PREPARATION AND EVALUATION OF YOGHURT PRODUCED USING SWEET LUPINE, CHICKPEA FLOUR AND THEIR DERIVATIVES

Document Type : Research articles.

Authors

1 Food Technol. Res. Inst., Agric. Res. Center, Giza, Egypt

2 Agricultural Chemistry Dept., Minia University, Egypt

Abstract

Sweet lupine (L) and chickpea (C) flour, protein concentrate
(PC), protein isolate (PI) and fibrous residue (FR) have been
examined for their properties and used in making yoghurt. The
chemical analysis showed higher protein content for sweet lupine
(88.32 and 64.52% for PI and PC, respectively) than chickpea (83.02
and 57.49% for PI and PC, respectively). Similar order has been
noticed for protein solubility using different solvents. The crude fiber
content was higher in chickpea (7.32 and 0.32% for PC and PI,
respectively) than lupine (4.20 and 0.18 for PC and PI, respectively).
The sensory evaluation revealed an improvement in the color,
texture and appearance of yoghurt made using 0.25% CPC.
Moreover, CPI improved the color, odor, texture and appearance at
0.25 and 0.50%. The different concentrations of LFR and CFR
improved the color, texture and appearance. The microbiological
analysis showed prospective results with using different
concentrations of LPC, CPC, LPI and CPI. Where, the total bacterial
count was decreased except for 0.25% LPC, The yeast and mould
content was decreased as well except for 0.25% CPC. In all the tested
samples, the coliform group was not detected.


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