Determination of fatty acid in fresh cooking oil and used cooking oil using gas chromatography equipped with flame ionization detector (GC-FID) and gas chromatography equipped with mass spectrometry detector (GS-MSD) / Nur Fatima Mohd Arsad

Mohd Arsad, Nur Fatima (2018) Determination of fatty acid in fresh cooking oil and used cooking oil using gas chromatography equipped with flame ionization detector (GC-FID) and gas chromatography equipped with mass spectrometry detector (GS-MSD) / Nur Fatima Mohd Arsad. [Student Project] (Unpublished)

Abstract

Fatty acid in fresh and used (a few times) cooking oil used were determined by using gas chromatography flame ionization detector (GC-FID) and gas chromatography mass spectrometry detector (GC-MSD). The injector port and detector temperature for GC-FID analysis was 250 °C with 70.0 mLs- 1 carrier gas flow, while for GC-MSD analysis, the injector port and detector temperature were 200 °C and 300 °C respectively with 1.0 mLmin-1 carrier gas flow. The concentration of fatty acid in different samples were determined for methyl laurate, methyl myristate, methyl palmitate, methyl stearate and methyl linoleate. The concentration were compared between fresh cooking oil and oil that had been used for five times. The cooking oil for FRESH sample has the highest amount of fatty acids which were methyl laurate (71.3 ppm), methyl myristate (1505.7 ppm), methyl palmitate (355973.7 ppm), methyl stearate (63702.7 ppm) and methyl linoleate (12894.6 ppm). The cooking oil for COOK4 sample which had been used for four times has the lowest amount of fatty acids which were methyl laurate (14.5 ppm), methyl myristate (203.3 ppm), methyl palimtate (43635.8 ppm), methyl stearate (7265.1 ppm) and methyl linoleate (2074.6 ppm). Based on this study, as the number of times the oil was used increased, the fatty acid content decreased but at the second time frying, the fatty acid content increased followed by decreasing at fourth time frying.

Metadata

Item Type: Student Project
Creators:
Creators
Email / ID Num.
Mohd Arsad, Nur Fatima
UNSPECIFIED
Contributors:
Contribution
Name
Email / ID Num.
Thesis advisor
Abdullah Munir, Zuraidah (Assoc. Prof.)
UNSPECIFIED
Subjects: Q Science > QC Physics > Electricity and magnetism > Electricity
Q Science > QC Physics > Electricity and magnetism
Q Science > QD Chemistry > Analytical chemistry > Quantitative analysis > Electrochemical analysis
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Applied Sciences
Programme: Bachelor of Science (Hons.) Chemistry
Keywords: Gas chromatography flame ionization detector (GC-FID), Gas chromatography mass spectrometry detector (GC-MSD), Fatty acid
Date: 2018
URI: https://ir.uitm.edu.my/id/eprint/45526
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