Technological parameters determining physical-chemical properties and required quality of green pellets at the roasting machine No. 3 of PJSC “Mikhailovsky GOK”

2017 ◽  
pp. 4-8
Author(s):  
P. V. Puzakov ◽  
◽  
A. V. Kozub ◽  
A. A. Ugarov ◽  
N. T. Efendiev ◽  
...  
2020 ◽  
Vol 1 (2) ◽  
pp. 7-16
Author(s):  
Winda Amilia ◽  
Andrew Setiawan Rusdianto ◽  
Arma Dwi Novemi

The amount of mango production in Indonesia is quite high, but the quality of postharvest mangoes is still quite low. The quality of the fruit will decline due to contamination; one of the contaminants is fungi. The way to reduce the damage of postharvest products is by coating applications. The purpose of this study was to study the physical, chemical and antifungal activities of harumanis mangoes’s quality which had been given coating during storage that could cause postharvest losses of harumanis mangoes. There are 3 treatments, each of them are respectively the provision of corn based coating  6% tobacco extract, 8% tobacco extract and 10% tobacco extract. The physical and chemical properties of the antifungal coating of tobacco extract made from corn coating for post-harvest damage on harumanis mangoes were obtained by weight loss, texture, colour, respiration rate, vitamin C and total dissolved solid. Preventing coating can prevent damage after harvest and protect the harumanis mango; therefore the quality of the mangoes can be maintained. The best results from the priority with the largest diameter inhibition zone were given corn starch 10% tobacco extract. Then the higher the concentration of extract used, the greater the diameter of the inhibition zone obtained. Based on all the tests performed (physical, chemical, and antifungal) the best treatment from the treatment was obtained that consisted of mangoes with antifungal layers of corn starch 10% tobacco extract. Because the P3 obtained the best results in maintaining physical, chemical content and fungi for 15 days.


2020 ◽  
Vol 168 ◽  
pp. 00012
Author(s):  
Ivan Minin

The determination of the optimal operational mode of drum mills can be assessed by different criteria. The most important of them can be formulated as follows: “To be specified and established the values of the mill operational parameters regarding to which it is possible to be provided the user’s expected performance at the required quality of the final product and the same to be achieved at minimal energy consumption”. For the fulfillment of this condition, there has to be determined the laws of productivity variation, the final product quality and the energy consumption in function of the adequately chosen representative control parameters of the mill. There are obtained mathematical models, describing the most important technological parameters of the machine and are made conclusions about the factors influencing on them.


Author(s):  
Claudiu Dan SÄ‚LÄ‚GEAN ◽  
Dorin Å¢IBULCÄ‚ ◽  
Mirela JIMBOREAN ◽  
Daniel CHERECHE Ș

Abstract. The purpose of the performed researche was to establish the quality of some meat products in casings belonging to the semi-smoked group obtained in a meat processing factory. In this respect, organoleptic and physical-chemical analysis have been performed on ten assortments belonging to the specified group of the meat products in casings. The obtained results highlight that, from organoleptic point of view the finished products are in compliance with the standard provisions excepting some assortments in which case were found some physical faults such as: wrinkled casings (in case of the Italian and pork salamis), the presence of conjunctive tissue on section (in case of the Victoria salami) or pork skin improperly minced (the Salajeni sausages), exuding fat at the ends of the bar-salamis (in case of the Crakauer salami), air holes under the casing (in case of the Trandafir sausages) or on section (in case of the Vara salami). These physical faults are caused by the non-observance of some technological parameters. The incidence of these faults does not exceed 12.8% of the total number of analyzed samples. From physical-chemical point of view the obtained values for the finished products are in accordance with the in force quality standards, excepting 10% from the total number of analyzed samples (small exceedings of the maximum admitted limit of the moisture content in case of the Vara, Italian and pork salamis and the salt content for the Populari sausages). There have been analysed the causes of these faults and the necessary measures to prevent occurrence of these faults and insuring the quality of the finished products 


2018 ◽  
Vol 5 ◽  
pp. 62-70
Author(s):  
Aziz Sardarov ◽  
Olga Mayak ◽  
Andrey Shevchenko ◽  
Svitlana Prasol ◽  
Gennadiy Shershnev

The work studies the drying process of vegetable bagasse, namely of carrot and beet. There is studied the moisture content kinetics of vegetable bagasse and determined the dependence of the process duration on main technological parameters in the work of a vibration vacuum dryer, namely, an amplitude and frequency. There were studied quality parameters of obtained concentrated products, namely the colorimetric estimation of dried bagasse of carrot and beet. Based on obtained results of the study, it was established, that the use of vibration in the process of drying bagasse favors conservation and formation of colorimetric characteristics of a dried product. Determined color characteristics gave a possibility to establish, that at thermal processing it is very important to decrease the drying process duration and temperature. Research data proved prospects of producing concentrated products, namely, dried bagasse of carrot and beet by the offered method. It allows to regulate quality parameters of a ready product: color, brightness, consistence, viscosity and physical-chemical properties. Obtained concentrated products are characterized with high organoleptic indices, food value. This product may be used in the wide spectrum of food industry, such as, for example: juice supplement, stuff for confectionary mass, filling for confectionary products, as biological supplement for healthy nutrition.


2021 ◽  
Vol 10 (1) ◽  
pp. 29
Author(s):  
Mafaza Kanzul Fikri ◽  
Trapsilo Prihandono ◽  
Lailatul Nuraini

Abstract: An important stage that will determine the quality of ready-to-consume coffee is roasting. This method has been developed and used to obtain the best and specific quality of coffee brewing. In addition to the method used, the type of coffee greatly influences the quality characteristics of the brewed coffee produced. Coffee beans will not have a high commercial value before being subjected to a roasting process for the formation of the best aroma and taste. Roasting is a combination of time and temperature that changes the structure and chemical properties in coffee beans through the pyrolysis process. Even high-quality coffee beans cannot have maximum aroma and flavor if the roasting process is not done properly. This research uses a roasting machine type Hot Air Roasting or with other names Air Roasting is a different roasted coffee method. Coffee roasting process is not on the surface of the roaster but in the air, this coffee roasting method was introduced by Michael Sivetz, a chemical engineer and consultant of the world coffee industry. Based on the results of this study that the decrease in density discussed in the previous paragraph shows that the longer the roasting, the weight of coffee will decrease because the water content in coffee beans has begun to decrease. This shows that the longer the coffee beans are roasted, the better the results of heating. This research process uses a hot air type roasting machine. Hot water is one type of roasting machine that is good and efficient, because the heating carried out by the machine uses electrical energy. The final results obtained in this study the temperature continues to rise but the density decreases. This shows the inverse relationship between temperature and density of coffee and the best roasting results and can be used for brewing robusta coffee at 200 ° C in 15-20 minutes.    Keywords: Hot Air Roasting, Robusta Coffee


Author(s):  
Muhammad Rendana ◽  
Wan Mohd Razi Idris ◽  
Sahibin Abdul Rahim ◽  
Zulfahmi Ali Rahman ◽  
Tukimat Lihan

<p>The soft clay soil has been categorized as infertile soil. The occurrence of soft clay soil in paddy field areas can decline soil quality and rice production. Therefore, to find the best technique for amending this soil, this study aimed to analyze the physical, chemical, and microstructure properties of the soft clay soil in the paddy field area. The soft clay soil samples were collected from two paddy blocks in Kedah, Malaysia. The physical and chemical properties of the soil were determined using the standard method in the laboratory. The microstructure properties were analyzed using Zeiss SUPRA 55VP microscopes. The results found that the soft clay soil was composed of silt – clay (&gt; 90%) with the texture of silty clay. The soft clay soil was characterized by low values of organic matter (2.63-3.42%), pH (3.32-3.69), cation exchange capacity (6.89-8.72 cmol<sub>c</sub> kg<sup>-1</sup>), available P (0.14-0.41 mg kg<sup>-1</sup>), aggregate stability (16.53-17.78%), and hydraulic conductivity (0.17 cm hr<sup>-1</sup>). In contrast, it indicated high values of soil water content (42.24-43.21%), and exchangeable Na<sup>+</sup> ions (2.48-2.50 cmol<sub>c</sub> kg<sup>-1</sup>). In addition, the analysis of heavy metals content revealed that their concentrations were below the critical level in the soil. The soft clay soil was largely governed by kaolinite minerals, and it had less compact structures with many large voids among soil aggregates. In conclusion, the quality of soft clay soil in the study area was poor with low physical and chemical parameters. The quality of the soil could be improved by the addition of soil amendments such as zeolite, cement, and other additive materials to absorb the excess water in the soil and increase the soil strength.</p>


2020 ◽  
Author(s):  
dadvan Hakeem Abdulrahman

Drinking water is considered one of the basic human needs that cannot be dispensed with for any reason and the water must have quality standards in terms of taste and color in addition to the physical, chemical and biological specifications. The bottled water industry has flourished in recent decades, and the demand for it has increased in most parts of the world and for various reasons, perhaps the most prominent of which is the quality of bottled water and the regularity of that quality in different seasons, while the water changes its quality due to the quality of the source ,in addition to the possibility of contamination during transportation or when it is poorly stored, which It leads to a change in some physical and chemical properties of water. On this basis, specific samples were selected for all companies that manufacture bottled water at Duhok Governorate area, and then all samples were examined, both chemical and physical, to obtain laboratory results for these samples.


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