کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5133066 | 1492051 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved LC-MSn characterization of hydroxycinnamic acid derivatives and flavonols in different commercial mate (Ilex paraguariensis) brands. Quantification of polyphenols, methylxanthines, and antioxidant activity
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کلمات کلیدی
DADd.m.TheobromineTPTZFRAPAAPHABTSORACTPP2,2′-azobis(2-amidinopropane) dihydrochloride - 2،2'-azobis (2-آمیدین پروپان) دی هیدروکلراید2,4,6-tripyridyl-S-triazine - 2،4،6-tripyridyl-S-triazine6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid - 6-هیدروکسی-2،5،7،8-تترامیل کلرومان-2-کربوکسیلیک اسیدtheophylline - تئوفیلینTrolox Equivalents - ترولوکس معادلTrolox - ترولکسRetention time - زمان بازداریAntioxidant capacity - ظرفیت آنتی اکسیدانRelative abundance - فراوانی نسبیdry matter - ماده خشکMethylxanthines - متیل سلطانینTotal polyphenolic content - محتوای کل پلی فنلHydroxycinnamic acid derivatives - مشتقات اسید هیدروکسین کیمیاYerba mate - همسر YerbaCaffeine - کافئینferric reducing antioxidant power - کاهش قدرت آنتی اکسیدان آهن
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Yerba mate is a beverage rich in bioactive compounds popular in South America. Polyphenols and methylxanthines were qualitatively and quantitatively analyzed in four commercial brands of yerba mate, as well as the antioxidant capacity of the beverages. Using LC/MSn analysis, 58 polyphenols were observed of which 4-sinapoylquinic acid, di- and tri-methoxycinnamoylquinic acids, two isomers of trimethoxycinnamoylshikimic acid and four isomers of caffeoyl-2,7-anhydro-3-deoxy-2-octulopyranosonic acid were identified for the first time in mate. Additionally, 46 polyphenols and 2 methylxanthines were quantified by HPLC-DAD. Hydroxycinnamic acid derivatives and flavonols comprised 90% and 10% of mate phenols, respectively, 3-caffeoylquinic (26.8-28.8%), 5-caffeoylquinic (21.1-22.4%), 4-caffeoylquinic (12.6-14.2%) and 3,5-dicaffeoylquinic acids (9.5-11.3%) along with rutin (7.1-7.8%) were the most abundant polyphenols, whereas caffeine was the main methylxanthine (90%). Ilex paraguariensis is an important source of polyphenols with moderate methylxanthines content; therefore its high antioxidant capacity was mainly associated to its polyphenolic composition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 241, 15 February 2018, Pages 232-241
Journal: Food Chemistry - Volume 241, 15 February 2018, Pages 232-241
نویسندگان
Raquel Mateos, Gema Baeza, Beatriz Sarriá, Laura Bravo,