摘要
以组培采摘后剩余的金线莲残留的根茎为研究对象,对其水提后的提取液进行冷冻浓缩。以冰晶夹带率、冷冻浓缩速率作为评价指标,通过响应面分析来确定金线莲根茎提取液冷冻浓缩的最佳工艺。结果表明:在冷媒—浓缩物温度差5℃,刮刀速率45r/min,浓缩时间13.5h的条件下,冰晶夹带率为0.891 0%,浓缩平均速率为0.953 6 mg/(mL·h),综合分值为0.796 1,综合评价指标最高。
The freezing concentration of aqueos extracts feom the residual rhizome of Anoectochilus roxburghii has been investigated.The loss rate caused by entrainment of ice crystals and the rate of the freezing concentration were selected as the evaluation indexes to design the optimization of processing by the response surface methodology.The experimental results showed that the most ideal process were as the followed：the temperature difference between refrigerant and concentration 5 ℃,scraper speed 45r/min,and freeze concentration time,13.5h.Under the conditions,the loss rate caused by entrainment o f ice crystals was 0.891 0% and the rate of the freeze concentration was 0.953 6 mg/（mL·h）,and the comprehensive score was 0.796 1,which was the best comprehensive evaluation score in all.
出处
《食品与机械》
CSCD
北大核心
2016年第5期168-172,共5页
Food and Machinery
基金
国家自然科学基金资助项目(编号:31101327)
高等学校博士学科点专项科研基金博导类资助课题(编号:20123515110016)
福建省中青年教师教育科研项目A类课题(编号:JA13385)
漳州职业技术学院科研计划资助项目(编号:ZZY1305)
关键词
金线莲
冷冻浓缩
悬浮式
冰晶夹带率
浓缩速率
Anoectochilus roxburghii
freeze concentration
suspension
loss rate
concentration rate
