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Preparation and characterisation of films from xylose‐glycosylated peanut protein isolate powder
Author(s) -
Lin WeiJing,
Liu HongZhi,
Shi AiMin,
Liu Li,
Adhikari Benu,
Wang Qiang
Publication year - 2015
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.12800
Subject(s) - dissolution , glycerol , materials science , ultimate tensile strength , chemical engineering , elongation , xylose , water resistance , mechanical strength , atmospheric temperature range , chemistry , organic chemistry , composite material , fermentation , physics , meteorology , engineering
Summary This work aimed at producing and characterising xylose‐glycosylated peanut protein isolate ( PPI ‐X) films by dissolving PPI ‐X powder in water at ambient temperature and further plasticising with glycerol. The effect of powder dissolution temperature (20–100 °C) and glycerol concentration (15.0–45.0%, w/w) on mechanical properties and integrity of these films was quantified. The results showed that the powder dissolution temperature had no significant effect on the mechanical and water resistance properties of PPI ‐X films within the temperature range tested. With increasing concentration of glycerol, the tensile strength and water resistance of PPI ‐X films decreased and elongation increased. The films produced by dissolving the PPI ‐X powder at 20 °C and plasticising with 25.0% glycerol had comparable mechanical properties and better water resistance compared to some other plant protein films plasticising with glycerol. The results suggested that PPI ‐X films could potentially be used as biodegradable packaging materials.