"Physical, chemical, and rheological properties of konjac glucomannan phosphate ester"

作者全名："Deng, Liling; Peng, Yongbo; Li, Yan; Zhong, Geng; Liu, Dan; Zhu, Zhaojing"

作者地址："[Deng, Liling; Li, Yan; Zhu, Zhaojing] Chongqing Med & Pharmaceut Coll, Chongqing Engn Res Ctr Pharmaceut Sci, Chongqing Key Lab High Act Tradit Chinese Drug Del, Chongqing 401331, Peoples R China; [Deng, Liling; Peng, Yongbo] Chongqing Med Univ, Coll Pharm, Key Lab Biochem & Mol Pharmacol, Chongqing Key Lab Pharmaceut Metab Res, Chongqing 400016, Peoples R China; [Zhong, Geng; Liu, Dan] Southwest Univ, Coll Food Sci, Chongqing 400715, Peoples R China"

通信作者："Zhu, ZJ (通讯作者)，Chongqing Med & Pharmaceut Coll, Chongqing Engn Res Ctr Pharmaceut Sci, Chongqing Key Lab High Act Tradit Chinese Drug Del, Chongqing 401331, Peoples R China.; Peng, YB (通讯作者)，Chongqing Med Univ, Coll Pharm, Key Lab Biochem & Mol Pharmacol, Chongqing Key Lab Pharmaceut Metab Res, Chongqing 400016, Peoples R China."

来源：JOURNAL OF FOOD ENGINEERING

ESI学科分类：AGRICULTURAL SCIENCES

WOS号：WOS:001062689400001

JCR分区：Q1

影响因子：5.3

年份：2023

卷号：358

期号：　

开始页：　

结束页：　

文献类型：Article

关键词：Konjac glucomannan phosphate esters; Degree of substitution; Semi-dry method with vacuum-microwave; assistance; Properties

摘要："Konjac glucomannan phosphate ester (KGMP) is a chemically modified version of konjac glucomannan (KGM) designed to address the shortages of KGM, such as low solubility in water, lack of stability in solution, and poor fluidity. In this paper, the physical, chemical, and rheological properties of the KGMP with various degrees of substitution (DS) were investigated. The KGMPs were prepared by a semi-dry method with vacuum-microwave assistance. The structure of the KGMPs was validated using Raman and solid-state 31P nuclear magnetic resonance (NMR) spectroscopy. Scanning electron microscopy (SEM) revealed that the structural change of phosphate groups primarily occurred on the surface of KGM granules, while X-ray diffraction (XRD) demonstrated that phosphate modification did not change the crystalline type of KGM. Rheological analysis indicated that KGM and KGMP sols exhibit a non-Newtonian fluid behavior, and the Carreau model is suitable for explaining the steady-state rheological behavior of KGM and KGMP with different DS. The viscosity of the KGMPs was sensitive to temperature and had good shear resistance. These findings suggest that the KGMP has potential applications in developing temperature-sensitive matrix materials, gelling food and water-retaining agents."

基金机构：Science and Technology Research Project of the Chongqing Municipal Education Commission [2023MD734133]; China Postdoctoral Science Foundation [2020YFQ0058]; Sichuan Science and Technology Support Program [XJ2017054]; Natural Science Foundation Project of Chongqing [yjg202009]; Hong Kong Scholars Program [2022CQBSHTB2009]; Chongqing Post- graduate Education and Teaching Reform Research Project; Special Funding for Postdoctoral Research Projects in Chongqing; [KJQN202202813]; [CSTB2022NSCQ-MSX0857]

基金资助正文："This work was supported by the Science and Technology Research Project of the Chongqing Municipal Education Commission (KJQN202202813) , the China Postdoctoral Science Foundation (2023MD734133) , the Special Funding for Postdoctoral Research Projects in Chongqing (2022CQBSHTB2009) , the Sichuan Science and Technology Support Program (2020YFQ0058) , the Natural Science Foundation Project of Chongqing (CSTB2022NSCQ-MSX0857) , the Hong Kong Scholars Program (XJ2017054) ,and the Chongqing Post- graduate Education and Teaching Reform Research Project (yjg202009) ."