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

Analyses of multivitamins in nutrace...

Huang, Hsiang-Chi.

FindBook

Google Book

Amazon

博客來

Analyses of multivitamins in nutraceuticals by reverse phase HPLC with DAD, ELSD and MS.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Analyses of multivitamins in nutraceuticals by reverse phase HPLC with DAD, ELSD and MS./
作者:	Huang, Hsiang-Chi.
面頁冊數:	129 p.
附註:	Source: Masters Abstracts International, Volume: 52-02.
Contained By:	Masters Abstracts International52-02(E).
標題:	Chemistry, Analytical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1544154
ISBN:	9781303336225

Analyses of multivitamins in nutraceuticals by reverse phase HPLC with DAD, ELSD and MS.
Huang, Hsiang-Chi.

Analyses of multivitamins in nutraceuticals by reverse phase HPLC with DAD, ELSD and MS. - 129 p.

Source: Masters Abstracts International, Volume: 52-02.

Thesis (M.S.)--Clemson University, 2013.

Vitamins are essential to human beings and support long-term healthy lifestyle. They exist widely in food, but in small amount. Hence, dietary supplements and fortified food products are more and more popular in the nutritional markets. According to the Infant Formula Act of 1980, the range of each of the nutrients should fall within a specific range or above the required minimum, so there is an increasing interest of accurate measurement of vitamins, particularly the B-group vitamins. However, traditional methods for vitamin B analyses are time-consuming and often in poor accuracy. As a result, rapid and reliable analytical methods for simultaneous determination of water-soluble vitamins in multivitamin and supplemented foods are important, indispensible and needed by food and nutraceutical industries for quality control during production, and for accurate evaluation of data and label clams.

ISBN: 9781303336225Subjects--Topical Terms:

586156
Chemistry, Analytical.

Analyses of multivitamins in nutraceuticals by reverse phase HPLC with DAD, ELSD and MS.
LDR:03150nam a2200301 4500 001 1967547
005 20141124080547.5
008 150210s2013 ||||||||||||||||| ||eng d
020 $a 9781303336225
035 $a (MiAaPQ)AAI1544154
035 $a AAI1544154
040 $a MiAaPQ $c MiAaPQ
100 1 $a Huang, Hsiang-Chi. $3 1264325
245 1 0 $a Analyses of multivitamins in nutraceuticals by reverse phase HPLC with DAD, ELSD and MS.
300 $a 129 p.
500 $a Source: Masters Abstracts International, Volume: 52-02.
500 $a Adviser: Feng Chen.
502 $a Thesis (M.S.)--Clemson University, 2013.
520 $a Vitamins are essential to human beings and support long-term healthy lifestyle. They exist widely in food, but in small amount. Hence, dietary supplements and fortified food products are more and more popular in the nutritional markets. According to the Infant Formula Act of 1980, the range of each of the nutrients should fall within a specific range or above the required minimum, so there is an increasing interest of accurate measurement of vitamins, particularly the B-group vitamins. However, traditional methods for vitamin B analyses are time-consuming and often in poor accuracy. As a result, rapid and reliable analytical methods for simultaneous determination of water-soluble vitamins in multivitamin and supplemented foods are important, indispensible and needed by food and nutraceutical industries for quality control during production, and for accurate evaluation of data and label clams.
520 $a Due to low concentrations of B8 and B9 in nature, there is a critical need for preconcentration to facilitate their isolation and purification from a complex matrix like food. In order to minimize the consumption of solvents, solid phase extraction (SPE) has been introduced for sample preparation. In this study, two types of SPE, i.e., reversed-phase C18 and strong anion-exchange phase, were used for sample clean-up and pre-concentration. The average recoveries for vitamin B3, B5, B7 and B9 were 101.3%, 102.9%, 92.8% and 102.6%, respectively, by using C18 SPE. In contrast, the strong anion-exchange SPE provided the average recoveries of B3, B5, B7 and B9 in 91.5%, 93.0%, 109.1% and 106.7%, respectively.
520 $a Furthermore, simultaneous determination of water-soluble vitamins was developed by a HPLC system installed with a ZORBAX Eclipse XDB-C18 (250mm x 4.6mm, 5 &mgr;m particle size, Aglient Technologies, Inc., Loveland, CO, USA) with a guard column (12.5mm x 4.6mm, 5 &mgr;m particle size), and compared by three detectors, including DAD, ELSD and MS. The B-complex supplement, multivitamin/multimineral tablets and powder and vitamin drink were tested to verify HPLC method. According to the results, LC-MS is the best to do the simultaneous determination of the B-group vitamins in lights of its analytical accuracy, precision, sensitivity and versatility.
590 $a School code: 0050.
650 4 $a Chemistry, Analytical. $3 586156
650 4 $a Agriculture, Food Science and Technology. $3 1017813
690 $a 0486
690 $a 0359
710 2 $a Clemson University. $b Food Science and Human Nutrition. $3 1278350
773 0 $t Masters Abstracts International $g 52-02(E).
790 $a 0050
791 $a M.S.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1544154