Перегляд за Автор "Usatyuk, Svitlana"
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Документ Chlorophyll content and antioxidant activity of sunflower oil with aromatic raw materials(2014) Usatyuk, Svitlana; Pelekhova, LyubovThe article presents the results of the study on chlorophyll content and antioxidant activity of sunflower oil with aromatic raw materials. Dried parsley and basil were used as aromatic raw materials. Dried basil and parsley were in the amount of 2 to 10 %. The chlorophyll content was quantified by the photometric method. Determination of the AOA was carried out by the Flourescence Recovery after Photobleaching (FRAP) method.Документ Comparative study of walnut and pumpkin seeds oils biological value and oxidative stability(2019) Nosenko, Tamara; Korolyuk, Tamara; Usatyuk, Svitlana; Vovk, Hanna O.; Kostinova, TetianaThe work is devoted to the study of the biologically active components content and the oxidation stability of oils from non-traditional raw materials such as walnuts and pumpkin seeds. The content of phospholipids, carotenoides, chlorophylls, tocopherols and sterols as well as fatty acids and tocopherol homologues composition, acidity and oxidation stability of walnut and pumpkin seeds oils were determined. The walnut and pumpkin oils contain a significant amount of polyunsaturated fatty acids, in particular, the walnut oil contains linolenic acid and has close to the recommended ratio of ω-3: ω-6 polyunsaturated fatty acids. The linoleic (polyunsaturated, ω-6) and oleic (monounsaturated) fatty acids were dominated in fatty acids composition of pumpkin oil, the sum of saturated fatty acids was three times higher than in walnut oil. The important property of walnut oil is very high ratio of ω-3:ω-6 polyunsaturated fatty acids, that was 1:5 almost the same as recommended by dietologists for human diet. The difference of total tocopherols content of two oil samples was slight, but tocopherol homologues composition was very distinctive, that is the β-tocopherol was the main in the walnut oil and α-tocopherol − in the pumpkin seeds oil, respectively. Acidity of investigated samples of oils have increased sufficiently fast, reaching the value close to 4 mg KOH/g of oil during the 63 and 70 days for walnut and pumpkin seeds oils, respectively. Oxidative stability of two oil samples were estimated as peroxide value changes during 98 days of oil storage. It was shown that the induction period of walnut oil oxidation, measured as peroxide value increase initiation, was 56 days, inspite of high content of polyunsaturated fatty acid content and particularly linolenic acid in this oil. Duration of induction period of pumpkin seeds oil oxidation and shelf life were 70 and 98 days, respectively, while shelf life of walnut oil was about 90 days. The higher resistance of pumpkin oil to oxidative damage is primarily due to the fatty acid composition of this oil, namely to the high content of saturated and monounsaturated fatty acids and almost twice lower content of polyunsaturated fatty acids compared to the walnut oil. Both oils can be recomended as a valuable source of polyunsaturated fatty acids, antioxidants and vitamins for human nutrition.Документ Development of HACCP system for production of natural dry red wine(2016) Usatyuk, Svitlana; Tyshchenko (Usatiuk), Olena; Klymash, NataliiaThe development of the HACCP system for the production of natural dry red wine is considered.Документ Effects of bamboo dietary fibre on meat semi-finished products(2016) Rudyk, Viktor; Tyshchenko (Usatiuk), Olena; Usatyuk, SvitlanaThe effects of bamboo fiber as a prospective fortificant of plant origin on the quality of meat semi-finished products were investigated.Документ Health benefits of almond milk(2015) Savchuk, Yurii; Usatyuk, Svitlana; Smirnova, ElizabethДокумент Legislation on food additives in the EU and Ukraine(2013) Usatyuk, Svitlana; Ivanov, SergeyThe paper is devoted to legislation on food additives in the EU and Ukraine.Документ Methods of detection of olive oil adulteration(2013) Zadkova, Alexandra; Usatyuk, Svitlana; Korolyuk, TamaraShows the modern methods of detection of olive oil adulteration.Документ Pumpkin seed pre-treatment prior to cold pressing to enhance oil extraction efficiency(2013) Derbygova, Galina; Smirnova, Elizabeth; Mank, Valeriy; Usatyuk, SvitlanaДокумент Research of total antioxidant activity of vegetable oils(2013) Usatyuk, Svitlana; Pelekhova, LyubovThe paper is devoted to research of total antioxidant activity of vegetable oils. Робота присвячена дослідженню загальної антиоксидантної активності рослинних олій.Документ Study of the effect of electromagnetic field and radiation on the intensification of brewing processes(2021) Sidor, Vasyl; Usatyuk, Svitlana; Tyshchenko (Usatiuk), Olena; Baranovska, IrynaThe object of research is the enzymatic preparations Termamil and San-Super, malt and yeast. One of the most problematic places is that the action of the magnetic field and radiation can both stimulate the amylase activity of barley malt and cause its deactivation. During the study, a certain number of electrophysical factors were used, namely: laser radiation, which was carried out using a helium-neon laser, ultraviolet radiation – using a nitrogen gas laser, X-rays, a constant uniform magnetic field, ultrasound. Results have been obtained that confirm the positive effect of the magnetic field on the activation of the amyloletic activity of concentrated preparations. A study was also conducted in accordance with the effect of electromagnetic waves on the activation of enzymes in barley and wheat malt, which showed a positive effect. This is ensured by the fact that in the course of the study, thanks to experiments, the best duration of irradiation with electromagnetic waves and different types of radiation for enzyme preparations, malt and yeast was found. These methods have a number of features. This is the availability of the appropriate equipment and knowledge of the individual types of rays, magnetic fields and electromagnetic waves, and their potential effects on enzymes, as well as control of the exposure time and magnetic field load. Due to the action of electromagnetic waves and radiation, for a certain amount of time, it is possible to obtain an increased activity of enzymatic preparations. Compared to the fermentative preparations Termamil and San- Super, malt and yeast, which are not susceptible to the load of magnetic fields, electromagnetic waves and various types of radiation, the fermentative preparations Termamil and San-Super, malt and yeast, which were susceptible to the action of electromagnetic waves, as well as radiation show increased activity of action. At the same time, these preparations reduce the amount of costs and increase the yield of finished products, which will serve as a positive aspect for the economic sphere of the enterprise. Об’єктом дослідження є ферментні препарати Термаміл та Сан-Супер, солод та дріжджі. Один з найбільш Проблемними місцями є те, що як дія магнітного поля, так і радіація можуть стимулювати активність амілази ячмінного солоду та викликають його дезактивацію. Під час дослідження було використано певну кількість електрофізичних факторів, а саме: лазерне випромінювання, яке було здійснюється за допомогою гелій-неонового лазера, ультрафіолетового випромінювання – за допомогою азотного лазера, рентгенівського випромінювання, постійного рівномірного магнітне поле, ультразвук. Отримано результати, які підтверджують позитивний вплив магнітного поля на активацію амілолетична активність концентрованих препаратів. Також було проведено дослідження щодо ефекту електромагнітних хвиль на активацію ферментів ячмінного та пшеничного солоду, що показало позитивний ефект. Це забезпечується тим, що в ході дослідження, завдяки експериментам, найкраща тривалість опромінення з електромагнітними хвилями та різними видами випромінювання для ферментних препаратів, солоду та дріжджів. Ці способи мають ряд особливостей. Це наявність відповідного обладнання та знання окремі типи променів, магнітних полів і електромагнітних хвиль, а також їх потенційний вплив на ферменти, а також контроль часу експозиції та навантаження магнітного поля. Завдяки дії електромагнітних хвиль і випромінювання протягом певного часу можна отримати підвищена активність ферментативних препаратів. Порівняно з ферментними препаратами Термаміл і Сан- Супер, солод і дріжджі, які не сприйнятливі до навантаження магнітних полів, електромагнітних хвиль і різного роду види радіації, ферментаційні препарати Термаміл і Сан-Супер, солод і дріжджі, які були чутливі до дії електромагнітних хвиль, а також випромінювання виявляють підвищену активність дії. В той самий час, ці препарати зменшують суму витрат і збільшують вихід готової продукції, яка буде служити позитивний аспект для економічної сфери підприємства.Документ Walnut uhf-treatment influence on oil lipid fraction fatty acid composition(2012) Derbygova, Galina; Usatyuk, Svitlana; Korolyuk, TamaraThe paper presents the investigation results of the microwave processing influence on lipid fraction fatty acid composition of walnut oil.