Optimization of extraction process of pectin from Orah peel by response surface methodology
Using the fresh Orah from Shuangqiao town,Wuming,Guangxi as raw material,the pectin was extracted by acid method,and taking the yield of pectin from Orah as evaluation index,the extraction conditions of Orah pectin were optimized by single factor and response surface method.The results showed that the optimal extraction parameters were as follows:liquid-solid ratio 50∶1(ml∶g),extraction pH 1.3,temperature 89 ℃,and time 97 min.Under the conditions,the yield of pectin was 21.36％.The water content of pectin was 10.5％,the acid-insoluble ash content was 0.48％,the galacturonic acid content was 72.6％,and the esterification degree was 89.9％,meeting the national standards for pectin.The results showed that the acid method could be used to extract pectin from Orah peel.
万方数据
维普
