alexa Polyphenol-rich Blackcurrant Pomace Counteracts Impaired Antioxidant Status and Serum Lipid Profile in Rabbits Fed a Diet High in Unsaturated Fat
ISSN: 2155-9600

Journal of Nutrition & Food Sciences
Open Access

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Research Article

Polyphenol-rich Blackcurrant Pomace Counteracts Impaired Antioxidant Status and Serum Lipid Profile in Rabbits Fed a Diet High in Unsaturated Fat

Julia Jaroslawska1*, Jerzy Juskiewicz1, Zenon Zdunczyk1 and Paulius Matusevicius2

1Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences, 10 Tuwima Street, 10-747 Olsztyn, Poland

2Lithuanian University of Health Sciences, Lithuanian Veterinary Academy, 18 Tilžes, 47-181 Kaunas, Lithuania

*Corresponding Author:
Julia Jaroslawska
Department of Biological Function of Food
Division of Food Science
Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences
10 Tuwima Street, 10-748 Olsztyn, Poland
Tel: 48895234601
E-mail: [email protected]

Received date: June 21, 2016; Accepted date: July 07, 2016; Published date: July 13, 2016

Citation: Jaroslawska J, Juskiewicz J, Zdunczyk Z, Matusevicius P (2016) Polyphenol-rich Blackcurrant Pomace Counteracts Impaired Antioxidant Status and Serum Lipid Profile in Rabbits Fed a Diet High in Unsaturated Fat. J Nutr Food Sci 6:531. doi: 10.4172/2155-9600.1000531

Copyright: © 2016 Jaroslawska J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Blackcurrant pomace, a by-product of juice fabrication with promising health benefits, is currently an unutilized nutritional resource. In the presented study an influence of dietary supplementation with blackcurrant pomace, constituting a source of antioxidant phytochemicals and fiber, on selected metabolic biomarkers of rabbits was evaluated. A 28-d experiment carried out on 34-d old rabbits addressed the analysis of physiological properties of two types of diet, standard chow and with additional 10% of lard, each supplemented with unprocessed blackcurrant pomace rich in polyphenols or a processed one, partly deprived of polyphenolic fraction. Twenty rabbits were allocated to four groups fed the following diets: Standard chow +15% of either unprocessed or processed blackcurrant pomace or lard-enriched diet +15% of either unprocessed or processed blackcurrant pomace. Irrespectively of the diet type, inclusion of unprocessed, compared to processed blackcurrant pomace, significantly improved antioxidant status of rabbits expressed by lower level of substances reacting with thiobarbituric acid (TBARS) in the liver and kidneys, as well as higher level of serum total antioxidant status (TAS), integral antioxidant capacities of hydrophilic (ACW) and lipophilic (ACL) substances. Upon lard-enriched diet, unprocessed blackcurrant abundant in polyphenols affected more beneficially serum triacylglycerides (TAG), total cholesterol (TC) and insulin levels. The antioxidant, hypolipidemic and hypoinsulinemic action of the blackcurrant supplement should be ascribed to the polyphenolic constituents present in the pomace.

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