Functional Properties of Cowpea (Vigna unguiculata) Flour As Affected by Soaking, Boiling, and Fungal Fermentation

Document Type

Article

Publication Date

1-1-1997

Abstract

Functional properties of cowpea flour as affected by soaking, soaking/boiling (S/B), and fermentation of seeds with Rhizopus microsporus subsp. oligosporus before milling were investigated. Soaking and fungal fermentation had less influence on functionality of flour compared to S/B, which markedly decreased solubility and impaired emulsifying properties. Solubility of heat-denatured proteins was slightly improved by fermentation. High emulsion capacity was not associated with high emulsion viscosity or solubility. The combined effects of heat treatment and fungal fermentation on equilibrium moisture content were apparent at 75-97% equilibrium relative humidity. Cowpea flours were consistently more hydrophilic than lipophilic, regardless of processing treatment. The least gelation capacity of flours increased as a result of heat treatment.

Publication Source (Journal or Book title)

Journal of Agricultural and Food Chemistry

First Page

480

Last Page

486

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