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EXPLORATION OF THE POSSIBILITIES FOR THE PRODUCTION OF TABLEWARE FROM THE BRAN OF VARIOUS CEREALS Полный текст
2024
Olt, Jüri | Soots, Kaarel | Olt, Andres | Rooni, Vahur
Biodegradable and compostable tableware is significantly more environment and nature friendly than disposable tableware and drinkware made of plastic. Tableware made of wheat bran, but also corn and rice bran is already commercially available. It is reasonable to use the by-products of the milling of also other cereals, like rye bran, barley bran and oat bran, for the production of tableware. The aim of this research was to explore the possibilities for the production of tableware and drinkware from the by-products of the milling of wheat and also other cereals like rye and oat bran. In order to achieve the aim, compacts were moulded from rye bran and oat bran and mixtures of bran (wheat bran and rye bran) using various work modes. The moulding of the compacts included different temperatures of the mould, moulding durations and compressive forces. The mechanical properties like density and flexural strength of the compacts were determined and the compostability of the compacts was studied. The test bodies were placed inside a compost bin to check their compostability and to determine the duration of composting.Biodegradable and compostable tableware is significantly more environment and nature friendly than disposable tableware and drinkware made of plastic. Tableware made of wheat bran, but also corn and rice bran is already commercially available. It is reasonable to use the by-products of the milling of also other cereals, like rye bran, barley bran and oat bran, for the production of tableware. The aim of this research was to explore the possibilities for the production of tableware and drinkware from the by-products of the milling of wheat and also other cereals like rye and oat bran. In order to achieve the aim, compacts were moulded from rye bran and oat bran and mixtures of bran (wheat bran and rye bran) using various work modes. The moulding of the compacts included different temperatures of the mould, moulding durations and compressive forces. The mechanical properties like density and flexural strength of the compacts were determined and the compostability of the compacts was studied. The test bodies were placed inside a compost bin to check their compostability and to determine the duration of composting.
Показать больше [+] Меньше [-]TECHNOLOGICAL, TECHNICAL AND QUALITY ASSESSMENT OF MAIZE SILAGE MAKING AND UNLOADING FROM TRENCH Полный текст
2024
Jasinskas, Algirdas | Pašvenskas, Gytis | Palšauskas, Mečys | Souček, Jiří
Silage for animal feeding can be made from different plants. One of the most important feed crops from which silage is made is maize. Special choppers can be used for cutting and chopping these coarse-stem plants. The most widespread silage preparation is done in trenches, where good quality silage can last for several years, making it one of the best feeds in winter. Incorrect picking and unloading of silage from trenches may result in secondary fermentation and may cause forage losses. Various types of equipment are used for silo unloading from storage. This work researches maize plants, the quality of maize silage and the process of silage making and unloading. The research was carried out in the laboratories of Agriculture Academy of Vytautas Magnus University and in a farmer’s farm. Tests have been performed with three different silo unloaders and a mobile feed mixer. The established average corn plant yield in 2018 was 31.8 t ha-1; for silage making, the plants were chopped with the drum chopper. After evaluation of the fractional composition of chopped mass, the chopped maize slices were found to meet the silage production requirements, as even 82.6% of the chopped particles were 3.15-16 mm long. Maize slice moisture was also found to be suitable for silage – 66.12±7.3%. The density of prepared silage was high enough and reached 699.89±19.04 kg m-3 or 230.55±6.27 kg m-3 DM (dry matter). Silage unloaders test results showed that one sample of silage could be unloaded in 31–43 s. The bucket type device could take the maximum weight sample – 567.8±77.0 kg, but the maximum density of the silage sample (30.41±1.95 kg m-3) could be taken by a block-cutting unit. Also, this unloader left the smallest unevenness on the feed surface. Distribution of feed in the farm for the animal was fairly even and this indicated that the silage-unloading device had no significant impact on the quality of feed distribution.
Показать больше [+] Меньше [-]SEASONALITY OF LITHUANIAN NATURE TOURISM: VISITOR‘S PREFERENCES Полный текст
2024
Varnagirytė-Kabašinskienė, Iveta | Mačiulytė, Ieva
Seasonality in the tourism sector is described as a change in tourism due to seasonal changes or a temporary change in tourist flows. In Lithuania, the tourism seasonality is recognized as a problem requiring a solution. This study has identified that every visitor/traveller who likes nature, prefers nature-based tourism or has plans to spend some time in nature is facing the tourism seasonality in Lithuania. The results of this survey support the idea that the most popular time for nature trips in Lithuania is summer time or the warm light season of the year. There are several reasons why visitors wish to go out to nature: many visitors hope to get good quality and exciting entertainment or educations, others are expecting for nature's aesthetic and other values, including beautiful landscapes and fresh air. Lithuanians usually choose nature trips with family or friends travelling by car for an average 3-7 days. The most of survey respondents plan trips in advance, search for information on the Internet, social networks, or use the recommendations of friends to visit one or another natural object, and almost do not use the services of tourism companies. Interest in one or another natural object and its attendance is primarily determined by weather conditions, activities and educations adapted to the exact season. This survey has shown that people wishing to choose non-seasonal natural tourism facing many problems. Depending on the season, tourism infrastructure could be more suited to all seasons, as well as respondents expect new educations adapted to different seasons or their indoor alternatives. In the recent years, more frequent extreme climate periods (heat, rainfall in summer, cold or wet periods in winter) have begun to change, most often reduce, visitor flows.
Показать больше [+] Меньше [-]QUALITY OF SWEET POTATO AS A RAW MATERIAL FOR FOOD PROCESSING Полный текст
2024
Sawicka, Barbara | Krochmal-Marczak, Barbara | Skiba, Dominika | Pszczółkowski, Piotr
The aim of the study was to assess the possible antioxidant and antiproliferative effects of various sweet potato extracts (Ipomoea batatas [L.] Lam) in terms of their suitability for food processing. Antioxidant activity of water infusions from the leaves of 5 sweet potato varieties (Carmen Rubin, Cananua, Georgia Jet, Satsumo Imo, White Triumph) obtained from field cultivation in Felin (51°13'N, 22°37'E) was determined. The field experiment was carried out using the randomized blocks method, in triplicate, in accordance with the principles of good agricultural practice. The leaves were collected at phase 68 according to the BBCH scale. After harvesting, the leaves were dried to constant weight. After drying, the leaves were saturated with water at 80 ° C and 100 ° C for 3, 6 and 9 minutes. The total content of phenolic compounds was determined by the method of Ghasemzadeh et al. Antioxidant activity of sweet potato leaf infusions was determined by DPPH radical spectrophotometry. The time to prepare the infusions significantly differentiated the TP content. Infusions evaluated after 3 minutes were the most favorable in this respect. The antioxidant activity of the tested infusions obtained from sweet potato leaves ranged from 33% to 59%, depending on the variety, and 34-43%, depending on the time the infusion was prepared. Leaf infusions prepared at 100°C had a higher antioxidant activity than infusions made at 80°C. The highest antioxidant activity was revealed by infusions from White Triumph cultivar leaves, lowest - from Cananua cultivar leaves.
Показать больше [+] Меньше [-]THE PROBLEMS OF MICROCLIMATE IN LITHUANIAN COWSHEDS Полный текст
2024
Bagdonienė, Indrė | Bleizgys, Rolandas
The experimental studies were carried out in the most common cowsheds in Lithuania. The cowsheds involved in the research featured different insulation patterns and livestock keeping technologies where cows were kept tied or loose. The efficiency of ventilation system was measured in 7 cowsheds based on the variation in air temperature, air relative humidity (RH) and ammonia. The main problems of microclimate in Lithuanian cowsheds were found to be as follows: a high relative humidity resulting in water vapour condensation on the roof structures; the air temperature is regularly below the recommended minimum of -7 °C; the air temperature is regularly above the recommended maximum of 25 °C. Optimization of the microclimate in cowsheds concerned, it is recommended to adjust the ventilation intensity based on the difference of air temperatures within the barn and outdoors. During cold months of winter it is recommended to keep the air temperature in semi-insulated cowsheds by 8–11 °C higher than that outdoors, whereas in uninsulated box-type cowsheds with roof cement – higher by 5–7 °C, and in uninsulated box-type cowsheds with roof metal – higher by only 3–5 °C. During severely freezing periods of outdoor temperature, the air temperature was found not to drop below -7 °C only in insulated cowsheds. Whereas during extremely hot days when the outdoor temperature rises above 26–28 °C, the cowsheds of all types (those insulated and uninsulated) were found to be too hot for cows. Consequently, thermal insulation of a cowshed’s roof and adjustment of the ventilation intensity are not sufficient for solving the problems caused by heat stress in the cowsheds.
Показать больше [+] Меньше [-]CREATED OF AN INTEGRATED QUALITY SYSTEM FOR THE PRODUCTION OF CANNED MEAT FOR CHILD NUTRITION Полный текст
2024
Voloshina, Elena | Dunchenko, Nina | Odintcova, Arina | Kuptsova, Svetlana | Fedotova, Olga
The development of an integrated safety and quality system at enterprises for the production of baby food includes measures thataimed at analyzing risks and identifying critical control points throughout the process. The article presents studies on the identification and analysis of hazards and assessing the severity of the consequences of their manifestation. In order to integrate, the international standards ISO 9001 and ISO 22000 were selected, on the basis of which the quality system processes were identified, the resources and requirements for them were determined, as well as the parameters for monitoring these processes, the criteria for evaluating the effectiveness and efficiency of the developed system were established. Within the framework of the integrated system, the main and interior processes were identified. The main processes include organization management processes, planning and implementation processes for safe and quality products, and processes for monitoring, analysis and improvement. Support processes include processes for managing the organization’s personnel, its infrastructure and production environment, as well as processes for managing documentation and records of the system.
Показать больше [+] Меньше [-]PRE-SOWING SEED TREATMENT WITH PHYSICAL STRESSORS INDUCES CHANGES IN AMOUNT OF SECONDARY METABOLITES IN NEEDLES OF PICEA ABIES SEEDLINGS Полный текст
2024
Kačiušis, Mantas | Sirgedaitė-Šėžienė, Vaida | Žemaitis, Povilas | Mildažienė, Vida | Paužaitė, Giedrė | Koga, Kazunori | Shiratani, Masaharu | Novickij, Vitalij | Baliuckas, Virgilijus
Tree resistance to pathogens is related to the general viability of trees, their growth energy, and ability to synthesize and to mobilize secondary metabolites (SMs), usually phenolic compounds, in tissues. The total phenolic content (TPC) in Norway spruce needles was determined during two vegetation seasons in order to compare the chemical background and ability of different Norway spruce half-sib families to synthesize TPC in response to seed treatment with physical stressors: cold plasma for 1 and 2 min (CP1, CP2) and electromagnetic field for 2 min (EMF2). TPC in seedling needles significantly differed between affected and control groups, but differences were stronger exerted during the first year of vegetation. In the first vegetation season, the strongest positive effects on TPC synthesis were induced by EMF2 treatment in 463 and 577 half-sib families, by CP1 treatment − in 457 half-sib family and by CP2 treatment − in 541 half-sib family; in the second vegetation season strongest effects were detected in CP1 treated 457 half-sib family and in CP2 treated 548 and 477 half-sib families. The half-sib families of Picea abies with higher TPC induced by seed treatment with different physical stressors could be more resistant to pathogens and diseases. The variance component of family for TPC variated from 14±10 % till 17±11 %, and was significant. The interaction of genotype and environment on TPC was as high as 49 ± 20%.
Показать больше [+] Меньше [-]THEMING DISCURSE IN VILLAGE DEVELPOMENT Полный текст
2024
Kazlauskienė, Ingrida | Atkočiūnienė, Vilma
The issues of the development of thematic villages are mostly investigated in Poland, Austria, Lithuania. Village development theming is usually defined as a strategy or model. It acts as a vehicle for village renewal, enabling even small villages to develop successfully in the age of globalization. An experiential marketing strategy guides village development towards sustainability and helps to ensure integration between village environmental, economic and social development dimensions. Thematic villages play a heuristic role, they "push" locals and customers out of established spaces, village storytelling schemes, and encourage the search for alternative life, behavior and business models. This research aim was achieved: to determine the characteristics of the village theming development: thematic space, integrated (complex) consumption, co-creation, recreation, interests (needs), experience. Thematic analysis, collation and other methods of scientific literature were applied. Representatives of the various stakeholders must be involved in the village development theming characteristics package planning, management and control processes. There is a two-way communication between the development of various thematic objects in economic, social and environmental terms and the creation of a thematic space which must serve not only the interests of the visitors but also the inhabitants.
Показать больше [+] Меньше [-]THE OPINION OF FOREST OWNERS ON EUROPEAN UNION SUBSIDIES INTENDED FOR FOREST MANAGEMENT IN LATVIA Полный текст
2024
Bermanis, Raimonds | Straupe, Inga | Zvirbule, Andra
To clarify the opinion of Latvian private forest owners on the use of EU funding in forest management, a survey of forest owners (Latvia University of Life Sciences and Technologies grant project No. Z7 funding) was conducted in November 2018 by the staff members of the Forest Advisory Service Centre (FASC) which is a branch of the Latvian Rural Advisory and Training Centre. A total of 153 forest owners have been included in the survey, of whom 107 (70%) forest owners have previously used EU funding support in forest management, and 46 forest owners (30%) who have not used this opportunity. The respondents included in the survey represent forest owners from all regions of Latvia. The survey included general questions describing the profile of the forest owner, such as the size of the owned forest area, for how long the forest has been the owner’s property, knowledge of forest management and the way of receiving information. Regarding the attracting of EU funding, the forest owner's view of the already used EU support and its type was clarified and the overall level of satisfaction, the necessary improvements, and the type of EU support needed for further forest management were identified. The study also includes the results of other similar surveys carried out by other institutions on forest owners’ opinions on EU support for forestry. The results of the survey conducted by FASC confirm that 76% of forest owners who have already used some measures of the EU's financial support at least once are ready to take advantage of the opportunity to apply for the support also in the future. The forest owners, who have not used EU financial support for forest management so far, continue to express sceptical opinions, and only 46% of such respondents would be willing to apply for further EU support funding. When comparing the priority support directions specified by forest owners, it can be concluded that the trends in the need for subsidies are fairly similar, 80% of owners who have previously used the financial EU support, point out that support for young stand and advanced growth thinning is still needed in the future. The same opinion has been expressed by 70% of forest owners who have not previously used the EU funding. In a series of studies, a general trend for priority of most desirable EU subsidies have been identified and it was revealed that 61% of forest owners want to receive support for young stand and advanced growth thinning. Half of this percentage of respondents have pointed out the need for EU subsidies for forest amelioration and road construction (32%), forest establishment (31%), forest regeneration (30%) and for compensations of the protection of natural values and for it management (29%).
Показать больше [+] Меньше [-]THE ROLE OF INNOVATION IN SUSTAINABLE REGIONAL DEVELOPMENT: CASE OF LATVIA Полный текст
2024
Štefenberga, Dace | Sloka, Biruta
Innovation – it is a term that we use for decades, but true meaning of this term changes also for decades, according to dynamic environment we are living in. There is now beginning of the 4th industrial revolution and what has been said in World Economic forum, issues are not about technologies anymore, they are about society. Innovation and entrepreneurship in regions is one of essential tools, in added value creation in economics and in development in national level. It is very important to encourage creativity, new ways of thinking and continuous process of learning of individuals. There are some different approaches how to measure competitiveness of state economy and competitiveness in regional level. Statistical data shows situation from point of view in national level, Regional level and local community level have to be researched detailed, and every situation, which can make impact on level above, have to be taken into account. Research methods, used for these studies were analysis of scientific papers, strategic planning documents and guidelines of EU and Latvia and survey of inhabitants of local community what are their opinion about participation in the processes to make changes in development of region and local community. Main results were related with issue, that tenants of region at very low level evaluate impact of state as institution and management system in national level, better evaluation of local government institutions, but at the same time there is lack of desire to participate actively in processes of local community to encourage changes in regional level. Key words: innovation, regional development.
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