scholarly journals Physico-chemical Characteristics and Utilization of Raw Materials for Mushroom Substrates

2010 ◽  
Vol 38 (2) ◽  
pp. 136-141 ◽  
Author(s):  
Jong-Chun Cheong ◽  
Chang-Sung Jhune ◽  
Chan-Jung Lee ◽  
Jin-A Oh
2012 ◽  
Vol 535-537 ◽  
pp. 1041-1045 ◽  
Author(s):  
Seitkhan Azat ◽  
Valodia V. Pavlenko ◽  
Almagul R. Kerimkulova ◽  
Zulkhair A. Mansurov

This article presents the results of the synthesis of carbon nanomaterials: Nanoscale materials obtained by carbonization of waste agricultural products (apricot kernel, walnut, rice husk). The results of physico-chemical characteristics of the obtained nanomaterials.


Author(s):  
Konstantin V. Lipin ◽  
Sergey V. Fedoseev

The goal of our work is to develop a synthesis of tetracyanoethylene suitable for scaling and to design a technological scheme of the process based on it. To achieve this goal, a tetracyanoethylene synthesis method was originally developed, which consists of the following stages: obtaining sodium cyanodithioformate based on carbon disulfide and sodium cyanide using N, N-dimethylformamide as a solvent; obtaining tetracyano-1,4-dithiine by treating sodium cyanodithioformate with chlorine; obtaining tetracyanoethylene from tetracyano-1,4-dithiine by sequential interaction with sodium cyanide and chlorine. The developed method was tested in the laboratory, where it showed its suitability. Therefore, further on the base of this method, a technological scheme of the process was designed. A description of the scheme and the necessary sequence of operations are compiled. The interaction takes place in the reactors R-1, R-2, R-3. Pumps N-1–4 provided the pumping the reaction mass. Also, in the technological scheme there is an F-1 Nutsche filter for separation of the suspension. To isolate and purify the obtained tetracyanoethylene, an I-1 vacuum evaporator and a SA-1 sublimation apparatus are used. The necessary equipment was selected for the technological scheme: Р-1 reactor made of Teflon with a volume of 200 l with a stirrer and a jacket; two reactors Р-2 and Р-3 made of glass with a volume of 200 l with a stirrer and a jacket; Ф-1 Nutsche filter made of thick-walled polypropylene pipes; sublimation apparatus CA-1 continuous. The selection of the main and auxiliary equipment was carried out on the base of the chemical and physico-chemical characteristics of the reagents, technological conditions and the characteristics of the process. This method of obtaining compares favorably with the use of simple and cheap raw materials common in the chemical industry and the use of standard processing equipment.


The article presents the results of a comprehensive study of bentonite clays of the North Jamansay deposit of Karakalpakstan for the production of ceramic heat-insulating materials. The possibility of using this bentonite clay as a result of studying their chemical and mineralogical, fractional compositions and physico-chemical characteristics for ceramic heat-insulating materials for various purposes has been established.


2019 ◽  
Vol 1 ◽  
pp. 59-64 ◽  
Author(s):  
Alina Tkachenko ◽  
Ivan Syrokhman ◽  
Tetyana Lozova ◽  
Nataliya Ofilenko ◽  
Elena Goryachova ◽  
...  

The article discusses the recipes of new biscuits based on organic raw materials, as well as the results of the study of their quality and safety indicators. The aim of this research is studying the consumer properties of biscuits, developed on the basis of organic raw materials, which will expand the range of organic confectionery products. The main difference between the developed biscuit recipes is that instead of wheat flour buckwheat flour, spelled flour and hemp flour were used, and coconut and maple sugar were used as sweeteners. To determine the organoleptic characteristics, a 25-point scale was developed, which includes indicators: taste, smell, appearance, crust state, crumb color. On the basis of the carried out organoleptic assessment, it has been established that the developed biscuits have a pleasant taste and good aroma and are highly appreciated by the tasting commission. Physico-chemical characteristics and safety performance of the developed products were within the normal range. Thanks to the use of non-traditional raw materials, the energy value of biscuits was reduced. On the basis of the obtained data, the expediency of expanding the range of organic confectionery products with new types of biscuits is substantiated.


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