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Effect of salt treatment on yield and quality of frozen cod loins
2019
Liorancas, V., Klaipeda State Univ. of Applied Sciences (Lithuania)
Study has been performed in fish processing plant ‘X’ with an aim of on purpose to investigating the influence of salt treatment on yield and quality of frozen cod loins. Samples were soaked in 0.8, 1.2, 10% NaCl concentrations in brine before being frozen. In this study, the cod loin’s weight loss during refrigeration, defrosting and cooking was calculated and sensory analysis was carried out. It was found that the soaking in brines affected higher weight of cod loins after freezing. In the control group it decreased by 1.14%, but the S0.8, S1.2 and S10 groups had the weight gain, respectively 3.41, 4.72 and +4.78%. Although after the defrosting and cooking the control group had the lowest weight losses, considering the losses of all operations, it was found that the largest weight loss was in the control group and in the S0.8 group, respectively 31.19% and 31.29%, while the lowest in the S1.2 and S10 groups – 30.49 and 30.06% (p is less than 0.05), respectively. Salt treatment did not affect the taste and odour, but improved the cod loin’s texture properties. Based on these results, salt treatment is considered as an effective way to improve the yield and quality of frozen cod loins.
Show more [+] Less [-]Isolation of cellulolytic bacterial strains from Rangifer tarandus rumen microflora
2019
Dubrovin, A., BIOTROF+, OOO, St. Petersburg (Russian Federation) | Dunyashev, T., BIOTROF+, OOO, St. Petersburg (Russian Federation) | Ilina, L., BIOTROF+, OOO, St. Petersburg (Russian Federation) | Filippova, V., BIOTROF+, OOO, St. Petersburg (Russian Federation) | Laishev, K., North-West Centre for Interdisciplinary Research on Food Security Problems, Saint Petersburg (Russian Federation)
The feature of the microorganisms of rumen microbiocenosis is the ability to form a number of digestive enzymes, including cellulases, which allows ruminants use the energy of feeds rich in fiber. Microorganisms that are promising as a source of cellulases, biodestructors of toxins having antagonistic properties against pathogens for creating probiotic feed additives, both for reindeer and for other livestock, were isolated from the reindeer rumen. The aim of the study was to create a collection of microorganisms that are promising for creating a biopreparation. As a result, collections of 63 associations of microorganisms decomposing cellulose and carboxymethylcellulose were created; their morphology and cultural properties were described. It was found that the amount of cellulose degradation was 44 – 62% in the 4 most active isolates (No 14, 15, 21 and 26). The obtained data allowed to make a conclusion about the ability of bacterial strains isolated from the rumen to synthesize cellulolytic enzymes carrying out cellulose biodegradation, which allows them to gain a competitive advantage in the rumen of the reindeer diets with an abundance of cellulose. Isolates No 14 and 15 showed high antagonistic activity to Fusarium sporotrichioides, and isolate No 15 and 16 showed high antagonistic activity to Fusarium oxysporum. Isolate No 15 showed a wider antifungal activity compared to other isolates. Among all isolated strains, this bacterial isolate is represented as having a large spectrum of activities, including both high cellulolytic and high antifingal activity.
Show more [+] Less [-]Above-ground and seed bank weed biodiversity comparison in conventional and organic farming systems in Poland
2019
Berbec, A.K., Institute of Soil Science and Plant Cultivation, State Research Inst., Pulawy (Poland) | Feledyn-Szewczyk , B., Institute of Soil Science and Plant Cultivation, State Research Inst., Pulawy
The assessment and conservation of agricultural biodiversity is one of the current goals of European Union policies, which are reflected in European Biodiversity Strategy. The biodiversity of soil seed bank and above-ground weed flora were investigated in spring cereals in organic and conventional farming system. The study was carried out between 2012 and 2014. Species of above-ground wild flora were counted on a surface of 1 square m in the field. Soil for seed bank evaluation was taken from the field and evaluated by seedling emergence method in a greenhouse. There were no significant differences in number of species between two communities. Biodiversity of weed community, described by Shannon’s diversity index and Simpson’s dominance index, was significantly better maintained in the soil seed bank than in above-ground flora in both farming systems. A strong, positive correlation between the number of species, Shannon’s diversity index, Simpson’s dominance index of soil seed bank and above-ground weed species was found in both farming systems, while abundance of seeds and above-ground weeds was significantly, positively correlated only in the conventional farming system. Qualitative composition of weed flora depended more on the type of community (soil seed bank or above-ground weed communities) than the farming system.
Show more [+] Less [-]Assessment of spring barley populations in comparison to homogenous varieties
2019
Locmele, I., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia);Latvia Univ. of Life Sciences and Technologies, Priekuli, Priekuli Parish, Priekuli Municipality (Latvia). Inst. of Agricultural Resources and Economics | Legzdina, L., Latvia Univ. of Life Sciences and Technologies, Priekuli, Priekuli Parish, Priekuli Municipality (Latvia). Inst. of Agricultural Resources and Economics | Piliksere, D., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Gaile, Z., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Kronberga, A., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia);Latvia Univ. of Life Sciences and Technologies, Priekuli, Priekuli Parish, Priekuli Municipality (Latvia). Inst. of Agricultural Resources and Economics
The necessity to increase genetic diversity in agriculture has been widely discussed during the last decades. Heterogeneous populations are one of the ways to increase genetic diversity in varieties of self-pollinating cereals. The aim of this research was to compare grain yield, its stability, foliar diseases severity and competitiveness against the weeds of spring barley (Hordeum vulgare) populations and homogenous varieties. Field trials consisting of three types of populations (simple, complex and composite cross populations – CCP) containing different levels of diversity and three check varieties were carried out during 2015−2018 under organic and conventional farming systems. No one of the populations had a significantly higher average yield than any of the check varieties. CCP1 showed a tendency to be more productive under organic growing conditions and can be characterized as widely adaptable to various growing conditions with a significantly higher yield as the average overall environments. One of the complex populations showed adaptability to favourable growing conditions and yield insignificantly higher than overall average. Other studied populations can be characterized with wide adaptability and various yield levels. For most of the populations under organic and conventional conditions, a significantly lower net blotch (caused by Pyrenophora teres) severity was observed in comparison with the most susceptible variety; infection with powdery mildew (caused by Blumeria graminis) lower than for check varieties was observed under organic growing conditions, whereas such trend was not observed under conventional conditions. All populations had a significantly lower crop ground cover and slightly lower competiveness against weeds than the variety with the best competitiveness
Show more [+] Less [-]Evaluation the baking value of passage flours
2019
Cacak-Pietrzak, G., Warsaw Univ. of Life Sciences (Poland) | Sułek, A., Institute of Soil Science and Plant Cultivation – State Research Inst., Pulawy (Poland) | Wyzinska, M., Institute of Soil Science and Plant Cultivation – State Research Inst., Pulawy (Poland)
The main direction of using wheat grains is grinding them into low-extraction flours. The flours collected from individual passages differ in terms of chemical composition and physical properties, which in turn differentiates their baking value. The aim of the study was to evaluate the baking value of passage flours obtained from the milling of spring and winter wheat grain. Wheat grain was milled in a 6-pass laboratory mill MLU-202 by Bühler. The baking value of the obtained passage flours was evaluated by an indirect method (protein content, gluten content and quality, falling number, farinograph analysis) and by a direct method (by baking and performing quality evaluation of the obtained bread). The research showed that the efficiency of flours from individual milling passages varied. The passages flours differed significantly in terms of chemical composition and baking value. The highest flour yields were obtained from the first and second grinding stages, while the smallest from the third grinding stage. Ash and total protein content, flour water absorption, and amylolytic enzymes activity increased together with the subsequent milling stage in both reduction-passage and grinding-passage. The gluten content increased with the next reduction stage, while it decreased with the subsequent grinding passage. The bread from the laboratory baking test was diversified in terms of sensory characteristics, loaf volume, and crumb porosity. The best quality bread was obtained from flour from the first two reduction passages. The lowest quality bread was obtained from flour from the final grinding passage.
Show more [+] Less [-]Botrytis genus fungi as causal agents of legume diseases: a review
2019
Brauna-Morzevska, E., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia);Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Research Inst. of Plant Protection | Bankina, B., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Kaneps, J., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia)
Grain legumes are important crops for the diversification of European farming system. In Latvia, the areas of faba beans (Vicia faba) and field peas (Pisum sativum) are increasing and legumes that have not been previously cultivated are sown. Globally, the important causal agent of legume diseases belongs to the genus Botrytis. Botrytis spp. cause significant losses in faba beans and infect a wide range of legume crops. Currently, the composition, pathogenicity and biological characteristics of Botrytis species in legumes in Latvia are not known. The aim of this study was to summarize the information about Botrytis spp. on legumes, using monographic method. The researches carried out all over the world show a high genetical diversity of Botrytis cinerea. Non-host specific B. cinerea has been found on 586 plant genera, including many legume crops. B. cinerea causes gray mold on leaves and pods of field peas, gray mold on pods of faba beans, and chocolate spot of faba bean leaves. B. fabae can infect plants from Fabaceae family. B. fabiopsis is known as a pathogen of faba beans. B. fabiopsis has been observed in Latvia, but no information is available on its presence in Europe. B. pseudocinerea has been found on beans, peas, and clover (Trifolium). Some other Botrytis spp. have been detected on legumes; however, their occurrence and importance are not clear. Summary of existing knowledge about Botrytis spp. on legumes is necessary to continue investigations about the diversity and economic importance of Botrytis spp. in legumes.
Show more [+] Less [-]Rock use technology for improvement microbiological indicators of leached chernozem
2019
Tskhovrebov. V., Stavropol State Agrarian Univ. (Russian Federation) | Kukushkina, V., Stavropol State Agrarian Univ. (Russian Federation) | Faizova, V., Stavropol State Agrarian Univ. (Russian Federation) | Kalugin, D., Stavropol State Agrarian Univ. (Russian Federation) | Nikiforova, A., Stavropol State Agrarian Univ. (Russian Federation)
Studies were conducted at the experimental station of the Stavropol State Agrarian University on leached chernozem, powerful, low-humus heavy loam on loess-like loam in 2017. The goal was to study the effect of the introduction of rocks rich in chemical composition (limestone-shell rock, apatite and phosphogypsum), both separately and jointly, on the microbial phase of the soil. The determination of the number of microorganisms was produced on dense nutrient medium by direct counting of colonies. It was found that the amount of ammonifiers under the control was 37 ml CFU gE−1 (colony-forming units), increasing 1.3–1.5 times with separate use and 2.5–3 times with the joint use of rocks. Similar changes were observed with respect to the number of nitrifiers and aerobic nitrogen fixers of the type Azotobacter. The number of cellulose-depleting microorganisms in the remineralization variants reached 220,00–230,00 CFU gE−1 compared to 115,00 CFU gE−1 under the control. With the introduction of separate rocks, there was a decrease in the occurrence of pathogens, while with a joint introduction they were not detected. The frequency of occurrence of toxin formers, such as Aspergillus and Penicillium, reached 100% at the control and decreased by 20–40% at the experimental variants. It was revealed that the introduction of shell limestone, apatite and phosphogypsum had an effect on the increase in the number of soil microbiota of various physiological groups. Among the fungal microflora, the number of pathogens and toxin formers decreases and the number of pathogen antagonists increases.
Show more [+] Less [-]Balanced scorecard for selected confectionery companies listed on the Warsaw Stock Exchange in Poland
2019
Jaworska, E., West Pomeranian Univ. of Technology in Szczecin (Poland) | Nadolna, B., West Pomeranian Univ. of Technology in Szczecin (Poland)
West Pomeranian University of Technology Szczecin, Poland Business managers report the need for modern methods to improve the implementation of organizational strategies. Translating the strategy into activities and monitoring its implementation poses a serious challenge for the management of modern enterprises. The article aims to present proposals for multidimensional performance measurement with the help of Balanced Scorecard (BSC) for selected Polish listed companies in the confectionery industry. The authors’ original solution within the framework of the BSC construction is extending the range of perspectives for assessing performance compared to the card proposed by Kaplan and Norton by the perspective of suppliers and CSR, and the appropriate selection of measures for this assessment. The article is based on literature studies and analysis of information included in business strategies, financial statements and reports on the operations of selected confectionery companies. Research on the use of multidimensional performance measurement using BSC, taking into account the additional perspectives of suppliers and CSR, help to better understand the relationship between economic, social, and environmental aspects of a company’s operations.
Show more [+] Less [-]Role of the European Fishery Fund support in the development of the Latvian costal areas
2019
Puzulis, A., Latvia Univ. of Life Sciences and Technologies, Priekuli, Priekuli Parish, Priekuli Municipality (Latvia). Inst. of Agricultural Resources and Economics | Veveris, A., Latvia Univ. of Life Sciences and Technologies, Priekuli, Priekuli Parish, Priekuli Municipality (Latvia). Inst. of Agricultural Resources and Economics
Purpose of the paper is to assess contribution of the European Fishery Fund (EFF) and European Maritime and Fisheries Fund (EMFF) in the development of coastal areas. The article reviews particulars of implementation of the Fishery Funds in various planning periods, in more detail analysing the implementation impact in the period of 2014−2020, based on analysis of the needs, goals and projects of the current period. Even though the European Fishery Fund (EFF) in Latvia is being implemented since 2007, there is a lack of scientific publications on its impact on the coastal development. EMFF for the period 2013−2020 has a dual role in the development of coastal areas – as a development tool of the fishery sector and as a development tool of communities in the fishery areas. It is implemented by using communityled local development (CLLD/LEADER) approach. In case of Latvia, a multi-fund approach – EFF/EMFF and European Agricultural Fund for Rural Development (EAFRD) is already being used for two planning periods. We conclude that the impact of EFF/EMFF on the development of coastal areas is more directed at development of infrastructure of the coastal communities but is less engaged in the fishery development matters - accordingly increasing other activities and preserving historic and cultural heritage for development of tourism and place of residence in the coastal area in interaction and in addition to EAFRD rural development measures of the coastal areas.
Show more [+] Less [-]Cross-border assignment – the study method supporting internationalization of SMEs [small- and medium- sized enterprises] and linkage between HEIs [higher education institutions] and industry
2019
Lescevica, M., Vidzeme Univ. of Applied Sciences, Valmiera (Latvia) | Titov, E., Estonian Entrepreneurship Univ. of Applied Sciences, Tallinn (Estonia)
The variety of study methods used at universities still is conservative and more pragmatic, but there is an increasing tendency to change study methodology to more and more student-centred and to focus on the students’ ability to become valuable workforce for SMEs. The necessity for development of study methods clearly demonstrates the research problem. At the same time, universities are facing pressure from governmental authorities to internationalize – student and teacher mobility, international partners and projects are highly recommended. The main process at universities is the study process. But also internationalization should support the study process and students in achieving practice-based learning outcomes. Facing these challenges, NOBANET network of universities has elaborated and piloted the study method Cross-Border Assignments (CBA) linking students’ future ability to successfully incorporate in the job market and the requirement for internationalization of studies. The aim of this article is to introduce and assess the CBA as a method to involve student work and students to engage in entrepreneurship problems. The authors have collected and analysed feedback of 10 CBAs implemented in 6 different universities. The feedback was received by using questionnaires with mainly closed questions. The results show that companies are satisfied with students’ work and they also appreciate teachers. The main conclusion about assessment of this method gives valuable contribution to scientific literature as a description of modern study method and good practice in linking HEIs and SMEs. Gratitude is expressed to the Nordic Council of Ministers for funding NOBANET project and project EKOSOC-LV, part 5.2.2. and INTERFRAME-LV.
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