Abstract

Grain of cereal cultures along with other types of nutrients contains much starch which digestion happens slowly and at the same time only certain forms and that in a small amount are productively used. According to a number of researches, the comprehensibility of nutritious potential of starch in the created natural form does not exceed 20–25% depending on a type of cultures. Therefore the problem of new technologies of processing of grain also consists in introduction of such ways of processing of initial raw materials which would allow to translate starch in convenient for assimilation by an organism a form. It is possible at destruction of granular structure of starch at the cellular level that promotes a rupture of natural communications between separate components and to his translation in more plain carbohydrates in the form of dextrins and sugars. Without special processing is trudnousvoyaemy as well cellulose which contains in a large number in grain and beans, especially in their top protective layers and covers. Therefore the developed ways of profound processing of initial grain raw materials have to promote destruction of a part of cellulose and lignin formations of cellulose in natural forms in simpler types of monosugars and amino acids. In world practice of production there is a set of methods and technologies of processing of grain raw materials for the purpose of increase in its nutritiousness. In recent years along with such receptions as extruding and expansion experts turn the increasing interest on methods of direct impact of electro magnetic fields on the earned extra raw materials. One of such processing methods is the method of electrohydraulic influence.

Highlights

  • Effects of extrusion cooking on the dietary fibre content and Water Solubility Index of wheat bran extrudates // International Journal of Food Science & Technology. 2015

  • One of such processing methods is the method of electrohydraulic influence

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Summary

Introduction

Одним из таких приемов является процесс экспандирования зерновых и других компонентов, который, как и экструдирование, расширяет возможности для совершенствования технологии пищевого производства. Процесс экструдирования при этом является весьма энергоемким. Поставим задачу для произвольной формы оболочки, состоящей из трех частей различных по форме конической, цилиндрической и сферической (рисунок 1), найти толщину стенки при заданных габаритных размерах и внутреннем давлении [2,3,4,5]. Расчет ведем с учетом размерностей, поэтому в начале программы для прикладного пакета программы Mathcad приведем размерности необходимых параметров, в частности: радиуса цилиндрической части r0, давления р, длины цилиндрической и конической частей оболочки Lкон и Lцил, приближенное значение толщины оболочки δ (для вывода промежуточных результатов расчетов), допускаемое напряжение σдоп (рисунок 2).

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