Ethylacetate Flavonoid Bio-compounds of Honey with Mitigating Anti-hyperlipidemic and Antioxidant Properties in Carbohydrate and Lipid Enriched Diets – Obese Rats
Idoko Alexander *
Department of Biochemistry, Faculty of Natural Sciences, Caritas University, Amorji-Nike, PMB 01784 Enugu, Nigeria and Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka, Nigeria.
Parker Joshua Elijah
Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka, Nigeria.
Njoku Obioma Uzoma
Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Honey is a rich material source of medicinal nutrients. This study investigated the hypolipidemic and antioxidant effects of honey, 50% fresh lime juice, and 50% honey (MIX) and ethylacetate flavonoid-rich fraction of honey (EAFH) in carbohydrate and lipid-enriched diets-obese rats.
At phase 1, 54 male neonate Wistar albino rats were, divided into 3 groups of 18 rats. Groups 2 and 3 were fed a carbohydrate-enriched diet (CHD) and lipid-enriched diet (LP) for 14 days, and rats with Lee index ≥ 0.3 were considered obese. Rats (phase-2) were regrouped into 7 groups of 6 rats, and treated with honey, MIX, and EAFH. Flavonoids bio-compounds in EAFH characterized by HPLC (High-performance liquid chromatography) include; gallic acid, epigallocatechin, napthoresorcinol, and quercetin. Lee's index after obesity induction was ≥ 0.3. Adiposity index, diet intake, and body and organ weight of obese rats were significantly (p < 0.05) reduced after honey, MIX, and EAFH treatments compared to control. Significant (p < 0.05) decreased concentrations of glucose, leptin, insulin, low-density lipoprotein (LDL), total cholesterol (TC), triacylglycerol (TAG), very low-density lipoprotein (VLDL), 3-Hydroxy-3-methylglutaryl (HMG) coenzyme A (CoA) reductase activity (HMGCOARA), atherogenic risk index (ARI) and coronary risk index (CRI) and increase in high-density lipoprotein (HDL) after treatment with honey, MIX and EAFH was observed compared control and AOI. Antioxidant parameters of obese rats were significantly (p < 0.05) improved compared to control and AOI rats. Honey could serve as a model pharmacotherapy for treating dyslipidemia and oxidative stress linked to obesity.
Keywords: Hypolipidemic, hyperlipidemic, flavonoids, obesity, hypoglycemic, hyperglycemia