کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6482290 | 1415985 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enrichment, purification and in vitro antioxidant activities of polysaccharides from Umbilicaria esculenta macrolichen
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Umbilicaria esculenta as an edible macrolichen possesses nutritional properties, such as antioxidant, immune-boosting, and lipid peroxidation inhibitory properties. A new enrichment and separation technology for the polysaccharides from Umbilicaria esculenta (UEP) with AB-8 resin was established, and its adsorption data were well fitted to the pseudo-second-order kinetic model and the Langmuir isotherm, with a process of monolayer coverage of UEP onto it. After purification by DEAE (diethylaminoethyl) Cellulose-52 chromatography, two polysaccharide fractions (UEP-1, UEP-2) were obtained and characterized. UEP-1 was composed of mannose, rhamnose, glucose and galactose in a molar ratio of 0.59:3.12:93.09:3.20 with a molecular weight of 124.7Â kD, while UEP-2 comprised mannose and glucose in a molar ratio of 20.66:79.34 with a molecular weight of 249.4Â kD. With DPPH (2, 2-diphenyl-1-picrylhydrazyl), ABTS (2,2â²-Azinobis-(3-ethylbenzthiazoline-6-sulphonate), superoxide anion, and hydroxyl scavenging capacities as indices, their antioxidative assays in vitro indicated that the polysaccharides exhibited the very strong scavenging activities in a concentration-dependent manner. It was worth expecting that UEP could be developed as a novel potential functional component in food industries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical Engineering Journal - Volume 130, 15 February 2018, Pages 10-20
Journal: Biochemical Engineering Journal - Volume 130, 15 February 2018, Pages 10-20
نویسندگان
Yufeng Wang, Xu Shu, Yangyang Chen, Jingfang Yan, Shengsheng Zhang, Benyue Wu, Jinxia Jia,