Перегляд за Автор "Grek, Olena"

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Antioxidants' effect on the storage of dairy products with high-fat content
(2021) Grek, Olena; Pshenychna, Tetyana; Nikolaieva, Mariia
The article presents the research results of the antioxidants’ effect of various origins on the storage of dairy products with high-fat content. The quality change of such products was monitored by the oxidation product content. The antioxidants’ effect of natural origin and human-made origin on the change in the peroxide and acid numbers in spreads with food fibers during storage period for 15 and 30 days at a temperature of (20±2) ° C and (0...- 5) °C has been determined.
Change in quality indicators of curd mass based on protein-berry clots during storage period
(2021) Pshenychna, Tetyana; Grek, Olena; Shymanyuk, Illia
The change in the active acidity of the curd mass based on protein-berry clots for 72 hours at a temperature of (4±2) ˚С has been investigated. The research results showed that the active acidity of the curd mass directly depends on the quality indicators of the protein-berry clots, namely, the pH value of the berry coagulant and the amount of its introduction. In addition, the change in the moisture-retaining capacity of curd mass based on protein-berry clots for 72 hours at a temperature of (4±2) ˚С has been determined.
Craft production of albumin products from local dairy raw materials
(2023) Soloviov, Nikita; Tymchuk, Alla; Grek, Olena
Analyzing the current market for protein products, we can conclude that there has been a noticeable increase in the craft production of albumin products with various fillers, which indicates the relevance of this area for saving local dairy raw materials, as well as expanding the range, improving quality, increasing nutritional and biological value, and extending the shelf life of finished products. Аналізуючи сучасний ринок виробництва білкових продуктів, можна зробити висновок про помітне зростання крафтового виробництва альбумінних виробів з різними наповнювачами, що свідчить про актуальність цього напрямку для економії локальної молочної сировини, а також розширенню асортименту, поліпшенню якості, підвищенню харчової й біологічної цінності, подовженню термінів зберігання готових продуктів.
Determination methods of defrosted protein-vegetable mixtures parameters development
(2018) Tsygankov, Sergii; Ushkarenko, Viktor; Grek, Olena; Tymchuk, Alla; Popova, Inna; Chepel, Natalia; Onopriichuk, Olena; Savchenko, Alexander
Метою роботи було розроблення методів дослідження впливу крупи манної та екструдованої на якісні та кількісні показники сумішей з молочно-білковими концентратам в циклі заморожування – розморожування. Отримані результати досліджень вказують на ефективність запропонованих методів для визначення показників білково-рослинних сумішей після розморожування. Вимірювання кількісних показників можуть бути використані для ефективного корегуванню втрат маси концентратів. Ключові слова: продукти переробки зернових; розморожування; молочно-білкові суміші; кріоскопічна температура; колагенвмісний інгредієнт.
Determination methods of food fibers characteristics in milk mixtures with the modified fat composition
(2019) Grek, Olena; Tymchuk, Alla; Tsygankov, Sergii; Savchenko, Alexander; Ovsiienko, Kira; Ochkolyas, Olena
The main methods of determining the technological parameters of dietary fiber in milk mixtures of modified fat composition are presented in the article. Methods for investigating the ability of food fibers to moisture and fat absorption are proposed. The values characterizing the swelling parameters of the herbal ingredients in the experimental mixtures were obtained. The effectiveness of the IR spectroscopy method for the identification and comparison of moisture bond forms in mixtures of food fibers with water and oil was confirmed. The parameters of thermal stability and degree of leakage of liquid fat for mixtures of modified fat composition with maximum butter oil replacement by 25% of oil were obtained. The results of the studies indicate that there are objective possibilities for the effective use of Vicetal dietary fiber, to stabilize the structure and to prevent the appearance of defects in the consistency of products with modified fat composition.
Determination of amino acid composition and biological value in protein-berry concentrates
(2019) Grek, Olena; Pshenychna, Tetyana; Onopriichuk, Olena; Tymchuk, Alla
Research of the amino acid composition of proteins, including the content of free and fixed amino acids, and biological value in protein-berry concentrates, obtained by thermo acid coagulation are an actual direction. Proteins in concentrates have a full amino acid composition and contain all essential amino acids, the content of which from amounts are 41.97% and 43.96%, respectively, for protein-berry and milk-protein concentrates. The total content of amino acids in protein-berry concentrates increased by 20.18% compared to the control sample - through the active coagulating effect of organic acids blackcurrant paste. Актуальним є дослідження амінокислотного складу білків, у тому числі вмісту вільних і зв’язаних амінокислот та біологічної цінності в білково-ягідних згустках, отриманих термокислотним способом осадження. Встановлено, що білки згустків мають повноцінний амінокислотний склад і містять всі незамінні амінокислоти, вміст яких від загальної суми становить для білково-ягідних та молочно-білкових – 41,97 % та 43,96 % відповідно. Загальний вміст амінокислот в білково-ягідних згустках збільшився на 20,18 % порівняно з контролем – за рахунок активної коагулюючої дії органічних кислот чорносмородинової пасти.
Determination of biologically active substances in protein-berry concentrates
(2018) Grek, Olena; Onopriichuk, Olena; Pshenychna, Tetyana; Tymchuk, Alla
Досліджено поліфенольний склад і проаналізовано порівняно з контролем (пастою чорносмородиновою) та визначено ступінь переходу в концентрати білково-ягідні, що складає близько 55,31 % поліфенольних сполук, в тому числі антоціанів. Білки концентратів мають повноцінний амінокислотний склад і містять всі незамінні амінокислоти, вміст яких від загальної суми становить для білково-ягідних та молочно-білкових – 41,97 % та 43,96 % відповідно. В концентратах ідентифіковано 18 вільних та 16 зв’язаних амінокислот, із яких переважають глютамінова кислота, гістидин, метіонін, лейцин та пролін. Визначено замінні амінокислоти, вміст яких від суми загальних амінокислот в КБЯ та КМБ (контроль) становить 58,03 % та 56,04 %. Збільшується вміст НАК в концентратах білково-ягідних на 14,75 % та ЗАК на 24,45 % за наступними амінокислотами: треонін на 0,156 мг%, лізин на 0,21 мг%, триптофан на 0,221 мг%, фенілаланін – 0,525 мг% порівняно з контрольним зразком. The research results of polyphenol composition were analyzed compared with the control (blackcurrant paste) and the degree of their transition to protein-berry concentrates was determined, which is about 55.31 % of polyphenols, including anthocyanins. Proteins in concentrates have a full amino acid composition and contain all essential amino acids, the content of which from amount is 41.97 % and 43.96 %, respectively, for protein-berry and milk-protein. A quantitative content of 18 free amino acids and 16 bound amino acids has determined in protein-berry and milk-protein concentrates, of which glutamic acid, histidine, methionine, leucine and proline are dominated. The nonessential amino acids were determined, the content of which is 58.03 % and 56.04 % from the sum of total amino acids in the PBC and MPC (control). The content of essential amino acids in protein-berry concentrate has increased by 14.75 % and the nonessential amino acids by 24.45 % by the following amino acids: threonine at 0.156 mg%, lysine at 0.21 mg%, tryptophan at 0.221 mg%, phenylalanine at 0.525 mg% compared with the control sample.
Determination of moisture connection forms of protein-herbal clots
(2017) Grek, Olena; Onopriichuk, Olena; Tymchuk, Alla; Chubenko, Larysa
The interest is research by the moisture bonding forms in the modified milk-protein concentrates, especially, in protein-herbal clots which are obtained by thermo acid coagulation of milk proteins. The results are confirmed the expediency of adding rice extrudate to the protein-herbal clots for the free moisture binding which will provide steel quality indicators in protein-herbal clots.
Evaluation of the biochemical activity of lactose-fermenting yeast Kluyveromyces lactis for whey and apple pectin mixture fermentation
(2016) Chepel, Natalia; Grek, Olena; Krasulya, Olena
This study was carried out by using whey and apple pectin in the fiber mixture as a fermentative medium in order to evaluate the biochemical activity of lactose-fermenting of some Kluyveromyces lactis strains during fermentation.
Fatty acid composition of dairy fat products of vegetable origin
(2014) Grek, Olena; Krasulya, Olena; Savchenko, Alexander; Petrina, Alla
For enrichment of polyunsaturated fatty acids and increasing biological and nutritional value of dietary fiber of spreads it is offered to add sweet brier processing products (SPP) - oil and meal. The expediency and the use of these products is proved for producing of emulsive type dairy fat products of vegetable origin with dietary fiber as “Citri-Fi”.Materials and Methods. With the method of gas-liquid chromotography peak samples products of sweetbrier processing are identified. Found that received dairy fat products of vegetable origin of emulsive type contain more unsatured fatty acids than butter, which is included to the recipe of spreads. Results. Found that in the investigated spread the amount of saturated and unsaturated fatty acids are reduced (capric (by 1,136 %), lauric (at 1.958 %), myristic (by 3.03 %), palmitic (at 6.454 %), stearic (at 1,016 %), arachidonic (by 0,229 %) also the amount of trans-isomers that during the consuming of the product can cause cardiovascular disease (by 1,305 % compared with butter). The main ω-3 fatty acid in dairy fat products of vegetable origin with dietary fiber is linolenic, compared with butter its content increases by 0,038 %. Among the ω- 6 acids in samples linoleic dominates which increases by 0,458 %, linoleic cis-9, cis-12 C18: 2 – 15,282 %. From monounsaturated fatty acids in the spread of PSP the lower amount of such fatty acids as: mirystooleinic, palmooleinic, heptadecenoic, elaidonic but more oleic (by 1,831 %). The results can be used in determining the biological value of the PCA spreads due to current principles of nutrition science.
Fiber from thistle seeds in albumine product
(2023) Soloviov, Nikita; Tymchuk, Alla; Grek, Olena
The improvement of the assortment structure is facilitated by the introduction of progressive technological processes, the creation of new technologies using various types of non-traditional raw materials, which reduce the caloric content 184 and simultaneously increase the nutritional and biological value of dairy products. New principles of using plant ingredients can be implemented by creating functional mixtures, the use of which will allow to develop a wide range of albumin products, to ensure the stability of their technological properties during storage, to minimize the consumption of dairy raw materials, and to involve plant raw materials in the technological cycle of production.
Forecasting of qualitative indicators of albumin-vegetable mixtures during storage
(2014) Ivanov, Sergey; Grek, Olena; Onopriichuk, Olena; Krasulya, Olena
Mathematical models were received using the Rosenbrock’s function to forecast the qualitative indices ofalbumin-vegetable mixtures with apple pectin fiber (APF). The APF consists of extruded wheat mill run (60 %) and apple powder (40 %). Dietary fiber concentrates with polyfunctional properties were used to createalbumin-vegetable mixtures (AVM). The efficient use of resources and combined nutritive elements was takeninto consideration. The optimal quantity of apple pectin fiber in albumin mass constitutes 4 to 6 %. This quantity was determined organoleptically. The received samples had a homogenous, plastic consistency withAPF fractions. The taste and smell were characteristic of albumin mass with a slight flavor of apple pectinfiber. Practical application of the obtained mathematical models is forecasting changes of the indices ofalbumin-vegetable mixtures with time. The study findings can be used for the manufacture of combined foodsfrom vegetable components and by-products obtained during milk processing. It is a current trend in the dairyprocessing industry.
Identification of by-products of fermentation of whey and malt worts
(2013) Chepel, Natalia; Grek, Olena; Krasulya, Olena
Results of gas chromatographic studies for definition of by-products of fermentation of whey and malt worts enabled evaluate advantages Zygosaccharomyces lactis 868-K yeast race objectively. Presence of the given yeast race in nutritional medium has a positive effect on producer’s metabolism, thus stimulating biosynthesis or transformation of nutritional medium aromatic substances.
Improving the safety of production of dairy protein products from secondary dairy raw materials
(2021) Slobodyan, Olga; Grek, Olena; Ovsiienko, Kira
The work examines the main provisions on improving the safety of the production of protein products from secondary dairy raw materials; organization and implementation of measures to protect production personnel in case of emergencies. The stages of development of a possible accident and the procedure for an emergency stop of a dairy enterprise are presented. В роботі розглядається основні положення щодо підвищення безпеки виробництва білкових продуктів із вторинної молочної сировини; організація та здійснення заходів щодо захисту виробничого персоналу на випадок надзвичайних ситуацій. Представлено етапи розвитку можливої аварії та порядок аварійної зупинки молочного підприємства.
Influence of collagen-containing ingredient on thermocoagulation of protein of whey concentration
(2018) Grek, Olena; Tymchuk, Alla; Ovsiienko, Kira; Mykhalevych, Artur
It is relevant to improve the methods for extracting albumin proteins from milk whey and using them in various product technologies.
Influence of lactose fermentative yeast on fermented serum and malt drink parameters
(2013) Chepel, Natalia; Grek, Olena; Krasulya, Olena
Influence of different lactose fermentative yeast races (Zygosaccharomyces lactis 868-K, Saccharomyces lactis 95, Kluyveromyces lactis 469) on physical and chemical parameters of fermented wort in comparison with the standard ones was investigated. The results prove the highest fermentative activity of Zygosaccharomyces lactis 868-K yeast, in particular: ethyl alcohol content – 1.0 v. %, sodium hydroxide solution acidity with concentration of 1 mol/dm3 per 100 cm3 of drink – 3,5 cm3, drink stability at 20 C – 5 days. Physical and chemical parameters of wort fermented with Saccharomyces lactis 95 and Kluyveromyces lactis 469 yeast are considerable lower than the standard ones which points at rather low activity of ferments catalyzing lactose hydrolysis.
Influence of lactose fermentative yeast on fermented serum and malt drink parameters
(2013) Chepel, Natalia; Grek, Olena; Krasulya, Olena
Influence of different lactose fermentative yeast races (Zygosaccharomyces lactis 868-K, Saccharomyces lactis 95, Kluyveromyces lactis 469) on physical and chemical parameters of fermented wort in comparison with the standard ones was investigated. The results prove the highest fermentative activity of Zygosaccharomyces lactis 868-K yeast, in particular: ethyl alcohol content – 1.0 v. %, sodium hydroxide solution acidity with concentration of 1 mol/dm3 per 100 cm3 of drink – 3,5 cm3, drink stability at 20 °C – 5 days. Physical and chemical parameters of wort fermented with Saccharomyces lactis 95 and Kluyveromyces lactis 469 yeast are considerable lower than the standard ones which points at rather low activity of ferments catalyzing lactose hydrolysis.
Methods for determining the characterization of mashes with fiber for semi-finished products on the milk-protein base
(2019) Grek, Olena; Tymchuk, Alla; Tsygankov, Sergii; Onopriichuk, Olena; Savchenko, Alexander; Ochkolyas, Olena
The aim of the work is to develop effective methods that characterize the mixing of semi-finished products with potato fiber after heat treatment, to avoid excessive compaction of products and stabilization of qualimetric parameters. The article presents the main methods for determining the characteristics of mixtures with potato fiber for heat-treated semi-finished products.
Methods of determination of parameters of fermented whey-malty mixtures
(2018) Tsygankov, Sergii; Ushkarenko, Viktor; Grek, Olena; Krasulya, Olena; Ushkarenko, Iuliia; Tymchuk, Alla; Onopriichuk, Olena; Savchenko, Alexander
The methods of accumulation of yeast cells Kluyveromyces lactis 469 and their percent with glycogen from the general concentration at fermentation of wort of the restored mixture at different ratios of dry malt and whey are offered and results are obtained. According to the obtained data, it was established, that yeast cells actively developed in the period from 4 to 16 fermentation hour at the ratio of malt and whey in the restored mixture as 1:1,5 and 1:2. The increment of cells with glycogen in mixtures with the ratio – malt:whey as 1,5:1 and 2:1 was intensive. Thus, at 36 hour of fermentation the amount of yeast was 67,2 and 68,9 % respectively from the total number of cells.
Methods of determination of parameters of Whey with food fibers
(2018) Tsygankov, Sergii; Grek, Olena; Krasulya, Olena; Onopriichuk, Olena; Chubenko, Larysa; Savchenko, Alexander; Snizhko, Olha; Ochkolyas, Olena
The article presents fixation methods of parameters of whey with food fibers for fermentation with lacto-fermentative Zygosaccharomyces lactis 868-K yeast for getting a non-alcoholic fermented beverage.