کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7785917 | 1500614 | 2016 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural characterization, α-glucosidase inhibitory and DPPH scavenging activities of polysaccharides from guava
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کلمات کلیدی
Sodium hydroxide (PubChem CID:14798)DPPH scavenging activity - DPPH فعال کردن فعالیتEthanol (PubChem CID: 702) - اتانول (PubChem CID: 702)Trifluoroacetic acid (PubChem CID: 6422) - اسید Trifluoroacetic (PubChem CID: 6422)Dimethyl sulfoxide (PubChem CID: 679) - دی متیل سولفوکسید (PubChem CID: 679)Structure - ساختار یا سازهPolysaccharides - پلیساکاریدهاChloroform (PubChem CID: 6212) - کلروفرم (PubChem CID: 6212)Sodium chloride (PubChem CID: 5234) - کلرید سدیم (PubChem CID: 5234)Guava - گواوا
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To explore the chemicals responsible for the health benefits of guava, water-soluble polysaccharides were extracted including GP90 and P90. They exhibited excellent α-glucosidase inhibition activity with an EC50 of 2.27 μg/mL and 0.18 mg/mL. This suggests that their activities were 1379- and 17-fold higher than the positive control. The DPPH scavenging activities of GP90 was even higher than Vc at some concentrations. Upon further isolation, a novel polysaccharide termed GB90-1B was obtained. Monosaccharide analysis, methylation analysis, and NMR were used to analyze the structural characterization of GB90-1B. Structural analysis revealed that its backbone consisted of (1â5)-linked-α-l-arabinose, (1â2,3,5)-linked-α-l-arabinose and (1â3)-linked-α-l-arabinose. Branch linkages included (1â6)-linked-α-d-glucose, (1â)-linked-α-d-glucose and (1â)-linked-α-l-arabinose. The structure of the repeating unit of GP90-1B was predicted.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 144, 25 June 2016, Pages 106-114
Journal: Carbohydrate Polymers - Volume 144, 25 June 2016, Pages 106-114
نویسندگان
Ziling Zhang, Fansheng Kong, Hui Ni, Zhixian Mo, Jian-Bo Wan, Dehong Hua, Chunyan Yan,