Article (Scientific journals)
Impact of pectin characteristics on lipid digestion under simulated gastrointestinal conditions: Comparison of water-soluble pectins extracted from different sources
Zhou, Mo; Bi, Jingfeng; Chen, Jiaxin et al.
2021In Food Hydrocolloids, 112, p. 106350
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Keywords :
Water-soluble pectin; Rheological property; Cross-linking; Lipid digestion; Gastrointestinal tract
Abstract :
[en] Four kinds of water-soluble pectin (WSP) extracted from hawthorn (HWSP), apple (AWSP), peach (PWSP), and carrot (CWSP) were mixed with oil-in-water emulsion to investigate pectin characteristics on lipid digestion under simulated gastrointestinal conditions. All WSPs were comprehensively characterized by the degree of methoxylation, neutral sugar composition, molecular weight and conformational parameters, intrinsic viscosity, the degree of linearity and branching, as well as molecular morphology observation by atomic force microscopy. The results demonstrated these WSPs possessed different structural characteristics. The molecules of HWSP were of small size with extended short and linear main chain, forming a certain amount of aggregations in the solution, while the molecules of PWSP were of large size with long and branched chains, forming intensive network structure. The molecular chains of AWSP and CWSP were both of medium size and tended to be flexible random coils in solution forming extensive entangled structures. The apparent viscosity of HWSP and PWSP solutions were both higher than those of AWSP and CWSP due to the aggregations or network structure. And the solution of PWSP showed better anti-shear ability than that of HWSP due to the strong cross-linking between molecule chains. The inhibitory effect of WSPs on lipid digestion decreased with the following order: PWSP, HWSP, CWSP, AWSP, which can be well related with their rheological property. The pectin with large molecular weight and highly branched chains that resulted in strong intermolecular interaction will possess good inhibitory effect on lipid digestion.
Disciplines :
Chemistry
Author, co-author :
Zhou, Mo ;  Université de Liège - ULiège > Terra
Bi, Jingfeng;  Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Chen, Jiaxin;  Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Wang, Ruixie;  Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Richel, Aurore  ;  Université de Liège - ULiège > Département GxABT > SMARTECH
Language :
English
Title :
Impact of pectin characteristics on lipid digestion under simulated gastrointestinal conditions: Comparison of water-soluble pectins extracted from different sources
Publication date :
2021
Journal title :
Food Hydrocolloids
ISSN :
0268-005X
eISSN :
1873-7137
Publisher :
Elsevier, Netherlands
Volume :
112
Pages :
106350
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 December 2020

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