摘要
探索了湘西刺葡萄皮渣提取色素后果胶的联产提取工艺条件,并对提取所得果胶产品进行品质检测。结果表明,以0.05 mol/L的稀H2SO4为提取剂,料液比为1∶10,pH值为2.5,在80℃条件下提取1 h,提取2次,提取效果最好。产品得率为9.82%,半乳糖醛酸含量为68.86%。联产工艺用溶剂法从刺葡萄皮渣中提取的果胶产品4项指标优于国家标准,2项指标弱于国家标准。
The technical conditions of combined extraction of pectin from grape peel and pomace were investigated and the quality of the ex- tracted pectin was evaluated. 0.05 mol/L dilute H2SO4 was used as extracting agent, the ratio of raw materials and liquid was 1：10（g：mL）, pH value was 2.5, 1 h extraction was carried out twice with temperature at 80℃, and the best extraction effects could be achieved with product yield as 9.82 % and the content of galacturonic acid as 68.86 %. By the solvent method, the result showed that the extracted pectin had 4 indexes superior to the national standards and 2 indexes inferior to the national standards.
出处
《酿酒科技》
北大核心
2012年第4期105-108,共4页
Liquor-Making Science & Technology
关键词
刺葡萄皮渣
果胶
联产提取工艺
检测
grape （Vitis davidii Foex）peel and pomace
pectin
combined extraction
measurement
