微滤膜材质对杨梅汁理化品质及抗氧化活性的影响  

Effects of Various Micro-filtration Membranes on Physicochemical Properties and Antioxidant Activity of Bayberry Juice

作　　者：陈虹吉 陈亦欣 叶兴乾[1] 刘东红[1] 陈健初[1] Chen Hongji;Chen Yixin;Ye Xingqian;Liu Donghong;Chen Jianchu(College of Biosystems Engineering and Food Science,Zhejiang University,Fuli Institute of Food Science,Zhejiang Key Laboratory for Agro-Food Processing,Zhejiang R&D Center for Food Technology and Equipment,Hangzhou 310058)

机构地区：[1]浙江大学生物系统工程与食品科学学院馥莉食品研究院浙江省农产品加工技术研究重点实验室浙江省食品加工技术与装备工程中心,杭州310058

出　　处：《中国食品学报》2021年第2期152-160,共9页Journal of Chinese Institute Of Food Science and Technology

基　　金：国家重点研发计划项目(2017YFD0400704)。

摘　　要：为了寻找适合杨梅汁澄清处理的微滤膜,选用聚醚砜膜(PES)、尼龙膜(Nylon)、醋酸纤维膜(CA)、聚偏氟乙烯亲水膜(PVDF)、聚四氟乙烯亲水膜(PTFE)和聚丙烯膜(PP)6种材质的微滤膜,研究不同材质滤膜对杨梅汁理化品质的影响。结果表明:6种材质的滤膜均能有效提高杨梅汁的透光率,降低果汁中蛋白质含量;不同材质滤膜对杨梅汁可溶性固形物、酸度和pH值无显著性影响(P>0.05);不同材质滤膜对花色苷、总酚和总黄酮的含量以及抗氧化活性的影响具有显著性差异(P<0.05)。其中,尼龙膜(Nylon)对杨梅汁中的活性成分及色泽吸附最大,不适于杨梅汁的微滤处理;聚醚砜膜(PES)、醋酸纤维膜(CA)、聚偏氟乙烯亲水膜(PVDF)、聚四氟乙烯亲水膜(PTFE)和聚丙烯膜(PP)对杨梅汁品质和色泽的影响较小,适于杨梅汁的澄清过滤;聚丙烯膜(PP)具有最高的纯水通量和渗透通量,相比于其它5种滤膜能够获得更高的过滤效率。Six different micro-filtration membranes with pore size of 0.45μm,including PES,Nylon,CA,PVDF,PTFE and PP were used to clarify bayberry juice.We determined the physicochemical indexes and antioxidant activity of the filtered bayberry juice.Results showed that all the micro-filtration membranes could effectively improve the transmittance of bayberry juice and reduce the protein content in the juice.Micro-filtration membranes of different materials had no significant effect on soluble solids,acidity and pH value of bayberry juice(P>0.05).The effects on anthocyanins,total phenols and total flavonoids content and antioxidant activity were significantly different(P<0.05).Nylon membrane was not suitable for clarifying bayberry juice because it has the largest adsorption on the active components and color of bayberry juice.Polypropylene membrane had the highest pure water flux and permeation flux of bayberry juice,which could achieve higher filtration efficiency compared with other five micro-filtration membranes.

关 键 词：微滤 杨梅汁 品质 抗氧化活性 

分 类 号：TS255.44[轻工技术与工程—农产品加工及贮藏工程]