摘要
为优化小米多糖的提取工艺,研究了颗粒与粉、液料比、提取时间、提取温度、提取次数和搅拌速率6个因素对小米中多糖收率的影响,并选取液料比、提取时间、提取温度的3因素12个水平,用均匀设计法进行试验,用DPS进行统计分析并得到最优组合。结果表明,提取温度对多糖的收率有显著影响,液料比和提取时间对多糖的收率影响不显著,水提小米多糖的最佳工艺条件为液料比21.7∶1、提取时间2.19h、提取温度72.3℃,多糖收率为7.90mg/g。
To optimize the technology for extracting polysaccharides from millet, the effects of particle or powder, liquid to material ratio, extraction time, extraction temperature, extraction times and stirring rate on the extraction rate were studied with single-factor experiments. Then three factors, liquid to material ratio, extraction time and extraction temperature, were selected for a uniform design experiment with twelve levels. The statistic analysis was made with DPS and the optimal combination was obtained. Temperature show notable effects on the yield of polysaccharides, liquid to material ratio and extraction time have no notable effects on the yield. The established optimum technical conditions are liquid to solid ratio 21.7：1, extraction time 2.19 h, extraction temperature 72.3 ℃, the yield of polysaccharides is 7.90 mg/g.
出处
《浙江科技学院学报》
CAS
2013年第1期27-32,共6页
Journal of Zhejiang University of Science and Technology
基金
浙江省科技计划项目(2007C21063)
关键词
小米多糖
提取工艺
均匀设计
millet polysaccharide： extraction technology l uniform design
