Daily mycoprotein consumption for one week does not affect insulin sensitivity or glycaemic control but modulates the plasma lipidome in healthy adults: a randomised controlled trial
Coelho, MO; Monteyne, AJ; Dirks, ML; et al.Finnigan, TJ; Stephens, FB; Wall, BT
Date: 14 July 2020
Journal
British Journal Nutrition
Publisher
Cambridge University Press
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Abstract
Mycoprotein consumption has been shown to improve acute postprandial glycaemic control and decrease circulating cholesterol concentrations. We investigated the impact of incorporating mycoprotein into the diet on insulin sensitivity (IS), glycaemic control and plasma lipoprotein composition. Twenty healthy adults participated in a ...
Mycoprotein consumption has been shown to improve acute postprandial glycaemic control and decrease circulating cholesterol concentrations. We investigated the impact of incorporating mycoprotein into the diet on insulin sensitivity (IS), glycaemic control and plasma lipoprotein composition. Twenty healthy adults participated in a randomised, parallel-group trial in which they consumed a 7 d fully-controlled diet where lunch and dinner contained either meat/fish (CON) or mycoprotein (MYC) as the primary source of dietary protein. Oral glucose tolerance tests were performed pre- and post- intervention, and 24h continuous blood glucose monitoring was applied throughout. Fasting plasma samples were obtained pre- and post- intervention and were analysed using quantitative, targeted NMR-based metabonomics. There were no changes within or between groups in blood glucose or serum insulin responses, nor in IS (Cederholm; 51±3 to 51±3 and 54±3 to 53±3 mg.L2/mmol.mU.min in CON and MYC, respectively; P<0.05) or 24 h glycaemic profiles. No differences between groups were found for 171 of the 224 metabonomic targets. Forty five lipid concentrations of different lipoprotein fractions (VLDL, LDL, IDL and HDL) remained unchanged in CON but showed a coordinated decrease (7-27 %; all P<0.05) in MYC. Total plasma cholesterol, free-C, LDL-C, HDL2-C, DHA and omega-3 fatty acids decreased to a larger degree in MYC (14-19 %) compared with CON (3-11 %; P<0.05). Substituting meat/fish for mycoprotein twice-daily for one week did not modulate whole-body IS or glycaemic control but resulted in changes to plasma lipid composition; the latter primarily consisting of a coordinated reduction in circulating cholesterol containing lipoproteins.
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