天然产物研究与开发 ›› 2018, Vol. 30 ›› Issue (增刊2): 194-199.

• 开发研究 • 上一篇    下一篇

微波辅助提取枸杞多糖工艺优化及内部品质综合判别

刘元林1,田晓静1*,龙鸣1,陈士恩1,李明生1,2,高丹丹1,马忠仁1,2   

  1. 1西北民族大学生命科学与工程学院,兰州 730124;2西北民族大学生物医学研究中心,兰州 730030
  • 出版日期:2019-01-18 发布日期:2019-01-18
  • 基金资助:

    国家自然科学基金(31560477);科技部援助项目(KY201501005);甘肃省科技计划资助(17YF1WA 166,18JR3RA371)

The Process Optimization of Microwave Assisted Extraction of LBP and Comprehensive Discrimination of Internal Quality for Lycium Barbarum Fruits

LIU Yuan-lin1,TIAN Xiao-jing1*,LONG Ming1,CHEN Shi-en1,LI Ming-sheng1,2,GAO Dan-dan1,MA Zhong-ren1,2   

  1. 1College of life science and Engineering,Northwest Minzu University,Lanzhou 730124,China; 2Biomedical Research Center, Northwest Minzu University,Lanzhou 730030, China
  • Online:2019-01-18 Published:2019-01-18

摘要: 为探索陈年枸杞内部品质变化规律,本研究以宁夏枸杞子为研究对象,以枸杞多糖提取率为指标,采用单因素和正交试验法优化微波法提取枸杞多糖条件,结合多元统计分析对枸杞内部品质进行综合判别。结果发现,单因素实验发现枸杞多糖提取率随微波功率、提取时间和料液比均呈现先上升再下降的趋势;正交试验确定较佳的微波辅助提取枸杞多糖工艺为A1B2C3,即提取功率210 W、料液比1∶20 g/mL、提取时间25 min。对不同年份生产的枸杞,其多糖含量随贮藏时间延长而降低,且典则判别分析结果均能将不同年份生产枸杞有效区分,主成分分析将市售15种枸杞区分为三大类,青海产、宁夏产和其他枸杞子,实现了对不同枸杞的鉴别区分,这为枸杞市场监督提供有效的方法,为有效保护消费者健康提供参考。

关键词: 枸杞多糖, 微波辅助提取, 正交试验, 内部品质

Abstract: To explore the changing trend of the inner quality of Lycium barbarum fruits,single factor and orthogonal test were used to optimize the extraction process Lycium barbarum polysaccharide (LBP) of dried fruit of Lycium barbarum by method of microwave extraction,combined with the multivariate statistical analysis to discriminate internal quality for Lycium barbarum fruits.The results showed that the extraction rate of LBP changed with microwave power,extraction time and liquid ratio,and the optimized processes for microwave extraction method for LBP was A1B2C3,extraction power 210 W,material liquid ratio 1∶20 g/mL,extraction time 20min.For Lycium barbarum fruits produced in different,the content of LBP declined with storage time,and Canonical discriminant analysis could divide it into three categories,fresh,stale and aged stale fruits.For 15 brands of Lycium barbarum fruits commercially available,principal component analysis could divide it into three categories,qinghai,ningxia and other production area.The results monitored the changes of Lycium barbarism polysaccharide content,laid method foundation for the detection of the freshness and producing area of Lycium barbarum fruits.

Key words: Lycium barbarum polysaccharide (LBP), microwave assisted extraction, orthogonal test, internal quality

中图分类号:  TS202.1