橄榄油
明胶
化学
橄榄树
聚合
橄榄叶
拉伤
核化学
食品科学
植物
有机化学
聚合物
生物
解剖
作者
Takashi Akazawa,Hikaru Itami,Masahiro Ogawa
摘要
Summary A cold‐water extract prepared from olive tree leaves ( Olea europaea L.) was utilised to enhance the mechanical strength and melting temperature of fish gelatin (FG) gel. At concentrations of 5.0% (w/v), olive leaf extract (OLEx) enhanced the breaking stress and strain of FG gel by 11.6‐ and 1.9‐fold, respectively. The melting temperature of FG gel was positively correlated with OLEx levels with FG gel not melting even at temperatures exceeding 80 °C, with the addition of 0.5% (w/v) OLEx. Chemical analysis of FG protein indicated that OLEx induced graft polymerisation of the FG polypeptide chains by reacting with the primary amino groups of FG. Oleacein, the major phenolic compound, purified from OLEx, acted as a cross‐linker, enhancing the breaking strength of the gel, suggesting its predominant role in the gel‐enhancing activity of OLEx. Thus, OLEx demonstrates significant potential as a natural modifier for enhancing FG gel properties.
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