Development of two-stage alkaline refining of oils obtained from low-grade cotton seeds using caustic soda, sodium silicate and microwave radiation

The article substantiates the improved technology of two-stage alkaline refining of oils obtained from low-grade cotton seeds using caustic soda and sodium silicate. On the basis of the technological scheme, the norms of technological modes have been developed. In the pilot production conditions of Karshiyog-extraction JSC, we tested the developed technology of two-stage alkaline refining of oils obtained from low-grade cotton seeds and ultrahigh-frequency radiation. The developed technology makes it possible to significantly reduce the color, acid, and peroxide numbers and the mass fraction of unsaponifiable substances in the resulting oil. This helps to increase the yield of bleached oil, reduce the consumption of bleaching clay and improve the quality and food safety of the resulting product. As a result, the yield of refined cottonseed oil, obtained from low-grade cotton seeds, increased by 1.1 times (90%) (compared to the traditional one (85.1)).

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