scholarly journals DEVELOPMENT OF TECHNOLOGY FOR PRODUCING FOOD SWEETENERS FROM STEVIA AND THEIR IMMUNOMODULATING EFFECT

2021 ◽  
pp. 62-65
Keyword(s):  
Stevia Rebaudiana ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Alcoholic Extract ◽  
Rebaudioside A ◽  
Immunomodulating Effect ◽  
Stevia Rebaudiana Bertoni ◽  
Pharmacological Studies ◽  
The Individual ◽  
Active Substances

The aim of the study is to develop a technology for the production of food sweetener from stevia (Stevia rebaudiana Bertoni) - a plant of the Asteraceae (Compositae) family, cultivated in Uzbekistan using alcohol extracts. Diterpene glycosides were isolated from the extract - stevioside (1), rebaudioside A (2) and other biologically active substances. Pharmacological studies in mice have shown the presence of an immunostimulating effect in the alcoholic extract and in the individual diterpene glycoside, stevioside (1).

scholarly journals Immobilization of Daurian Rosehip Antioxidants by Protein-Lipid Inclusion

2021 ◽  
Vol 51 (2) ◽  
pp. 301-311
Author(s):  
Bayana Bazhenova ◽  
Anastasia Burkhanova ◽  
Yuliya Zabalueva ◽  
Roman Dobretsky
Keyword(s):  
Antioxidant Properties ◽  
Meat Products ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Alcoholic Extract ◽  
Lipid Inclusion ◽  
Optimal Method ◽  
Destructive Effect ◽  
Lipid Complex ◽  
Active Substances

Introduction. Antioxidant system is one of the main cellular mechanisms of adaptation. It is able to neutralize the destructive effect of free radicals, both external and internal. Functional products, especially of meat origin, can provide necessary antioxidant properties. Some types of plant raw materials possess a high content of polyphenol complexes with antioxidant properties. Therefore, introduction of phytonutrients into the composition of meat products can help to expand the range of foods with an antioxidant effect. Daurian rosehip is rich in biologically active substances and can increase their safety during processing. The research objective was to study the possibility of immobilization of Daurian rosehip antioxidants by protein-lipid inclusion. Study objects and methods. The research featured fruits of Daurian rosehip, its aqueous alcoholic extract, and protein-lipid complex. Results and discussion. The article presents experimental data on the chemical composition of Daurian rosehip. The optimal method with the best antioxidant results was a microwave phytoextraction by an aqueous alcoholic solution at a power of 800 W for 6–7 min. The antioxidants were immobilized by including the protein-lipid complex into the gel. The experiment demonstrated excellent functional and technological characteristics of the resulting system. Conclusion. The research revealed the optimal modes of microwave extraction of biologically active substances of Daurian rosehip. The rosehip extract was included into the protein-lipid complex and immobilized antioxidants, thus increasing their efficiency.

scholarly journals JELLY FOOD CONCENTRATE WITH ENCAPSULATED HIBISCUS EXTRACT

2021 ◽  
Vol 40 (4) ◽  
pp. 122-132
Author(s):  
HRABOVSKA Olena ◽  
VITRIAK Oksana ◽  
AVRAMENKO Alina
Keyword(s):  
Heat Treatment ◽  
Nutritional Value ◽  
Potato Starch ◽  
Experimental Studies ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Alcoholic Extract ◽  
Alcohol Mixture ◽  
Active Substances ◽  
Water Alcohol

Background. Taking into consideration the intense rhythm of life, the development of technologies for instant food products of increased nutritional value is urgent. Typically, food concentrates for desserts include fruit or fruit and berry fillings and require cooking to prepare ready-made meals. In this case, heat treatment of the mixture (boiling) negatively affects the thermolabile biologically active compounds. The aim of the work was to develop a recipe for instant food jelly concentrates of increased nutritional value based on encapsulated powdery hibiscus extract. Materials and methods. To encapsulate the aqueous-alcoholic extract of hibiscus and obtain a powdered semi-finished product, swelling potato starch was used. Rheological studies were carried out using a "REOTEST-2" rotational viscometer. Results. In order to enrich food concentrates of instant kissel with biologically active substances, we studied a method for extracting dry hibiscus flowers with aqueous-alcoholic solutions of various concentrations. It was found that the extractivity and the transfer of polyphenolic compounds, including anthocyanins, to the extract are improved when a water-alcohol mixture with an ethyl alcohol concentration of 30 % is used as an extractant. For the preparation of a powdery hibiscus extract, modified swelling starch was used, which has the property of swelling in cold water, which makes it possible not to subject the mixture to prolonged heat treatment for preparing a ready-made dish and to preserve the biologically active substances of the hibiscus extract. In addition, this starch is an effective solid carrier that plays a protective role for thermolabile vitamins and bioflavonoids. On the basis of experimental studies, formulations of instant jelly have been developed, which include fructose, powdered hibiscus extract, apple pectin and ascorbic acid. The study of the rheological properties of semi-finished products based on hibiscus extract, as well as ready-made jelly, testifies to the receipt of a finished dessert with a delicate creamy consistency. Conclusion. A method for obtaining a powdery encapsulated hibiscus extract based on swelling potato starch and a composition of a food jelly concentrate using this semi-finished product have been developed. It was found that for the extraction of raw materials it is better to use a water-alcohol mixture with an ethanol content of 30 %, since most of the anthocyanins are converted into the extract under these conditions. The developed semi-finished product of dry hibiscus extract can be used as a thickener, acidifier and colorant in recipes for food concentrates for instant dessert dishes. Due to the use of swelling starch, food concentrates of jelly do not need to be boiled, and the presence of vitamins, organic acids, flavonoids and especially anthocyanins in the hibiscus extract increases the nutritional value of the finished product.

scholarly journals PRODUCTION AND PROPERTIES OF DRY EXTRACTS OF BLACK CURRANE LEAVES

2018 ◽  
pp. 169-174
Author(s):  
Светлана (Svetlana) Николаевна (Nikolaevna) Петрова (Petrova) ◽  
Анастасия (Аnastasiya) Дмитриевна (Dmitrievna) Кантан (Kantan) ◽  
Юлия (Yuliya) Валерьевна (Valer'evna) Яргунова (Yargunova)
Keyword(s):  
Chemical Structure ◽  
Antioxidant Properties ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Alcoholic Extract ◽  
Successive Treatment ◽  
Black Currant ◽  
Inhibitory Ability ◽  
Enzymatic Systems ◽  
Active Substances

Black currant being a widespread Russian culture is of interest as a source of biologically active substances due to its easy accessibility and renewability. Both berries and its leaves contain biologically active substances capable of exhibiting antioxidant properties, the chemical structure of which is accessible to the enzymatic systems of the human body. The paper presents the results of the investigation of the composition and properties of thick extracts obtained from black currant leaves with successive treatment of plant material with a number of organic solvents (hexane, acetone, 70% ethanol) in order of increasing their polarity, followed by distillation of the extractants. In the obtained extracts, biologically active substances such as flavonoids, chlorophylls and carotenoids are quantitatively determined. According to the content of chlorophylls and carotenoids, acetone extract is the leader and alcoholic extract is the leader in the content of flavonoids. The extract obtained with the use of acetone, contains the greatest total amount of biologically active substances. An evaluation of the antioxidant activity of the extracts was carried out using oxidation of adrenaline by air oxygen as a model reaction. It is shown that the rate of its oxidation decreases 3 to 5 times in the presence of extracts of the leaves of black currant. Acetone thick extract shows the greatest inhibitory ability.

scholarly journals Use of biologically active substances in hops

2018 ◽  
Vol 64 (No. 12) ◽  
pp. 626-632 ◽  
Author(s):  
Pavel Procházka ◽  
Přemysl Štranc ◽  
Kateřina Pazderů ◽  
Jan Vostřel ◽  
Jan Řehoř
Keyword(s):  
Chlorophyll Content ◽  
Humic Acids ◽  
Untreated Control ◽  
Fulvic Acids ◽  
Ascophyllum Nodosum ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Bitter Acids ◽  
The Individual ◽  
Active Substances

In four-year experiments, hop was treated with 7 biologically active substances in two terms during vegetation: Lignohumate max (a mixture of humic acids and fulvic acids), Lexin (a mixture of humic acids and fulvic acids enriched with auxins), Lexenzym (a mixture of humic acids and fulvic acids enriched with auxins, phytohormones and enzymes precursors), Ascophyllum nodosum seaweed extract, synthetic auxin, humic acids and fulvic acids alone. The chlorophyll content was monitored after the application both in the vine leaves and in the branch leaves. After harvesting of the hops from the individual treatments, the yield of dry hops was determined and the cones were analysed for the content of alpha bitter acids. The results show that the most effective hop treatment was the application of Lexin and Lexenzym. The Lexenzym treatment provided a yield of dry hops of 1.86 t/ha, i.e. 0.47 t/ha higher compared with untreated control. The Lexin treatment provided yield higher by 0.41 t/ha of dry hops compared with the untreated control, while the harvested cones contained the most alpha-bitter acids (4.57%).

scholarly journals EFFECTS OF BIOLOGICALLY ACTIVE SUBSTANCES USED IN SOYBEAN SEED TREATMENT ON OIL, PROTEIN AND FIBRE CONTENT OF HARVESTED SEEDS

2017 ◽  
Vol 7 (4) ◽  
pp. 1178-1184
Author(s):  
Pavel Prochzka ◽  
Premysl TRANC ◽  
Katerina PAZDER ◽  
Jaroslav Å TRANC ◽  
Jan VOSTŘEL
Keyword(s):  
Humic Acids ◽  
Seed Treatment ◽  
Soybean Seed ◽  
Fulvic Acids ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Synthetic Analog ◽  
Soybean Seeds ◽  
The Individual ◽  
Active Substances

In 4-year trials, soybean seeds were treated with biologically active substances: Lignohumate B (a mixture of humic acids and fulvic acids), Lexin (a mixture of humic acids and fulvic acids enriched with auxins), brassinosteroid (a synthetic analog of natural epibrassinolide 24) and so-called “Complex seed treatment” (a mixture of a saturated solution of sucrose, Lexin, the fungicide Maxim XL 035 FS and adjuvant on the base of pinolene). After harvesting soybean seeds from the individual variants, they were analyzed for oil, protein and fibre contents. The results show that the most effective method was Complex seed treatment” which, compared to the untreated variant, significantly increased not only the yield but also the oil content of the seeds.

scholarly journals Effects of biologically active substances used in soybean seed treatment on oil, protein and fibre content of harvested seeds

2017 ◽  
Vol 63 (No. 12) ◽  
pp. 564-568 ◽  
Author(s):  
Procházka Pavel ◽  
Štranc Přemysl ◽  
Pazderů Kateřina ◽  
Štranc Jaroslav ◽  
Vostřel Jan
Keyword(s):  
Humic Acids ◽  
Seed Treatment ◽  
Soybean Seed ◽  
Fulvic Acids ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Soybean Seeds ◽  
Synthetic Analogue ◽  
The Individual ◽  
Active Substances

In 4-year trials, soybean seeds were treated with the following biologically active substances: Lignohumate B (a mixture of humic acids and fulvic acids); Lexin (a mixture of humic acids and fulvic acids enriched with auxins); brassinosteroid (a synthetic analogue of natural epibrassinolide 24) and so-called ‘Complex seed treatment’ (a mixture of a saturated solution of sucrose, Lexin, the fungicide Maxim XL 035 FS and an adjuvant on the basis of pinolene). After harvesting soybean seeds from the individual treatments, they were analysed for oil, protein and fibre contents. The results show that the most effective method was the ‘Complex seed treatment’ which, compared to the untreated variant, significantly increased not only the yield but also the oil content of the seeds.

Microscopic fungi of lithobiont communities of Argentine Islands Region: Data from the 22nd Ukrainian Antarctic Expedition

2020 ◽  
Vol 62 (1-2) ◽  
pp. 49-68
Author(s):  
T. O. Kondratiuk ◽  
T. V. Beregova ◽  
I. Yu. Parnikoza ◽  
S. Y. Kondratyuk ◽  
A. Thell
Keyword(s):  
Filamentous Fungi ◽  
Mucor Circinelloides ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Microscopic Fungi ◽  
Rhodotorula Rubra ◽  
Yeast Fungi ◽  
Antarctic Expedition ◽  
Geomyces Pannorum ◽  
Active Substances

The identification of the diversity of microscopic fungi of lithobiont communities of the Argentine Islands in specimens collected during the 22nd Ukrainian Antarctic Expedition was the purpose of this work. Samples of rock, soil, mosses and lichens of rock micro-habitats of “Crustose lichen sub-formation and fruticose lichen and moss cushion sub-formation” were used in the work. These samples were used for extracting and cultivation of filamentous fungi on dense nutrient media. Determination of physiological and biochemical characteristics and identification of yeast-like fungi were performed using a microbiological analyser ‘Vitek-2’ (‘Bio Merieux’, France). Cultivation of microorganisms was carried out at temperatures from +2 to +37 °C. In results cultures of microscopic fungi of Zygomycota (Mucor circinelloides), Ascomycota (species of the genera cf. Tlielebolus, Talaromyces), representatives of the Anamorphic fungi group (Geomyces pannorum, species of the genera Alternaria, Acremonium, Aspergillus, Penicillium, and Cladosporium) were isolated from Antarctic samples. Microscopic fungi Penicillium spp. were dominated after the frequency in the studied samples (54.5%). Rhodotorula rubra and Candida sp. among isolated yeast fungi, and dark pigmented fungi represented by Aureobasidium pulhdans and Exophiala spp. were identified. The biological properties of a number of isolated fungi (the potential ability to synthesise important biologically active substances: melanins, carotenoids, lipids) are characterised. Mycobiota of rock communities of Argentine Islands is rich on filamentous and yeast fungi similarly to other regions of Antarctica. A number of fungi investigated are potentially able to synthesise biologically active substances. The dark pigmented species of the genera Cladosporium, Exophiala, Aureobasidium pulhdans, capable of melanin synthesis; ‘red’ yeast Rhodotorula rubra (carotenoid producers and resistant to toxic metals); Mucor circinelloides and Geomyces pannorum, lipid producers, are among these fungi. Yeast-like fungi assimilated a wide range of carbohydrates, which will allow them to be further used for cultivation in laboratory and process conditions. The collection of technologically promising strains of microorganisms, part of the Culture Collection of Fungi at Taras Shevchenko National University of Kyiv (Ukraine), is updated with isolated species (strains) of filamentous fungi and yeast – potential producers of biologically active substances, obtained within this study.

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