東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Reversed-phase HPLC determination of...

AL-Shaer, Mahmoud.

FindBook

Google Book

Amazon

博客來

Reversed-phase HPLC determination of citral in locally grown lemon grass harvested at different seasons.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Reversed-phase HPLC determination of citral in locally grown lemon grass harvested at different seasons./
作者:	AL-Shaer, Mahmoud.
面頁冊數:	61 p.
附註:	Source: Masters Abstracts International, Volume: 44-06, page: 2797.
Contained By:	Masters Abstracts International44-06.
標題:	Chemistry, Analytical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1436242
ISBN:	9780542725616

Reversed-phase HPLC determination of citral in locally grown lemon grass harvested at different seasons.
AL-Shaer, Mahmoud.

Reversed-phase HPLC determination of citral in locally grown lemon grass harvested at different seasons. - 61 p.

Source: Masters Abstracts International, Volume: 44-06, page: 2797.

Thesis (M.S.)--East Tennessee State University, 2006.

A simple HPLC procedure for the quantitative determination of citral, the major fragrant component in the lemon grass, has been developed. The procedure involves a C-8 stationary phase using a 90:10 methanol: water pH 5 mobile phase containing 0.25% 1-octanesulfonic acid and an UV detector (set at 233 nm). The lemon grass leaves were harvested fresh at different times of the year and were soaked in methanol for 48 hours without any mechanical assistance to extract the citral and other methanol soluble components. The method showed good reproducibility with relative standard deviation of 2.8% and 10.8% for two different sets of samples. The method showed linearity in the range of 0.89--35.52 mug/mL. The average recovery was 104.8%. The amount of citral found as a percentage of the dried leaves are, 0.093, 0.27, 0.10, 0.13, 0.16, and 0.066 for fall, winter, three summer, and 1 commercial store samples, respectively.

ISBN: 9780542725616Subjects--Topical Terms:

586156
Chemistry, Analytical.

Reversed-phase HPLC determination of citral in locally grown lemon grass harvested at different seasons.
LDR:01817nmm 2200277 4500 001 1831525
005 20070511144458.5
008 130610s2006 eng d
020 $a 9780542725616
035 $a (UnM)AAI1436242
035 $a AAI1436242
040 $a UnM $c UnM
100 1 $a AL-Shaer, Mahmoud. $3 1920308
245 1 0 $a Reversed-phase HPLC determination of citral in locally grown lemon grass harvested at different seasons.
300 $a 61 p.
500 $a Source: Masters Abstracts International, Volume: 44-06, page: 2797.
500 $a Adviser: Chu Ngi Ho.
502 $a Thesis (M.S.)--East Tennessee State University, 2006.
520 $a A simple HPLC procedure for the quantitative determination of citral, the major fragrant component in the lemon grass, has been developed. The procedure involves a C-8 stationary phase using a 90:10 methanol: water pH 5 mobile phase containing 0.25% 1-octanesulfonic acid and an UV detector (set at 233 nm). The lemon grass leaves were harvested fresh at different times of the year and were soaked in methanol for 48 hours without any mechanical assistance to extract the citral and other methanol soluble components. The method showed good reproducibility with relative standard deviation of 2.8% and 10.8% for two different sets of samples. The method showed linearity in the range of 0.89--35.52 mug/mL. The average recovery was 104.8%. The amount of citral found as a percentage of the dried leaves are, 0.093, 0.27, 0.10, 0.13, 0.16, and 0.066 for fall, winter, three summer, and 1 commercial store samples, respectively.
590 $a School code: 0069.
650 4 $a Chemistry, Analytical. $3 586156
650 4 $a Chemistry, Agricultural. $3 1021829
690 $a 0486
690 $a 0749
710 2 0 $a East Tennessee State University. $3 1017802
773 0 $t Masters Abstracts International $g 44-06.
790 1 0 $a Ho, Chu Ngi, $e advisor
790 $a 0069
791 $a M.S.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1436242