Sompop Jarathsuthitham. Effect of conventional cooking methods on CoQ10 contents in selected animals and vegetable oils, and bioavailability of commercial CoQ10 solution evaluated in rats . Master's Degree(Food and Nutrition for Development). Mahidol University. : Mahidol University, 2004.
Effect of conventional cooking methods on CoQ10 contents in selected animals and vegetable oils, and bioavailability of commercial CoQ10 solution evaluated in rats
Abstract:
This study was divided into 2 parts: Part I aimed to determine CoQ10 content in selected animal products and vegetable oils and investigate the effectsof conventional cooking: boiling, steaming and grilling, commonly used in Thailandon each selected animal product. The findings (based on wet basis) showed that beef, ostrich, chicken and pork are the good sources of CoQ10 ranging from 27.8-29.8, 20.0, 8.6-19.7 and 8.7-13.0 μg/g respectively. In the marine fish group, the high-fat fish, black-banned trevalley and short-bodied mackerel highest contain CoQ10 content (12.0 and 6.1 μg/g respectively), and in the fresh water fish group, the high-fat fish like walking catfish contains the highCoQ10 content (10.0 μg/g) while striped snake head fish contains lower CoQ10 content (4.8 μg/g). As for oil analysis, the highest CoQ10 content is present in corn oil (27.8 μg/g), and soybean oil (23.3 μg/g).
The analytical data in part I indicated that total CoQ10 content in all animal products remained virtually unchanged after cooking.
Part II aimed to determine bioavailability of commercial CoQ10 solution in water-soluble form in rats,compared between supplemented and non-supplemented groups during one week of supplementation. The findings showed, in the supplemented group, supplemented CoQ10 could elevate CoQ10 content in blood and liver tissue but not in the heart. Comparison between 3 and 7 days of supplementation showed7 days of CoQ10 supplementation not only increased total content but also reduced and oxidized forms of CoQ10 content in blood (almost 4 fold). Moreover, in liver tissue, supplemented CoQ10 causedalmost a 3 fold increase in total CoQ10 and a 5 fold increase in reduced form. This could suggest that the longer the period of supplementation, the higher the reducing activity, for higher CoQ10 reduced form, resulted in a higher ratio of reduced/oxidized CoQ10. No decrease or increase of CoQ9: the preeminent homologue in rats, was found in this study