Development of technology for hydrothermal processing of oat grain

Abstract

The paper presents technical solutions aimed at increasing efficiency of technological process for obtaining food concentrates using oat flour made from grain that has undergone hydrothermal treatment. The technology for oat flour production with a high content of biologically active substances provides for the stage-by-stage (complex) processing of oat grain, including cleaning, hydrothermal treatment of grain, further hulling and grinding. The paper describes the author’s resource-saving technology and new developed equipment, which provide for hydrothermal treatment of grain crops with removal of stagnant zones in the working volume of the chamber due to continuous mixing of grain using a screw winding, which is repeating an oval shape in the body cross-section, and equal distribution of the steam mixture due to the steam distributing jacket of the body and steam manifolds mounted on the auger shaft. The authors carried out comparison of the developed resource-saving technology with the existing technology of grain preparation for peeling, which has found wide application at grain processing enterprises. Based on the studies carried out, the main solutions have been identified, the introduction of which increases the efficiency of using hydrothermal treatment to 100%, increases the yield of whole grain in the peeling process by 90-96%, and reduces the amount of waste in the form of crushed grain by 4-6%. The developed technology and equipment are intended to be introduced into production schemes for processing grain seeds for mini-shops on the territory of the Krasnoyarsk Territory. It was found that the use of the developed resource-saving technology and new equipment reduces the cost of hydrothermal treatment of oat seeds, in comparison with existing technologies, up to 8-10%.