Cover Image

Application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis

A study was conducted to differentiate lard from selected animal fats namely chicken fat, beef fat and mutton fat, before and after chemical glycerolysis. It was carried out using Gas Chromatography Mass Spectrometry (GCMS) and Elemental Analyzer–Isotope Ratio Mass Spectrometry (EA-IRMS) techniques....

Full description

Saved in:
Bibliographic Details
Main Author: Ahmad Nizar, Nina Naquiah
Format: Thesis
Language:English
Published: 2013
Online Access:http://psasir.upm.edu.my/id/eprint/67236/1/IPPH%202013%203%20IR.pdf
http://psasir.upm.edu.my/id/eprint/67236/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.upm.eprints.67236
record_format eprints
spelling my.upm.eprints.672362019-02-21T08:21:33Z http://psasir.upm.edu.my/id/eprint/67236/ Application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis Ahmad Nizar, Nina Naquiah A study was conducted to differentiate lard from selected animal fats namely chicken fat, beef fat and mutton fat, before and after chemical glycerolysis. It was carried out using Gas Chromatography Mass Spectrometry (GCMS) and Elemental Analyzer–Isotope Ratio Mass Spectrometry (EA-IRMS) techniques. The comparison of overall fatty acid data obtained by Gas Chromatography analysis before and after chemical glycerolysis showed that lard and chicken fats shared common characteristics by having palmitic, oleic and linoleic acids as major fatty acids. On the other hand, beef and mutton fats shared common characteristics by possessing palmitic, stearic and oleic acid as major fatty acids. Direct comparisons among the fatty acid data therefore may not be suitable for differentiation of animal fats. When the fatty acid distributional data of the animal fats was subjected to Principle Component Analysis (PCA), it was demonstrated that stearic, oleic and linoleic acids were the most discriminating parameters in the clustering of animal fats to four subclasses. The stable isotope analysis of lard and selected animal fats before chemical glycerolysis using EA-IRMS showed significant difference in the carbon isotope ratios (δ13C). The same finding was observed after chemical glycerolysis. This would be a good indicator in discrimination of lard, chicken, beef and mutton fats. The current finding leads to a more efficient method, to screen and ascertain the source of origin of fats used in food products. 2013-07 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/67236/1/IPPH%202013%203%20IR.pdf Ahmad Nizar, Nina Naquiah (2013) Application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis. Masters thesis, Universiti Putra Malaysia.
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A study was conducted to differentiate lard from selected animal fats namely chicken fat, beef fat and mutton fat, before and after chemical glycerolysis. It was carried out using Gas Chromatography Mass Spectrometry (GCMS) and Elemental Analyzer–Isotope Ratio Mass Spectrometry (EA-IRMS) techniques. The comparison of overall fatty acid data obtained by Gas Chromatography analysis before and after chemical glycerolysis showed that lard and chicken fats shared common characteristics by having palmitic, oleic and linoleic acids as major fatty acids. On the other hand, beef and mutton fats shared common characteristics by possessing palmitic, stearic and oleic acid as major fatty acids. Direct comparisons among the fatty acid data therefore may not be suitable for differentiation of animal fats. When the fatty acid distributional data of the animal fats was subjected to Principle Component Analysis (PCA), it was demonstrated that stearic, oleic and linoleic acids were the most discriminating parameters in the clustering of animal fats to four subclasses. The stable isotope analysis of lard and selected animal fats before chemical glycerolysis using EA-IRMS showed significant difference in the carbon isotope ratios (δ13C). The same finding was observed after chemical glycerolysis. This would be a good indicator in discrimination of lard, chicken, beef and mutton fats. The current finding leads to a more efficient method, to screen and ascertain the source of origin of fats used in food products.
format Thesis
author Ahmad Nizar, Nina Naquiah
spellingShingle Ahmad Nizar, Nina Naquiah
Application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis
author_facet Ahmad Nizar, Nina Naquiah
author_sort Ahmad Nizar, Nina Naquiah
title Application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis
title_short Application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis
title_full Application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis
title_fullStr Application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis
title_full_unstemmed Application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis
title_sort application of gas chromatography-mass spectrometry and elemental analyzer-isotope ratio mass spectrometry techniques to distinguish lard from selected animal fats before and after chemical glycerolysis
publishDate 2013
url http://psasir.upm.edu.my/id/eprint/67236/1/IPPH%202013%203%20IR.pdf
http://psasir.upm.edu.my/id/eprint/67236/
_version_ 1643838844334768128
score 13.211869

Similar Items