Title of article
Optimization of extraction methods for total polyphenolic compounds obtained from rhizomes of Zingiber officinale
Author/Authors
Eberle ، Lida - Odessa I.I.Mechnikov National University , Kobernik ، Alena - Odessa I.I.Mechnikov National University , Aleksandrova ، Aleksandra - Odessa I.I.Mechnikov National University , Kravchenko ، Iryna - Odessa I.I.Mechnikov National University
Pages
6
From page
37
To page
42
Abstract
In an alternative medicine, aqueous extracts and decoctions of the ginger root (Ginger- Zingiber officinale Roscoe L., Ginger family Zingiberaceae) are used as antibacterial, diaphoretic, analgesic, anti-emetic and anti-inflammatory drugs. The aim of this study was to determine the optimal method and conditions of total polyphenolic compounds (TPC) extraction from ginger roots using ethanol as the solvent. The ethanol extracts were obtained by several extraction methods involving maceration, Soxhlet apparatus and ultrasound. TPC and total flavonoids (TF) were determined spectrophotometrically using the Folin-Ciocalteu method. It was found that the highest content of TPC and TF is obtained after sonication followed by subsequent maceration for a period of ten for TPC and seven days for TF, with a yield of 2.48 ± 0.029% and 1.3 ± 0.08% (per 1 g of dry substance), respectively. Optimal extraction conditions were found with ethanol (70%) and a ratio raw material/solvent of 1:1.
Keywords
Zingiber officinale , Extraction methods , Polyphenolic compounds , Flavonoids , phytochemical analysis
Journal title
Trends in Phytochemical Research
Serial Year
2018
Journal title
Trends in Phytochemical Research
Record number
2470462
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