Roasting intensity of naturally low-caffeine Laurina coffee modulates glucose metabolism and redox balance in humans

Abstract Objective Coffee consumption is negatively associated with risk of type 2 diabetes and cardiovascular mortality. Coffee roasting can greatly modify the quality-quantitative characteristics of bioactive compounds. We compared the effects of two different roasting intensities of the same natu...

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Published in:Nutrition (Burbank, Los Angeles County, Calif.) Los Angeles County, Calif.), 2016-09, Vol.32 (9), p.928-936
Main Authors: Di Girolamo, Filippo Giorgio, Ph.D., Pharma.D, Mazzucco, Sara, Ph.D., Pharma.D, Situlin, Roberta, M.D, Mohorko, Nina, Ph.D, Jenko-Pražnikar, Zala, Ph.D, Petelin, Ana, Ph.D, Tence, Marcello, M.D, Pišot, Rado, Ph.D, Navarini, Luciano, Chem.D, Biolo, Gianni, Ph.D., M.D
Format: Article
Language:English
Subjects:
Adult
Antioxidants
Blood Glucose - metabolism
Caffeine
Coffea - chemistry
Coffea - metabolism
Coffee
Coffee - chemistry
Coffee - metabolism
Cross-Over Studies
Dietitians
Double-Blind Method
Exercise
Food Handling - methods
Gastroenterology and Hepatology
Glucose
Hot Temperature
Humans
Insulin
Insulin resistance
Lipids
Male
Metabolism
NMR
Nuclear magnetic resonance
Omega-3 fatty acids
Oxidation-Reduction
Oxidative stress
Physical fitness
Roasting intensity
Studies
Type-2 diabetes mellitus
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Summary:Abstract Objective Coffee consumption is negatively associated with risk of type 2 diabetes and cardiovascular mortality. Coffee roasting can greatly modify the quality-quantitative characteristics of bioactive compounds. We compared the effects of two different roasting intensities of the same naturally low-caffeine Arabica coffee variety ( Laurina ) on glucose and lipid metabolism as well as oxidative stress. Methods We performed a double-blind, crossover intervention study. Fourteen healthy male volunteers consumed four cups daily of light roasted coffee (LRC) and dark roasted coffee (DRC), each for 1 wk (intervention period 1 and 2 respectively). One wk washout, with total abstinence from coffee and other possible caffeine sources, preceded each intervention. Data were collected at the end of washout and intervention periods. Results Changes between washout and intervention periods in glucose concentrations at 2 h post–oral glucose tolerance test, were significantly lower after DRC than LRC intake (−0.6 ± 0.3 and 0.4 ± 0.3 mmol/L, P  
ISSN:0899-9007
1873-1244
DOI:10.1016/j.nut.2016.02.001