Background. There is a need to develop new foods for participants of expeditions in extreme conditions, which must be self-sufficient. These foods should be light to carry, with a long shelf life, tasty and with high nutrient density. Currently, protein sources are limited mainly to dried and canned meat. In this work, a protein-rich dried concentrate suitable for extreme expeditions was developed using soya, tomato, milk whey and meat by-products. Materials and methods. Protein concentrates were developed using minced beef liver and heart, dehydrated and mixed with a soya protein-lycopene coagulate (SPLC) obtained from a solution prepared with germinated soybeans and mixed with tomato paste in milk whey, and finally dried. The technological parameters of pressing SPLC and of drying the protein concentrate were optimized using response surface methodology. Results. The optimized technological parameters to prepare the protein concentrates were obtained, with 70:30 being the ideal ratio of minced meat to SPLC. The developed protein concentrates are characterized by a high calorific value of 376 kcal/100 g of dry product, with a water content of 98 g·kg -1 , and 641-644 g·kg
Background. There is a need to develop new foods for participants of expeditions in extreme conditions, which must be self-sufficient. These foods should be light to carry, with a long shelf life, tasty and with high nutrient density. Currently, protein sources are limited mainly to dried and canned meat. In this work, a protein-rich dried concentrate suitable for extreme expeditions was developed using soya, tomato, milk whey and meat by-products. Materials and methods. Protein concentrates were developed using minced beef liver and heart, dehydrated and mixed with a soya protein-lycopene coagulate (SPLC) obtained from a solution prepared with germinated soybeans and mixed with tomato paste in milk whey, and finally dried. The technological parameters of pressing SPLC and of drying the protein concentrate were optimized using response surface methodology. Results. The optimized technological parameters to prepare the protein concentrates were obtained, with 70:30 being the ideal ratio of minced meat to SPLC. The developed protein concentrates are characterized by a high calorific value of 376 kcal/100 g of dry product, with a water content of 98 g•kg-1 , and 641-644 g•kg-1 of proteins. The essential amino acid indices are 100, with minimum essential amino acid content constituting 100-128% of the FAO standard, depending on the raw meat used. These concentrates are also rich in micronutrients such as β-carotene and vitamin C. Conclusion. Analysis of the nutrient content showed that these non-perishable concentrates present a high nutritional value and complement other widely available vegetable concentrates to prepare a two-course meal. The soups and porridges prepared with these concentrates can be classified as functional foods, and comply with army requirements applicable to food products for extreme conditions.
Study on the effect of supercritical extracts of mint (Mentha piperita L.) and clove (Syzygium aromaticum L.) on the oxidative stability of soybean oil is presented. Extracts were obtained using supercritical fluid extraction and then added to soybean oil at two different concentrations. The effect of the extracts on the stability of soybean oil during the storage period was studied by determining the peroxide and acid values. Mint extract (M. piperita) was analyzed by HPLC with MS / MS identification. A total of 21 different biologically active components were identified in M. piperita SC-CO2 extracts. The oxidative stability of the soybean oil samples enriched with supercritical extracts of clove and mint was higher than in the control sample (without addition of supercritical extracts). Supercritical extracts can be recommended as a source of natural antioxidants to extend the shelf life of vegetable soybean oil.
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