Modulation of gut microbiota by spent coffee grounds attenuates diet-induced metabolic syndrome in rats

Bhandarkar, Nikhil S. and Mouatt, Peter and Goncalves, Priscila and Thomas, Torsten and Brown, Lindsay and Panchal, Sunil K. (2020) Modulation of gut microbiota by spent coffee grounds attenuates diet-induced metabolic syndrome in rats. The FASEB Journal, 34 (3). pp. 4783-4797. ISSN 0892-6638


Abstract

Coffee brewing produces spent coffee grounds as waste; few studies have investigated the health benefits of these grounds. This study investigated responses to spent coffee grounds in a diet-induced rat model of metabolic syndrome. Male Wistar rats aged 8-9 weeks were fed either corn starch-rich diet or high-carbohydrate, high-fat diet for 16 weeks, which were supplemented with 5% spent coffee grounds during the last 8 weeks. Rats fed non-supplemented diets were used as controls. High-carbohydrate, high-fat diet-fed rats developed metabolic syndrome including abdominal obesity, impaired glucose tolerance, dyslipidemia, and cardiovascular and liver damage. Body weight, abdominal fat, total body fat mass, systolic blood pressure, and concentrations of plasma triglycerides and non-esterified fatty acids were reduced by spent coffee grounds along with improved glucose tolerance and structure and function of heart and liver. Spent coffee grounds increased the diversity of the gut microbiota and decreased the ratio of Firmicutes to Bacteroidetes. Changes in gut microbiota correlated with the reduction in obesity and improvement in glucose tolerance and systolic blood pressure. These findings indicate that intervention with spent coffee grounds may be useful for managing obesity and metabolic syndrome by altering the gut microbiota, thus increasing the value of this food waste.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Health and Wellbeing (1 Jan 2015 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Health and Wellbeing (1 Jan 2015 -)
Date Deposited: 24 Jul 2020 06:28
Last Modified: 27 Jul 2020 01:42
Uncontrolled Keywords: gut microbiota; metabolic syndrome; obesity; rats; spent coffee grounds
Fields of Research (2008): 11 Medical and Health Sciences > 1111 Nutrition and Dietetics > 111103 Nutritional Physiology
11 Medical and Health Sciences > 1115 Pharmacology and Pharmaceutical Sciences > 111501 Basic Pharmacology
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970111 Expanding Knowledge in the Medical and Health Sciences
Identification Number or DOI: https://doi.org/10.1096/fj.201902416RR
URI: http://eprints.usq.edu.au/id/eprint/38939

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