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Xing B, Zou L, Liu J, Liang Y, Wang N, Zhang Z, Qiao J, Ren G, Zhang L, Qin P. The importance of starch chain-length distribution for in vitro digestion of ungelatinized and retrograded foxtail millet starch. Food Res Int 2024; 189:114563. [PMID: 38876595 DOI: 10.1016/j.foodres.2024.114563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 05/08/2024] [Accepted: 05/26/2024] [Indexed: 06/16/2024]
Abstract
The digestibility of ungelatinized, short-term retrograded and long-term retrograded starch from foxtail millet was investigated and correlated with starch chain length distributions (CLDs). Some variations in starch CLDs of different varieties were obtained. Huangjingu and Zhonggu 9 had higher average chain lengths of debranched starch and lower average chain length ratios of amylopectin and amylose than Dajinmiao and Jigu 168. Compared to ungelatinized starch, retrogradation significantly increased the estimated glycemic index (eGI), whereas significantly decreased the resistant starch (RS). In contrast, long-term retrograded starches have lower eGI (93.33-97.37) and higher RS (8.04-14.55%) than short-term retrograded starch. PCA and correlation analysis showed that amylopectin with higher amounts of long chains and longer long chains contributed to reduced digestibility in ungelatinized starch. Both amylose and amylopectin CLDs were important for the digestibility of retrograded starch. This study helps a better understanding of the interaction of starch CLDs and digestibility during retrogradation.
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Affiliation(s)
- Bao Xing
- School of Life Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China; Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Liang Zou
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Jingke Liu
- Institute of Biotechnology and Food Science, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050035, China
| | - Yongqiang Liang
- School of Life Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China; Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Nuo Wang
- School of Life Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China; Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Zhuo Zhang
- School of Life Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Jiawei Qiao
- School of Life Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China
| | - Guixing Ren
- School of Life Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China; Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Lizhen Zhang
- School of Life Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China.
| | - Peiyou Qin
- Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering & Technology Research Center of Coarse Cereal Industrialization, School of Food and Biological Engineering, Chengdu University, Chengdu, 610106, China.
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Fei W, Rong L, Qi X, Chen X, Luo Y, Wen H, Xie J. Effects of Premna microphylla turcz polysaccharide on rheological, gelling, and structural properties of mung bean starch and their interactions. Food Res Int 2024; 189:114561. [PMID: 38876594 DOI: 10.1016/j.foodres.2024.114561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/21/2024] [Accepted: 05/26/2024] [Indexed: 06/16/2024]
Abstract
The aim of this study was to investigate the effects of Premna microphylla turcz polysaccharide (PMP) on the rheological, gelling, and structural properties of mung bean starch (MBS) and their potential interaction mechanism. Results showed that the addition of PMP significantly improved the pasting properties, rheological properties, water holding capacity, and thermostability of MBS. The texture tests showed a decrease in hardness, gumminess and chewiness, indicating the retrogradation of MBS was inhibited. Scanning electron microscopy (SEM) suggested the MBS-PMP composite gels expressed a denser microstructure with obvious folds and tears. Moreover, the results of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and interaction force tests revealed the main forces between MBS and PMP were hydrogen bonds and hydrophobic interactions to form composite gels with great gelling properties. These results facilitate the practical application of MBS and PMP, and provide some references for understanding the interaction mechanism between starch and polysaccharide.
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Affiliation(s)
- Weiqi Fei
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Liyuan Rong
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Xin Qi
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Xianxiang Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Yi Luo
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Huiliang Wen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
| | - Jianhua Xie
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
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3
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Li Y, Zhu J, Liu C, Wang Y, Su C, Gao Y, Li Q, Yu X. Effect of pre-treatments and frying conditions on the formation of starch-lipid complex in potato starch chips during deep-frying process. Int J Biol Macromol 2024; 267:131355. [PMID: 38604433 DOI: 10.1016/j.ijbiomac.2024.131355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 03/18/2024] [Accepted: 04/01/2024] [Indexed: 04/13/2024]
Abstract
This study examined the influence of various pretreatment methods, frying durations, and temperatures, as well as the type of frying oil, on the formation and structure of starch-lipid complexes in fried potato chips. Potato starch was processed into dough, sliced, and subjected to deep frying following various pretreatments. Structural analysis showed that steaming as a pretreatment facilitated the generation of V-type starch-lipid complexes, whereas resistant starch type III (RS3) materialized in the desiccated samples instead of the anticipated complexes. The rate of starch-lipid complex formation initially surged but subsequently declined as treatment time increased. A reduction in treatment temperature from 190 °C to 170 °C was conducive to complex formation. Moreover, the maximum relative crystallinity (19.74 %) and ΔH value (7.76 J/g) were recorded for potato starch slices pretreated by steaming and frying in palm oil. Rapeseed oil, which is rich in unsaturated fatty acids (89.98 %), inhibits complex formation. The study concludes that pretreatment methods exert a substantial effect on the formation of starch-lipid complexes and that extended frying duration and elevated temperature may reduce this formation. Oils with longer-chain fatty acids and a lower degree of unsaturation were favorable for complex formation.
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Affiliation(s)
- Yancai Li
- Shaanxi Union Research Center of University and Enterprise for Functional Oil Engineering Technology, College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road Yangling, 712100, Shaanxi, China
| | - Jiabin Zhu
- Shaanxi Union Research Center of University and Enterprise for Functional Oil Engineering Technology, College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road Yangling, 712100, Shaanxi, China
| | - Changnian Liu
- Shaanxi Union Research Center of University and Enterprise for Functional Oil Engineering Technology, College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road Yangling, 712100, Shaanxi, China
| | - Yuanyuan Wang
- Shaanxi Union Research Center of University and Enterprise for Functional Oil Engineering Technology, College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road Yangling, 712100, Shaanxi, China
| | - Caihong Su
- Shaanxi Union Research Center of University and Enterprise for Functional Oil Engineering Technology, College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road Yangling, 712100, Shaanxi, China
| | - Yuan Gao
- Shaanxi Union Research Center of University and Enterprise for Functional Oil Engineering Technology, College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road Yangling, 712100, Shaanxi, China
| | - Qi Li
- Shaanxi Union Research Center of University and Enterprise for Functional Oil Engineering Technology, College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road Yangling, 712100, Shaanxi, China.
| | - Xiuzhu Yu
- Shaanxi Union Research Center of University and Enterprise for Functional Oil Engineering Technology, College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road Yangling, 712100, Shaanxi, China.
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Cui L, Wang X, Zhang J, Ai Z, Hu Y, Liu S, Tang P, Zou H, Li X, Wang Y, Nan B, Wang Y. Physicochemical properties and in vitro digestibility of ginseng starches under citric acid-autoclaving treatment. Int J Biol Macromol 2024; 265:131031. [PMID: 38518930 DOI: 10.1016/j.ijbiomac.2024.131031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
In this study, the effects of citric acid-autoclaving (CA-A) treatment on physicochemical and digestive properties of the native ginseng starches were investigated. The results showed that ginseng starch exhibited a B-type crystal structure with a low onset pasting temperature of 44.23 ± 0.80 °C, but high peak viscosity and setback viscosity of 5897.34 ± 53.72 cP and 692.00 ± 32.36 cP, respectively. The granular morphology, crystal and short-range ordered structure of ginseng starches were destroyed after CA-A treatment. The more short-chain starches were produced, resulting in the ginseng starches solubility increased. In addition, autoclaving, citric acid (CA) and CA-A treatment promoted polymerization and recrystallization of starch molecules, increased the proportion of amylopectin B1, and B3 chains, and improved molecular weight and resistant starch (RS) content of ginseng starches. The most significant multi-scale structural change was induced by CA-A treatment, which reduced the relative crystallinity of ginseng starch from 28.26 ± 0.24 % to 2.75 ± 0.08 %, and increased the content of RS to 54.30 ± 0.14 %. These findings provided a better understanding of the structure and properties of Chinese ginseng starches and offered new ideas for the deep processing of ginseng foods.
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Affiliation(s)
- Linlin Cui
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Xinzhu Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Junshun Zhang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Zhiyi Ai
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Yue Hu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Sitong Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Ping Tang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Hongyang Zou
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Xia Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China; National Processing Laboratory for Soybean Industry and Technology, Changchun, China; National Engineering Laboratory for Wheat and Corn Deep Processing, Changchun, China
| | - Yu Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China
| | - Bo Nan
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China; National Processing Laboratory for Soybean Industry and Technology, Changchun, China; National Engineering Laboratory for Wheat and Corn Deep Processing, Changchun, China.
| | - Yuhua Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, China; Jilin Province Innovation Center for Food Biological Manufacture, Jilin Agricultural University, Changchun, China; National Processing Laboratory for Soybean Industry and Technology, Changchun, China; National Engineering Laboratory for Wheat and Corn Deep Processing, Changchun, China.
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5
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McClements DJ. Designing healthier and more sustainable ultraprocessed foods. Compr Rev Food Sci Food Saf 2024; 23:e13331. [PMID: 38517032 DOI: 10.1111/1541-4337.13331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/20/2024] [Accepted: 03/09/2024] [Indexed: 03/23/2024]
Abstract
The food industry has been extremely successful in creating a broad range of delicious, affordable, convenient, and safe food and beverage products. However, many of these products are considered to be ultraprocessed foods (UPFs) that contain ingredients and are processed in a manner that may cause adverse health effects. This review article introduces the concept of UPFs and briefly discusses food products that fall into this category, including beverages, baked goods, snacks, confectionary, prepared meals, dressings, sauces, spreads, and processed meat and meat analogs. It then discusses correlations between consumption levels of UPFs and diet-related chronic diseases, such as obesity and diabetes. The different reasons for the proposed ability of UPFs to increase the risk of these chronic diseases are then critically assessed, including displacement of whole foods, high energy densities, missing phytochemicals, contamination with packaging chemicals, hyperpalatability, harmful additives, rapid ingestion and digestion, and toxic reaction products. Then, potential strategies to overcome the current problems with UPFs are presented, including reducing energy density, balancing nutritional profile, fortification, increasing satiety response, modulating mastication and digestion, reengineering food structure, and precision processing. The central argument is that it may be possible to reformulate and reengineer many UPFs to improve their healthiness and sustainability, although this still needs to be proved using rigorous scientific studies.
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Affiliation(s)
- David Julian McClements
- Department of Food Science & Bioengineering, Zhejiang Gongshang University, Hangzhou, Zhejiang, China
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts, USA
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6
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van der Sman R, Schenk E. Causal factors concerning the texture of French fries manufactured at industrial scale. Curr Res Food Sci 2024; 8:100706. [PMID: 38435276 PMCID: PMC10909613 DOI: 10.1016/j.crfs.2024.100706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/18/2024] [Accepted: 02/19/2024] [Indexed: 03/05/2024] Open
Abstract
In this paper, we review the physical/chemical phenomena, contributing to the final texture of French fries, as occurs in the whole industrial production chain of frozen par-fried fries. Our discussion is organized following a multiscale hierarchy of these causal factors, where we distinguish the molecular, cellular, microstructural, and product levels. Using the same multiscale framework, we also discuss currently available theoretical knowledge, and experimental methods probing the relevant physical/chemical phenomena. We have identified knowledge gaps, and experimental methods are evaluated in terms of the effort and value of their results. With our overviews, we hope to give promising research directions such to arrive at a multiscale model, encompassing all causal factors relevant to the final texture. This multiscale model is the ultimate tool to evaluate process innovations for effects on final textural quality, which can be balanced against the impacts on sustainability and economics.
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Affiliation(s)
- R.G.M. van der Sman
- Wageningen Food & Biobased Research, Wageningen University & Research, the Netherlands
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Zhang Y, Zeng J, Jie Z, Gao H, Su T, Li Z, Zhang Q, Liu F. Development and characterization of an active starch-based film as a chlorogenic acid delivery system. Int J Biol Macromol 2024; 255:128055. [PMID: 37956804 DOI: 10.1016/j.ijbiomac.2023.128055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 11/15/2023]
Abstract
Given its health benefits for the human body, chlorogenic acid (CA) offers promising applications in the food industry. However, the instability and low bioavailability of CA remain to be solved. In this paper, a starch-based film prepared by the homogenization and solution-casting method was used as an effective carrier to alleviate these problems. Homogenization (10-50 MPa) reduced the starch paste viscosity and its particle sizes from 21.64 to 7.68 μm, which promoted the starch recrystallization and induced chemical cross-links between starch-CA, as confirmed by the FTIR result with an appearance of a new CO peak at about 1716 cm-1. Accordingly, the rapidly digestible starch content of the film was reduced to 27.83 % and the CA encapsulation efficiency was increased to 99.08 % (from 65.88 %). As a result, the film system extended CA's release time beyond 4 h and significantly increased the heat-treated CA's antioxidant activity. Besides, the tensile strength and elastic modulus of the film were also improved to 6.29 MPa (from 1.63 MPa) and 160.98 MPa (from 12.02 MPa), respectively, by homogenization. In conclusion, the developed active starch-based film could be used as an edible film for the production of functional food or active food packaging.
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Affiliation(s)
- Yue Zhang
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China.
| | - Jingjing Zeng
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Zeng Jie
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Haiyan Gao
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Tongchao Su
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Ziheng Li
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Qi Zhang
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Fengsong Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
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Wu C, Dhital S, Mo Y, Fu X, Huang Q, Zhang B. Salt adopted in soaking solution controls the yield and starch digestion kinetics of intact pulse cotyledon cells. Carbohydr Polym 2023; 314:120949. [PMID: 37173051 DOI: 10.1016/j.carbpol.2023.120949] [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: 02/06/2023] [Revised: 03/27/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023]
Abstract
Intact cellular powders have gained attention as a functional ingredient due to their lower glycemic response and potential benefits in colon. The isolation of intact cells in the laboratory and pilot plant settings is mainly achieved through thermal treatment with or without the use of limited salts. However, the effects of salt type and concentration on cell porosity, and their impact on the enzymic hydrolysis of encapsulated macro-nutrients such as starch, have been overlooked. In this study, different salt-soaking solutions were used to isolate intact cotyledon cells from white kidney beans. The use of Na2CO3 and Na3PO4 soaking treatments, with high pH (11.5-12.7) and high amount of Na ion (0.1, 0.5 M), greatly improved the yield of cellular powder (49.6-55.5 %), due to the solubilization of pectin through β-elimination and ion exchange. Intact cell walls serve as a physical barrier, significantly reducing the susceptibility of cell to amylolysis when compared to white kidney bean flour and starch counterparts. However, the solubilization of pectin may facilitate enzyme access into the cells by enlarging cell wall permeability. These findings provide new insights into the processing optimization to improve the yield and nutritional value of intact pulse cotyledon cells as a functional food ingredient.
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Affiliation(s)
- Chumin Wu
- South China University of Technology, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China
| | - Sushil Dhital
- Monash University, Department of Chemical and Biological Engineering, Clayton Campus, VIC 3800, Australia
| | - Yongyi Mo
- South China University of Technology, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China
| | - Xiong Fu
- South China University of Technology, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health, Guangzhou 510640, China
| | - Qiang Huang
- South China University of Technology, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health, Guangzhou 510640, China
| | - Bin Zhang
- South China University of Technology, School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health, Guangzhou 510640, China.
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Yang S, Dhital S, Zhang MN, Wang J, Chen ZG. Structural, gelatinization, and rheological properties of heat-moisture treated potato starch with added salt and its application in potato starch noodles. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Variations in the Multilevel Structure, Gelatinization and Digestibility of Litchi Seed Starches from Different Varieties. Foods 2022; 11:foods11182821. [PMID: 36140947 PMCID: PMC9497979 DOI: 10.3390/foods11182821] [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: 07/29/2022] [Revised: 08/31/2022] [Accepted: 09/07/2022] [Indexed: 11/17/2022] Open
Abstract
Litchi seed starches from six varieties, as compared with maize starch, were studied for their multilevel structures, thermal and digestion properties to understand the distinct feather of each variety and provide guidance for their utilization in multi-industries. The results showed different varieties of litchi seed starch shared similar appearances with granules in oval shape and with a smooth surface. Starch granules of all the varieties exhibited typical bimodal size distributions consisting of small (<40 μm) and large granules (40−110 μm), although their relative proportions were largely dependent on variety. Huaizhi had the largest D50 value, whilst Guiwei showed the lowest. All the litchi seed starches had A-type crystalline with relative crystallinity varying from 20.67% (Huaizhi) to 26.76% (Guiwei). Similarly, the semi-crystalline structure varied apparently with variety. As to the chain-length distribution, only slight differences were observed among varieties, except Huaizhi displayed apparently higher amylose content (34.3%) and Guiwei showed the lowest (23.6%). Significant differences were also present in the gelatinization properties. Huaizhi seed starch showed significantly higher gelatinization temperatures and lower enthalpy change than the others. The digestibility of cooked litchi seed starches was only slightly different among varieties, suggesting variety is not the most critical factor regulating the digestibility of cooked litchi seed starch.
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