Potravinarstvo Slovak Journal of Food Sciences
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Improving the quality and the technology of processed cheeses
Full text linkThis article investigates processed cheese's nutritional value and safety by adding vegetable additives (dry Spirulina powder). Processed cheese for lunch is taken as a basis for the formulation. As a control, we took cheese made according to classical technology. We used cheeses from cow's milk. We used combined raw materials in the developed technology: cow's and goat's milk cheeses. Spirulina was added to the formulation as an enrichment agent in the 1%, 2%, and 3% ratio, respectively. The sample with a 1% addition was found to be rational according to the results of the organoleptic evaluation. The formulation was optimised in further study by selecting 0.5%, 1.5% and 2%. A centre composite plot was used to add points around the pre-lagged optimum. A regression formula was obtained, and the melting salts and the dosage of the added enrichment agent were determined. Also, the share of cheese from goat's milk in the recipe of processed cheese was determined. The recipe was calculated on the principle of material balance. Experimental samples were examined for fatty acid and amino acid composition. The tables compare the best sample on organoleptic evaluation with the control. It was found that when 3% is added, the cheese acquires a dark green tinge. The colour is deep green when 2% is added; when 1% or less is added, the colour is salad. The dose of melting salts in the recipe was reduced to 2%; in the classic recipe, it was 3.9%. The protein of the experimental sample turned out to be closer to the ideal protein. PDCAAS is equal to 96.9, while in the control sample, PDCAAS is equal to 39.9. Also, when comparing the fatty acid composition, the thrombogenicity coefficient was lower in the experimental sample than in the control
Physical and mathematical modelling of the massing process of marinated pork and beef preparation technology
Full text linkThe main process in the technology of natural marinated semi-finished meat products is the marinating process, which depends on the marinating method, temperature conditions, and composition of the marinade mixture. To enhance the distribution of marinades within the meat, mechanical processing of the raw material is necessary, specifically using the massaging process, to achieve uniform distribution of curing agents, changes in structure, and increased activity of enzymatic systems utilized in marinades. The main goal of this study is to model the massaging process, which allows the processing of the obtained experimental data in the form of a criterion equation. For the research, 8 samples were used, including 3 experimental pork samples and 1 control, as well as 3 experimental beef samples and 1 control. The main components of the samples include pork meat, beef meat, canola oil, sunflower oil, olive oil, curing ingredients, spices and seasonings, bromelain enzyme, and yeast extract. To carry out the massaging process in the investigated procedure, a massager of the model MAL 50-1500 was employed. The research results indicate that the determined mass transfer equation demonstrates a predominant influence in the investigated massaging process, involving changes in the concentration of sunflower, canola, and olive oil in the product, affecting the diffusion coefficient, size of dispersed phase particles, and mass transfer coefficient within the load
Food taboo and dietary habits among low-income people in Kedah, Malaysia
Full text linkFood beliefs and taboos about certain foods influence the use and consumption of food in the household. Today, especially in rural areas, some people believe certain foods affect health. This practice has resulted in the non-optimized intake of some food categories. As a result, it is not easy to diversify the types of food for daily diet. This study aims to investigate the beliefs and convictions of rural communities in Kedah regarding certain foods that may influence health. This study also identified the pattern of food intake among residents in rural areas of Kedah State following the belief that some foods can affect health. This study focuses on the rural areas of Kedah State, which include Kubang Pasu, Baling, Pendang, Alor Setar, and Kuala Muda districts. A total of 225 farmers in the rural areas of the selected districts were selected using stratified random sampling. The data were analyzed using SPSS 25 and food intake results. The results of the study show that low-income residents in rural areas of Kedah believe that some foods have an impact on health. A total of 37.11% believe that coffee, carbonated drinks, fresh milk, and low-fat milk cause headaches, stomach aches, heartburn, and nausea, followed by 18.66% who admit that spicy foods such as mutton, beef, and durian cause headaches, high blood pressure and skin problems. The impact of the food taboo has resulted in an overall food consumption rate below 29.9 in households of low-income residents in rural areas in Kedah State. The study's findings suggest that the Malaysian Ministry of Health should develop nutrition and health awareness programs and activities for the rural population. At the same time, there is a need for a comprehensive restructuring of the curriculum and syllabus by addressing the need for healthy eating as early as primary school so that nutrition and health awareness can be embedded in early childhood education
Food safety and food security through predictive microbiology tools: a short review
Full text linkThis article discusses the issues of food safety and food security as a matter of global health. Foodborne illness and deaths caused by pathogens in food continue to be a worldwide problem, with a reported 600 million cases per year, leading to around 420,000 deaths in 2010. Predictive microbiology can play a crucial role in ensuring safe food through mathematical modelling to estimate microbial growth and behaviour. Food security is described as the social and economical means of accessing safe and nutritious food that meets people's dietary preferences and requirements for an active and healthy life. The article also examines various factors that influence food security, including economic, environmental, technological, and geopolitical challenges globally. The concept of food safety is described as a science-based process or action that prevents food from containing substances that could harm human health. Food safety receives limited attention from policymakers and consumers in low- and middle-income countries, where food safety issues are most prevalent. The article also highlights the importance of detecting contaminants and pathogens in food to prevent foodborne illnesses and reduce food waste. Food and Agriculture Organization (FAO), an institution belonging to World Health Organization (WHO) presented calls to action to solve some of the emerging problems in food safety, as it should be a concern of all people to be involved in the pursue of safer food. The guarantee of safe food pertaining to microbiological contamination, as there are different types of active microorganisms in foods, could be obtained using predictive microbiology tools, which study and analyse different microorganisms' behaviour through mathematical models. Studies published by several authors show the application of primary, secondary, or tertiary models of predictive microbiology used for different food products
Transforming livestock by-products into nutritious extruded feed additives: a sustainable approach for modern agriculture
Full text linkThe search for a solution to the challenge of providing the agriculture industry with complete feeds is relevant to modern animal husbandry in many countries, and protein is a key limiting component in feed. Along with the growth of food production, the waste it produces, which is also a valuable resource of useful components, can be recycled and used. Thus, in slaughter, butchering and meat production, a large amount of waste is generated, including by-products that can be processed further. The extrusion process is one of the best processing methods to improve the nutritional value of ingredients and feed and improve feed efficiency. In modern feed milling operations, extrusion must be considered as the main process for increasing feed profitability. The benefits of the extrusion process in improving the nutritional value and efficiency of ingredients and feeds depend on many factors, such as the structure and chemical composition of the ingredients, the processing conditions and the equipment used in processing. This article substantiates the need to develop technologies for involving production waste in their further use in medium- and long-term growth in the demand for food. A technology for producing an extruded feed additive based on vegetable feed with the addition of slaughter waste is presented. The formulation of a feed additive in which different percentages of slaughter waste of 5.10% and 15% corn was replaced with by-products was studied. The water activity of the obtained extruded feed additives was studied, where, at a content of 15% slaughter waste, it was low compared with that of the other two samples. Further research will allow procuring fodder products with a high biological value and utilising unclaimed by-products of livestock slaughter
Chicken combs as a raw material in the manufacturing of chopped semi-finished horse meat products
Full text linkFood safety stands at the forefront of social policies across nations. Secondary meat raw materials present a potential source for meat production. Our research objective was to analyze the nutritional value and functional-technological properties of horsemeat and protein additives of animal origin, particularly secondary meat raw materials such as chicken combs. We also sought to empirically determine their optimal quantities for developing chopped semi-finished horsemeat products, which are protein-enriched and have high consumer appeal. We aimed to establish efficient methods for utilizing collagen-rich materials like chicken combs. Additionally, we assessed the feasibility of using slaughter by-products and the potential of minced meat and pastry products as valuable raw material sources. Based on our findings, we deduce that chicken combs, a lower-value secondary raw material, possess notable physical, chemical, and safety properties. These traits underline its high biological worth and environmental benignity, qualifying it as a viable ingredient for protein enrichment and as an additive in minced meat and paste product manufacturing
Advancements in nano bio sensors for food quality and safety assurance – a review
Full text linkNano-biosensors are rising as a promising technology for ensuring the protection and high-quality of meals merchandise. They offer excessive sensitivity, selectivity, and speedy reaction, making them ideal for detecting contaminants, pathogens, and first-rate signs in meals samples. This up to date evaluate affords a complete evaluation of recent improvements in nano-biosensor technology for meals great and safety warranty. The evaluate covers the essential standards and kinds of nano-biosensors typically utilized in meals evaluation, exploring various nanomaterials and their unique homes and sensing talents. It also discusses mixing nanomaterials with biological reputation elements, antibodies, enzymes, and DNA aptamers to enhance sensor performance. The software of nano-biosensors in detecting chemical contaminants, which includes pesticides, heavy metals, and mycotoxins, is drastically protected. Nanomaterials allow ultrasensitive detection of these contaminants, even at trace stages, ensuring the protection and compliance of meal products. The review also explores the usage of nano-biosensors for rapid identification and quantification of foodborne pathogens, such as microorganisms, viruses, and parasites, allowing on-web page pathogen detection and timely interventions to prevent outbreaks. Additionally, the review highlights the tracking of meals satisfactory signs of using nano-biosensors, including freshness, spoilage, and dietary composition. Accurate assessment of those parameters offers treasured information to manage and predict shelf-life. Overall, the advancements in nano-biosensor generation maintain high-quality promise for ensuring the integrity of meals products, defensive public fitness, and assembly regulatory standards
The microscopic structure of pork neck after cooling with showering stiving and processing by culture Lactobacillus sakei
Full text linkMicrostructural changes in meat that occur during refrigerated storage depend on the hygiene of slaughtering and primary processing of animal carcasses, their cooling conditions, storage period, and microbial contamination and reflect the processes of meat maturation and spoilage. To extend the shelf life of pork in half-carcasses in a chilled state, 20 heads of 6-month-old large white pigs were used, which were delivered to the meat processing enterprise for slaughter. All half carcasses were cooled in a refrigerating chamber using showering, 1 hour later they were divided into 2 groups: control (without treatment) and experimental with the final treatment with a suspension of lactic acid bacteria of the SafePro® B-2 strain (Lactobacillus sakei). It has been found that cooling of pork half-carcasses in a refrigerating chamber with stiving and final processing by a culture suspension of lactic-acid microorganisms of strain SafePro® B-2 (Lactobacillus sakei) on the 4th day of storage had a positive effect on the microscopic structure of the pork neck and was characterized by a uniform color distribution when histologic specimens of muscular tissue are colored with hematoxylin and eosin, and minor cracks in the sarcoplasm, preservation of transverse and longitudinal striation of muscular fibers in comparison with that of the unprocessed pork half-carcasses with cultures of lactic-acid microorganisms. The microscopic structure of the muscular tissue of the pork half-carcass neck after cooling with stiving and final processing by a culture of lactic-acid microorganisms of strain SafePro® B-2 for 7 days of storage had a more distinct histoarchitecture in comparison with that of the unprocessed pork half-carcasses, as well as was characterized by insignificant areas of muscular fibers with transverse cracks, suspended development period of autolysis processes, partial preservation of transverse and longitudinal striation of muscle fibers. This points to a positive effect of lactic acid bacteria of strain SafePro® B-2 (Lactobacillus sakei) on the quality of the pork meat and contributes to the extension of its shelf life under chilled vintage
Evaluation of commercial rice grains present in the Amman market
Full text linkRice is a staple food that contributes to significant energy intake. Jordan relies on importing to provide the market with the required quantities of rice. Different varieties from different sources with various qualities are available in the market. This study aimed to evaluate the quality of rice available in the markets in Amman city-Jordan. Twenty-five brands (three samples from each brand) were collected. Samples were evaluated regarding chemical composition, dimensions before and after cooking, percentage of different defects, pasting profile (pasting temperature, peak viscosity, peak time, trough, and final viscosity), whiteness, transparency, and milling degree. All rice samples tested comply with the Jordanian standard except for chalky kernels (four brands), heat-damaged kernels (one brand), and insect infestation (two brands). All samples that did not fulfil the Jordanian specifications were from the long-grain rice. Medium-grain rice has higher whiteness, transparency, milling degree, moisture, starch, peak viscosity, trough, and final viscosity than long-grain rice. On the other hand, long-grain rice has a higher protein, pasting temperature, and peak time. There were significant differences in pasting and chemical composition parameters within the two groups of grain sizes. The average elongation ratio for all samples was 1.57 ±0.14, with significant differences between different brands. Due to the higher pasting temperature and peak time, long-grain rice requires more energy during cooking than medium-grain rice
Supply chain management analysis of avocado in south Sumatra province through the Food Supply Chain Network (FSCN) method
Full text linkOne of the agricultural sub-sectors that occupy a strategic position in agricultural development is the horticultural sub-sector, with one of its potential commodities being avocado. Avocado is one of the export-based commodities, especially in South OKU Regency, South Sumatra Province. This study aims to obtain an overview of the Avocado Agribusiness Supply Chain management in South OKU Regency. The study was conducted in Warkuk Selatan District, South OKU Regency in February 2022. The research method used was a qualitative descriptive method with a type of data using primary data and secondary data. The data analysis method uses the Food Supply Chain Network (FSCN) method, which illustrates South Oku Regency's avocado supply chain model. The results showed that the Avocado Management Supply Chain Management model with the FSCN framework consisted of four main components: the supply chain structure, the business chain process, supply chain management, and supply chain resources. Avocado supply chain targets are still dominated to meet the domestic market and products in the form of fresh avocados for consumption. Avocado supply chain management comprises election partners, contractual agreements, transaction systems, government support, and supply chain collaboration. The avocado supply chain structure in South OKU Regency consists of farmers, collecting traders, local and non-local traders, retailers, and consumers with respective roles in the supply chain structure. Business processes in avocado supply chain management consist of procurement, replenishment, and customer order cycles. Based on marketing margin analysis, the lowest total marketing margin is found in channel IV, with a margin value of Rp 1,500 per kg. The four avocado marketing channels in South Warkuk Ranau District have Farmer’s Share ≥40%, so it is categorized as an efficient channel