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Ethanol and supercritical fluid extr...

Sun, Li.

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Ethanol and supercritical fluid extraction of Echinacea angustifolia roots.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Ethanol and supercritical fluid extraction of Echinacea angustifolia roots./
Author:	Sun, Li.
Description:	111 p.
Notes:	Source: Masters Abstracts International, Volume: 41-01, page: 0113.
Contained By:	Masters Abstracts International41-01.
Subject:	Agriculture, Food Science and Technology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ69815
ISBN:	9780612698154

Ethanol and supercritical fluid extraction of Echinacea angustifolia roots.
Sun, Li.

Ethanol and supercritical fluid extraction of Echinacea angustifolia roots. - 111 p.

Source: Masters Abstracts International, Volume: 41-01, page: 0113.

Thesis (M.Sc.)--University of Alberta (Canada), 2001.

Echinacoside and cynarine in dried Echinacea angustifolia roots were extracted using pure ethanol (100%) at 25, 50 and 75°C for 30, 60 and 90 min with solvent to feed ratios of 20:1 and 10:1. Echinacoside and cynarine yields were significantly affected (p ≤ 0.05) by all three variables and increased with increasing temperature and time. Higher solvent to feed ratio generally resulted in higher yields. The highest echinacoside and cynarine yields obtained were 0.82% and 1.10%, respectively.

ISBN: 9780612698154Subjects--Topical Terms:

1017813
Agriculture, Food Science and Technology.

Ethanol and supercritical fluid extraction of Echinacea angustifolia roots.
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035 $a (UnM)AAIMQ69815
035 $a AAIMQ69815
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100 1 $a Sun, Li. $3 1278981
245 1 0 $a Ethanol and supercritical fluid extraction of Echinacea angustifolia roots.
300 $a 111 p.
500 $a Source: Masters Abstracts International, Volume: 41-01, page: 0113.
502 $a Thesis (M.Sc.)--University of Alberta (Canada), 2001.
520 $a Echinacoside and cynarine in dried Echinacea angustifolia roots were extracted using pure ethanol (100%) at 25, 50 and 75°C for 30, 60 and 90 min with solvent to feed ratios of 20:1 and 10:1. Echinacoside and cynarine yields were significantly affected (p ≤ 0.05) by all three variables and increased with increasing temperature and time. Higher solvent to feed ratio generally resulted in higher yields. The highest echinacoside and cynarine yields obtained were 0.82% and 1.10%, respectively.
520 $a Alkylamides in fresh and dried E. angustifolia roots were extracted using supercritical carbon dioxide at 45, 60°C and 34, 55 MPa. Alkylamide yield of fresh roots increased with increasing temperature but decreased with increasing pressure while those from ground air-dried roots increased with higher temperature and pressure. The latter yielded the highest alkylamides as compared with those from fresh or unground dried roots. The use of freeze-dried roots did not give better extraction results as compared to air-dried roots for echinacoside, cynarine and alkylamides.
590 $a School code: 0351.
650 4 $a Agriculture, Food Science and Technology. $3 1017813
690 $a 0359
710 2 0 $a University of Alberta (Canada). $3 626651
773 0 $t Masters Abstracts International $g 41-01.
790 $a 0351
791 $a M.Sc.
792 $a 2001
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ69815