFJNU-17 in comparison with quinoa starch (a typical very small granular starch), and discussed whether the MBFJNU-17 could be a resource of very small granular starch. Results showed that chlorella starch displayed a smaller size (1024 nm) than quinoa starch did (1107 nm), suggesting MBFJNU-17 was a good resource of very small granular starch. Additionally, chlorella starch had less amylose, higher proportion of long amylopectin branches, more ordered structures, thinner amorphous lamellae, better paste thermostability, and slower enzymatic digestion than quinoa starch did. These findings indicated that Chlorella sp. MBFJNU-17 was a novel resource of very small granular starch with desirable thermostability and nutritional attributes.
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Affiliation(s)
- Chengdeng Chi
- College of Life Sciences, Fujian Normal University, Fuzhou 350117, China.
| | - Yongjin He
- College of Life Sciences, Fujian Normal University, Fuzhou 350117, China; Engineering Research Center of Industrial Microbiology, Ministry of Education, Fujian Normal University, Fuzhou 350117, China
| | - Xuehua Xiao
- College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Bilian Chen
- College of Life Sciences, Fujian Normal University, Fuzhou 350117, China; Engineering Research Center of Industrial Microbiology, Ministry of Education, Fujian Normal University, Fuzhou 350117, China
| | - Youcai Zhou
- College of Life Sciences, Fujian Normal University, Fuzhou 350117, China.
| | - Xiaoyan Tan
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China
| | - Zhili Ji
- Cereal Engineering, School of Food Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China
| | - Yiping Zhang
- Henan Engineering Laboratory for Bioconversion Technology of Functional Microbes, College of Life Science, Henan Normal University, Xinxiang 453007, China
| | - Pingying Liu
- College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
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4
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Kako Y, Llave Y, Sakai N, Fukuoka M. Computer simulation of microwave cooking of sweet potato. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.14121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yoshihiro Kako
- Department of Food Science and Technology Tokyo University of Marine Science and Technology Tokyo Japan
| | - Yvan Llave
- Department of Food Science and Technology Tokyo University of Marine Science and Technology Tokyo Japan
| | - Noboru Sakai
- Department of Food Science and Technology Tokyo University of Marine Science and Technology Tokyo Japan
| | - Mika Fukuoka
- Department of Food Science and Technology Tokyo University of Marine Science and Technology Tokyo Japan
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5
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Rearranged supramolecular structure of resistant starch with polymorphic microcrystals prepared in high-solid enzymatic system. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107215] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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6
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Luo S, Ma Q, Zhong Y, Jing J, Wei Z, Zhou W, Lu X, Tian Y, Zhang P. Editing of the starch branching enzyme gene SBE2 generates high-amylose storage roots in cassava. PLANT MOLECULAR BIOLOGY 2022; 108:429-442. [PMID: 34792751 DOI: 10.1007/s11103-021-01215-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
The production of high-amylose cassava through CRISPR/Cas9-mediated mutagenesis of the starch branching enzyme gene SBE2 was firstly achieved. High-amylose cassava (Manihot esculenta Crantz) is desirable for starch industrial applications and production of healthier processed food for human consumption. In this study, we report the production of high-amylose cassava through CRISPR/Cas9-mediated mutagenesis of the starch branching enzyme 2 (SBE2). Mutations in two targeted exons of SBE2 were identified in all regenerated plants; these mutations, which included nucleotide insertions, and short or long deletions in the SBE2 gene, were classified into eight mutant lines. Three mutants, M6, M7 and M8, with long fragment deletions in the second exon of SBE2 showed no accumulation of SBE2 protein. After harvest from the field, significantly higher amylose (up to 56% in apparent amylose content) and resistant starch (up to 35%) was observed in these mutants compared with the wild type, leading to darker blue coloration of starch granules after quick iodine staining and altered starch viscosity with a higher pasting temperature and peak time. Further 1H-NMR analysis revealed a significant reduction in the degree of starch branching, together with fewer short chains (degree of polymerization [DP] 15-25) and more long chains (DP>25 and especially DP>40) of amylopectin, which indicates that cassava SBE2 catalyzes short chain formation during amylopectin biosynthesis. Transition from A- to B-type crystallinity was also detected in the starches. Our study showed that CRISPR/Cas9-mediated mutagenesis of starch biosynthetic genes in cassava is an effective approach for generating novel varieties with valuable starch properties for food and industrial applications.
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Affiliation(s)
- Shu Luo
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Qiuxiang Ma
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
| | - Yingying Zhong
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- Shanghai Sanshu Biotechnology Co., LTD, Shanghai, 201210, China
| | - Jianling Jing
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Zusheng Wei
- Guangxi Subtropical Crops Research Institute, Nanning, 530001, China
| | - Wenzhi Zhou
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- Shanghai Sanshu Biotechnology Co., LTD, Shanghai, 201210, China
| | - Xinlu Lu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Yinong Tian
- Guangxi Subtropical Crops Research Institute, Nanning, 530001, China
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
- University of Chinese Academy of Sciences, Beijing, China.
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7
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Ji Z, Yu L, Duan Q, Miao S, Liu H, Shen W, Jin W. Morphology and Rheology of a Cool-Gel (Protein) Blended with a Thermo-Gel (Hydroxypropyl Methylcellulose). Foods 2022; 11:foods11010128. [PMID: 35010254 PMCID: PMC8750888 DOI: 10.3390/foods11010128] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/24/2021] [Accepted: 12/28/2021] [Indexed: 01/27/2023] Open
Abstract
This study investigates the morphological and rheological properties of blended gelatin (GA; a cooling-induced gel (cool-gel)) and hydroxypropyl methylcellulose (HPMC; a heating-induced gel (thermo-gel)) systems using a fluorescence microscope, small angle X-ray scattering (SAXS), and a rheometer. The results clearly indicate that the two biopolymers are immiscible and have low compatibility. Moreover, the rheological behavior and morphology of the GA/HPMC blends significantly depend on the blending ratio and concentration. Higher polysaccharide contents decrease the gelling temperature and improve the gel viscoelasticity character of GA/HPMC blended gels. The SAXS results reveal that the correlation length (ξ) of the blended gels decreases from 5.16 to 1.89 nm as the HPMC concentration increases from 1 to 6%, which suggests that much denser networks are formed in blended gels with higher HPMC concentrations. Overall, the data reported herein indicate that the gel properties of gelatin can be enhanced by blending with a heating-induced gel.
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Affiliation(s)
- Zhili Ji
- Cereal Engineering, School of Food Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China; (W.S.); (W.J.)
- Center for Polymer from Renewable Resources, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (L.Y.); (Q.D.); (H.L.)
- Correspondence:
| | - Long Yu
- Center for Polymer from Renewable Resources, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (L.Y.); (Q.D.); (H.L.)
- Sino-Singapore International Joint Research Institute, Guangzhou Knowledge City, Guangzhou 510663, China
| | - Qingfei Duan
- Center for Polymer from Renewable Resources, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (L.Y.); (Q.D.); (H.L.)
| | - Song Miao
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Co. Cork, Ireland;
| | - Hongsheng Liu
- Center for Polymer from Renewable Resources, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; (L.Y.); (Q.D.); (H.L.)
- Sino-Singapore International Joint Research Institute, Guangzhou Knowledge City, Guangzhou 510663, China
| | - Wangyang Shen
- Cereal Engineering, School of Food Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China; (W.S.); (W.J.)
| | - Weiping Jin
- Cereal Engineering, School of Food Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China; (W.S.); (W.J.)
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8
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Supermolecular structures of recrystallized starches with amylopectin side chains modified by amylosucrase to different chain lengths. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106830] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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9
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Engineering Properties of Sweet Potato Starch for Industrial Applications by Biotechnological Techniques including Genome Editing. Int J Mol Sci 2021; 22:ijms22179533. [PMID: 34502441 PMCID: PMC8431112 DOI: 10.3390/ijms22179533] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/20/2021] [Accepted: 08/29/2021] [Indexed: 11/25/2022] Open
Abstract
Sweet potato (Ipomoea batatas) is one of the largest food crops in the world. Due to its abundance of starch, sweet potato is a valuable ingredient in food derivatives, dietary supplements, and industrial raw materials. In addition, due to its ability to adapt to a wide range of harsh climate and soil conditions, sweet potato is a crop that copes well with the environmental stresses caused by climate change. However, due to the complexity of the sweet potato genome and the long breeding cycle, our ability to modify sweet potato starch is limited. In this review, we cover the recent development in sweet potato breeding, understanding of starch properties, and the progress in sweet potato genomics. We describe the applicational values of sweet potato starch in food, industrial products, and biofuel, in addition to the effects of starch properties in different industrial applications. We also explore the possibility of manipulating starch properties through biotechnological means, such as the CRISPR/Cas-based genome editing. The ability to target the genome with precision provides new opportunities for reducing breeding time, increasing yield, and optimizing the starch properties of sweet potatoes.
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10
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Teng C, Chen D, Wu G, Campanella OH. Non-invasive techniques to study starch structure and starchy products properties. Curr Opin Food Sci 2021. [DOI: 10.1016/j.cofs.2020.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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11
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Plasticized Starch/Agar Composite Films: Processing, Morphology, Structure, Mechanical Properties and Surface Hydrophilicity. COATINGS 2021. [DOI: 10.3390/coatings11030311] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Natural biopolymers, which are renewable, widely available, biodegradable, and biocompatible, have attracted huge interest in the development of biocomposite materials. Herein, formulation–property relationships for starch/agar composite films were investigated. First, rapid visco analysis was used to confirm the conditions needed for their gelation and to prepare filmogenic solutions. All the original crystalline and/or lamellar structures of starch and agar were destroyed, and films with cohesive and compact structures were formed, as shown by SEM, XRD, and SAXS. All the plasticized films were predominantly amorphous, and the polymorphs of the composite films were closer to that of the agar-only film. FTIR results suggest that the incorporation of agar restricted starch chain interaction and rearrangement. The addition of agar to starch increased both tensile strength and elongation at break, but the improvements were insignificant after the agar content was over 50 wt.%. Contact angle results indicate that compared with the other samples, the 4:6 (wt./wt.) starch/agar film was less hydrophilic. Thus, this work shows that agar dominates the structure and properties of starch/agar composites, and the best properties can be obtained with a certain starch/agar ratio. Such composite polysaccharide films with tailored mechanical properties and surface hydrophilicity could be useful in biodegradable packaging and biomedical applications (wound dressing and tissue scaffolding).
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12
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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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13
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Starch-protein interplay varies the multi-scale structures of starch undergoing thermal processing. Int J Biol Macromol 2021; 175:179-187. [PMID: 33549661 DOI: 10.1016/j.ijbiomac.2021.02.020] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/28/2021] [Accepted: 02/02/2021] [Indexed: 10/22/2022]
Abstract
This work concerns how starch-protein interplay affects the multi-scale structures (e.g., short- and long-range orders, nanoscale structure and morphology) of starch undergoing thermal processing (pasting) involving heating and cooling at high water content. An indica rice starch (IRS) and three proteins (whey protein isolate, WPI; soy protein isolate, SPI; casein, CS) were used. By inspecting rheological profiles of mixed systems before and after adding chemicals, IRS-WPI and IRS-CS showed mainly hydrophobic molecular interaction; and IRS-SPI exhibited hydrophobic, hydrogen bonding and electrostatic interactions. The RVA results revealed that, with starch and proteins as controls, starch-globular protein (WPI or SPI) interplay accelerated the swelling of starch granules (faster viscosity increase at initial pasting stage), and reduced the paste stability during heating (higher breakdown) and during cooling (higher setback); however, the starch-casein interactions resulted in opposed effects. Moreover, starch-protein interactions varied the multi-scale chain reassembly of starch into different structures during cooling. Observed could be fewer short- and long-range starch orders, and larger nonperiod structure (or colloidal clusters) on the nanoscale. On even larger scale to micron, IRS-globular protein molecules generated larger grids (with reduced number) in the gel network, and IRS-casein formed a more continuous gel network with less prominent tunnel-like features.
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Liu Z, Chen H, Zheng B, Xie F, Chen L. Understanding the structure and rheological properties of potato starch induced by hot-extrusion 3D printing. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105812] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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15
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Wang H, Ding J, Xiao N, Liu X, Zhang Y, Zhang H. Insights into the hierarchical structure and digestibility of starch in heat-moisture treated adlay seeds. Food Chem 2020; 318:126489. [DOI: 10.1016/j.foodchem.2020.126489] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 02/04/2020] [Accepted: 02/23/2020] [Indexed: 12/14/2022]
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16
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Wang L, Zhao S, Kong J, Li N, Qiao D, Zhang B, Xu Y, Jia C. Changing cooking mode can slow the starch digestion of colored brown rice: A view of starch structural changes during cooking. Int J Biol Macromol 2020; 155:226-232. [DOI: 10.1016/j.ijbiomac.2020.03.203] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/16/2020] [Accepted: 03/23/2020] [Indexed: 01/02/2023]
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18
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Qiao D, Wang Z, Cai C, Yin S, Qian H, Zhang B, Jiang F, Fei X. Tailoring Multi-Level Structural and Practical Features of Gelatin Films by Varying Konjac Glucomannan Content and Drying Temperature. Polymers (Basel) 2020; 12:polym12020385. [PMID: 32046354 PMCID: PMC7077460 DOI: 10.3390/polym12020385] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 01/25/2020] [Accepted: 02/03/2020] [Indexed: 11/18/2022] Open
Abstract
Here, we tailored the multi-level structural and practical (mechanical/hydrophilic) features of gelatin films by varying the konjac glucomannan (KGM) content and the film-forming temperatures (25 and 40 °C). The addition of KGM apparently improved the mechanical properties and properly increased the hydrophilicity. With the lower temperature (25 °C), the increase in KGM reduced the gelatin crystallites of films, with detectable KGM–gelatin interactions, nanostructures, and micron-scale cracks. These structural features, with increased KGM and negligibly-occurred derivatizations, caused initially an insignificant decrease and then an increase in the strength, with a generally-increased elongation. The higher temperature (40 °C) could reduce the strength and slightly increase the elongation, related to the reduced crystallites of especially gelatin. With this higher temperature, the increase in KGM concurrently increased the strength and the elongation, mainly associated with the increased KGM and crystallites. Additionally, the increase in KGM made the film more hydrophilic; the multi-scale structural changes of films did not dominantly affect the changing trend of hydrophilicity.
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Affiliation(s)
- Dongling Qiao
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Zhong Wang
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Chi Cai
- Sichuan Sanlian New Materials CO., LTD., Chengdu 610041, China
| | - Song Yin
- Sichuan Sanlian New Materials CO., LTD., Chengdu 610041, China
| | - Hong Qian
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Binjia Zhang
- Group for Cereals and Oils Processing, College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China
- Correspondence: (B.Z.); (X.F.)
| | - Fatang Jiang
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
- Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Xiang Fei
- Sichuan Sanlian New Materials CO., LTD., Chengdu 610041, China
- Correspondence: (B.Z.); (X.F.)
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19
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Li N, Guo Y, Zhao S, Kong J, Qiao D, Lin L, Lin Q, Zhang B. Amylose content and molecular-order stability synergistically affect the digestion rate of indica rice starches. Int J Biol Macromol 2020; 144:373-379. [DOI: 10.1016/j.ijbiomac.2019.12.095] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 12/05/2019] [Accepted: 12/12/2019] [Indexed: 01/20/2023]
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20
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Qiao D, Tu W, Zhong L, Wang Z, Zhang B, Jiang F. Microstructure and Mechanical/Hydrophilic Features of Agar-Based Films Incorporated with Konjac Glucomannan. Polymers (Basel) 2019; 11:polym11121952. [PMID: 31783690 PMCID: PMC6960638 DOI: 10.3390/polym11121952] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 11/17/2019] [Accepted: 11/19/2019] [Indexed: 01/26/2023] Open
Abstract
Different characterization methods spanning length scales from molecular to micron scale were applied to inspect the microstructures and mechanical/hydrophilic features of agar/konjac glucomannan (KGM) films prepared under different drying temperatures (40 and 60 °C). Note that the lower preparation temperature (40 °C) could increase the strength and elongation of agar/KGM films at high KGM levels (18:82 wt/wt KGM-agar, or higher). This was related to the variations in the film multi-scale structures with the increment of KGM content: the reduced crystallinity, the increased perfection of nanoscale orders at some KGM amounts, and the negligibly-changed morphology and molecular chemical structure under 40 °C preparation temperature. These structural changes initially decreased the film tensile strength, and subsequently increased the film strength and elongation with increasing KGM content. Moreover, under the higher drying temperature (60 °C), the increased KGM content could concurrently reduce the strength and elongation for the films, associated with probable phase separations on nano and smaller scales. In addition, the increased KGM amount tended to make the film more hydrophilic, whereas the changes in the film structures did not dominantly affect the changing trend of hydrophilicity.
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Affiliation(s)
- Dongling Qiao
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, Hubei, China; (D.Q.); (W.T.); (Z.W.)
| | - Wenyao Tu
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, Hubei, China; (D.Q.); (W.T.); (Z.W.)
| | - Lei Zhong
- Department of Chemical Engineering, Guangxi Key Laboratory Cultivation Base for Polysaccharide Materials and Modifications, Guangxi University for Nationalities, Nanning 530008, Guangxi, China;
| | - Zhong Wang
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, Hubei, China; (D.Q.); (W.T.); (Z.W.)
| | - Binjia Zhang
- Group for Cereals and Oils Processing, College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, Hubei, China
- Correspondence: (B.Z.); (F.J.)
| | - Fatang Jiang
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, Hubei, China; (D.Q.); (W.T.); (Z.W.)
- Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
- Correspondence: (B.Z.); (F.J.)
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21
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Qiao D, Wang Z, Li H, Zhang B, Pu H, Jiang F, Zhao S. Supramolecular and molecular structures of potato starches and their digestion features. Int J Biol Macromol 2019; 152:939-947. [PMID: 31759009 DOI: 10.1016/j.ijbiomac.2019.10.214] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 10/04/2019] [Accepted: 10/24/2019] [Indexed: 11/29/2022]
Abstract
This work inspects the supramolecular/molecular structures and digestion rate of potato starches (BEM, C7H, CP2 and CP4) as affected by starch biosynthetic enzymes. Among the starches, CP2 had a lower digestion rate with a higher paste heating stability. Regarding this, predominantly enzyme-sets (i) and (ii) were revealed to produce amylopectin chains. For CP2, the reduced activity ratio of starch-branching enzymes to soluble starch synthases allowed more long amylopectin chains (polymerization degree ≥ 34). Such molecular features tended to increase the crystallites and thicken the lamellae. With similar surface morphology and amylose content, the bulk density of chain packing in CP2 supramolecular structures could be increased. Then, there were an increase in the resistance of starch structures to hydrothermal effects, and a reduction in the enzyme hydrolysis rate. Also, the increased long amylopectin chains played roles in increasing the paste stability during heating with shearing and in reducing the digestion rate.
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Affiliation(s)
- Dongling Qiao
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Zhong Wang
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Hao Li
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Binjia Zhang
- Group for Cereals and Oils Processing, College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China.
| | - Huayin Pu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Fatang Jiang
- Glyn O. Phillips Hydrocolloid Research Centre at HBUT, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Siming Zhao
- Group for Cereals and Oils Processing, College of Food Science and Technology, Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China
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Wang H, Wu Y, Zhang Y, Yang J, Fan W, Zhang H, Zhao S, Yuan L, Zhang P. CRISPR/Cas9-Based Mutagenesis of Starch Biosynthetic Genes in Sweet Potato (Ipomoea Batatas) for the Improvement of Starch Quality. Int J Mol Sci 2019; 20:E4702. [PMID: 31547486 PMCID: PMC6801948 DOI: 10.3390/ijms20194702] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/12/2019] [Accepted: 09/18/2019] [Indexed: 12/13/2022] Open
Abstract
CRISPR/Cas9-mediated genome editing is a powerful technology that has been used for the genetic modification of a number of crop species. In order to evaluate the efficacy of CRISPR/Cas9 technology in the root crop, sweet potato (Ipomoea batatas), two starch biosynthetic pathway genes, IbGBSSI (encoding granule-bound starch synthase I), and IbSBEII (encoding starch branching enzyme II), were targeted in the starch-type cultivar Xushu22 and carotenoid-rich cultivar Taizhong6. I. batatas was transformed using a binary vector, in which the Cas9 gene is driven by the Arabidopsis AtUBQ promoter and the guide RNA is controlled by the Arabidopsis AtU6 promoter. A total of 72 Xushu22 and 35 Taizhong6 transgenic lines were generated and analyzed for mutations. The mutation efficiency was 62-92% with multi-allelic mutations in both cultivars. Most of the mutations were nucleotide substitutions that lead to amino acid changes and, less frequently, stop codons. In addition, short nucleotide insertions or deletions were also found in both IbGBSSI and IbSBEII. Furthermore, a 2658 bp deletion was found in one IbSBEII transgenic line. The total starch contents were not significantly changed in IbGBSSI- and IbSBEII-knockout transgenic lines compared to the wild-type control. However, in the allopolyploid sweet potato, the IbGBSSI-knockout reduced, while the IbSBEII-knockout increased, the amylose percentage. Our results demonstrate that CRISPR/Cas9 technology is an effective tool for the improvement of starch qualities in sweet potato and breeding of polyploid root crops.
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Affiliation(s)
- Hongxia Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Science, Shanghai 200032, China.
- Department of Plant and Soil Sciences and Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY 40546, USA.
| | - Yinliang Wu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Science, Shanghai 200032, China.
- Shanghai Sanshu Biotechnology Co., LTD. Shanghai 201210, China.
| | - Yandi Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Science, Shanghai 200032, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Jun Yang
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Plant Science Research Center, Chinese Academy of Science, Shanghai Chenshan Botanical Garden, Shanghai 201602, China.
| | - Weijuan Fan
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Plant Science Research Center, Chinese Academy of Science, Shanghai Chenshan Botanical Garden, Shanghai 201602, China.
| | - Hui Zhang
- Shanghai Center for Plant Stress Biology, Chinese Academy of Sciences, Shanghai 201602, China.
| | - Shanshan Zhao
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Plant Science Research Center, Chinese Academy of Science, Shanghai Chenshan Botanical Garden, Shanghai 201602, China.
| | - Ling Yuan
- Department of Plant and Soil Sciences and Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY 40546, USA.
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Science, Shanghai 200032, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
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