Optimization of sunflower husk utilization methods using various ultrasonic treatment methods

Abstract

Abstract The article considers the assessment of the impact of ultrasonic treatment under the influence of such parameters as pH of the environment, temperature, time and power on the chemical composition of sunflower husks as well as for waste disposal in oil extraction production with subsequent use in animal feeding in order to achieve a closed-loop economy model. Ultrasonic treatment with water at 20 °C, 15 minutes, 27 kHz increases the mass fraction of fat from 1.43% to 2.63% relative to other samples, with an increase in temperature to 70 °C, the mass fraction of crude protein increases by 5.31% and the mass fraction decreases crude fiber by 5.8% relative to control. The elemental profile of crushed sunflower husks changed with different models of ultrasonic treatment, in all samples there was an increase in the content of the mass fraction of calcium, the greatest difference was achieved in sample No. 2 times higher than control. The mass fraction of iron in almost all samples increased, the maximum value was in sample No. 5 (ultrasound treatment at 20 °C, 15 minutes, 27 kHz + lactic acid to pH – 4) by 24.9 mg/kg higher relative to the control. The impact of ultrasound on the samples, gives a decrease in the content of palmitoleic acid to 0.3% and an increase in stearic acid by 0.8% relative to the sample not subjected to ultrasonic treatment.