Abstract
Betaine and choline, important constituents in the food matrix of staple foods function as methyl donors in one‐carbon metabolism. They are also lipotropes, compounds that prevent excess hepatic fat deposits and may influence insulin signaling. The aim of this study was to profile betaine and choline in cultivars of a set of staple crops. A set of samples corresponding to cultivars of potato (Solanum tuberosum) n=4, native potato (Solanum phureja) n=6, common dry beans (Phaseolus vulgaris) n=2, and lentils (Lens culinaris) n=5, were profiled for these methyl donors. The samples were cooked, freeze‐dried, subjected to acetonitrile, and extracted metabolites were measured via liquid chromatography‐mass spectrometry; results are presented on dry‐basis. Among the bean cultivars B2 had higher levels of betaine and B1 presented with higher levels of free choline. Lentil cultivars L4 and L5 were higher for betaine and L7 was higher for free choline. The native potato NP9 was significantly higher for both betaine and free choline. The common potato CP17 showed levels of betaine 17 fold higher than the rest of the cultivars, and CP16 was higher for free choline. These results suggest the accumulation of betaine and free choline in the food matrix should be carefully assessed since the presence of these methyl donors in the diets could improve health outcomes.
Published Version
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