不同貯藏溫度對(duì)刺梨原汁中維生素C含量的影響

打開文本圖片集

摘 要：利用2，6-二氯靛酚滴定法測(cè)定刺梨原汁中的維生素C含量，分析不同貯藏溫度對(duì)刺梨原汁的維生素C含量的影響。結(jié)果表明，刺梨原汁的維生素C含量受溫度影響較大，在冷凍條件下其維生素C含量相對(duì)穩(wěn)定，但隨著貯藏時(shí)間的增加，維生素C含量明顯下降，且溫度越高，下降越多。

關(guān)鍵詞：刺梨原汁；維生素C；貯藏溫度

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），主要分布于我國(guó)貴州省、川東南、滇東北等地，功能性成分種類豐富且含量較高，不同地區(qū)的刺梨果實(shí)因生長(zhǎng)環(huán)境不同，其營(yíng)養(yǎng)成分含量存在差異。（剩余3758字）