摘要
以野生绞股蓝为材料 ,提取液中皂甙、总糖、总灰分、氨基酸、蛋白质的含量及稳定性、风味为分析指标 ,运用正交试验提出绞股蓝水浸提法的优化工艺 :粉碎的绞股蓝中加入 4 0倍重量的水 ,调至pH9,85～ 95℃恒温浸提 5～ 10min。在pH <6 ,保存温度低于 15℃条件下 ,绞股蓝提取液不稳定是由皂甙沉淀引起的。试验确定较理想的保存条件是 :调节提取液pH8～ 9,保存于 15～ 2 5℃。加入 10mg/l的柠檬酸钠或EDTA -
The process of water-extracting contents in Gynostemma pentaphyllum was studied in this paper. Orthogonal design was used, and saponated glucoside, sugar, ash, protein, amino acid were analyzed,its stability and odor were measured. The optimum process was that Gynostemma pentaphyllum powder was extracted for 5 to 10 minutes in water with pH9 at 85℃～90℃ and the weight of added water was 40 times as much as the powder. The sediment of saponated glucoside resulted in unsability of the extraction under the condition of pH<6 and temperature below 15℃.The optimum condition for the storage of the extraction in the experiment was pH8～9 and 15℃～25℃.The stability of extraction could be improved by 10mg/L sodium citrate or EDTA-2Na.
关键词
提取
提取液稳定性
绞股蓝
有效成分
Gynostemma pentaphyllum
extracting condition
extraction
stability
