scholarly journals Analysis of technological schemes for the efficient production of added-value products from Colombian oleochemical feedstocks

2014 ◽  
Vol 49 (3) ◽  
pp. 474-489 ◽  
Author(s):  
Luis E. Rincón ◽  
Valentina Hernández ◽  
Carlos A. Cardona
Foods ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 137
Author(s):  
M. Fraga-Corral ◽  
P. Otero ◽  
J. Echave ◽  
P. Garcia-Oliveira ◽  
M. Carpena ◽  
...  

During recent decades, consumers have been continuously moving towards the substitution of synthetic ingredients of the food industry by natural products, obtained from vegetal, animal or microbial sources. Additionally, a circular economy has been proposed as the most efficient production system since it allows for reducing and reutilizing different wastes. Current agriculture is responsible for producing high quantities of organic agricultural waste (e.g., discarded fruits and vegetables, peels, leaves, seeds or forestall residues), that usually ends up underutilized and accumulated, causing environmental problems. Interestingly, these agri-food by-products are potential sources of valuable bioactive molecules such as tannins. Tannins are phenolic compounds, secondary metabolites of plants widespread in terrestrial and aquatic natural environments. As they can be found in plenty of plants and herbs, they have been traditionally used for medicinal and other purposes, such as the leather industry. This fact is explained by the fact that they exert plenty of different biological activities and, thus, they entail a great potential to be used in the food, nutraceutical and pharmaceutical industry. Consequently, this review article is directed towards the description of the biological activities exerted by tannins as they could be further extracted from by-products of the agri-food industry to produce high-added-value products.


2021 ◽  
Vol 5 (4) ◽  
pp. 236-244
Author(s):  
K. Bekbayev ◽  
M. Akim ◽  
Zh. Nabiyeva

Currently, dark fermentation is the most practically applicable for the implementation of biotechnological  roduction of hydrogen. However, this process has certain limiting factors, since a significant part of the substrates are converted into various metabolic products, but not into H2 . Therefore, it is necessary to develop optimal conditions for energy recovery in the form of gaseous molecular hydrogen. Various carbohydrate-containing raw materials for hydrogen production often require pretreatment before they can be used by microorganisms. Dilute acid pretreatment represents a promising way to increase biohydrogen production. However, during acid hydrolysis of carbohydrate-containing wastes, in addition to the released soluble sugars, inhibitors of enzymatic processing, such as furfural and 5-HMF, acetic and propionic acids, etc., can accumulate. In this regard, it is necessary to select the optimal conditions for the efficient production of biohydrogen. This study investigated the production of biohydrogen during the microbial fermentation of sugars in a dilute solution of a molasses-based acid hydrolyzate using Escherichia coli and a multiple mutant. The results of the experiments showed that molasses is a valuable product as a source of carbon and energy for microorganisms in the production of biohydrogen, as well as for the production of biomass for the further production of various products with high added value.


Author(s):  
A. E. Melnikov

At present, the issues related to overcoming technical backwardness, economic growth rate, increase in labor productivity, modernization of the industrial complex, formation of digital economy are coming to the fore in Russia at the present time. Under the circumstances, a crucial role is played by the industrial sector as a driver of scientific progress and social development. However, the current situation is not conducive to the development of industrial sectors and new technological modes. Moreover, it can lead to a de-industrialization. Technological upgrading and the transition to sustainable development in current situation depend on the speed of manufacturing production and the transition to a more efficient production models with a greater added-value and knowledge content. Modernization of conventional industries and the development of technological sectors will be a crucial factor for economic growth. However, the volatile situation of industrial sectors, the limits of resource-based sectors is capacity, prevalence of factors relating to the fluctuations in the global economy the posed challenges on the way.


2015 ◽  
Vol 809-810 ◽  
pp. 1275-1280
Author(s):  
Pavlina Toteva ◽  
Dimka Vasileva

The basis of effective and efficient production are the measurements. Manufacturing processes should meet the accuracy requirements to produce fit products. Processes capabilities are determined (estimated) and managed by measurements and not at least the suitability of the products are also found by measurements. The measurement technique is considered as a factor associated with costs without taking part in the creation of added value. As a logical consequence is offered to reduce the measurements in order to reduce costs, according to the possibilities, but this leads to increasing of defects in production. This expensive and sometimes fatal consequences of this mentality are not reported. Processes and products are evaluated incorrectly. The number of errors and the expenses increase.


Agro Ekonomi ◽  
2017 ◽  
Vol 24 (1) ◽  
pp. 24
Author(s):  
Tri Sukma ◽  
Slamet Hartono ◽  
Djuwari Djuwari

One of the plantation sub-sector is now growing quite significantly is tobacco, where most farmers grow tobacco because this plant is considered to provide more added value when compared to other subsectors. Temanggung is known for quality tobacco than the tobacco of any area. To overcome the problem of capital and other issues, the majority of tobacco farmers in Temanggung working with the company’s domestic tobacco industry. Through this business partnership is expected to be fast so that the mutualistic symbiosis flaws and limitatation faced by tobacco farmers can be resolved. This study aims to : (1) knowing the production and the factors that influence the producton of tobacco and independent partnership (2) tp find out the income and factors that affect farm income on tobacco and independent partnership (3) to find out the allocative efficiency of input use on tobacco farming and independent partnership (4) knowing the risks of production and the risk of tobacco farm income.This study uses secondary data and primary by taking 60 farmers sample of 30 farmers and 30 farmers partnership patterns independently. To determine tha factors affecting farm production and income patterns of tobacco use and independent partnership Ordinary Least Square regression (OLS), to know the iffernce between the tobacco farm income and independent partnership used different test, to determine the allocative efficiency an production risk and income risk using coeffisien variation.Based on the result of the analysis indicate that the factors that influence the production is labor, the amount of organic fertilizer, the amount of inorganic fertilizrr, pesticides and dummy partnership, while the factors that affect revenue is the price of pesticide, land area, and dummy partnership. From the test resultas show the efficiency, not allocative efficient. Production risk and the risk of partnership income of farmers is higher than the patterm of independent farmers.


Author(s):  
D. A. Dorogi ◽  
F. Apáti

We assessed the cost/income conditions of forced tomato production and return conditions of the growing technologies by investment-profitability analysis. Horticultural sectors generate significant added value and employ a large number of workers per unit area; however, these sectors cover only 4% of agricultural areas. Regarding the use of capital and labour, forced vegetables are the most intensive horticultures with several development potential and reserves to gain better quality and a more efficient farming. One of the most prominent forced cultures is table tomato produced under different types of forcing equipment in Hungary: traditional, low-height plastic tunnel; large-atmospheric, block-based plastic tunnels and various greenhouses. The prime goal of my thesis is to specify the economic efficiency of each type and to choose the most efficient one by the complex economic assessment of plastic tunnels, block-based plastic tunnels and greenhouses with the most advanced technologies. Results of the economic analysis suggest that the most efficient production method is the modern, Dutch greenhouse technology; however, this statement is not backed by every indicator: each type has its own advantages and disadvantages. Regarding the future, the installation of such types or even (in the technical sense) more modern growing technology may be considered as a prospect for capital intensive and larger businesses.


2018 ◽  
Vol 1 (1) ◽  
pp. 42-50
Author(s):  
Nadia Firnalista ◽  
Nofialdi Nofialdi ◽  
Zednita Azriani

Rural agroindustry can absorb a relatively high labor rate, but the added value of the products is very low, resulting in low labor productivity. This research aims at describing the process of sugarcane into brown sugar and analyzing the added value of brown sugar agroindustry as well as its distribution in Bukik Batabuah Village, Canduang Agam Sub-district. The data were collected from six brown sugar processing home industries. This research found that there were three kinds of brown sugar namely saka kariang, saka gatah kuniang and saka gatah merah, which were only different in the time of cooking, storage process of tengguli, and heating of tengguli on saka gatah processing. These made the three types of brown sugar have different texture, taste, color and price. From their added value, saka kariang and saka gatah kuniang were classified as medium products, while saka gatah merah was classified as a low product. In addition, this research reveals that the smallest added value distribution was received by paid labors. Based on the findings, the following suggestions are recommended: (1) the brown sugar business should focus on developing a business of saka kariang processing; and (2) the added value of brown sugar could be enhanced by the use of effective and efficient production machinery, so that the added value distributed to the brown sugar agroindustry could be improved


2018 ◽  
Vol 3 (1) ◽  
pp. 055-060 ◽  
Author(s):  
Priscilla Barbosa Sales de Albuquerque ◽  
Katarynna Santos de Araújo ◽  
Kelvin Augusto Azevedo da Silva ◽  
Laureen Michelle Houllou ◽  
Gabriel Olivo Locatelli ◽  
...  

Cupriavidus necator was used for polyhydroxyalkanoate (PHA) production with the aim to compare the substrate consumption between pure glycerol (PG) and the glycerol obtained from biodiesel industry (GB). Shake flask experiments were performed with 20 g/L for both the carbon sources, incubated in a shaking incubator at 35 ºC for up to 72 h. At the end, the residual carbon source was analyzed by HPLC, the biomass recuperation for biopolymer extraction and biopolymer characterized by FTIR. The results demonstrated that 35.75 % of PG was consumed during biomass production, while 45.08 % was the value consumed for GB, which can indicate the higher PHA accumulation in GB-sample, as observed by microscopy analyses. Fourier Transform Infrared (FTIR) spectroscopy was performed to confirm the PHA nature of PG and GB samples, and confirmed the establishment of more hydrogen bonds in the PG one, suggesting the surplus of glycerol in the obtained-biopolymer. Since it is interesting the utilization of GB for obtaining added-value products along with biodiesel, this study reported the efficient production of PHA by C. necator using GB as carbon source and its promising use in the bioplastic industry as an alternative product for petrochemical plastics, foreseeing the improvement of a sustainable industry based on biofuels and biopolymers.


Author(s):  
R. Byvshev ◽  
A. Listopadov

The article analyzes the causal relationships of the dynamics of inflation processes in Ukraine using the tools of anti-inflationary policy. The main causes of inflationary processes in Ukraine are determined. The main directions for the improvement of anti-inflationary policy in Ukraine are proposed, the main ones being: the development of comprehensive state programs for the development of economic sectors that contribute to the creation of competitive, high-tech and high-tech production, especially in the agro-industrial complex and IT industry; improvement of the monetary policy of the National Bank of Ukraine, which should consist of crediting efficient production in priority sectors of the economy, using a productive issue tool that through a credit channel facilitates the growth of production, import substitution, the saturation of domestic markets with domestic goods, growth of employment and wages; stabilization of the foreign exchange market through currency, banking, and monetary regulation reforms, which are aimed at balancing the development of the foreign exchange market, supporting the development of export-oriented industries with high added value, and creating positive incentives for bringing exporters to the country. Keywords inflation, anti-inflation policy, foreign exchange market, industrial products, consumers, producers, price index, national economy.


Author(s):  
B. Lencova ◽  
G. Wisselink

Recent progress in computer technology enables the calculation of lens fields and focal properties on commonly available computers such as IBM ATs. If we add to this the use of graphics, we greatly increase the applicability of design programs for electron lenses. Most programs for field computation are based on the finite element method (FEM). They are written in Fortran 77, so that they are easily transferred from PCs to larger machines.The design process has recently been made significantly more user friendly by adding input programs written in Turbo Pascal, which allows a flexible implementation of computer graphics. The input programs have not only menu driven input and modification of numerical data, but also graphics editing of the data. The input programs create files which are subsequently read by the Fortran programs. From the main menu of our magnetic lens design program, further options are chosen by using function keys or numbers. Some options (lens initialization and setting, fine mesh, current densities, etc.) open other menus where computation parameters can be set or numerical data can be entered with the help of a simple line editor. The "draw lens" option enables graphical editing of the mesh - see fig. I. The geometry of the electron lens is specified in terms of coordinates and indices of a coarse quadrilateral mesh. In this mesh, the fine mesh with smoothly changing step size is calculated by an automeshing procedure. The options shown in fig. 1 allow modification of the number of coarse mesh lines, change of coordinates of mesh points or lines, and specification of lens parts. Interactive and graphical modification of the fine mesh can be called from the fine mesh menu. Finally, the lens computation can be called. Our FEM program allows up to 8000 mesh points on an AT computer. Another menu allows the display of computed results stored in output files and graphical display of axial flux density, flux density in magnetic parts, and the flux lines in magnetic lenses - see fig. 2. A series of several lens excitations with user specified or default magnetization curves can be calculated and displayed in one session.


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