Production of invert sugar from cellulose for subsequent fermentation with feeder yeast

Abstract

Microbial protein for animals can be produced by using various technologies that differ in efficiency, environmental friendliness and life on the market, including due to limited resources. The work presents the study dedicated to the possibility of producing inverse sugar from sawdust by the cavitation method using an ultrasonic cell. In the course of the research samples of hydrolysates with a mass fraction of inverse sugars of more than 30% have been produced. The work also shows the effectiveness of using the resulting sugars for developing feed yeast biomass enriched with bioelements, probiotic, prebiotic and other biologically active substances. Dry standard nutrient medium for yeast, whey, dry whey, permeate, dry permeate have been studied as the basis of the nutrient medium for the feed protein production. Laboratory data suggests that further testing should be carried out at the production scale, but the problem point for implementation of such technology has been a lack of a productive, environmentally friendly and efficient method for producing inverse sugar from sawdust. The scientific novelty of the work is presented by environmentally friendly technology of the cavitation process using an improved Ch-245 flow cell (Novotekh-EKO LLC (Vologda, Russia)), while the productive capacity of ultrasonic equipment in this format can be adjusted for the specific performance of the whey processing line /permeate by parallel use of several flow cells. Thus, the proposed technology helps in simultaneous solving environmental problems associated with underutilization of secondary dairy raw materials as well as in gaining economic benefits from using wood chip waste. At the same time, the flexibility of biotechnologies makes it possible to develop a functional feed product for farm animals with a specific set of biologically active substances, bioelements, in particular.