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Open AccessArticle

Protein-Rich Flours from Quinoa and Buckwheat Favourably Affect the Growth Parameters, Intestinal Microbial Activity and Plasma Lipid Profile of Rats

1
Division of Food Science, Institute of Animal Reproduction and Food Research, Tuwima 10, 10-748 Olsztyn, Poland
2
Fraunhofer Institute for Process Engineering and Packaging, Giggenhauser Str. 35, D-85354 Freising, Germany
3
Department of Food Science, University of Copenhagen, 1958 Frederiksberg C., Denmark
4
Molecular Immunonutrition Group, Madrid Institute for Advanced Studies in Food (IMDEA-Food), Ctra. de Canto Blanco n° 8, 28049 Madrid, Spain
*
Author to whom correspondence should be addressed.
Nutrients 2020, 12(9), 2781; https://doi.org/10.3390/nu12092781
Received: 27 July 2020 / Revised: 10 August 2020 / Accepted: 2 September 2020 / Published: 11 September 2020
(This article belongs to the Special Issue The Link between Diet, Gut Microbes and Health)
In recent years, dietary products with quinoa and buckwheat have attracted attention mostly due to the high nutritive value of their protein fraction. However, their dietary effect on intestinal microbiota activity and related systemic responses are still poorly understood. Therefore, a 2 week study of twenty-eight growing male Wistar rats was conducted to investigate the effects of quinoa (QU) and buckwheat (BK) protein-rich flours on the growth parameters, intestinal microbial activity, plasma lipid profile, and inflammatory markers. The biological value of protein and body weight gain were considerably increased in the QU and BK groups compared with those in the soy protein isolate group. Moreover, both flours increased the microbial activity of α-glucosidase, β-glucosidase, and α-galactosidase and the concentration of short-chain fatty acids in the caecum. The studied flours favourably reduced the plasma total cholesterol and LDL cholesterol. In rats fed a diet with QU, elevated levels of plasma interleukin 6 and alanine transaminase were observed. The effect of QU on inflammatory markers may be related to the increased expression of aryl hydrocarbon receptor in the liver and to the decreased level of plasma albumin. In conclusion, quinoa and buckwheat protein-rich flours are valuable sources of proteins that favourably affect growth parameters, gut metabolism, and blood lipid profile in rats; however, only the buckwheat flour has no effect on inflammatory processes. View Full-Text
Keywords: quinoa; buckwheat; butyric acid; aryl hydrocarbon receptor; lipid profile; Wistar rats quinoa; buckwheat; butyric acid; aryl hydrocarbon receptor; lipid profile; Wistar rats
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MDPI and ACS Style

Fotschki, B.; Juśkiewicz, J.; Jurgoński, A.; Amarowicz, R.; Opyd, P.; Bez, J.; Muranyi, I.; Lykke Petersen, I.; Laparra Llopis, M. Protein-Rich Flours from Quinoa and Buckwheat Favourably Affect the Growth Parameters, Intestinal Microbial Activity and Plasma Lipid Profile of Rats. Nutrients 2020, 12, 2781. https://doi.org/10.3390/nu12092781

AMA Style

Fotschki B, Juśkiewicz J, Jurgoński A, Amarowicz R, Opyd P, Bez J, Muranyi I, Lykke Petersen I, Laparra Llopis M. Protein-Rich Flours from Quinoa and Buckwheat Favourably Affect the Growth Parameters, Intestinal Microbial Activity and Plasma Lipid Profile of Rats. Nutrients. 2020; 12(9):2781. https://doi.org/10.3390/nu12092781

Chicago/Turabian Style

Fotschki, Bartosz; Juśkiewicz, Jerzy; Jurgoński, Adam; Amarowicz, Ryszard; Opyd, Paulina; Bez, Jürgen; Muranyi, Isabel; Lykke Petersen, Iben; Laparra Llopis, Moisés. 2020. "Protein-Rich Flours from Quinoa and Buckwheat Favourably Affect the Growth Parameters, Intestinal Microbial Activity and Plasma Lipid Profile of Rats" Nutrients 12, no. 9: 2781. https://doi.org/10.3390/nu12092781

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