Starch extraction process coupled to protein recovery from leguminous tuberous roots (Pachyrhizus ahipa)

VIÑA, SONIA Z.; DINI, CECILIA; DÍAZ, ANDREA; GARCÍA, MARÍA A.

CARBOHYDRATE POLYMERS

ELSEVIER SCI LTD

Lugar: Amsterdam; Año: 2016 vol. 152 p. 231 - 240

0144-8617

The objective of this work was to fit together the starch extraction from Pachyrhizus ahipa roots andthe recovery of the proteins present in these storage organs, making an improved use of this novel rawmaterial. The replacement of water by buffer PO4−3/NaCl as solvent in the first extraction steps improvedprotein extraction without lowering the starch yield. The starches obtained from the traditional and theproposed methods exhibited some differences in appearance and technological and thermal properties,which were endorsed to the adjustment in the methodology of extraction rather than to the use ofbuffer as solvent. Thus, P. ahipa starch obtaining procedure could be coupled to protein extraction witha minimum change in the methodology. This innovation did not significantly shift the characteristics ofthe starch obtained and allowed to obtain a protein yield of 135.7 mg BSA equivalent protein/100 g offresh roots.