scholarly journals Roller Dryer for Drying Milk in Low-Tonnage Conditions

Author(s):  
Marina Beleckaya ◽  
Alexander Vladimirov ◽  
Oksana Kozlova ◽  
Irina Milenteva

Introduction. Milk has a high nutritional value and is a vital component of human diet. Today, the dairy market is one of the largest and actively developing food markets. However, this industry is characterized by such problems as seasonality and poor transportability of raw materials. These problems particularly affect small farms. Deep processing of dairy raw materials to obtain dry powders is the most effective way to solve these problems. The research objective was to develop a low-tonnage dryer for producing milk powder on small farms and to select the optimal drying temperature. Study objects and methods. The research featured whole milk of the ‘Svoya Ferma’ brand, mass fraction of fat = 3.4–4.5%. The research was performed on the premises of Kemerovo State University (Kemerovo, Russia). The milk was dried on a pilot sample of the roller dryer developed by the research team. The dryer consisted of a vessel, heating drums, and a microcontroller, which was connected to the temperature sensor and the control circuit of the power part, which had a powerful rectifier and pulse regulator. Results and discussion. When the drying temperature exceeded 98°C, the characteristics of the milk powder deteriorated, and the milk failed to meet the State Standard. The optimal drying temperature was 92–95°C, since at this temperature all the characteristics, except for the solubility index, corresponded to the State Standard. The sensory and physical properties of the milk powder were improved by reducing the drying time and the distance between the knife and the drum. Conclusion. Further experiments have to be performed to determine the optimal rotation speed of the drums and the distance between the knife and the drum.

2010 ◽  
Vol 168-170 ◽  
pp. 1509-1512
Author(s):  
Zu Min Qiu ◽  
Yan Yan Zeng ◽  
Zhong Wei Liu

This paper related to the recycling of banknote printing wastewater, using which as raw materials, a low cost interior latex coatings has been developed. This coatings is formulated based on styrene-acrylic emulsion and silicon sol as main film former. It has been shown that the performance of of this product meets the state standard of GB/T 9756-2009.


2020 ◽  
Vol 50 (1) ◽  
pp. 79-86
Author(s):  
Elena Verboloz ◽  
Marina Ivanova ◽  
Vera Demchenko ◽  
Sergey Fartukov ◽  
Nikita Evona

Introduction. Rose hips are rich in macro- and micronutrients. Unfortunately, heat treatment destroys most nutrients. Ultrasonic technologies make it possible to reduce the drying time and lower the temperature regime. The research objective was to adjust ultrasound technology to rose hip production in order to reduce the loss of vitamins and improve the quality indicators of the dried product. Study objects and methods. The research featured rose hips of the Rosa canina species collected in the south of Kazakhstan. This subspecies of wild rose is poor in vitamin C. Nevertheless, this shrub is extremely common in Russia and other countries of the Commonwealth of Independent States. The raw material was dried according to standard methods. One group of samples was treated with ultrasound, while the other served as control. Both groups underwent a sensory evaluation and were tested for moisture and vitamin C. Results and discussion. The rose hips were dried in a combination steam oven with a built-in ultrasonic wave generator. The research revealed the following optimal parameters of the ultrasound drying process: frequency of ultrasonic vibrations – 22 kHz, processing time – 2.5 h, temperature in the combination steam oven – +56°C, initial moisture content – 30%. The resulting product met the requirements of State Standard. The loss of moisture was 57%. According to State Standard 1994-93, the initial moisture content should be 15% or less. Time decreased from 360 min to 160 min, and the initial moisture was 13%. The experiment confirmed the initial hypothesis that ultrasonic treatment improves the drying process by improving quality indicators and preserving vitamin C in raw materials using. Conclusion. Ultrasound treatment during moisture removal from rose hips provides a resource-saving technology that fulfills an economically and socially important function.


2020 ◽  
Vol 194 ◽  
pp. 02014
Author(s):  
Xiu Fangtao ◽  
Zhu Hongguang ◽  
Xu Yupeng

For the biogas project which does not have the ability to return to the field nearby, the outlet of biogas residue is one of the important bottlenecks restricting the development of biogas engineering. Deep dehydration and drying is a reliable basis for commercial utilization of biogas residue, especially combined with waste heat utilization of cogeneration of biogas. Therefore, three kinds of biogas residue raw materials were dried at low temperature by hot drying method in this paper. The drying temperature, the thickness of biogas residue and the backmixing amount of dry biogas residue were selected as three influencing factors. The drying time, drying rate and residual water ratio were taken as dependent variables. The drying characteristic curve of biogas residue was obtained, and the influence of each factor on the drying process of biogas residue was analyzed and compared. The results showed that the drying time of three kinds of biogas residue decreased with the increase of drying temperature. At the same temperature, the drying time decreases with the decrease of thickness. The dry biogas residue backmixing can’t optimize the drying characteristics and even increase the drying energy consumption.


2019 ◽  
Vol 3 (2) ◽  
pp. 60-77
Author(s):  
Rosdiani Azis ◽  
Ingka Rizkyani Akolo

Flavoring is a product that is absolutely needed in people's lives today. The fact is that there are now many foods that contain unhealthy flavoring, especially MSG, Nike and anchovy have high levels of glutamate acid, so Nike and anchovy can be used as raw materials for natural flavoring. The purpose of this study is to determine the factors that provide optimal results on the quality of instant flavorings produced and determine the effect of drying time, drying temperature and type of fish used on water content, ash content of organoleptic properties of instant flavoring. This study uses the Taguchi method design with 3 factors and mixed levels (2 and 4 levels) to optimize product and process design so that an optimal response is produced. The factors used are Drying Time (A), Drying Temperature (B), and Fish Type (C). The drying time used is 7 hours (A1); 8 hours (A2); 9 hours (A3) and 10 hours (A4). Drying temperatures used are: 500 (B1) and 600 (B2), while the types of fish used are wet anchovies (C1) and nike fish (C2). While the response variables used to determine the quality of instant flavorings are water content, ash content and organoleptic properties. Organoleptic quality response and shelf life will be determined by the optimization objectives in the Minitab program 16. The results of the research produced the best flavoring seen from water content is flavoring from Nike fish with a drying time of 10 hours and drying temperature of 800C, whereas if viewed from ash content, then the best flavoring is the flavoring of nike fish with a drying temperature of 800C and a long drying time of 8 hours  


2018 ◽  
Vol 193 ◽  
pp. 211-222
Author(s):  
M. D. Mukatova ◽  
N. A. Kirichko ◽  
M. S. Moiseenko ◽  
S. A. Skolkov

Complete utilization of all wastes of fish processing becomes actual in modern conditions of depletion of the fish raw materials because of the commercial catch decreasing in the Volga-Caspian Basin. Abilities of fish oil extraction from fins of catfish are considered. Several technologies of the oil extraction from this waste are tested: thermal, carbamide-thermal, combined carbamide-thermal, and hydromechanical. Organoleptic parameters of the raw materials and produced fatty products are determined in accordance with the state standard № 7631-2008. Water, protein, fat, and mineral substances content in the raw material and physical and chemical properties of the produced fish oil are measured by standard methods given in the state standard № 7636-85, using the thin-layer chromatography. The fat content in the raw material is evaluated as 33.8 %. The fish oil output from the fat-containing raw materials is determined. The carbamide-thermal method is defined as the optimal one for oil extraction from fins of catfish. At the first stage, the raw material is heated to 70 о C during 60 minutes, then it is mixed with 1.5 % of carbamide in 30 % solution and the liquid and dense fractions of the mixture are separated under 3000 rpm in 30 minutes; at the second stage, the dense fraction is heated to 70°C, mixed with 20 % of water, and the mixture is heated to 75 о C during 60 min, then the liquid and dense fractions of the mixture are separated again; finally, the liquid fractions from both stages of treatment are subjected to sedimentation during 10 minutes under ambient temperature and the semi-finished fatty products are separated by 15 min. centrifuging at 4000 rpm. Phospholipids, monoglycerides, sterols, hydrocarbons, sterol esters, and the main fractions of triglycerides and carotenoids are presented in the fish oil produced with this technology, so it could be used in veterinary. This method for fish oil extraction from the fins of catfish is applied to the enterprises Parshikov and Fabrika Vesna and showed its efficiency in industrial conditions. 


2019 ◽  
Vol 13 (01) ◽  
pp. 52
Author(s):  
Dian Purbasari

As one of the products from soybean, soybean milk is widely known and appreciated by the public because of its benefits for health. Problems are often encountered in the processing of liquid soybean milk, such as short shelf life of it and easy to loss of quality. One alternative treatment that can extend the shelf life is to turn it into an instant soybean milk powder by drying method. Making instant soybean milk powder in this study used a foam-mat drying method. The purpose of this research was to study the application of foam-mat drying method on the characteristic (quality) of instan soybean milk powder produced. The results showed that the best treatment according to the drying time parameters was at 10% dextrin and 1% Tween 80. Physical characteristics of instant soybean milk powder had the highest yield values (16.10%) at a drying temperature of 60°C, the value of lightness (L) about 84.2; value of redness (a) about 1.3; yellowish value (b) about 24,and water absorption (DSA) of 1.68 mL/g. Chemical analysis resulted that water content of 3.05% at the drying temperature of 70°C, while the highest protein content at the drying temperature of 60°C amounted to 17.34% and the highest fat content about 11.36% at drying temperature of 50°C. Keywords: foam-mat drying, instant, shelf life, soybean milk


Author(s):  
I. A. Ilina ◽  
I. A. Machneva ◽  
E. S. Bakun

  The article is devoted to the study of the chemical composition, physical and thermal-pfysical characteristics of damp apple pomaces and the identifying patterns of influence of drying temperature the functional composition and gel-forming ability of pectin. The research is aimed at obtaining initial data for the subsequent calculation of the main technological, hydro-mechanical, thermal, structural and economic characteristics of devices for drying the plant raw materials, ensuring the environmental safety and high quality of pectin-containing raw materials, the reducing heat and energy costs. As a result of the study of the thermal characteristics of apple pomaces, the critical points (temperature conductivity – 16.5 x 10-8 m2/s, thermal conductivity – 0.28 W/m K, heat capacity – 1627 j/(kg K)) at a humidity of 56 % are determined, which characterizing the transition from the extraction of weakly bound moisture to the extraction of moisture with strong bonds (colloidal, adsorption). It was found that the pomaces obtained from apples of late ripening have a higher content of solids (21-23 %), soluble pectin and protopectin (2.5-4.5 %). Dried pomaces obtained from apple varieties of late ripening contain up to 25 % pectin, which allow us to recommend them as a source of raw materials for the production of pectin. The optimum modes of preliminary washing of raw materials are offered, allowing to the remove the ballast substances as much as possible. It is established that when the drying temperature increases, the destructive processes are catalyzed: the strength of the pectin jelly and the uronide component and the degree of pectin esterification are reduced. The optimum drying temperature of damp apple pomaces is 80 0C, at which the quality of pectin extracted from the dried raw materials is maintained as much as possible. It is shown that the most effective for the pectin production is a fraction with a particle size of 3-5 mm, which allow us to extract up to 71 % of pectin from raw materials.


2020 ◽  
pp. 63-72
Author(s):  
Yu. Olefir ◽  
E. Sakanyan ◽  
I. Osipova ◽  
V. Dobrynin ◽  
M. Smirnova ◽  
...  

The entry of a wide range of biotechnological products into the pharmaceutical market calls for rein-forcement of the quality, efficacy and safety standards at the state level. The following general monographs have been elaborated for the first time to be included into the State Pharmacopoeia of the Russian Federation, XIV edition: "Viral safety" and "Reduction of the risk of transmitting animal spongiform encephalopathy via medicinal products". These general monographs were elaborated taking into account the requirements of foreign pharmacopoeias and the WHO recommendations. The present paper summarises the key aspects of the monographs.


2019 ◽  
Vol 39 (2) ◽  
pp. 196-205
Author(s):  
N. V. Firov

A comparative analysis of the prices of raw materials, fuel, electricity in Russia and Western countries, the dynamics of their growth and impact on the national economy. It is shown that in the interests of the country's economic development and improving the welfare of the population, it is necessary to use its natural resources more effectively, to pursue a more stringent and at the same time balanced policy to curb the growth of prices, taking into account the interests of the state and business.


Author(s):  
Nina M. Edrenkina ◽  
◽  
Aleksandr E. Lisitsyn ◽  
Aleksey I. Suchkov ◽  
◽  
...  

Clustering of the regions of the Siberian Federal District (SFD) was carried out according to the state of reproduction of labor resources in rural areas. The modern problems of reproduction of labor resources in the regions of the SFD are identified, taking into account the peculiarities of each of them. As a result, the distribution of the regions of the Siberian Federal District by the state of labor resources of the rural territories was obtained by the following clusters: national, raw materials and leaders. Recommendations for the development of the reproduction of labor resources in rural areas are offered.


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