葡萄籽低聚原花青素提取及性质分析  

Separation and Properties of Oligomeric Proanthocyanidins from Grape Seeds

作　　者：赵文军[1] 吴雪萍[1] 王旭[1] 

机构地区：[1]中国科学院新疆理化技术研究所,新疆乌鲁木齐830011

出　　处：《精细化工》2004年第8期591-593,共3页Fine Chemicals

摘　　要：考察了提取温度、时间、磷酸体积分数对提取液低聚原花青素质量浓度的影响,并对提取物的理化性质作了分析。结果表明:φ(水)=8%、φ(磷酸)=3%的乙酸乙酯溶液作提取剂,室温下搅拌提取10h的条件最适,所得产物颜色淡,水溶性好,聚合度值为3 8±0 2,其低聚原花青素质量分数大于70%,提取率达2 2%。Effects of some factors,including extraction time,extraction temperature and volume fractions of phosphoric acid,on the mass concentration of oligomeric proanthocyanidins(OPCs) were studied.The physical and chemical properties of the product were analysed.Thus,with ethyl acetate solution 〔 φ (water)=8% and φ (phosphoric acid)=3%〕 as extractant,stirring at room temperature for 10 h,the yield was over 2 .2% and mass fractions of OPCs were higher than 70%.The product was grayish and had good water solubility.Its degree of polymerization was 3 .8±0 .2.

关 键 词：葡萄籽 提取 低聚原花青素 聚合度 

分 类 号：O652.62[理学—分析化学]