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An innovative konjac glucomannan/kappa-carrageenan mixed tensile gel

文献类型： 外文期刊

作者： Wu, Di 1 ; Yu, Simin 1 ; Liang, Hongshan 1 ; Eid, Mohamed 1 ; Li, Bin 1 ; Li, Jing 1 ; Mao, Jin 2 ;

作者机构： 1.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Peoples R China

2.Chinese Acad Agr Sci, Natl Reference Lab Agr Testing PR China, Key Lab Detect Mycotoxins,Oil Crops Res Inst, Minist Agr,Lab Qual & Safety Risk Assessment Oils, Wuhan 430062, Peoples R China

关键词： konjac glucomannan; deacetylation; κ ‐ carrageenan; maltodextrin

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.638； 五年影响因子：3.802 ）

ISSN： 0022-5142

年卷期：

页码：

收录情况： SCI

摘要： BACKGROUND Konjac glucomannan (KGM) showed a synergistic interaction with kappa-carrageenan (CAR), which led to the formation of a promising compound hydrocolloid gel in the food field (such as jelly). Nevertheless, the mixed gels formed by adding KGM to CAR still displayed defects in gel strength and syneresis, and would hardly meet the quality requirements of some gel foods. However, deacetylated KGM and maltodextrin (MD) have always been used in gel foods and affect their viscosity and rheological properties. RESULTS In our paper, different amounts of MD were first used to alter the textural properties, and the results showed that both tensile strength and elongation exhibited first an increasing and then a decreasing trend with the increasing MD proportion and achieved a maximum at a final maltodextrin proportion of 4 g kg(-1) in the KGM/CAR/MD system. Based on the above results, we further explored the effects of deacetylation degree of KGM on the gel properties of mixed gel system. The results revealed that, compared to the native KGM, the partial deacetylated KGM was capable of significantly improving the tensile strength and elongation of KGM/CAR mixed gel. CONCLUSION Our study found that the appropriate addition of MD (0.4%) and DKGM were able to alter the tensile properties of KGM/CAR mixed gel, with potential to meet the needs of consumers and further design innovative tensile gel products in the soft gel industry. (c) 2021 Society of Chemical Industry

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