کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8881345 | 1624881 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Identification and characterization of phenolic compounds extracted from barley husks by LC-MS and antioxidant activity in vitro
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
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چکیده انگلیسی
Phenolic compounds were extracted from Tunisian barley husks obtained through a pearling process, by using two different extraction solvents: acid treatment with sulfuric acid and alkaline delignification with sodium hydroxide. Their antioxidant properties in vitro were investigated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging test and butylated hydroxyanisole (BHA). Antioxidants composition was evaluated with LC-MS analysis. Results suggest that the best yield of crude extracts with high level of phenolic compounds exhibiting strong antioxidant activities were found after pre-hydrolysis and delignification step of barley husks. The lowest average total phenolic content found was 763.665â¯mg/100â¯g, presenting an EC50 value of 0.93â¯g/L, four higher antioxidant levels than BHA (0.24â¯g/L). All extracted fractions showed high contents of p-coumaric acid (â¥491.189â¯mg/100â¯g), trans-ferulic acid (â¥501.475â¯mg/100â¯g) and syringic acid (â¥192.228â¯mg/100â¯g). These results contribute to enhancing the value of barley husks as a good source of natural antioxidants, which serve as new functional food ingredients and dietary supplements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cereal Science - Volume 81, May 2018, Pages 83-90
Journal: Journal of Cereal Science - Volume 81, May 2018, Pages 83-90
نویسندگان
Teber Hajji, Sonia Mansouri, Xanel Vecino-Bello, José Manuel Cruz-Freire, Salah Rezgui, Ali Ferchichi,