Lipid peroxidation in culinary oils subjected to thermal stress

Abstract

The levels of cytotoxic aldehydic products in different culinary oils, with or without thermal stress, (routine domestic or commercial frying) were determined by thiobarbituric acid method. The results showed that (i) thiobarbituric acid reactivity was much higher in edible oils rich in polyunsaturated fatty acids than those rich in saturated fatty acids or monounsaturated fatty acids, even without thermal stress, (ii) the lipid peroxide levels were in proportion to the duration of thermal stress, (iii) nature of the container used (steel, iron or teflon-coated) had no significant effect on the extent of lipid peroxidation under identical conditions of thermal stress and (iv) thermally stressed oils collected from hotels and roadside caterers contained higher levels of cytotoxic aldehydic products, when compared to oils thermally stressed under domestic frying conditions. These results suggest that dietary ingestion of thermally or autoxidatively stressed polyunsaturated fatty acid rich culinary oils is more harmful compared with those similarly treated oils rich in saturated fatty acids and monounsaturated fatty acids.

Lipid peroxidation of fish oils

“…Many humans are continually exposed to oxidized oils and fats in their diet which arise from either shallow or deep fat frying processes and the possibility that regular consumption of such products may be deleterious to human health, has attracted much interest (6)(7)(8). Based on the above reports, it was considered essential to determine the level of thiobarbituric acid (TBA) reactive material (Lipid peroxide level) present in the fish oils available in the market with and without Vitamin E supplementation.…”

A comprehensive review on the techniques for coconut oil extraction and its application

“…As more than 80% of the fats in coconut oil is saturated, coconut oil is suitable to be used for high temperature cooking. Saturated fats will retain their structure even when heated to high temperatures unlike polyunsaturated fatty acids found in vegetable oils [ 53 ]. Coconut oil is also able to increase our dental health as it destroys bacteria in our month, such as Streptococcus mutans , the bacteria that causes many dental diseases, such as dental plaque, tooth decay and gum disease.…”

“…Coconut oil is also able to increase our dental health as it destroys bacteria in our month, such as Streptococcus mutans , the bacteria that causes many dental diseases, such as dental plaque, tooth decay and gum disease. When swished with coconut oil for 10 min, the bacteria in our mouth will be reduced as much as rinsing with an antiseptic mouthwash [ 49 , 53 ]. The antifungal and anti-bacterial properties of coconut oil make it an excellent wound salve.…”

Autoxidation of glycols used in inhalable daily products: implications for the use of artificial fogs and e-cigarettes

“…29 Autoxidation is rst known in the condensed phase, which is the cause of the deterioration of many daily consumables, such as cooking oil 30,31 and foods. 32,33 A decade ago, gas-phase autoxidation of VOCs was discovered by Crounse et al. 34 Soon, this process was identied as the critical process to produce highly oxygenated organic molecules, including the production of carbonyls and organic acids from biogenic gaseous monoterpenes.…”