Potravinarstvo Slovak Journal of Food Sciences
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Development of new technologies (recipes) to produce pasta with the addition of millet and the determination of organoleptic and physicochemical quality indicators
Get PDFThe article presents the organoleptic and physicochemical (humidity and strength) quality indicators of pasta with the addition of millet at 7.7, and 15.5%, as a new recipe for pasta production. Millets can be used to supplement pasta because of their superior nutritional value and health advantages. On the territory of the Republic of Kazakhstan and the Eurasian Economic Union, the quality indicators were calculated while taking into account the practices outlined in the standardized documents. Express drying, accelerated drying, drying to a constant mass, and employing the MA-30 "SARTORIUS" apparatus following interstate standards were all employed. The study aimed to achieve appropriate organoleptic quality indicators and physicochemical indicators of humidity up to 28% (after processing pasta with the addition of millet 7.7, and 15.5%. Approximately 100 trials were carried out at the Federal State Autonomous Scientific Institution "Scientific Research Institute of the Bakery Industry" Russian Federation, Moscow. According to the study's findings, all quality indicators are within acceptable ranges, except for pasta with the addition of millet 23.3%, recipes for pasta with the addition of millet have been developed, a utility model patent has been obtained in the territory of the Republic of Kazakhstan No. 7071, issued by the Republican State Enterprise on the right of economic management "National Institute of Intellectual Property". In conclusion, pasta recipes with the addition of millet have been developed. According to the study's findings, all quality indicators are within acceptable limits except pasta with the addition of millet, which accounts for 23.3% of the total.
Mathematical modelling of quality assessment of cooked sausages with the addition of vegetable additives
Get PDFWe studied the physicochemical composition and functional and technological properties of plant additives - wheat fibre with pumpkin pectin (WFwPP). The nutritional value of cooked sausages was increased when fibre was added to the recipe. We have replaced fatty pork meat with up to 5% WFwPP. Supplementation with fibre improves product digestibility "in vitro". We have used mathematical modelling, linear, flat, and spatial estimation models developed in a radial scheme, polygon, and polyhedron to optimize the content of essential amino acids. We have developed a new recipe for the composition of cooked sausage with wheat fibre and pumpkin pectin with the optimal proportion of main ingredients: beef grade I – 30%, fatty pork – 50%, WFwPP – 5%, water. Compared to the control sample, the finished product's organoleptic characteristics improved. The basis of the mathematical model for assessing the quality of the developed cooked sausage with wheat fibre and pumpkin pectin was chosen flat model of the polygon, taking into account the time of preservation of product quality, which was assessed as a result of regression analysis. The quality assessment results of the developed products using a computer program for calculating the area of quality profiles with subsequent graphical visualization are consistent with the organoleptic studies, which confirms the reliability of the results and the adequacy of the developed mathematical model
Determination of the fatty and amino acid composition of camel milk, milk powder and shubat: Camel milk
Get PDFCamel milk is considered an essential source of nutrition and an effective remedy with healing properties in treating several diseases. Shubat, a fermented drink made from camel milk, contains easily digestible proteins, determining its nutritional value. Meanwhile, few studies have analysed the fatty and amino acid composition of Bactrian camel milk, milk powder and shubat in Kazakhstan. In this paper, we used the gas chromatography-mass spectrometry method to determine milk the fatty and amino acid composition of Kazakhstan camel milk and camel milk powder and submit samples. As a result, significant differences in the fatty acid and amino acid compositions were observed among samples of raw milk, milk powder and shubat. differences were found in all amino acids. The most representative fatty acids in the three groups were С16:0, С18:0, С18:1n9c, С14:0 FAs. In camel milk samples, among indispensable amino acids, lysine (29.64%) was the highest in concentration, followed by methionine (25.68%). Some polyunsaturated fatty acids (PUFAs) such as С18:3n3c, С20:4n6, С18:3n3c, С20:3n3c 8,11,14 were found only in shubat samples. Furthermore, we revealed a significant decrease in both dispensable (DAA) and indispensable (IDAA) contents in camel milk powder. Meanwhile, an increase in the quantitative content of amino acids has been observed in shubat, especially in threonine (166.86%), aspargine (156.34%), alanine (114.48%), etc. The results provide a theoretical basis for additional studies of camel milk composition of Bactrian camel in Kazakhstan
The study of physicochemical and technological properties of boiled sausage recommended for the older adults
Get PDFA recipe for cooked sausages of the herodietic direction using protein hydrolysate in the amount of 3%, 5%, and 7% of the mass of raw materials is proposed. The recipe is based on "Beef Sausage". Organoleptic evaluation of the prototypes showed that when protein hydrolysate was added in an amount of 7%, a specific taste characteristic of by-products was present in the prototype. Based on the sensory evaluation results, it was decided to continue the study of samples with the addition of 3% and 5% protein hydrolysate. The results of the study of the physicochemical parameters of the prototypes with the addition of protein hydrolysate 3% and 5%, showed the values of the mass fraction of protein 16.65% and 19.29%, fat 9.85% and 12.25%, carbohydrates 2.85% and 3.07% respectively, indicating an increase in the amount of protein and a decrease in the proportion of fat compared to the control sample. A significant increase in the content of such essential amino acids as lysine and valine and interchangeable amino acids as arginine, glycine, and serine in the test samples confirms that the protein hydrolysate introduced into the prototype is rich and well-balanced in amino acid composition. To study the effect of protein hydrolysate on the quality of meat products, the moisture binding capacity was determined, which was 3% and 5% in the experimental samples with the addition of protein hydrolysate – 75.62% and 79.13%, which is 3.4% and 8.2% higher than that of the control sample, respectively. The sample with the addition of 5% hydrolysate (80.01) has the greatest moisture-retaining ability, which is 9% higher than that of the sample with 3% hydrolysate and 15.8% higher than the control indicator. The study results of the fat-holding capacity in the samples also showed positive dynamics
Income optimization of rice paddy farmers in the narrow fields during the covid-19 pandemic in South Sumatra province
Get PDFThis study aims to analyze the amount of income through business diversification as well as scenarios for increasing income in business diversification during the Covid-19 pandemic. The research method used is the survey method, the sampling method used is a snowball and the number of respondents is determined by purposive sampling with 100 respondents. The study results show that the amount of optimization of the income of lowland rice farmers during the Covid-19 pandemic at a business diversification of 1 Rp. 29,130,500.00, business diversification 2 Rp. 19,007,006.29, business diversification 3 Rp. 8,301,257.48, business diversification 4 Rp. 14,877,500.00. The amount of farmer's income after the scenarios for business diversification 1 is carried out with additional capital of Rp. 1,870,000 so that the optimal allocation result will be an increase in income of Rp. 2,871,644.88 or 9.86%. Business diversification 2 is carried out with additional capital of Rp. 750,000 and a reduction of the workforce by 5 JOK so that the optimal allocation result will be an increase in income of Rp. 1,472,001.57 or 7.74%. Business diversification 3, it is carried out with additional capital of Rp. 370,000 and the addition of 4 JOK workers so that the optimal allocation result will be an increase in income of Rp. 978,173.65 or 11.78%. Business diversification 4 is carried out by increasing the land area by 0.25 so that it becomes 1 hectare and increasing capital by Rp. 500,000 so that the optimal allocation of income increases by Rp. 733,061.37 or 4.93
The variability of acrylamide content in potato French fries depending on the oil used and deep-frying conditions
Get PDFThe research aimed to investigate the variability of the acrylamide content in French potato fries depending on the type of oil and the length and conditions of deep-frying. Deep-frozen pre-fried potato French fries primarily intended for catering establishments were deep-fried parallel in two oils (multi-component oil and rapeseed oil) at the same conditions (175 °C/4 min and 200 °C/3 min) until the limit for total polar compounds (TPCs) content (24%) was reached. The samples were analysed immediately after removal from the package, after the first frying and when the TPCs was exceeded. High-performance liquid chromatography/electrospray ionization tandem mass spectrometry (HPLC/ESI-MS/MS) was used to determine acrylamide. Mathematical and statistical evaluation of the results was according to the indicators of descriptive characteristics, i.e., arithmetic mean, standard deviation (SD), and coefficient of variation (%). Analysis of variance (ANOVA) was used to compare groups, i.e., the assumption of agreement of variance was verified by the F test (F). All pairwise differences in means were tested using Tukey's HSD test (Honest Significantly Different) and Scheffe´s test. The critical value of α, compared to the standardized difference between the means, was established using our chosen risk of 5%. The highest acrylamide values were measured in samples deep-fried in rapeseed oil at 200 °C/3 min in sample 2b (451.13 µg/kg when deep-fried immediately) and in sample 2d (383.24 µg/kg after exceeding TPCs). The lowest values of acrylamide were found in samples deep-fried in multi-component oil at a temperature of 200 °C/3 min in sample 1d (183.35 µg/kg after exceeding TPCs) and at a temperature of 175 °C/4 min in sample 1c (240.75 µg/kg after exceeding TPCs). The decreased tendency of acrylamide in both types of oils and variants of temperature after exceeding TPCs compared to the state immediately after frying is confirmed for all samples. Potato-based products are a significant source of acrylamide production and subsequent consumption. Monitoring its presence in food is, therefore, an important legislative requirement
The intensification of dehydration process of pectin-containing raw materials
Get PDFThe process of intensifying dehydration of pectin-containing raw materials by using centrifugation with simultaneous application of low-frequency oscillations to the working container creates an electroosmotic effect in unilateral diffusion to improve the filtration process. It is established that to reduce the technological resistance in the presented methods; it is necessary to create a fluidized bed of products due to the oscillating motion of the working capacity. An experimental vibration unit has been developed to determine the rational parameters of the vibrocentric moisture removal process using the electroosmotic effect. It is proved that the complex of the designed equipment provides consecutive carrying out of three-stage vibration filtration-convective drying of high-moisture production by an alternation of action of a stream of the heat carrier, an electromagnetic field, low-frequency fluctuations. According to the research results, the dependences of the kinetics of the moisture diffusion process on the electric field strength are obtained; frequency of electric current and duty cycle of pulses, which allowed to optimize the process parameters according to the criteria of minimizing energy consumption. It was found that the processing time to achieve the desired humidity with the application of vibration, filtration, and electroosmotic effect was twice less than for filtration drying in a fixed bed. In combination with the noted physical and mechanical factors, the proposed technology improves the technical and economic parameters of the studied process
Social responsibility in reducing food losses and waste in the Slovak Republic: the role of policies – the responsibility of all
Get PDFThe study aimed to point out the calls of the European Commission to the social responsibility of the solution of food losses and waste, to evaluate the current state of the researched issues in the Slovak Republic, to point out the trends, and propose measures to improve the situation of the food losses and waste on the poultry meat market in the Slovak Republic. The scientific hypotheses were established. A questionnaire survey was used to obtain primary data. The research object was households and agricultural enterprises of broiler chicken farming (poultry farms) in the Slovak Republic. Data from questionnaires completed by households and poultry farms were examined and processed by the sorting method. Cumulative totals, intervals, and percentage ranges were calculated in each response class. The obtained data for individual objects of research were processed by sorting using Microsoft Word tables – Excel, Office 2016. The chi-square test (χ2 test) with a contingency table according to the procedure of Social Science Statistics was chosen for hypothesis testing. The SAS program was used for statistical evaluation of the results and answers of the respondents from the questionnaires. The research shows that food losses in Slovak households were up to 40% and on poultry farms at 6.8%. Mould and rot were the most common causes of food degradation. Mortality during breed has been recorded as a cause of food waste in poultry farms. A statistically significant difference (p ≤0.001) was found in the quantity of food losses between gross household income per family member and month. Statistically, no significant difference (p ˃0.05) was found between the numbers of family members. The proposals were recommended to improve the solution of reducing food losses and food waste in households and poultry farms. Based on the application of a practical approach of households and poultry farms to reduce food losses and support innovative solutions, it is possible to achieve gentle practices in ensuring the security of nutrition, food production, social and economic sustainability as well as environmental protection in the Slovak Republic
Factorial analysis of taste quality and technological properties of cherry fruits depending on weather factors
Get PDFThe results of researching the fund formation of dry soluble substances, sugars, and titrated acids in cherry fruits of 10 studied varieties under the Southern Steppe Subzone of Ukraine are given. According to the content of biochemical quality indicators, the following varieties were selected: Modnytsya (the content of dry soluble substances is 17.1%), Ozhidaniye (the content of sugars is 11.7%), and Solidarnost (the content of titrated acids is 1.79%). The cherry fruits units. By conducting a two-factor dispersion analysis, the feasibility of forecasting the content of the principal components of the chemical composition (dry soluble substances, sugars, titrated acids) in the cherry fruits was determined by average values and a factor that maximally impacts the accumulation of the studied indicators was identified during the studies. The dominant influence of weather conditions during research years was determined. Therefore, the taste qualities of the cherry fruits were proposed to forecast by average varietal value. The average and strong correlation dependences of influencing 19 weather factors on the content of the studied biochemical indicators in the cherry fruits were determined. The accumulation dependence models of dry soluble substances, sugars, and titrated acids were built based on the principal component and least-squares methods. The first-rank weather indicators with the maximum influence particles were identified for the studied biochemical quality indicators. The average monthly air temperature in June maximally impacted the fund accumulation of dry soluble substances in the cherry fruits (delta = 9.9%), the content of sugars - the average monthly precipitation in June (delta = 8.5%), on the content of titrated acids - the total number of precipitation days in June (delta = 18.62%). At the end of the flowering phase before fruit ripening and in the last month of fruit formation, humidity indicators had the greatest influence on the accumulation of the studied biochemical indicators in the cherry fruits (June).of Melitopol purpura and Modnytsya have maximum indicators of the sugar-acid index in the range of 8.9-9.3 relativ
Manifestation of living and post-slaughter traits of productivity in inbred and outbred bull calves of Ukrainian meat cattle breed
Get PDFSelection in meat cattle herds requires caution due to the manifestation of inbred depression in traits that affect the economics of this livestock industry. This paper analyses the productivity of inbred and outbred bull calves of the Ukrainian meat cattle breed and justifies methods of pair selection in purebred herds with natural pairing. In bull calves, the growth of animals and traits of their meat productivity after slaughter were considered. Inbreeding was determined based on their pedigree. Inbred animals tended to have a growth rate of 10.2% from birth to 8 months of age. Afterwards, their average daily gain in live weight decreases sharply compared to outbred peers, who grow faster over a more extended period. From 8 to 18 months of age, it is probably (p >0.95) higher by 27.3% compared to inbred animals. Inbred bull calves have higher variability (Cv,%) in average daily gains. This indicates different adaptations to the environment during the suckling period and after weaning. Outbred animals tend to gain 2.3% of body weight at 12 months, 4.7 at 15 months, and 10.3% at 18 months. Its variability with age decreases by 7.4 points in inbred bull calves and 0.4 points in outbred ones, from 8 to 18 months. The inbred animals spent 29.5% more feed per kg of gain (p >0.95) than the outbred ones. Inbred bull calves vs outbred ones at 15 and 18 months of age tend to improve the expression of meat forms by 1.3 and 2.7%. They are relatively shorter and have a more rounded barrel. As a result, they have a shorter period of rapid growth. With the small size of the Ukrainian meat cattle population, one of the most important problems is reducing genetic variation in beef productivity traits and manifesting inbred depression in them. In purebred commercial herds, the mating of close animals should be avoided. To do this, an "order" for bulls should be made, and pairs should be selected without using inbreeding at different grades. Thus, outbred bull calves will reach live weight more quickly, spending less feed per growth unit, and have better basic slaughter traits