摘要
以萌发糙米为原料提取不溶性多酚类化合物,探讨碱水解条件和乙酸乙酯萃取条件对不溶性多酚提取得率的影响。通过单因素实验和正交实验,确定碱水解最佳条件为:粉碎粒度40目、NaOH浓度1·5mol/L、水解时间2·5h、料液比1:18;乙酸乙酯萃取最佳条件为:乙酸乙酯添加量40mL、萃取时间30min、振荡速度200r/min、pH2·0。在此条件下不溶性多酚提取得率为32·35mg/100g。
The factors of alkaline hydrolysis and ethyl acetate extraction,which influence the extraction yield in the technology for extraction of bound phenolics from pre-germinated brown rice,were researched through single factor experiments and orthogonal experiment.The optimum technological parameters for extraction of bound phenolics were determined：particle size 40 mesh,NaOH concentration 1.5mol/L,alkaline hydrolysis 2.5h,solid-liquid ratio 1：18.The extraction parameters were addition of ethyl acetate 40mL,extraction time 30min,shake speed 200r/min,pH2.0.The yield of bound phenolics could reach 32.35mg/100g.
出处
《食品工业科技》
CAS
CSCD
北大核心
2010年第12期231-234,237,共5页
Science and Technology of Food Industry
基金
淮安市2008年度科技支撑计划(工业)项目(HAG08056)
关键词
萌发糙米
不溶性多酚
提取
pre- germinated brown rice
bound phenolics
extraction technology
