摘要
本文研究了γ-聚谷氨酸(PGA)对不同微生物的抑制性,及其与淀粉(St)复合涂膜对樱桃的保鲜效果。结果表明:PGA对大肠杆菌、枯草芽孢杆菌和酵母菌的最低抑菌浓度分别为2.5~5、2.5、和55 mg·mL^-1;比较PGA/St复合涂膜樱桃7 d后的保鲜效果,当PGA∶St为1∶2时,感官评价、失重率、总酸含量和维生素C含量最佳,分别为6分、6.73%、8.3 g·kg^-1和53.37μg·g^-1,结果表明具有应用价值。
In this paper,the antimicrobial effect ofγ-polyglutamic acid(PGA)on different microorganisms and its preservation effect with starch(St)composite coating on cherry were investigated.The results showed that the minimum inhibitory concentrations(MIC)of PGA on Escherichia coli,Bacillus subtilis and Yeast were 2.5~5、2.5 mg·mL^-1and 55 mg·mL^-1,respectively.Compared to the preservation of composite and control films,sensory evaluation,weight loss rate,total acid content and vitamin C content were the best when the quality ratio of PGA∶St was 1∶2,which were 6 score,6.73%,8.3 g·kg^-1 and 53.37μm·g^-1,respectively.The results showed that PGA/St film had application value.
作者
吴依莎
郦丹妮
周夏
许依能
柳佳玲
余作龙
马新生
Wu Yisha;Li Danni;Zhou Xia;Xu Yineng;Liu Jialing;Yu Zuolong;Ma Xinsheng(College of Biological and Environmental Engineering,Zhejiang Shuren University,Hangzhou 310015,China;Public Safety Supervision and Management Center of Si’an Town,Changxing County,Huzhou 313113,China)
出处
《现代食品》
2019年第23期168-172,共5页
Modern Food
基金
浙江树人大学大学生科技创新活动计划（校新苗人才计划）（编号：2019XM42011）
浙江树人大学实验室开放项目（编号：2019JS2002）
关键词
Γ-聚谷氨酸
复合膜
抑菌性
保鲜
γ-poly glutamic acid
Composite film
Antibacterial
Preservation
