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Closed Access item Inositol phosphate profiling of fermented cowpeas by H-1 NMR spectroscopy

Authors:Valverde, Serafín
Frías, Juana
Doblado, Rosa
Jimeno, M. Luisa
Vidal-Valverde, Concepción
Keywords:Fermentation, cowpeas, inositol phosphates, 1H NMR spectroscopy
Issue Date:2005
Publisher:American Chemical Society
Citation:Journal of Agriciltural and Food Chemistry 53 : 4714-4721 (2005)
Abstract:The inositol phosphate content of naturally fermented cowpeas (Vigna sinensis var. Carilla) was studied using ion-pair HPLC and 1H NMR spectroscopy. The fermented flour was extracted with 0.5 M HCl, and the extract was purified and fractionated by ion-exchange chromatography. 1H NMR allowed for the identification of two monophosphates [Ins(1 or 3)P1 and Ins(4 or 6)P1], one inositol diphosphate [Ins(1,4)P2], three inositol triphosphates [Ins(1,2,6)P3, Ins(1,5,6)P3, and Ins(1,4,5)P3], one inositol tetraphosphate [Ins(1,3,4,5)P4], and one inositol pentaphosphate [Ins(1,2,3,5,6)P5]. Some of these isomers [Ins(1,4,5)P3 and Ins(1,3,4,5)P4] are considered to play important biological roles in intracellular signaling.
Publisher version (URL):http://dx.doi.org/10.1021/jf0481047
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