Application of by-products of bioetanol production in feeding, environmental and feeding safety concerns of utilization

Introduction Bioethanol can be used as a substitute for mineral oil based fuel or it can also be embroiled in petrol. As basic materials, sugar-, celluloseand starch can be taken into consideration. Production of the alcohol can take place in three ways: i) sugar extraction and fermentation, ii) starch hydrolysis and fermentation, iii) cellulose hydrolysis and fermentation. In the course of Bioethanol production technology a significant amount of high protein, biomass generated by-product beyond the quality of generated ethanol rises, deposition and recycling of which is of importance both from environmental and economic point of view. Alongside with energy-use application, these by-products can play a role not only in ransoming imported feed, but – contrary to forage of animal origin – it can also guarantee exemption of the native stock of ruminants from BSE. In the course of processing the assessed sphere of problems, it became definitely clear, that there is no elaborated and uniformly adopted technology for bioethanol production by-product processing worldwide either. Numerous problems connected with by-products arise, setting an obstacle to direct use.