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Article: Frying Quality Characteristics of French Fries Prepared in Refined Olive Oil and Palm Olein

Article from:
JAOCS, Journal of the American Oil Chemists' Society
Article date:
September 1, 2009
Author:
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Abstract

The objective of this study was to compare two oils with different polyunsaturated/saturated (P/S) fatty acid ratios, refined olive oil (P/S 0.75) and palm olein (P/S 0.25), in frying French fries. The chemical qualities of the oil residues extracted from the French fries were assayed for five consecutive batches fried at 1-h intervals. The levels of total polar compounds, free fatty acids, p-anisidine value and phytosterol oxidation products (POPs) were elevated in French fries fried in both oils. The level of total polar compounds increased from 4.6 in fresh refined olive oil to 7.3% in final batches of French fries. The corresponding figures for palm olein were 9.8-13.8%. The ...

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