REFRACTOMETRIC METHOD FOR EVALUATION OF SOYBEAN PROTEIN SOLUBILITY
Keywords:
soybean meal, KOH protein solubility, refractive indexAbstract
During the manufacture of soybean meal a quick control is essential, so that simple
and rapid methods, to enable an immediate decision to be made, are of value A
simple and rapid method for estimating soybean protein solubility on the basis of
changes in the refractive index of dilute potassium hydroxide solution extracts was
tested and we found to be highly correlated with the usual protein solubility test in
KOH (r = 0.9382). Determination of biophysical parameters instead of chemical
indices has two great advantages: the methods are nonpolluting since they don’t use
chemical substances, and the methods are very rapid.
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