EFFECT OF BLACK TEA, COFFEE AND CAFFEINE ON SERUM LIPID PROFILES IN RATS | ||||
| Journal of Food and Dairy Sciences | ||||
| Article 3, Volume 28, Issue 1, January 2003, Page 423-431 PDF (2.69 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jfds.2003.242211 | ||||
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| Authors | ||||
| Azza A Bakry,1; S. M. Shalaby2 | ||||
| 1Special Food and Nutr., Food Tech. Res. Inst., ARC, Giza, Egypt. | ||||
| 2Home Econ. Dept., Fac. Specific Education, Tanta Univ., Egypt. | ||||
| Abstract | ||||
| The relationship between black tea, coffee and caffeine consumption and serum lipids was examined in eight comparison groups of albino rats of eight weeks old in a range weight between 128-131 g. Animals given diets for a dditional four weeks. It contained either black tea or coffee or caffeine (123.3 mg caffeine/100 g diet or 76.8 mg caffeine/100 g diet) without or plus cholesterol (1%), bile salts (0.2%) and tallow (20%). The mean final body weights gain were not changed (P ~ 0.05) in all groups exception of coffee group which decreased significantly. The rats fed on diet of coffee or caffeine (123.3 mg/100 g) had no significant elevation of total cholesterol, triglycerides, HDL-cholesterol and LDL-cholesterol compared to the negative control (without cholesterol). Whereas total cholesterol, triglycerides and LDL-cholesterol had significant increase in coffee plus cholesterol group and caffeine (123.3 mg/100 g diet) group compared the positive control (hepercholesteroJemic) group. There was no significant differences in group 7 (black tea plus cholesterol) and group 8 (caffeine 76.8 mg/100 diet) compared to the positive control. The ratio of HDL-cholesterol to total cholesterol and HDL-cholesterol to LDL-cholesterol were lower (P ~ .0.05) in group: 5, 6,4 (coffee plus cholesterol, caffeine 123.3mg/100 g diet plus cholesterol and positive control), respectively. In conclusion, these findings suggest that black tea, coffee and caffeine did not increase the serum lipids in rats consumed the normal balanced diet. Whereas coffee and high concentrations of caffeine led to raise the serum lipids in rats fed on high fat and high cholesterol diet. Black tea had no effect on serum lipids in rats fed on normal or hyperlipidemic diet. | ||||
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