Extraction of Anthocyanins from two Types of Cowpea (White and Red) Vigna Unguiculata L. using GCMS Technique

Abstract

In this study, the anthocyanin dye was extracted from two cultivars of cowpea (white cowpea and red cowpea) Vigna unguiculata L. using acidified methanol (1% HCl in methanol) and acidified ethanol (1% HCl in ethanol). The extract obtained from the extraction was injected directly into the GCMS device, and GCMS is an advanced technology to determine the composition, molecular weight, scientific name of the anthocyanins and the identified compounds together. In this study, several compounds were identified in the anthocyanin extract, and the anthocyanin type was identified, as it was found that white and red cowpea contain Cyanidin 3-glucoside, while Peonidin 3-glucoside was found in red cowpea only.