TLC determination of flavonoids from different cultivars of Allium cepa and Allium ascalonicum.

نویسندگان

  • Loretta Pobłocka-Olech
  • Daniel Głód
  • Maria E Żebrowska
  • Małgorzata Sznitowska
  • Miroslawa Krauze-Baranowska
چکیده

This study comprises the optimization and validation of a new TLC method for determination of flavonols in the bulbs of seven cultivars of onions and shallots. Separation was performed on RP-18 plates with the solvent mixture tetrahydrofuran/water/formic acid (40+60+6, V/V/V) as a mobile phase. The method was evaluated for precision, linearity, LOD, LOQ, accuracy and robustness. Chromatographic analysis of the extracts revealed the presence of three main flavonols, quercetin, quercetin-4'-O-glucoside and quercetin-3,4'-O-diglucoside in the majority of analyzed cultivars. The content of flavonols in the analyzed extracts of onion bulbs varied from 123 ('Exihibition') to 1079 mg kg-1 fresh mass (fm) ('Hybing') in edible parts, and from 1727 ('Hyline') to 28949 mg kg-1 fm ('Red Baron') in outer scales. The bulbs of two shallot cultivars contained 209 ('Ambition') and 523 mg kg-1 fm ('Matador') of flavonols in edible parts and 5426 and 8916 mg kg-1 fm in outer scales, respectively.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Preliminary Phytochemical Investigation and Wound Healing Activity of Allium Cepa Linn (liliaceae)

To screen the wound healing activity of different extracts of Allium cepa L. in excision, incision and dead space wound models in albino rats. The tubers of Allium cepa L. (Family Liliaceae) were exhaustively defatted with petroleum ether (40-60C) and the marc was subjected to continuous extraction with solvent ether, chloroform, alcohol and chloroform water I.P. All the extracts were tested fo...

متن کامل

Comparative evaluation of quercetin content in three varieties of Allium cepa using TLC densitometry

Introduction: Herbal medicines are known for their multiple compounds which are responsible for their bioactivity. This creates a challenge in establishing quality control standards for raw materials and the standardization of finished herbal drugs. Currently, there is a common practice of selecting one or more compounds as markers for purposes of identification and quality assessment. In the p...

متن کامل

Chemical composition, antibacterial and antioxidant activities of six essentials oils from the Alliaceae family.

Six essential oils (EOs) from the Alliaceae family, namely garlic (Allium sativum), onion (Allium cepa), leek (Allium porrum), Chinese chive (Allium tuberosum), shallot (Allium ascalonicum) and chive (Allium schoenoprasum) were characterized by GC and GC-MS and evaluated for their functional food properties. Antibacterial properties were tested on five food-borne pathogens: Two Gram-positive St...

متن کامل

Shallots in Croatia – genetics, morphology and nomenclature

The term 'shallot' in Croatia denotes three genetically and morphologically different, vegetatively reproduced relatives of the common onion, Allium cepa L., which are mainly traditionally cultivated for consumption and as a spice: A. cepa Aggregatum group, (2n = 2x = 16), A. × proliferum (Moench) Schrad. (2n = 2x = 16) and A. × cornutum Clementi ex Vis. (2n = 3x = 24). This paper reviews the r...

متن کامل

Spice plant Allium cepa: dietary supplement for treatment of type 2 diabetes mellitus.

OBJECTIVE Diabetes mellitus (DM) is associated with significant morbidity and mortality and its prevalence is increasing worldwide. Although conventional antidiabetic agents are known to ameliorate the symptoms of diabetes, they also may cause adverse effects. The purpose of this review was to organize and discuss various studies that have been previously conducted indicating the efficacy of Al...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Acta pharmaceutica

دوره 66 4  شماره 

صفحات  -

تاریخ انتشار 2016