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研究报告

植物甾醇在不同基质饮料中的储藏稳定性研究

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  • 浙江工业大学海洋学院,浙江杭州310014
杨 开(1978—),男,浙江奉化人,副研究员,研究方向为食品化学与资源利用,E-mail:yangkai@zjut.edu.cn.

基金资助

浙江省科技厅植物食品创新团队项目(2012R10032-09)

Storage stability of phytosterol in beverages of different matrix

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  • College of Ocean,Zhejiang University of Technology,Hangzhou 310014,China

摘要

将乳化后的植物甾醇按相同添加量加入到牛奶、果汁和果汁乳饮料中,在4,20,35℃条件
下恒温保存三个月,每隔一个月测定三种饮料中植物甾醇氧化物(POPs)和植物甾醇的质量分数.
实验结果表明:储藏期结束后,35 ℃条件下保存的牛奶中POPs质量分数最多,达(997.09±
26.48)μg/g,甾醇损失率达(25.50±1.03)%,4℃保存的果汁乳饮料中的POPs质量分数最少,为
(237.65±16.48)μg/g,甾醇损失率为(2.95±0.37)%.以牛奶为基质的饮料中的POPs质量分数
最多,其次是果汁,果汁乳饮料最少.将三种含植物甾醇的饮料在室温下置于光照和避光条件下保
存,储藏期结束后,光照组中的POPs质量分数均明显大于避光组.

本文引用格式

杨 开,王玏萦,徐梦婷,孙培龙 . 植物甾醇在不同基质饮料中的储藏稳定性研究[J]. 发酵科技通讯, 2017 , 46(1) : 6 -10 . DOI: 10.16774/j.cnki.issn.1674-2214.2017.01.003

Abstract

Equivalent amount of emulsified phytosterols were added into the milk,fruit juice and
juice-milk beverage.All the beverages were stored at 4,20,35 ℃ for three months and the
content of phytosterol oxidation products(POPs)and phytosterol were determined at regular
time every other month.The results showed that the contents of POPs in milk were the highest,
followed by fruit juice and juice-milk beverage.The highest contents of POPs in the milk stored
at 35℃ were(357.09±26.48)μg/g,the losses of total phytosterol were(25.50±1.03)%after
three months,and the lowest contents of POPs in the juice-milk beverage stored at 35℃ were
(237.65±16.48)μg/g and the losses of total phytosterol were(2.95±0.37)%.The three
beverages of different matrix containing phytosterols were stored at room temperature under light
and dark conditions,respectively and the contents of POPs in the light group were significantly
higher than that in the dark group.
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