Title: Entropy generation behaviour of the lean and obese rats shows the effect of the diet on the wasted life span work

Authors: Ayşe Selcen Semerciöz; Bayram Yılmaz; Mustafa Özilgen

Addresses: Department of Food Engineering, Yeditepe University, 34755 Kayisdagi, Istanbul, Turkey ' Faculty of Medicine, Department of Physiology, Yeditepe University, 34755 Istanbul, Turkey ' Department of Food Engineering, Yeditepe University, Istanbul, Turkey

Abstract: Entropy generation behaviour of the rats is affected by their diet and nature of being lean or obese. Thermodynamic analyses showed that the obese Zucker rats may generate 22,092 kJ/K of life span entropy when fed soybean oil diet and 38,718 kJ/K of entropy when fed with butter fat. Their lean counterparts may generate 15,314 kJ/K of life span entropy when fed with soybean oil diet and 47,657 kJ/K of entropy and when fed with butter fat diet. The lean Zucker rats fed with butter fat diet had 92%, while the obese Zucker rats fed with soybean oil diet had 72%, wasted life-time work potential. Obese Zucker rats fed with butter fat diet performed approximately 48% more total physical work and generated 48% more muscular heat through their life span than the lean rats fed with soybean oil diet.

Keywords: obese rats; life span entropy; exergy analysis; muscle work efficiency; lost work potential.

DOI: 10.1504/IJEX.2018.093148

International Journal of Exergy, 2018 Vol.26 No.3, pp.359 - 391

Received: 06 Feb 2018
Accepted: 20 Apr 2018

Published online: 29 Jun 2018 *

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