Headspace solid-phase microextraction applied to the simultaneous determination of Sorbic and Benzoic acid in beverages / Hairunnisa Mohd Anas Khan

Mohd Anas Khan, Hairunnisa (2008) Headspace solid-phase microextraction applied to the simultaneous determination of Sorbic and Benzoic acid in beverages / Hairunnisa Mohd Anas Khan. Student Project. Faculty of Applied Sciences, Shah Alam. (Unpublished)

[img]
Preview
Text
PPb_HAIRUNNISA MOHD ANAS KHAN AS SA 08_5.pdf

Download (287kB) | Preview

Abstract

An alternative method was applied using headspace solid-phase microextraction (HS-SPME) for simultaneous determination of sorbic and benzoic acid in beverages. The samples were pretreated with NaOH and fitered through 0.45μm membrane filter, placed in 12ml amber vial and heat with the addition with anhydrous sodium sulfate and sulfuric acid. The sorbic and benzoic acid were extracted in the headspace by using 85 μm polyacrylate fiber and further examined by gas chromatography with flame ionization (FID) detector. The sensitivity of the fiber was enhanced through the optimization of extraction and desorption temperature. The linear range of analytes was found to be between 0.2 L g to 1.0 L g with regression coefficient 0.9943 for sorbic acid and 1.000 for benzoic acid. In this analysis, the three concentrated juices were found to be below the Malaysian permitted level of preservatives food act.

Item Type: Monograph (Student Project)
Creators:
CreatorsEmail
Mohd Anas Khan, HairunnisaUNSPECIFIED
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Applied Sciences
Item ID: 825
Uncontrolled Keywords: Headspace solid-phase microextraction, HS-SPME, Solid phase microextractio, SPME, sorbic, benzoic acid, beverages, preservatives
Last Modified: 06 Sep 2018 07:55
Depositing User: Staf Pendigitalan 1
URI: http://ir.uitm.edu.my/id/eprint/825

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year