Open-access Quantitive determination of castor oil

A methodology was developed to quantify the castor oil seed content, through the determination of refractive index of ethanolic solutions with different oil concentrations and temperatures. The results showed a nearly linear relationship between the refractive index and oil concentration for each temperature. This correlation permits to quantify castor oil content of ethanolic solutions by calculation from the quickly and accurate measurement of refractive index.

castor oil; refractive index


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