不同贮藏温度对刺梨原汁中维生素C含量的影响

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摘 要：利用2，6-二氯靛酚滴定法测定刺梨原汁中的维生素C含量，分析不同贮藏温度对刺梨原汁的维生素C含量的影响。结果表明，刺梨原汁的维生素C含量受温度影响较大，在冷冻条件下其维生素C含量相对稳定，但随着贮藏时间的增加，维生素C含量明显下降，且温度越高，下降越多。

关键词：刺梨原汁；维生素C；贮藏温度

The Effects of Vitamin C in Rose roxburghii Trat Juice in Different Storage Temperature

CHEN Ping， LIU Yiwei， QING Yunguang

（Qiannan Inspection and Testing Institute， Duyun 558000， China）

Abstract： The purpose of this study was designed to determine the content of vitamin C in Rose roxburghii Tratt juice by the methods of 2，6-dichloro-indophenol titration， and to evaluate the effects of different storage temperatures on the content of vitamin C in Rose roxburghii Tratt juice. The results clearly showed that the content of vitamin C in Rose roxburghii Tratt juice was greatly affected by temperature， and the sampled levels were relatively stable under freezing conditions. However， the content showed a significant downward trend as the storage time increased， there would be a higher temperature and hence lower content.

Keywords： Rose roxburghii Tratt; vitamin C; storage temperature

刺梨（Rose roxburghii Tratt），主要分布于我国贵州省、川东南、滇东北等地，功能性成分种类丰富且含量较高，不同地区的刺梨果实因生长环境不同，其营养成分含量存在差异。（剩余3758字）