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Environmental sustainability aspects in short food supply chains: The views of organic farmers and consumers Full text
2023
Ušča, Maija | Aļeksējeva, Lāsma
Globally, food systems are the most significant cause of environmental change; therefore, efforts to create more environmentally sustainable food systems are presented. One of the directions is strengthening the local actors and short food supply chains. Simultaneously, changes in farming systems are needed, and organic agriculture is one of the ways to make food systems more environmentally sustainable. Despite the abundance of research on the environmental consciousness of consumers in short food supply chains, the question is raised whether local food chain farmers are also committed to environmental sustainability. Therefore, this paper aims to explore the importance of environmental sustainability to organic short food supply chain actors. More specifically, the research depicts the views of organic farmers and consumers and their relation to the actual environmental sustainability of short food supply chains. During the research, a specific short food supply chain – a direct purchasing network – was explored. A qualitative approach was applied to reach the aim. Thus, in-depth interviews and observations were used as a research method. The research results demonstrated the views of farmers and consumers of the specific network regarding environmental sustainability aspects in the network. In the research, such environmental aspects as the circularity of resources, biodiversity, chemicals in the environment, seasonality and locality of diets, and the distance (food miles) were admitted as crucial ones by the specific short food supply chain actors. The differences in opinions of consumers and farmers emerged when thinking about the scale of their views.
Show more [+] Less [-]Barriers to agricultural products diversification: An empirical analysis from lotus farming in Central Vietnam Full text
2023
Nguyen, Chung Van | Abwao, Martin | Nguyen, Hue Van | Hoang, Ha Dung
Poverty alleviation, employment creation, environmental conservation and income augmentation can be transformed based on agricultural diversification. Lotus farming is considered as a solution to improve income and livelihood for smallholder farmers. Many different products and values can be explored from lotus farming including lotus flower, lotus root, lotus seed, lotus fibre, as well as combining ecotourism. But many barriers are preventing the lotus products diversification of lotus growers. This study will provide a better understanding of lotus farming and explore the barriers to lotus products diversification and causes of these barriers. Phong Dien district, central Vietnam was selected as a case study. The qualitative research was applied through 54 semi-structured interviews including lotus growers, lotus buyers and officers of local government, as well as one focus-group discussion, observation method and secondary data from statistical data and reports were also conducted. The research findings indicated that there is a big gap between lotus products diversification of lotus growers and available lotus products on the market. Lotus growers only grow and sell raw products, of which, fresh unshelled lotus seed is the main product. Lack of knowledge, worries on loss, lack of market and market information, lack of labour and machines and traditional production habits are main determinants of the barriers. Characteristics of lotus seed, high production and monopoly of collectors are different features in barriers to lotus product diversification compared to other crop diversification.
Show more [+] Less [-]Municipal transport route planning based on fair mobility budget Full text
2023
Arhipova, Irina | Bumanis, Nikolajs | Paura, Liga | Berzins, Gundars | Erglis, Aldis | Rudloff, Christian | Vitols, Gatis | Ansonska, Evija | Salajevs, Vladimirs | Binde, Juris
A series of initiatives have been adopted in the European Union to address greenhouse gas emissions and establish a society that is resilient to climate change. In response to these initiatives, the implementation of mobility budgets offers a more precise strategy for addressing carbon footprints associated with travel. Prioritizing localized carbon footprint control, mobility budgets are calculated and customized according to distinct regions, goals, and target demographics. When prioritizing the mobility budget as the central objective in municipal transport route planning, the focus should encompass principles of fairness and equity in travel. This entails considering factors such as accessibility, variety of mobility choices, inclusivity of transportation modes, and social justice. Therefore, this article aims to formulate an enhanced activity modelling methodology that would aid data-driven decision-making in municipal transport route planning, while upholding the principles of travel fairness and equity. Тhe results obtained from scrutinizing data related to public bus services and mobile networks are presented. The evaluation of Jelgava’s city transportation network to facilitate mobility budget reduction is undertaken, and this assessment is based on an analysis of data derived from a survey on public transport use coupled with an examination of the city’s mobility budget. The research presents the communication challenges that municipalities will face in planning and implementing changes that are needed to meet the greenhouse gas emission targets and outlines the possible use of visualization tools for modelling, explanation and communication of scenarios.
Show more [+] Less [-]Potatoes as wheat flour substitute in gluten-free pastry cream Full text
2023
Kince, Tatjana | Zilinska, Elina | Galoburda, Ruta | Tomsone, Lolita | Straumite, Evita | Goldmanis, Juris | Sabovics, Martins
Pastry cream contains wheat flour, which is not suitable for celiac patients who require a gluten-free diet. Potatoes are known as a good source of starch, minerals and vitamins. They also contain protein, dietary fibre and various phytochemicals. Their addition to pastry cream can both serve as a texturizing agent and enrich the nutritional value of the final product. This study aimed to evaluate the suitability of potatoes as a replacement for wheat flour in pastry cream. For study purposes, the physicochemical attributes of eleven potato varieties were evaluated. Among other varieties, the boiled potato variety Gala exhibited higher fibre, fat, phosphorus and potassium content; however, significantly higher protein (12.48 ± 0.08 g 100 gE−1 DW) and iron (3.12 ± 0.02 g 100 gE−1 DW) content. Higher antiradical activity (18.72 ± 0.74 mM TE 100E−1 g DW) was detected in potatoes of the variety Blue Congo. After preliminary investigation, wheat flour was replaced with mashed potatoes, making up 30% of the cream weight, and its impact on the pastry cream was studied. It was established that potatoes had a significant effect on pastry cream colour and texture. American Rose, Imanta, Rigonda and Viviana were selected as the most suitable from the eleven varieties tested. The addition of potatoes in pastry cream doubled its fibre and potassium content, whereas, other changes in nutritional value of the creams were variety dependent.
Show more [+] Less [-]Fatty acid composition of different breed goat milk Full text
2023
Marcinkoniene, Liga | Ciprovica, Inga
The chemical composition of goat milk, especially fatty acid profile is recently renewed due to the role of monosaturated and polyunsaturated fatty acids in human nutrition. These nutrients are important to analyse in connection with the different breeds receiving the same breeding and feed. The aim of this study was to analyse goat milk fatty acid profile in relation to different breeds. Specimens for fatty acid analyses were collected from individual animals of breeds like Latvian Native (n=5), Saanen (n=5), and crossbreeds (n=5). Bulk milk samples (n=5) were also taken for milk quality testing and fatty acid range determination. Fat content was analysed according to ISO 1211:2011 and fatty acids were measured with the chromatographic method. Protein, lactose, casein and urea concentration was analysed according to ISO 13366-2:2007 and somatic cell count to ISO 9622/IDF141:2013.The highest fat concentration was determined in crossbreed milk samples (3.81 g 100 gE−1) and the lowest (2.96g 100 gE−1) in the Latvian Native breed goat milk samples. The highest butyric acid (0.12 g 100 gE−1) and caproic acid (0.12 g 100 gE−1) concentration was established in Saanen goat milk samples. Compared to other breeds, the milk of the Latvian Native breed goats is characterised by a higher capric acid (0.20 g 100 gE−1) concentration, while a higher concentration of total unsaturated and monounsaturated fatty acids was detected in the samples of crossbreed goat milk. The average fatty acid composition of bulk milk samples was 68% for saturated fatty acids, 23% for monosaturated fatty acids and 4.3% for polyunsaturated fatty acids. In analysed goat milk samples, fatty acids showed the characteristic fatty acid profile of goat milk.
Show more [+] Less [-]Evaluation of pine cone syrups and changes in physical parameters during storage Full text
2023
Karklina, Klinta | Ozola, Liene
There is an increasing demand for natural and healthy food products that play a multifunctional role in human diet. Pine cone syrup has long been known and used for its medicinal purposes. As part of the research, a syrup was developed from green pine cones, which can be used not only in cases of colds, but also in everyday life. The aim of the research was to evaluate different pine cone syrups produced by brown and white sugar and analyse their physical parameter changes during storage. Syrups were characterised by volatile compounds and their changes depending on the type of sugar used. The content of soluble solids, pH, viscosity and titratable acid during storage were analysed as well. A total of 33 volatile compounds were detected in syrup made with white sugar (SWS) and 36 in syrup with brown sugar (SBS). Of the compounds detected, sample SWS was characterised more by compounds giving a pine and resinous aroma, while sample SBS was characterised by a pine and citrus aroma. The determination of the soluble solids content of syrups, irrespective of the type of sugar chosen, using the t test analysis there is no significant differences (p>0.05). The average soluble solids of 63.2 ± 0.6 °Bx for sample SBS and 62.7 ± 0.6 °Bx for sample SWS, complies with the legislation on soluble solids content of syrups (62 °Bx). No significant difference was found between sample pH, which for both samples was 3.5. Sample SBS on average had a higher viscosity (0.102 ± 0.001 Pa·s) than sample SWS (0.09 ± 0.001 Pa·s) and it was noticed that the sample became more viscous during storage.
Show more [+] Less [-]Evaluation of fatty acid composition in amaranth pasta developed for a vegan diet Full text
2023
Marisheva, Alla | Beitane, Ilze
Consumers’ growing demand for vegan products creates a need for new nutrient-dense products. Amaranth seeds are characterised as a nutritious product due to the content of proteins, fats, etc. Considering the high-quality fats and their amount in amaranth seeds, the aim of this study was to analyse the profile of fatty acids in amaranth pasta which was developed for a vegan diet. Seven samples: amaranth, amaranth-oat, and amaranth-buckwheat pasta in different ratios, were analysed in the study. The preparation of samples for analysis was carried out according to LVS EN ISO 6498:2012; fatty acid composition was determined using thug/MS analytic method. The highest total fat content was determined in the amaranth pasta – 5453.62 mg 100 gE−1 of product, followed by the amaranth-oat pasta (85%/15%) – 4988.14 mg 100 gE−1 of product and amaranth-oat pasta (70%/30%) – 4772.93 mg 100 gE−1 of product. In the developed pasta samples, over 70% of total fat was unsaturated fatty acids and more than one-third of total fat was PUFA. The highest PUFA/SFA ratio was determined for amaranth-oat pasta (70%/30%), amaranth-buckwheat pasta (85%/15%), and amaranth-buckwheat pasta (70%/30%). Quantitatively, the essential fatty acids were oleic acid, linoleic acid, and palmitic acid. The triterpene squalene was detected with a probability of 90% in all amaranth, amaranth-oat, and amaranth-buckwheat pasta samples. The developed pasta for a vegan diet contains good-quality fat.
Show more [+] Less [-]Effect of coating on physico-chemical characteristics of puffed wheat grains Full text
2023
Konkubaeva, Nurzat | Juhnevica-Radenkova, Karina | Radenkovs, Vitalijs | Galoburda, Ruta
Durum wheat (Triticum turgidum) is used for the production of various ready-to-eat products such as breakfast cereals, puffed grains, and extruded products. Technological processes of grain processing and the addition of different ingredients cause changes in the physical and chemical properties of the product, which give puffed grains a unique porous structure and change their nutritional value. This study aimed to evaluate the effect of coating on the physico-chemical characteristics of puffed wheat grains depending on the coating material. The study revealed that the application of coating increased dry matter and thousand-kernel weight (TKW). Water activity decreased in puffed grain without coating (BZ), and puffed grain with whey powder (MC) compared to wheat grain. The reduction in the moisture content increased the crispiness of product. Application of coating led to a decrease in the hardness of both MC and puffed wheat grain with vanillin and sugar (BV). Applying additives to the product’s surface led to a decrease in the water absorption index (WAI). The water solubility index (WSI) increased in the MC and BV samples. Samples BZ, BV and MC had higher L* (lightness) values than wheat grains because the puffing process expanded the cells, confirmed by scanning electron microscopy, and caused starch gelatinisation. The a* (redness) value of wheat was greater than that of BZ, BV and MC, which may be due to the partial removal of the outer layer of wheat grains. The milled samples of BZ, BV and MC were slightly darker, having lower L* values, compared to unprocessed wheat grain.
Show more [+] Less [-]Effect of storage period on acid value and sensory attributes of puffed wheat grains ‘Badyrak vanilla’ and ‘Badyrak with whey’ Full text
2023
Konkubaeva, Nurzat | Kulmyrzaev, Asylbek | Deydiev, Anarseit | Radenkovs, Vitalijs | Galoburda, Ruta
Puffed grains made from whole wheat, corn or rice grains are ready-to-eat breakfast cereals that do not require additional preparation. Two recipes for puffed grain coatings were developed in the previous studies. Sunflower oil was used in the coating, which may affect storage stability. Due to lipid hydrolysis, free fatty acids may be released, causing rancid off-flavour. The aim of this study was to determine the changes in the acid value of lipids and sensory attributes of sweet-coated puffed wheat grains ‘Badyrak vanilla’ (BV) and ‘Badyrak with whey’ (MC) depending on temperature during their eight-month storage. The products were packaged in metallised polypropylene pouches, 30 g each. The acid value was studied monthly at different storage temperatures (20 ± 2 °С and 4 ± 2 °С). In puffed wheat grain products, 65% of fatty acids are polyunsaturated, 25% monounsaturated, and 10% saturated. The high proportion of unsaturated fatty acids over saturated makes oil more susceptible to oxidation. Literature studies and sensory evaluation of puffed wheat grains allowed setting a limiting acid value at 4.0 mg KOH gE−1 lipids. The increase in acid value was storage temperature dependent. Thus, the acid value exceeded the established limit in the fifth month for MC and the sixth month for BV when stored at 20 ± 2 °С. At the same time, noticeable changes in puffed wheat grain flavour were observed. The temperature coefficient (Q10) for MC was 2.0, whereas for BV it was 1.5, indicating that the acid value increase in MC was more affected by temperature than that in BV.
Show more [+] Less [-]Organic milk as medium for lactic acid bacteria growth: A review Full text
2023
Sabunevica, Stefanija | Zagorska, Jelena
In recent years, the demand for organic fermented dairy products has been growing. Lactic acid bacteria (LAB) are of major interest in the food industry due to their ability to form the quality and functionality of fermented products. A significantly higher LAB cell count is presented in organic (ORG) fermented products such as yoghurt and kefir, than their conventional (CONV) counterparts. There is still a lack of information on the possible explanation and evidence of ORG milk as a better medium for LAB growth. The aim of the present review is to summarise the results of research articles on the milk compounds and their effect on LAB growth, and to identify differences between ORG and CONV milk that may provide a plausible explanation for their influence on LAB growth in ORG milk. The monographic method was used in this study. According to the previous research, significant differences were established in a content and range of carbohydrates, nitrogen sources, fats, macro elements and microelements, as well bioactive compounds in ORG and CONV milk. The composition of ORG milk may have potential benefits for the development of LAB due to the higher concentration of peptides and long-chain polyunsaturated fatty acids in it.
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