کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7593840 1492120 2015 35 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Isolation, identification and antioxidant activity of bound phenolic compounds present in rice bran
ترجمه فارسی عنوان
جداسازی، شناسایی و فعالیت آنتی اکسیدانی ترکیبات فنلی موجود در سبوس برنج
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
The bound phenolic compounds in rice bran were released and extracted with ethyl acetate based on alkaline digestion. An investigation of the chemical constituents of EtOAc extract has led to the isolation of a new compound, para-hydroxy methyl benzoate glucoside (8), together with nine known compounds, cycloeucalenol cis-ferulate (1), cycloeucalenol trans-ferulate (2), trans-ferulic acid (3), trans-ferulic acid methyl ester (4), cis-ferulic acid (5), cis-ferulic acid methyl ester (6), methyl caffeate (7), vanillic aldehyde (9) and para-hydroxy benzaldehyde (10). The structures of these compounds were determined using a combination of spectroscopic methods and chemical analysis. Among the compounds isolated, compound 3, 5 and 7 exhibited strong DPPH and ABTS+ radical scavenging activities, followed by compounds 4 and 6. Compound 1 and 2 showed potent DPPH and ABTS+ radical scavenging activities, compound 8 displayed moderate antioxidant activity against ABTS+ radical, whereas compound 9 and 10 showed weak antioxidant activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 171, 15 March 2015, Pages 40-49
نویسندگان
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