Optimization of enzyme assisted extraction of polysaccharides from Poria cocos
نویسندگان
چکیده
منابع مشابه
Preparation of bioactive water-soluble pachyman hydrolyzed from sclerotial polysaccharides of Poria cocos by hydrolase
Water-soluble pachyman (WSP) was prepared by enzymic hydrolysis of pachyman extracted from Poria cocos sclerotium using a 0.5 mol l 1 NaOH solution at the optimized conditions of 55 1C, pH 4, 4% pachyman, 2 U ml 1 hydrolase, and a hydrolysis time of 6 h. Two WSP fractions, WSP-1 and WSP-2, were prepared using SephadexG-100 to separate WSP. Both fractions were of the b-(1-3)-D-dextran structure ...
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Enzyme-assisted extraction optimization, characterization and in vitro antioxidant activity of polysaccharides from sea cucumber Phyllophorus proteus (PPP) were investigated in the present study. The optimal extraction conditions with a yield of 6.44 ± 0.06% for PPP were determined as follows: Extraction time of 2.89 h, ratio of extraction solvent to raw material of 16.26 mL/g, extraction pH of...
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آنزیم تریپسین در شرایط قلیایی ناپایدار می باشد .و فعالیت پروتئولیتیکی تریپسین منجربه خود هضمی آن در جایگاههای خاصی می گردد. بنابر این آنزیمی با ناپایداری بالا محسوب میگردد. در سالهای اخیر موفق شدند که با ایجاد تغیرات شیمیایی با اضافه کردن فلزات خاص ، کلسیم و یا عمل استیلاسیون منجر به افزایش پایداری آنزیم تریپسین گردند. مطالعات در حال حاضر نشان می دهد که تریپسین استیله شده فعالیت آنزیمی خود را ...
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The process of ultrasonic-enhanced compound-enzymes-assisted extraction of polysaccharides from the fruit of Cornus officinalis was optimized by response surface methodology (RSM). The influence of three different factors on the yield of C. officinalis polysaccharides (COP) was studied. The results showed that the optimal conditions were extraction temperature 49.6 °C, ultrasound time 40.41 min...
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ژورنال
عنوان ژورنال: Journal of Medicinal Plants Research
سال: 2017
ISSN: 1996-0875
DOI: 10.5897/jmpr2017.6366