کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1383781 1500639 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of ultrasound extraction of Alisma orientalis polysaccharides by response surface methodology and their antioxidant activities
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Optimization of ultrasound extraction of Alisma orientalis polysaccharides by response surface methodology and their antioxidant activities
چکیده انگلیسی


• Ultrasound conditions were optimized for a high yield of RAP by RSM.
• RAP and two purified fractions possessed a good antioxidant activity in vitro.
• RAP can be explored as novel natural antioxidant or functional food.

Rhizoma alismatis (the rhizome of Alisma orientalis) polysaccharides (RAP) have been reported to have a variety of important biological activities. However, effective extraction of RAP has been an unsolved issue. In this study, we used an ultrasound method for high yield extraction of RAP and optimized the conditions using the response surface methodology (RSM). Following multiple regression analyses of the experimental results, we applied the 3-D response surface and the contour plots to determine the optimal conditions, which were found to be ultrasound treatment at 76.1 °C for 75.2 min, and water to material ratio at 30.1 ml/g. Under such conditions, the yield was 6.90% which was much higher than traditional hot water extraction yield (3.41%). The fractionated RAPs following stepwise ethanol precipitation showed strong antioxidant activities. The results indicated that ultrasound extraction was a very effective method for the extraction of RAP and the polysaccharides could be explored as a potential antioxidant agent for use in medicine or functional food.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 119, 30 March 2015, Pages 101–109
نویسندگان
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