scholarly journals Adsorption Properties of Combined Vegetable Powders

2021 ◽  
Vol 7 (1) ◽  
pp. 38-47
Author(s):  
Zhanna Petrova ◽  
◽  
Kateryna Samoilenko

Equilibrium moisture of combined vegetable powders obtained from vegetable raw materials is one of the main technological properties and it is important. Because the final moisture content and energy costs for the dehydration process depend on this indicator. To determine the equilibrium humidity of the samples of combined powders, depending on the relative humidity, the tensometric (static) method of Van Bamelen was used. As a result of researches, kinetic curves of adsorption of water vapor of mono- and combined vegetable powders, which were compared among themselves, were received. Comparison of adsorption isotherms, despite the same nature of these isotherms, show that these materials are capillary-porous colloidal bodies and have the same forms of moisture binding (adsorption, capillary and osmotic) and at the same time differ significantly from each other by equilibrium humidity. When storing composite powders in order to preserve their technological properties, it is recommended to maintain the following conditions in the room: humidity not more than 60 % at the temperature of 20 - 25 ºC and to pack hermetically.

2020 ◽  
Vol 1 (27(54)) ◽  
pp. 8-11
Author(s):  
A.D. Dzhamakeeva

The work is devoted to the study of the possibility of using functional vegetable ingredients in the technology of meatsemi-finished products andthe study of their influence on the functional and technological properties of chopped mea, and nutritional value of finished products. The modeling and optimization of the meat-vegetable semi-finished products recipes was carried out using the Smart Lab program. The quality indicators of finished products, confirming the feasibility of introducing vegetable raw materials into the recipes of semi-finished product, were investigated. The proposed technologies of the meat-vegetablesemi-finished products hasbeen tested at the meat-processing enterprise «Barkad»


Minerals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 851
Author(s):  
Tatiana Aleksandrova ◽  
Nadezhda Nikolaeva ◽  
Anastasia Afanasova ◽  
Artyem Romashev ◽  
Valentin Kuznetsov

Deterioration of mineralogical and physical characteristics of mineral raw materials results in the formation of the primary task for the comminution processes—reduction in the size of ore to obtain a material with a certain granulometric composition, which in turn is achieved by overgrinding of raw materials and, consequently, an increase in energy costs. The work aimed to justify the possibility of selective disintegration of mineral assemblages of polymetallic ores of various genesis at the stage of crushing based on in-depth investigation and revealing of interrelation and mutual influence of mineralogical-geochemical features, textural-structural and technological properties. Structural and textural features have been studied by the methods of computed X-ray microtomography. Experimental and theoretical investigations of mineralogical and technological parameters of raw materials, as well as research on crushing using different types of crushers, made it possible to substantiate the possibility of selective disintegration for polymetallic ores.


2020 ◽  
Vol 84 (1) ◽  
pp. 16-21
Author(s):  
Zhanna Petrova ◽  
Kateryna Slobodianiuk

Outdated technologies in drying processes can lead to iПеrrational use of energy, as a consequence, high energy consumption and increased energy consumption. Therefore, the issues of energy saving and energy efficiency are the most important tasks to be solved. Nowadays, energy saving and energy efficiency are also part of the environmental problem. Ukraine, which has a unique geographical position for Europe, is fully supplied with natural resources, - one of the countries where there is inefficient use of energy resources. One of the energy-consuming areas of vegetable processing is drying. In the modern world, the issue of energy efficiency of drying methods is one of the most relevant areas of research. Convective drying of vegetable raw materials requires a rational use of regime parameters of the process corresponding to the biochemical properties of the processed object. The primary objectives of this area of processing of vegetable raw materials are to reduce energy costs and ensure high quality characteristics of the final product. This article presents the developed heat-technology for obtaining phytoestrogenic powder from soybeans and spinach. Which includes 3 stages: preliminary preparation of raw materials for drying; drying of thermolabile vegetable raw materials; dispersion and packaging of the obtained phytoestrogenic powder. As a result of previously conducted comprehensive research, it was found that the use of heat technology reduces energy costs at the stage of preparation of raw materials through the improvement of existing hydrothermal treatment of soybeans, as well as energy savings of 21% through the use of developed step modes. Studies of the qualitative characteristics of the obtained phytoestrogenic powder confirm the high quality of the final product.


Author(s):  
Viktor V. Deryushev ◽  
Evgeniy E. Kosenko ◽  
Vera V. Kosenko ◽  
Mikhail A. Krivchuk ◽  
Ilya V. Deryushev ◽  
...  

Introduction. The article deals with the issues related to provision of air humidity parameters required for non-hazardous operation of various technical facilities. Problem Statement. The paper considers analytical methods for energy efficiency assessment of adsorption and condensation methods of air dehumidification, which provide safe microclimatic working conditions, and the influence of the operating modes of dehumidifying plants on the parameters of the microclimate. Theoretical Part. As indicators of the energy efficiency of each of the methods, it is proposed to use the energy costs that are minimally necessary for the implementation of ideal physical dehumidification processes and per unit mass of water units emitted from air. This ensures safe and comfortable microclimatic working conditions with minimal energy costs. The ratio of the specific energy costs of the condensation and adsorption methods shows their comparative efficiency. An electronic Id-diagram was used to determine the air parameters in the implemented dehumidification processes (cooling, condensation and adsorption of water vapor). Conclusion. Analytical dependences are obtained for the analyzed energy efficiency indicators that provide safe and comfortable microclimatic working conditions with minimal energy costs. Numerical estimates were carried out according to the most probable modes of dehumidification processes and air parameters. The parametric restrictions on the implementation of the adsorption dehumidification method are justified, in which it becomes energetically more profitable. The conditions under which it is possible to implement a combined dehumidification method to ensure safe microclimatic working conditions are determined.


Author(s):  
R.B. Mukhtarhanova ◽  
◽  
A.I Matibayeva ◽  
B.S Dzhetpisbaeva ◽  
S.A Abzhanova ◽  
...  

The data demonstrate the relevance of research on the production of lactic acid by adding lentils as cereals and leguminous raw materials to goat milk. The physicochemical and technological properties of goat milk used as the main raw material for the production of lactic acid, and ways of adding lentils as milkand-vegetable raw materials to dairy products were studied.


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