کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1386102 982472 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of ultrasonic-assisted extraction process of Poria cocos polysaccharides by response surface methodology
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Optimization of ultrasonic-assisted extraction process of Poria cocos polysaccharides by response surface methodology
چکیده انگلیسی

Polysaccharides production from Poria cocos was carried out using aqueous NaOH with the assistance of ultrasonic. Experimental design was used to investigate the effect of three parameters (extraction time, extraction concentration of NaOH, and ratio of aqueous NaOH to raw material) on polysaccharides yields. The ranges of the factors investigated were 1–3 min for extraction time (X1), 0.5–1.0 mol/L for extraction concentration of NaOH (X2), and 30–50 for ratio of aqueous NaOH to raw material (X3). The statistical analysis of the experiment indicated that extraction concentration of NaOH had significant effect on P. cocos polysaccharides yields. The central composite design showed that polynomial regression models were in good agreement with the experimental results with the coefficients of determination of 0.9935 for P. cocos polysaccharides yield. The optimal condition for P. cocos polysaccharides yield within the experimental range of the variables studied was at 2.44 min, 0.789 mol/L, and 53.0. At this condition, the predicted yield of polysaccharides extracted was 82.3%.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 77, Issue 4, 19 July 2009, Pages 713–717
نویسندگان
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