201
|
Pressure moisture treatment and hydro-thermal treatment of starch. Food Sci Biotechnol 2021; 31:261-274. [DOI: 10.1007/s10068-021-01016-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 11/17/2021] [Accepted: 11/23/2021] [Indexed: 10/19/2022] Open
|
202
|
Zhang L, Chen Y, Zeng J, Zang J, Liang Q, Tang D, Wang Z, Yin Z. Digestive and Physicochemical Properties of Small Granular Starch from Euryale ferox Seeds Growing in Yugan of China. FOOD BIOPHYS 2021. [DOI: 10.1007/s11483-021-09706-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
203
|
Understanding the granule, growth ring, blocklets, crystalline and molecular structure of normal and waxy wheat A- and B- starch granules. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.107034] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
204
|
Zha F, Rao J, Chen B. Plant-based food hydrogels: Constitutive characteristics, formation, and modulation. Curr Opin Colloid Interface Sci 2021. [DOI: 10.1016/j.cocis.2021.101505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
205
|
Effect of potassium carbonate on rheological properties of dough and its mechanism. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.112335] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
206
|
|
207
|
Xu J, Li Z, Zhong Y, Zhou Q, Lv Q, Chen L, Blennow A, Liu X. The effects of molecular fine structure on rice starch granule gelatinization dynamics as investigated by in situ small-angle X-ray scattering. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.107014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
208
|
Surface-charged starch nanocrystals from glutinous rice: Preparation, crystalline properties and cytotoxicity. Int J Biol Macromol 2021; 192:557-563. [PMID: 34653438 DOI: 10.1016/j.ijbiomac.2021.10.024] [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: 08/02/2021] [Revised: 09/29/2021] [Accepted: 10/03/2021] [Indexed: 11/22/2022]
Abstract
The high-amylopectin glutinous rice is used in this study for the preparation of starch nanocrystals (SNCs) with the acid hydrolysis and enzymatic treatment. The fabricated SNC is carried out the surface modifications by phosphorylation and cationization to produce the nanocrystals with the charged surface. Four kinds of SNCs are obtained with the different surface charges involving the varied negative charges, positive charge and no charge. The chemical structures, morphologies and crystalline properties of four SNCs were investigated, together with the effect of surface charges to their cytotoxicity for two cell lines RAW267.4 and CAL27 by the cell proliferation and cell migration assay. The sulfuric acid-hydrolyzed SNC and phosphorylated SNC have more ordered regions and therefore display the higher crystallinities than the enzymatic treated SNC. Four obtained SNCs all exhibited weak cytotoxicity, indicating their good biocompatibility in the potential biomedical application.
Collapse
|
209
|
Nagar CK, Dash SK, Rayaguru K, Pal US, Nedunchezhiyan M. Isolation, characterization, modification and uses of taro starch: A review. Int J Biol Macromol 2021; 192:574-589. [PMID: 34653440 DOI: 10.1016/j.ijbiomac.2021.10.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/03/2021] [Accepted: 10/06/2021] [Indexed: 10/20/2022]
Abstract
Taro is a major root crop utilized widely for diverse food and non-food applications. Taro corms are processed into various forms before consumption, which makes them digestible and palatable, extends the shelf life and reduces post-harvest losses. Taro corm contains starch as the major carbohydrate, accounting up to 70-80% of the whole dry matter. The starches obtained from different cultivars and sources significantly differ in physical, chemical, thermal, morphological, and functional properties, which can be explored for varied applications. Starch quality also controls the end-quality of food and industrial products. Several starch modification methods have been studied to improve its positive attributes and to eliminate deficiencies in its native characteristics. These modification methods, which can be categorised into physical, chemical and enzymatic, have proved to improve the characteristics and applications of starch. This review aims to compile the information about the chemical composition, characterization, isolation and modification methods, with an objective of its increased use in food or non-food industries. In addition, challenges and issues in the small-scale processing of taro are discussed. The information available in this review may help in a better understanding and utilization of taro starch.
Collapse
Affiliation(s)
- Chetan Kumar Nagar
- Department of Agricultural Processing & Food Engineering, College of Agricultural Engineering and Technology, OUAT, Bhubaneswar 751 003, India.
| | - Sanjaya Kumar Dash
- Department of Agricultural Processing & Food Engineering, College of Agricultural Engineering and Technology, OUAT, Bhubaneswar 751 003, India
| | - Kalpana Rayaguru
- Department of Agricultural Processing & Food Engineering, College of Agricultural Engineering and Technology, OUAT, Bhubaneswar 751 003, India
| | - Uma Sankar Pal
- Department of Agricultural Processing & Food Engineering, College of Agricultural Engineering and Technology, OUAT, Bhubaneswar 751 003, India
| | - Maniyam Nedunchezhiyan
- Regional Centre of ICAR-Central Tuber Crops Research Institute, Bhubaneswar 751 019, India
| |
Collapse
|
210
|
Xu H, Zhou J, Liu X, Yu J, Copeland L, Wang S. Methods for characterizing the structure of starch in relation to its applications: a comprehensive review. Crit Rev Food Sci Nutr 2021:1-18. [PMID: 34847797 DOI: 10.1080/10408398.2021.2007843] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Starch is a major part of the human diet and an important material for industrial utilization. The structure of starch granules is the subject of intensive research because it determines functionality, and hence suitability for specific applications. Starch granules are made up of a hierarchy of complex structural elements, from lamellae and amorphous regions to blocklets, growth rings and granules, which increase in scale from nanometers to microns. The complexity of these native structures changes with the processing of starch-rich ingredients into foods and other products. This review aims to provide a comprehensive review of analytical methods developed to characterize structure of starch granules, and their applications in analyzing the changes in starch structure as a result of processing, with particular consideration of the poorly understood short-range ordered structures in amorphous regions of granules.
Collapse
Affiliation(s)
- Hanbin Xu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, China.,College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, China
| | - Jiaping Zhou
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, China
| | - Xia Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, China.,College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, China
| | - Jinglin Yu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, China
| | - Les Copeland
- School of Life and Environmental Sciences, Sydney Institute of Agriculture, The University of Sydney, Sydney, New South Wales, Australia
| | - Shujun Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science & Technology, Tianjin, China.,College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, China
| |
Collapse
|
211
|
Zheng B, Guo X, Tang Y, Chen L, Xie F. Development changes in multi-scale structure and functional properties of waxy corn starch at different stages of kernel growth. Int J Biol Macromol 2021; 191:335-343. [PMID: 34560147 DOI: 10.1016/j.ijbiomac.2021.09.120] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 09/02/2021] [Accepted: 09/18/2021] [Indexed: 11/29/2022]
Abstract
Waxy corn starch is widely used in food and papermaking industries due to its unique properties. In this work, the structural and functional properties of starch isolated from waxy corn at different stages of kernel growth were investigated and their relationships were clarified. The results showed that with kernel growth, the surface of starch granules became smooth gradually, and the inner growth rings and the porous structure grew and became clear. Meanwhile, the weight-average molecular mass (Mw), root mean square radius (Rg), and average particle size increased while the amylose content decreased, which should account for the decreased pasting temperature (from 71.37 to 67.44 °C) and increased peak viscosity (1574.2 to 1883.1 cp) and breakdown value observed. Besides, the contents of slowly digestible starch (SDS) and resistant starch (RS) in waxy corn starch decreased significantly (from 44.01% to 40.88% and from 16.73% to 9.80%, respectively, p < 0.05) due to decreases in the double helix content, crystallinity, and structural order, and increases in the semi-crystalline lamellae thickness and the amorphous content. This research provides basic data for the rational utilization of waxy corn starch at different stages of kernel growth.
Collapse
Affiliation(s)
- Bo Zheng
- Ministry of Education Engineering Research Center of Starch & Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xinbo Guo
- Ministry of Education Engineering Research Center of Starch & Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yukuo Tang
- Ministry of Education Engineering Research Center of Starch & Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ling Chen
- Ministry of Education Engineering Research Center of Starch & Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Fengwei Xie
- International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom.
| |
Collapse
|
212
|
Rigg A, Champagne P, Cunningham MF. Polysaccharide-Based Nanoparticles as Pickering Emulsifiers in Emulsion Formulations and Heterogenous Polymerization Systems. Macromol Rapid Commun 2021; 43:e2100493. [PMID: 34841604 DOI: 10.1002/marc.202100493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/27/2021] [Indexed: 12/20/2022]
Abstract
Bio-based Pickering emulsifiers are a nontoxic alternative to surfactants in emulsion formulations and heterogenous polymerizations. Recent demand for biocompatible and sustainable formulations has accelerated academic interest in polysaccharide-based nanoparticles as Pickering emulsifiers. Despite the environmental advantages, the inherent hydrophilicity of polysaccharides and their nanoparticles limits efficiency and application range. Modification of the polysaccharide surface is often required in the development of ultrastable, functional, and water-in-oil (W/O) systems. Complex surface modification calls into question the sustainability of polysaccharide-based nanoparticles and is identified as a significant barrier to commercialization. This review summarizes the use of nanocelluloses, -starches, and -chitins as Pickering emulsifiers, highlights trends and best practices in surface modification, and provides recommendations to expedite commercialization.
Collapse
Affiliation(s)
- Amanda Rigg
- Department of Chemical Engineering, 19 Division Street, Queen's University, Kingston, ON, K7L 3N6, Canada
| | - Pascale Champagne
- Beaty Water Research Centre, Department of Civil Engineering, Union Street, Queen's University, Kingston, ON, K7L 3N6, Canada.,Institut National de la Recherche Scientifique (INRS), 490 rue de la Couronne, Quebec City, Quebec, G1K 9A9, Canada
| | - Michael F Cunningham
- Department of Chemical Engineering, 19 Division Street, Queen's University, Kingston, ON, K7L 3N6, Canada.,Department of Chemistry, 90 Bader Lane, Queen's University, Kingston, ON, K7L 3N6, Canada
| |
Collapse
|
213
|
Bürgy L, Eicke S, Kopp C, Jenny C, Lu KJ, Escrig S, Meibom A, Zeeman SC. Coalescence and directed anisotropic growth of starch granule initials in subdomains of Arabidopsis thaliana chloroplasts. Nat Commun 2021; 12:6944. [PMID: 34836943 PMCID: PMC8626487 DOI: 10.1038/s41467-021-27151-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 11/01/2021] [Indexed: 12/29/2022] Open
Abstract
Living cells orchestrate enzyme activities to produce myriads of biopolymers but cell-biological understanding of such processes is scarce. Starch, a plant biopolymer forming discrete, semi-crystalline granules within plastids, plays a central role in glucose storage, which is fundamental to life. Combining complementary imaging techniques and Arabidopsis genetics we reveal that, in chloroplasts, multiple starch granules initiate in stromal pockets between thylakoid membranes. These initials coalesce, then grow anisotropically to form lenticular granules. The major starch polymer, amylopectin, is synthesized at the granule surface, while the minor amylose component is deposited internally. The non-enzymatic domain of STARCH SYNTHASE 4, which controls the protein's localization, is required for anisotropic growth. These results present us with a conceptual framework for understanding the biosynthesis of this key nutrient.
Collapse
Affiliation(s)
- Léo Bürgy
- Institute of Molecular Plant Biology, ETH Zurich, 8092, Zurich, Switzerland
| | - Simona Eicke
- Institute of Molecular Plant Biology, ETH Zurich, 8092, Zurich, Switzerland
| | - Christophe Kopp
- Laboratory for Biological Geochemistry, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Camilla Jenny
- Institute of Molecular Plant Biology, ETH Zurich, 8092, Zurich, Switzerland
| | - Kuan Jen Lu
- Institute of Molecular Plant Biology, ETH Zurich, 8092, Zurich, Switzerland
| | - Stephane Escrig
- Laboratory for Biological Geochemistry, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Anders Meibom
- Laboratory for Biological Geochemistry, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- Centre for Advanced Surface Analysis, University of Lausanne, Lausanne, Switzerland
| | - Samuel C Zeeman
- Institute of Molecular Plant Biology, ETH Zurich, 8092, Zurich, Switzerland.
| |
Collapse
|
214
|
Fan M, Lian W, Li Y, Qian H, Zhang H, Rao Z, Wang L. Evaluation of the physicochemical properties and in vitro digestibility of the complex formed between rice starch and a novel pigment from Vaccinium bracteatum Thunb. leaf. Food Chem 2021; 374:131627. [PMID: 34823939 DOI: 10.1016/j.foodchem.2021.131627] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/23/2021] [Accepted: 11/14/2021] [Indexed: 11/26/2022]
Abstract
This study investigated the effect of Vaccinium bracteatum Thunb. leaf (VBTL) dark blue pigment on the physicochemical properties and in vitro digestibility of different rice starches. The results showed that glutinous rice starch (GRS) had a higher pigment loading capacity than indica rice starch (IRS) and japonica rice starch (JRS). Fourier transform infrared spectroscopy showed that these binary complexes between pigment and starch molecules bind through strong hydrogen bonds. All starch-pigment complexes displayed a lower gelatinization enthalpy than the controls. The addition of this pigment reduced the maximum starch in vitro digestion amount. Furthermore, the addition of pigment significantly increased the resistant starch and decreased the rapidly digestible starch in 'Wu mi', rice grains dyed by VBTL. This study provided important evidence of the digestion resistibility of VBTL dark blue pigment on 'Wu mi' to promote glycaemic regulation as a healthy cereal product.
Collapse
Affiliation(s)
- Mingcong Fan
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Weijia Lian
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Yan Li
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Haifeng Qian
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Hui Zhang
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Zhiming Rao
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Li Wang
- School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China.
| |
Collapse
|
215
|
Birania S, Kumar S, Kumar N, Attkan AK, Panghal A, Rohilla P, Kumar R. Advances in development of biodegradable food packaging material from agricultural and
agro‐industry
waste. J FOOD PROCESS ENG 2021. [DOI: 10.1111/jfpe.13930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Sapna Birania
- Department of Processing and Food Engineering College of Agricultural Engineering and Technology, CCS Haryana Agricultural University Hisar Haryana India
| | - Sunil Kumar
- AICRP on Post Harvest Engineering & Technology (Hisar Centre), Department of Processing and Food Engineering College of Agricultural Engineering and Technology, CCS Haryana Agricultural University Hisar Haryana India
| | - Nitin Kumar
- Department of Processing and Food Engineering College of Agricultural Engineering and Technology, CCS Haryana Agricultural University Hisar Haryana India
| | - Arun Kumar Attkan
- Department of Processing and Food Engineering College of Agricultural Engineering and Technology, CCS Haryana Agricultural University Hisar Haryana India
| | - Anil Panghal
- AICRP on Post Harvest Engineering & Technology (Hisar Centre), Department of Processing and Food Engineering College of Agricultural Engineering and Technology, CCS Haryana Agricultural University Hisar Haryana India
| | - Priyanka Rohilla
- Centre of Food Science and Technology, College of Agricultural Engineering and Technology, CCS Haryana Agricultural University Hisar Haryana India
| | - Ravi Kumar
- Department of Processing and Food Engineering College of Agricultural Engineering and Technology, CCS Haryana Agricultural University Hisar Haryana India
| |
Collapse
|
216
|
Gavgani HN, Fawaz R, Ehyaei N, Walls D, Pawlowski K, Fulgos R, Park S, Assar Z, Ghanbarpour A, Geiger JH. A structural explanation for the mechanism and specificity of plant branching enzymes I and IIb. J Biol Chem 2021; 298:101395. [PMID: 34762912 PMCID: PMC8695356 DOI: 10.1016/j.jbc.2021.101395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 11/03/2021] [Accepted: 11/05/2021] [Indexed: 11/29/2022] Open
Abstract
Branching enzymes (BEs) are essential in the biosynthesis of starch and glycogen and play critical roles in determining the fine structure of these polymers. The substrates of these BEs are long carbohydrate chains that interact with these enzymes via multiple binding sites on the enzyme’s surface. By controlling the branched-chain length distribution, BEs can mediate the physiological properties of starch and glycogen moieties; however, the mechanism and structural determinants of this specificity remain mysterious. In this study, we identify a large dodecaose binding surface on rice BE I (BEI) that reaches from the outside of the active site to the active site of the enzyme. Mutagenesis activity assays confirm the importance of this binding site in enzyme catalysis, from which we conclude that it is likely the acceptor chain binding site. Comparison of the structures of BE from Cyanothece and BE1 from rice allowed us to model the location of the donor-binding site. We also identified two loops that likely interact with the donor chain and whose sequences diverge between plant BE1, which tends to transfer longer chains, and BEIIb, which transfers exclusively much shorter chains. When the sequences of these loops were swapped with the BEIIb sequence, rice BE1 also became a short-chain transferring enzyme, demonstrating the key role these loops play in specificity. Taken together, these results provide a more complete picture of the structure, selectivity, and activity of BEs.
Collapse
Affiliation(s)
- Hadi Nayebi Gavgani
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
| | - Remie Fawaz
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
| | - Nona Ehyaei
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
| | - David Walls
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
| | - Kathryn Pawlowski
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
| | - Raoul Fulgos
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
| | - Sunghoon Park
- Department of Foodservice Management and Nutrition, College of Natural Sciences, Sangmyung University, Seoul, South Korea
| | - Zahra Assar
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
| | - Alireza Ghanbarpour
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA
| | - James H Geiger
- Department of Chemistry, Michigan State University, East Lansing, Michigan, USA.
| |
Collapse
|
217
|
Chen C, Li G, Zhu F. A novel starch from lotus (Nelumbo nucifera) seeds: Composition, structure, properties and modifications. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106899] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
218
|
Wang J, Jiang X, Zheng B, Zhang Y. Structural and physicochemical properties of lotus seed starch-chlorogenic acid complexes prepared by microwave irradiation. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2021; 58:4157-4166. [PMID: 34538900 PMCID: PMC8405777 DOI: 10.1007/s13197-020-04881-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/21/2020] [Accepted: 10/28/2020] [Indexed: 06/13/2023]
Abstract
Lotus seed (LS) has a high starch content and possesses many useful functional properties, which are mainly attributed to its phenolic compound content. The objective of this study was to investigate the effect of microwave irradiation (MW) treatment on the structural and physicochemical properties of a lotus seed starch-chlorogenic acid (CA) blend. MW treatment appeared to promote the formation of LS-CA complexes and the modified starch displayed more rougher structures than native starch. The particle size distribution of starch remained approximately constant when the microwave power was 200 W, but increased sharply with further increases in microwave power; a similar trend was observed in the swelling and solubility of starch. XRD and FT-IR spectra show that MW treatment degraded the ordered crystalline structure of starch, facilitating exposure of the starch chains originally buried in the crystalline and amorphous regions within the grains. During this treatment, CA interacted with starch molecules by hydrogen bonding and form a LS-CA complex, which inhibited the self-assembly process of starch chains. These findings demonstrated the potential use of MW treatment in controlling the storage and processing quality of lotus seed, or other starchy foods rich in polyphenols.
Collapse
Affiliation(s)
- Jianyi Wang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002 People’s Republic of China
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- China-Ireland International Cooperation Centre for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Xiangfu Jiang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002 People’s Republic of China
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- China-Ireland International Cooperation Centre for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Baodong Zheng
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002 People’s Republic of China
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- China-Ireland International Cooperation Centre for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Yi Zhang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002 People’s Republic of China
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
- China-Ireland International Cooperation Centre for Food Material Science and Structure Design, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| |
Collapse
|
219
|
|
220
|
Ang CL, Tha Goh KK, Lim K, Matia-Merino L. Rheological characterization of a physically-modified waxy potato starch: Investigation of its shear-thickening mechanism. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
221
|
Abstract
Nature has developed starch granules varying in size from less than 1 μm to more than 100 μm. The granule size is an important factor affecting the functional properties and the applicability of starch for food and non-food applications. Within the same botanical species, the range of starch granule size can be up to sevenfold. This review critically evaluated the biological and environmental factors affecting the size of starch granules, the methods for the separation of starch granules and the measurement of size distribution. Further, the structure at different length scales and properties of starch-based on the granule size is elucidated by specifying the typical applications of granules with varying sizes. An amylopectin cluster model showing the arrangement of amylopectin from inside toward the granule surface is proposed with the hypothesis that the steric hindrance for the growth of lamellar structure may limit the size of starch granules.
Collapse
Affiliation(s)
- Ming Li
- Laboratory of Cereal Processing and Quality Control, Institute of Food Science and Technology, CAAS/Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Venea Dara Daygon
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, St Lucia, Queensland, Australia
| | - Vicky Solah
- College of Science, Health, Engineering and Education, Murdoch University, Murdoch, Western Australia, Australia
| | - Sushil Dhital
- Department of Chemical and Biological Engineering, Monash University, Clayton, Victoria, Australia
| |
Collapse
|
222
|
Tian Y, Zhou M, Luo T, Zhu P, Cheng F, Zhang Y, Lin Y. A comparative investigation of gelatinized and regenerated starch composites reinforced by microfibrillated cellulose. Food Chem 2021; 373:131470. [PMID: 34740051 DOI: 10.1016/j.foodchem.2021.131470] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 10/17/2021] [Accepted: 10/22/2021] [Indexed: 12/31/2022]
Abstract
This research demonstrated a novel and ecofriendly method for producing regenerated starch (RS)/microfibrillated cellulose (MFC) composite films with a nearly 1.4-fold improvement in tensile strength than traditional gelatinized starch (GS) films. Pure starch was dissolved in 14 wt% urea/4 wt% sodium hydroxide (NaOH) solution at 0 °C. Then, RS films and their biocomposite films containing MFC were prepared by dialyzing and solution-casting method. Results showed that the tensile strength and elongation at break of RS increased by 44.8% and 82.4%, compared with that of GS film, respectively. Owing to the adequate dispersion, lower viscosity-average molecular weight, higher amylose content, lower crystallinity and smaller crystal grain size, RS/MFC composite films exhibited significantly improved mechanical properties. The novel strategy used in this study will be helpful in preparing regenerated starch materials with excellent mechanical properties and biodegradability as alternatives to petrochemical plastics for the development of sustainable materials.
Collapse
Affiliation(s)
- Yu Tian
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China; College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
| | - Mi Zhou
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
| | - Ting Luo
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - PuXin Zhu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Fei Cheng
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Yong Zhang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Yi Lin
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| |
Collapse
|
223
|
Characterization the structural property and degradation behavior of corn starch in KOH/thiourea aqueous solution. Carbohydr Polym 2021; 270:118363. [PMID: 34364608 DOI: 10.1016/j.carbpol.2021.118363] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/14/2021] [Accepted: 06/16/2021] [Indexed: 11/20/2022]
Abstract
Finding an efficient and eco-friendly solution for starch dissolution has attracted considerable attentions in recent years. This study investigated the structural characteristics, and degradation behavior of corn starch in KOH/thiourea aqueous solution by the comparison with DMSO/LiBr and 1-allyl-3-methylimidazolium chloride (AMIMCl). Results showed that KOH/thiourea solution was an effective solvent for corn starch dissolution (30 min with 97.01% solubility). X-ray diffraction (XRD) and 13C CP-MAS NMR spectroscopy revealed that native crystallinity of the corn starch was altered by all tested solvents, especially DMSO/LiBr and AMIMCl. Conversely, this new solvent did not change the primary molecular structure, chain-length distribution, or thermal stability of starch, compared with the native starch. Furthermore, KOH/thiourea solution was more suitable for measuring the molecular weight of corn starch, with a weight-average molecular weight (Mw) of 7.18 × 107 g/mol. Therefore, KOH/thiourea solution is a promising novel solvent for starch dissolution and structural exploration.
Collapse
|
224
|
Haq F, Yu H, Wang L, Teng L, Mehmood S, Haroon M, Bilal-Ul-Amin, Uddin MA, Fahad S, Shen D. Synthesis of succinylated carboxymethyl starches and their role as adsorbents for the removal of phenol. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04901-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
225
|
Zhao Y, Zhu X, Fang Y. Structure, properties and applications of kudzu starch. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
226
|
Recent advances in microstructure characterization of fried foods: Different frying techniques and process modeling. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
227
|
Structure and physicochemical properties of starch affected by dynamic pressure treatments: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.07.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
228
|
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]
|
229
|
Botticella E, Savatin DV, Sestili F. The Triple Jags of Dietary Fibers in Cereals: How Biotechnology Is Longing for High Fiber Grains. FRONTIERS IN PLANT SCIENCE 2021; 12:745579. [PMID: 34594354 PMCID: PMC8477015 DOI: 10.3389/fpls.2021.745579] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 08/18/2021] [Indexed: 05/03/2023]
Abstract
Cereals represent an important source of beneficial compounds for human health, such as macro- and micronutrients, vitamins, and bioactive molecules. Generally, the consumption of whole-grain products is associated with significant health benefits, due to the elevated amount of dietary fiber (DF). However, the consumption of whole-grain foods is still modest compared to more refined products. In this sense, it is worth focusing on the increase of DF fractions inside the inner compartment of the seed, the endosperm, which represents the main part of the derived flour. The main components of the grain fiber are arabinoxylan (AX), β-glucan (βG), and resistant starch (RS). These three components are differently distributed in grains, however, all of them are represented in the endosperm. AX and βG, classified as non-starch polysaccharides (NSP), are in cell walls, whereas, RS is in the endosperm, being a starch fraction. As the chemical structure of DFs influences their digestibility, the identification of key actors involved in their metabolism can pave the way to improve their function in human health. Here, we reviewed the main achievements of plant biotechnologies in DFs manipulation in cereals, highlighting new genetic targets to be exploited, and main issues to face to increase the potential of cereals in fighting malnutrition.
Collapse
Affiliation(s)
- Ermelinda Botticella
- Institute of Sciences of Food Production (ISPA), National Research Council (CNR), Lecce, Italy
| | | | - Francesco Sestili
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, Viterbo, Italy
| |
Collapse
|
230
|
Li XB, Huang XX, Zang CJ, Ma C, Chen KX, Zhao GD, Li Q, Li XY, Zhang WJ, Yang KL. Effects of steam-flaked grains on foals' growth and faecal microbiota. BMC Vet Res 2021; 17:293. [PMID: 34481494 PMCID: PMC8418754 DOI: 10.1186/s12917-021-02994-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 08/14/2021] [Indexed: 11/29/2022] Open
Abstract
Background There is little objective information concerning the effect of steam-flaked grains on foal’s growth performance and faecal microbiota. To determine the effects of steam-flaked grains on foal’s growth performance and faecal microbiota, faecal samples were collection from 18 foals which had been fed either corn, oat or barley diets over the 60 days of the experiment. Body weight and conformation measurements were collected. Next-generation sequencing of the V3 + V4 region of the 16 S rRNA gene was used to assess the microbial composition of faeces. Alpha diversity, Venn graph, Relative abundance and beta diversity are presented. Results There was a significantly higher larger increase in the body weight of those foals fed barley compared to either corn or oats. There were also significant changes in the Alpha diversity of the gut microbiota. The Shannon and Simpson indices were significantly higher in the barley fed group than those fed corn or oats. The Chao1 index was significantly higher in the oat fed group than the corn or barley fed groups. There were significant changes in the relative abundance of bacteria in the microbiota in terms of phylum, family and genus. The histogram of LDA value distribution showed that the 12 statistically different biomarkers of the bacteria were present. Tax4Fun function annotation clustering heat map showed that functional information was detected from 26 species of bacteria in faecal samples from the foals. Conclusions Differences by starch sources were found in overall growth of the foals and in the faecal microbiota if either supplementary corn, oat or barley was fed. Further studies are required to determine the potential impact of the changes in the microbiota on the health and development of foals fed cereal starch of different sources.
Collapse
Affiliation(s)
- Xiao Bin Li
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China
| | - Xin Xin Huang
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China
| | - Chang Jiang Zang
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China
| | - Chen Ma
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China
| | - Kai Xu Chen
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China
| | - Guo Dong Zhao
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China
| | - Qian Li
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China
| | - Xuan Yue Li
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China
| | - Wen Jie Zhang
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China
| | - Kai Lun Yang
- College of Animal Science, Xinjiang Key Laboratory of Herbivore Nutrition for Meat & Milk Production, Xinjiang Agricultural University, Xinjiang, 830052, Urumqi, China.
| |
Collapse
|
231
|
Hyaluronic acid nanofiber mats loaded with antimicrobial peptide towards wound dressing applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112319. [PMID: 34474870 DOI: 10.1016/j.msec.2021.112319] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/29/2021] [Accepted: 07/11/2021] [Indexed: 12/21/2022]
Abstract
Chronic wounds are highly susceptible to bacterial infections. Previously, we loaded a natural antimicrobial peptide of low cost and high safety, ε-polylysine (EPL), into the electrospun nanofiber mat of starch. The mat showed comparable antibacterial activity but markedly better biocompatibility than the commercial silver-containing dressing. To further optimize material property, in this paper, we use hyaluronic acid (HA) to replace starch. Results show that EPL-loaded HA nanofiber mats (OHA-EPL) have suitable water vapor permeability, good biocompatibility and broad-spectrum antibacterial property similar to that of EPL-loaded starch nanofiber mat (Starch-EPL). Differently, the content of EPL in OHA-EPL nanofiber mats increases from 19.2% to 27.9%, the tensile strength rises from 0.3 MPa to 0.6 MPa, the elongation grows from 62.0% to 130.0%, and the fiber degradation and EPL release accelerates. In addition, OHA-EPL can absorb up to 26.3-times exudate, which is much higher than Starch-EPL (15.1 times). Combined with the excellent biological activity of HA, OHA-EPL may produce better therapeutic effects than Starch-EPL.
Collapse
|
232
|
Cione E, Fazio A, Curcio R, Tucci P, Lauria G, Cappello AR, Dolce V. Resistant Starches and Non-Communicable Disease: A Focus on Mediterranean Diet. Foods 2021; 10:foods10092062. [PMID: 34574171 PMCID: PMC8471366 DOI: 10.3390/foods10092062] [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: 07/09/2021] [Revised: 08/25/2021] [Accepted: 08/27/2021] [Indexed: 01/12/2023] Open
Abstract
Resistant starch (RS) is the starch fraction that eludes digestion in the small intestine. RS is classified into five subtypes (RS1-RS5), some of which occur naturally in plant-derived foods, whereas the others may be produced by several processing conditions. The different RS subtypes are widely found in processed foods, but their physiological effects depend on their structural characteristics. In the present study, foods, nutrition and biochemistry are summarized in order to assess the type and content of RS in foods belonging to the Mediterranean Diet (MeD). Then, the benefits of RS consumption on health are discussed, focusing on their capability to enhance glycemic control. RS enters the large bowel intestine, where it is fermented by the microbiome leading to the synthesis of short-chain fatty acids as major end products, which in turn have systemic health effects besides the in situ one. It is hoped that this review will help to understand the pros of RS consumption as an ingredient of MeD food. Consequently, new future research directions could be explored for developing advanced dietary strategies to prevent non-communicable diseases, including colon cancer.
Collapse
|
233
|
Oliveira AR, Chaves Ribeiro AE, Gondim ÍC, Alves dos Santos E, Resende de Oliveira É, Mendes Coutinho GS, Soares Júnior MS, Caliari M. Isolation and characterization of yam (Dioscorea alata L.) starch from Brazil. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
234
|
Chung H, Lee JH, Shin H, Kwon J, Kim J. Minimization of Isoamylase Interference in Size‐Exclusion Chromatography of Debranched Starch Molecular Structure. STARCH-STARKE 2021. [DOI: 10.1002/star.202100147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hyung‐Jung Chung
- Division of Food and Nutrition Chonnam National University Gwangju 61186 Republic of Korea
| | - Ju Hun Lee
- Division of Food Science & Culinary arts Shinhan University Uijeongbu 11644 Republic of Korea
| | - Hye‐Young Shin
- Department of Food Science and Biotechnology Kangwon National University Chuncheon 24341 Republic of Korea
| | - Ji‐Seon Kwon
- Department of Food Science and Biotechnology Kangwon National University Chuncheon 24341 Republic of Korea
| | - Jong‐Yea Kim
- Department of Food Science and Biotechnology Kangwon National University Chuncheon 24341 Republic of Korea
- Institute of Fermentation and Brewing Kangwon National University Chuncheon 24341 Republic of Korea
| |
Collapse
|
235
|
Madadi R, Maljaee H, Serafim LS, Ventura SPM. Microalgae as Contributors to Produce Biopolymers. Mar Drugs 2021; 19:md19080466. [PMID: 34436305 PMCID: PMC8398342 DOI: 10.3390/md19080466] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/09/2021] [Accepted: 08/16/2021] [Indexed: 12/15/2022] Open
Abstract
Biopolymers are very favorable materials produced by living organisms, with interesting properties such as biodegradability, renewability, and biocompatibility. Biopolymers have been recently considered to compete with fossil-based polymeric materials, which rase several environmental concerns. Biobased plastics are receiving growing interest for many applications including electronics, medical devices, food packaging, and energy. Biopolymers can be produced from biological sources such as plants, animals, agricultural wastes, and microbes. Studies suggest that microalgae and cyanobacteria are two of the promising sources of polyhydroxyalkanoates (PHAs), cellulose, carbohydrates (particularly starch), and proteins, as the major components of microalgae (and of certain cyanobacteria) for producing bioplastics. This review aims to summarize the potential of microalgal PHAs, polysaccharides, and proteins for bioplastic production. The findings of this review give insight into current knowledge and future direction in microalgal-based bioplastic production considering a circular economy approach. The current review is divided into three main topics, namely (i) the analysis of the main types and properties of bioplastic monomers, blends, and composites; (ii) the cultivation process to optimize the microalgae growth and accumulation of important biobased compounds to produce bioplastics; and (iii) a critical analysis of the future perspectives on the field.
Collapse
Affiliation(s)
- Rozita Madadi
- Department of Agricultural Biotechnology, University College of Agriculture and Natural Resources, University of Tehran, Karaj 77871-31587, Iran;
| | - Hamid Maljaee
- CICECO—Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; (H.M.); (L.S.S.)
| | - Luísa S. Serafim
- CICECO—Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; (H.M.); (L.S.S.)
- Chemistry Department, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Sónia P. M. Ventura
- CICECO—Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; (H.M.); (L.S.S.)
- Chemistry Department, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- Correspondence:
| |
Collapse
|
236
|
Duijsens D, Gwala S, Pallares AP, Pälchen K, Hendrickx M, Grauwet T. How postharvest variables in the pulse value chain affect nutrient digestibility and bioaccessibility. Compr Rev Food Sci Food Saf 2021; 20:5067-5096. [PMID: 34402573 DOI: 10.1111/1541-4337.12826] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/22/2021] [Accepted: 07/14/2021] [Indexed: 01/12/2023]
Abstract
Pulses are increasingly being put forward as part of healthy diets because they are rich in protein, (slowly digestible) starch, dietary fiber, minerals, and vitamins. In pulses, nutrients are bioencapsulated by a cell wall, which mostly survives cooking followed by mechanical disintegration (e.g., mastication). In this review, we describe how different steps in the postharvest pulse value chain affect starch and protein digestion and the mineral bioaccessibility of pulses by influencing both their nutritional composition and structural integrity. Processing conditions that influence structural characteristics, and thus potentially the starch and protein digestive properties of (fresh and hard-to-cook [HTC]) pulses, have been reported in literature and are summarized in this review. The effect of thermal treatment on the pulse microstructure seems highly dependent on pulse type-specific cell wall properties and postharvest storage, which requires further investigation. In contrast to starch and protein digestion, the bioaccessibility of minerals is not dependent on the integrity of the pulse (cellular) tissue, but is affected by the presence of mineral antinutrients (chelators). Although pulses have a high overall mineral content, the presence of mineral antinutrients makes them rather poorly accessible for absorption. The negative effect of HTC on mineral bioaccessibility cannot be counteracted by thermal processing. This review also summarizes lessons learned on the use of pulses for the preparation of foods, from the traditional use of raw-milled pulse flours, to purified pulse ingredients (e.g., protein), to more innovative pulse ingredients in which cellular arrangement and bioencapsulation of macronutrients are (partially) preserved.
Collapse
Affiliation(s)
- Dorine Duijsens
- Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Leuven, Belgium
| | - Shannon Gwala
- Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Leuven, Belgium
| | - Andrea Pallares Pallares
- Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Leuven, Belgium
| | - Katharina Pälchen
- Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Leuven, Belgium
| | - Marc Hendrickx
- Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Leuven, Belgium
| | - Tara Grauwet
- Laboratory of Food Technology, Leuven Food Science and Nutrition Research Centre (LFoRCe), Department of Microbial and Molecular Systems (M2S), KU Leuven, Leuven, Belgium
| |
Collapse
|
237
|
Zhao Y, Li B, Li C, Xu Y, Luo Y, Liang D, Huang C. Comprehensive Review of Polysaccharide-Based Materials in Edible Packaging: A Sustainable Approach. Foods 2021; 10:1845. [PMID: 34441621 PMCID: PMC8392450 DOI: 10.3390/foods10081845] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/04/2021] [Accepted: 08/08/2021] [Indexed: 12/13/2022] Open
Abstract
Edible packaging is a sustainable product and technology that uses one kind of "food" (an edible material) to package another kind of food (a packaged product), and organically integrates food with packaging through ingenious material design. Polysaccharides are a reliable source of edible packaging materials with excellent renewable, biodegradable, and biocompatible properties, as well as antioxidant and antimicrobial activities. Using polysaccharide-based materials effectively reduces the dependence on petroleum resources, decreases the carbon footprint of the "product-packaging" system, and provides a "zero-emission" scheme. To date, they have been commercialized and developed rapidly in the food (e.g., fruits and vegetables, meat, nuts, confectioneries, and delicatessens, etc.) packaging industry. However, compared with petroleum-based polymers and plastics, polysaccharides still have limitations in film-forming, mechanical, barrier, and protective properties. Therefore, they need to be improved by reasonable material modifications (chemical or physical modification). This article comprehensively reviews recent research advances, hot issues, and trends of polysaccharide-based materials in edible packaging. Emphasis is given to fundamental compositions and properties, functional modifications, food-packaging applications, and safety risk assessment of polysaccharides (including cellulose, hemicellulose, starch, chitosan, and polysaccharide gums). Therefore, to provide a reference for the development of modern edible packaging.
Collapse
Affiliation(s)
- Yuan Zhao
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China; (Y.Z.); (B.L.); (C.L.); (Y.X.); (Y.L.); (C.H.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Bo Li
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China; (Y.Z.); (B.L.); (C.L.); (Y.X.); (Y.L.); (C.H.)
- Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, China
| | - Cuicui Li
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China; (Y.Z.); (B.L.); (C.L.); (Y.X.); (Y.L.); (C.H.)
| | - Yangfan Xu
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China; (Y.Z.); (B.L.); (C.L.); (Y.X.); (Y.L.); (C.H.)
| | - Yi Luo
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China; (Y.Z.); (B.L.); (C.L.); (Y.X.); (Y.L.); (C.H.)
| | - Dongwu Liang
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China; (Y.Z.); (B.L.); (C.L.); (Y.X.); (Y.L.); (C.H.)
| | - Chongxing Huang
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China; (Y.Z.); (B.L.); (C.L.); (Y.X.); (Y.L.); (C.H.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| |
Collapse
|
238
|
Jha P. Functional properties of starch-chitosan blend bionanocomposite films for food packaging: the influence of amylose-amylopectin ratios. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2021; 58:3368-3378. [PMID: 34366454 DOI: 10.1007/s13197-020-04908-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/04/2020] [Accepted: 11/13/2020] [Indexed: 11/26/2022]
Abstract
The present study is focused on the influence of amylose and amylopectin ratio on crystallinity, water barrier, mechanical, morphological and anti-fungal properties of starch-based bionanocomposite films. The different sources of starch containing various proportion of amylose and amylopectin (high amylose corn starch, 70:30; corn starch, 28:72; wheat starch, 25:75; and potato starch, 20:80) has been incorporated with chitosan (CH) and nanoclay (Na-MMT). Amylose and amylopectin ratio has regulated the orientation of molecular structure in the starch-based films. Experimental results have revealed that the prepared bionanocomposite films that of CS/CH/nanoclay has exhibited higher crystallinity and molecular miscibility among corn starch, with chitosan and nanoclay were confirmed by XRD. CS/CH/nanoclay has exhibited lowest water vapor permeability and highest tensile strength due to molecular space present in corn starch. Fourier transform infrared spectroscopy has confirmed the shift of amine peak to a higher wavenumber indicating a stronger hydrogen bond between starch and chitosan. Finally, the best bionanocomposite films were tested for food packaging applications. Low-density polyethylene has exhibited fungal growth on 5th day when packed with bread slices at 25 °C and 59% RH whereas CS/CH/nanoclay bionanocomposite film did not show the same for at least 20 days. CS/CH/nanoclay film could potentially be useful for active packaging in extending shelf life; maintaining its quality and safety of food products thus substituting synthetic plastic packaging materials.
Collapse
Affiliation(s)
- Pankaj Jha
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
| |
Collapse
|
239
|
Guedes JS, Lima DC, Castanha N, Matta Junior MD, Augusto PED. Physicochemical and functional properties of a novel starch from uvaia (
Eugenia pyriformis
) seed, a native fruit from Brazil. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15845] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jaqueline Souza Guedes
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Dâmaris Carvalho Lima
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Nanci Castanha
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Manoel Divino Matta Junior
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
| | - Pedro Esteves Duarte Augusto
- Department of Agri‐food Industry, Food and Nutrition (LAN) Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP) Piracicaba Brazil
- Food and Nutrition Research Center (NAPAN) University of São Paulo (USP) São Paulo Brazil
| |
Collapse
|
240
|
Zhang B, Qiao D, Zhao S, Lin Q, Wang J, Xie F. Starch-based food matrices containing protein: Recent understanding of morphology, structure, and properties. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.05.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
241
|
Cheng H, Chen L, McClements DJ, Yang T, Zhang Z, Ren F, Miao M, Tian Y, Jin Z. Starch-based biodegradable packaging materials: A review of their preparation, characterization and diverse applications in the food industry. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.05.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
242
|
Li G, Hemar Y, Zhu F. Relationships between supramolecular organization and amylopectin fine structure of quinoa starch. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106685] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
243
|
Schafranski K, Ito VC, Lacerda LG. Impacts and potential applications: A review of the modification of starches by heat-moisture treatment (HMT). Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106690] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
244
|
Antagonistic effects of amylopectin and amylose molecules on the starch inter- and intramolecular interactions during retrogradation. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111942] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
245
|
Oyeyinka SA, Oyedeji AB, Ogundele OM, Adebo OA, Njobeh PB, Kayitesi E. Infrared heating under optimized conditions enhanced the pasting and swelling behaviour of cowpea starch. Int J Biol Macromol 2021; 184:678-688. [PMID: 34174303 DOI: 10.1016/j.ijbiomac.2021.06.129] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 05/15/2021] [Accepted: 06/17/2021] [Indexed: 10/21/2022]
Abstract
Native starches are not suitable for industrial use and must be modified for improved functionality. In this study, the effect of moisture preconditioning and infrared heating time on physicochemical properties of cowpea starch was investigated using a two-factor central composite rotatable design. Factors (moisture levels:10-40 g/100 g starch and infrared heating time:10-60 min) with their corresponding α mid-point values resulted in 13 experimental runs. Selected functional and pasting properties were determined as response variables. Starch samples produced under optimized conditions were compared with corn starch and their physicochemical properties determined. Except for pasting temperature, cowpea starch prepared using the optimal conditions (moisture: 46.21 g/100 g starch, dry basis and heating time of 32.88 min) had higher functional and pasting properties compared with the native cowpea starch. Infrared heating significantly reduced the gelatinization temperatures of cowpea starch but did not significantly change that of the corn starch. The crystallinity and double-helical order structure of moisture conditioned cowpea starch also reduced after modification. Cowpea starch showed a bigger granule size, higher swelling power but lower water absorption capacities and pasting properties compared with the control. The infrared heating process is a novel and promising modification method for improving the swelling properties of starch.
Collapse
Affiliation(s)
- Samson A Oyeyinka
- Departement of Biotechnology and Food Technology, University of Johannesburg, Doornfontein, Johannesburg, South Africa.
| | - Ajibola B Oyedeji
- Departement of Biotechnology and Food Technology, University of Johannesburg, Doornfontein, Johannesburg, South Africa
| | - Opeolu M Ogundele
- Departement of Biotechnology and Food Technology, University of Johannesburg, Doornfontein, Johannesburg, South Africa
| | - Oluwafemi A Adebo
- Departement of Biotechnology and Food Technology, University of Johannesburg, Doornfontein, Johannesburg, South Africa
| | - Patrick B Njobeh
- Departement of Biotechnology and Food Technology, University of Johannesburg, Doornfontein, Johannesburg, South Africa
| | - Eugénie Kayitesi
- Department of Consumer and Food Sciences, University of Pretoria, South Africa.
| |
Collapse
|
246
|
Abstract
The major component of acorn is starch, which may amount up to 55% of the dry weight. Lack of systematic knowledge on acorn starch greatly hinders the further development of acorns as sustainable crops. This review aims to summarize the current knowledge of the isolation, chemical composition, physicochemical properties, and uses of acorn starches and to provide future research directions. The amylose content of the acorn starches is reported to vary in the range of 20–39%. Moisture content, lipid, ash, and protein contents of the acorn starches have been reported varying from 2.20 to 15.50%, 0.23 to 2.64%, 0.01 to 1.41%, and 0.01 to 6.7%, respectively. Thermal and pasting properties that have usually been determined using differential scanning calorimeter (DSC) and rapid viscoanalyzer (RVA) are also discussed in this article. Acorn starch has great potential for various food and nonfood applications due to the unique structural and functional features.
Collapse
|
247
|
Marine Polysaccharides as a Versatile Biomass for the Construction of Nano Drug Delivery Systems. Mar Drugs 2021; 19:md19060345. [PMID: 34208540 PMCID: PMC8234399 DOI: 10.3390/md19060345] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/08/2021] [Accepted: 06/11/2021] [Indexed: 12/12/2022] Open
Abstract
Marine biomass is a treasure trove of materials. Marine polysaccharides have the characteristics of biocompatibility, biodegradability, non-toxicity, low cost, and abundance. An enormous variety of polysaccharides can be extracted from marine organisms such as algae, crustaceans, and microorganisms. The most studied marine polysaccharides include chitin, chitosan, alginates, hyaluronic acid, fucoidan, carrageenan, agarose, and Ulva. Marine polysaccharides have a wide range of applications in the field of biomedical materials, such as drug delivery, tissue engineering, wound dressings, and sensors. The drug delivery system (DDS) can comprehensively control the distribution of drugs in the organism in space, time, and dosage, thereby increasing the utilization efficiency of drugs, reducing costs, and reducing toxic side effects. The nano-drug delivery system (NDDS), due to its small size, can function at the subcellular level in vivo. The marine polysaccharide-based DDS combines the advantages of polysaccharide materials and nanotechnology, and is suitable as a carrier for different pharmaceutical preparations. This review summarizes the advantages and drawbacks of using marine polysaccharides to construct the NDDS and describes the preparation methods and modification strategies of marine polysaccharide-based nanocarriers.
Collapse
|
248
|
Determination of starch crystallinity with the Fourier-transform terahertz spectrometer. Carbohydr Polym 2021; 262:117928. [PMID: 33838806 DOI: 10.1016/j.carbpol.2021.117928] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/22/2021] [Accepted: 03/07/2021] [Indexed: 11/22/2022]
Abstract
We measured the terahertz (THz) spectra of native, amorphous, and dried starches derived from corn and potato using the Fourier-transform (FT) system and compared these spectra to the X-ray diffraction (XRD) patterns. Both native corn and potato starches had seven absorption peaks in the terahertz regions, but five peaks were observed in the amorphous states. While spectral changes slightly occurred in corn starch even after drying, increase and decrease in the terahertz peak intensities were obtained in potato starch during drying. Similar changes in both starches during amorphization and drying were obtained in the X-ray diffraction patterns, and the correlations were found between terahertz peaks and the X-ray signals. Since the intensity of the peak at 9.0 THz was correlated with crystallinity obtained using an X-ray diffraction (r2 = 0.98), our data indicate that the Fourier-transform terahertz spectrometer can be a new analytical device to measure the starch crystallinity.
Collapse
|
249
|
Vici G, Perinelli DR, Camilletti D, Carotenuto F, Belli L, Polzonetti V. Nutritional Properties of Rice Varieties Commonly Consumed in Italy and Applicability in Gluten Free Diet. Foods 2021; 10:foods10061375. [PMID: 34198605 PMCID: PMC8232128 DOI: 10.3390/foods10061375] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/09/2021] [Accepted: 06/11/2021] [Indexed: 11/16/2022] Open
Abstract
Gluten-free diets are often characterized by an inadequate intake of nutrients and are generally monotonous for the limited number of products celiac patients can use. As rice is the most used cereal by celiac consumers, studying rice varieties nutritional characteristics is of interest to manage diet quality and variety. Proteins, total carbohydrates and amylose content of six rice varieties (Ribe, Vialone Nano, Carnaroli, Arborio, Basmati, and Fragrance) were analyzed. Analyses were performed in raw products and after boiling, stewing, and microwaving. A decrease of proteins and total carbohydrates amount was observed in cooked rice. The same was reported for amylose content with boiling showing the highest loss (average retained amylose 53%). Considering amylose percentage with respect to total carbohydrates, each variety showed either an increase or a decrease depending on cooking method. The highest values were obtained with stewing above all for Basmati rice and Arborio rice. However, exceptions can be underlined as Carnaroli rice, showing the highest percentage when boiled. In this context, nutritional characteristics of cooked rice varieties appear to be of great importance to increase specific nutritional knowledge to better manage gluten-free diets.
Collapse
Affiliation(s)
- Giorgia Vici
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032 Camerino, MC, Italy; (D.C.); (F.C.); (L.B.); (V.P.)
- Correspondence:
| | - Diego Romano Perinelli
- School of Pharmacy, University of Camerino, Via Gentile III da Varano, 62032 Camerino, MC, Italy;
| | - Dalia Camilletti
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032 Camerino, MC, Italy; (D.C.); (F.C.); (L.B.); (V.P.)
| | - Flora Carotenuto
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032 Camerino, MC, Italy; (D.C.); (F.C.); (L.B.); (V.P.)
| | - Luca Belli
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032 Camerino, MC, Italy; (D.C.); (F.C.); (L.B.); (V.P.)
| | - Valeria Polzonetti
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, 62032 Camerino, MC, Italy; (D.C.); (F.C.); (L.B.); (V.P.)
| |
Collapse
|
250
|
Jiang H, Xie X, Ban X, Gu Z, Cheng L, Hong Y, Li C, Li Z. Flexible Loop in Carbohydrate-Binding Module 48 Allosterically Modulates Substrate Binding of the 1,4-α-Glucan Branching Enzyme. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5755-5763. [PMID: 33988022 DOI: 10.1021/acs.jafc.1c00293] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The 1,4-α-glucan branching enzyme (GBE, EC 2.4.1.18) catalyzes the formation of α-1,6 branching points in starch and plays a key role in synthesis. To obtain mechanistic insights into the catalytic action of the enzyme, we first determined the crystal structure of GBE from Rhodothermus obamensis STB05 (RoGBE) to a resolution of 2.39 Å (PDB ID: 6JOY). The structure consists of three domains: domain A, domain C, and the carbohydrate-binding module 48 (CBM48). An engineered truncated mutant lacking the CBM48 domain (ΔCBM48) showed significantly reduced ligand binding affinity and enzyme activity. Comparison of the structures of RoGBE with other GBEs showed that CBM48 of RoGBE had a longer flexible loop. Truncation of the flexible loops resulted in reduced binding affinity and activity, thereby substantiating the importance of the optimum loop structure for catalysis. In essence, our study shows that CBM48, especially the flexible loop, plays an important role in substrate binding and enzymatic activity of RoGBE. Further, based on the structural analysis, kinetics, and activity assays on wild type and mutants, as well as homology modeling, we proposed a mechanistic model (called the "lid model") to illustrate how the flexible loop triggers substrate binding, ultimately leading to catalysis.
Collapse
Affiliation(s)
- Haimin Jiang
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
| | - Xiaofang Xie
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
| | - Xiaofeng Ban
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
| | - Zhengbiao Gu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, P. R. China
| | - Li Cheng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, P. R. China
| | - Yan Hong
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, P. R. China
| | - Caiming Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, P. R. China
| | - Zhaofeng Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
- Collaborative Innovation Center for Food Safety and Quality Control, Jiangnan University, Wuxi 214122, P. R. China
| |
Collapse
|