کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4514152 1624866 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vitis vinifera leaves towards bioactivity
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Vitis vinifera leaves towards bioactivity
چکیده انگلیسی

The majority of the works about Vitis vinifera L. (grape) focus their attention on wine or its major by-product, the grape pomace. Nevertheless, leaves of V. vinifera also constitute an important matrix of this agro-industry. In this study, the chemical composition and antioxidant potential of V. vinifera leaves from twenty Portuguese varieties (white and red) were evaluated for the first time, concerning their reducing total capacity, reducing power and DPPH radical scavenging capacity. The phenolics present in the aqueous extracts of V. vinifera leaves were trans-caffeoyltartaric and trans-coumaroyltartaric acids, myricetin-3-O-glucoside, quercetin-3-O-glucoside, quercetin-3-O-galactoside and kaempferol-3-O-glucoside, the last two compounds being the most predominant. Despite showing different activities profiles, all samples exhibited antiradical capacity against DPPH radical and reducing power in a concentration-dependent manner, with IC50 values below 800 μg/mL.The obtained results are encouraging, increasing the possibility of taking profit from the great wastes produced by the grapes processing industry.


► V. vinifera leaves present several phenolic acids and flavonoids.
► Quercetin-3-O-galactoside and kaempferol-3-O-glucoside, are the major phenolics.
► Extracts show high antiradical capacity against DPPH radical and reducing power.
► V. vinifera leaves could be a source of bioactive extracts for food, cosmetic or pharmaceutical industries.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 43, May 2013, Pages 434–440
نویسندگان
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