摘要
百香果是极受欢迎的水果,但目前多取其果汁却丢弃果皮从而污染环境。百香果果皮含有丰富的果胶,果胶具有可食性并在各类食品中广泛应用。本文通过将前期研究提取出的百香果果皮果胶PFPP与羧甲基纤维素钠(CMC)、聚乙烯醇(PVA)、甘油等复合制备出可食性薄膜,并通过对PFPP、CMC、PVA和甘油的质量分数以及干燥温度和干燥时间等进行单因素试验和部分正交试验,发现最佳制膜工艺条件为PFPP质量分数为0.20%,CMC质量分数0.2%、PVA质量分数1.0%、甘油质量分数为0.30%、干燥温度40℃、干燥时间为4h。将制备出的PFPP可食性薄膜应用到草莓的保鲜贮藏中,并测定草莓的失重率、腐烂率、色泽、有机酸含量、可溶性固形物含量、VC含量等理化指标的变化,发现相比其它6组保鲜处理膜,PFPP可食性薄膜在草莓保鲜方面整体上具有更加优异的保鲜性能,可为延长草莓的保鲜期提供新的技术支撑。
Passion fruit is a very popular fruit, but at present, it is utilized by taking its juice while its peel is discarded and polluted the environment. Passion fruit peel contains rich pectin, which is edible and widely used in various foods. In this research, the edible film was prepared by compounding the peel pectin PFPP extracted in the previous study with sodium carboxymethyl cellulose(CMC), polyvinyl alcohol(PVA), glycerin, etc.,and through the single factor test and partial orthogonal test on the mass fraction of PFPP, CMC, PVA and glycerin, as well as the drying temperature and drying time, it was found that the best film preparation process conditions were that the mass fraction of PFPP was 0.20%, the mass fraction of CMC was 0.2%, the mass fraction of PVA was 1.0%, the mass fraction of glycerin was 0.30%, the drying temperature was 40 ℃, and the drying time was 4 h. The prepared edible film of PFPP was applied to strawberry preservation and storage, and the changes of physical and chemical indexes such as weight loss rate, decay rate, color, organic acid content, soluble solids content, Vc content of strawberry were measured. It was found that the edible film of PFPP had more excellent fresh-keeping performance in strawberry preservation as a whole, by comparing with other six groups of preservative treatment films. This could provide new technical support for extending the fresh-keeping period of strawberry.
作者
王锦秀
郑明锋
李灼坤
陈清西
Wang Jinxiu;Zheng Mingfeng;Li Zhuokun;Chen Qingxi(College of Horticulture,Fujian Agriculture and Forestry University,Fujian,350002;College of Food Science,Fujian Agriculture and Forestry University,Fujian,350002)
出处
《当代化工研究》
2022年第24期1-5,共5页
Modern Chemical Research
基金
2021年福建省科技计划项目-区域发展项目“百香果优质高产栽培与全果加工关键技术研究示范”(项目编号:2021N3007)。
关键词
百香果
果皮
果胶
可食性薄膜
保鲜
草莓
passion fruit
peel
pectin
edible film
preservation
strawberry
