European Journal of Experimental Biology, ( ISI ), Volume (3), No (1), Year (2013-3) , Pages (38-41)

Title : ( Phenolics in Henna: Extraction and stability )

Authors: Zeinab Dezashibi , Azadeh Mohagheghi Samarin , Nima Hematyar , Mohammad Hossein Haddad khodaparast ,

Citation: BibTeX | EndNote

Abstract

This study was designed to examine the percentage y ield and total phenolic contents of various extract s (prepared by using solvents of varying polarity and different extraction methods) of Henna leaves. Total phenolic content in the extracts was determined spectrometrically apply ing the Folin-Ciocalteu assay and calculated as tan nic acid equivalents. Maximum amount of extract (24.83%) was obtained with water, followed by methanol (23.06%) and ethanol (13.25%), while the maximum amount of pheno lics (308.8 µg tannic acid equivalent per gramme of leaves) was obtained with methanol, followed by water (150. 3 µgTAE gdw −1 ) and ethanol (141.5 µgTAE gdw −1 ) using the ultrasound method. Using ultrasound increased the t otal phenolic compounds of the Henna leaves extract. The total phenolic content was not affected by storage in dar k conditions at -18 and 25 °C and in light conditio ns at 25 °C over a period of 10 days, while a significant reduc tion was observed for extracts at 25 °C either in d ark or light conditions after 20 days and for all the extracts after 30 days storage.

Keywords

, methanol extract, Henna leaves, sonication, phenolics ______________________________________________________
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@article{paperid:1035385,
author = {Zeinab Dezashibi and Azadeh Mohagheghi Samarin and Nima Hematyar and Haddad Khodaparast, Mohammad Hossein},
title = {Phenolics in Henna: Extraction and stability},
journal = {European Journal of Experimental Biology},
year = {2013},
volume = {3},
number = {1},
month = {March},
issn = {2248-9215},
pages = {38--41},
numpages = {3},
keywords = {methanol extract; Henna leaves; sonication; phenolics ______________________________________________________},
}

[Download]

%0 Journal Article
%T Phenolics in Henna: Extraction and stability
%A Zeinab Dezashibi
%A Azadeh Mohagheghi Samarin
%A Nima Hematyar
%A Haddad Khodaparast, Mohammad Hossein
%J European Journal of Experimental Biology
%@ 2248-9215
%D 2013

[Download]