“Green technology” processing of pine (Pinus sylvestris L.) and larch (Larix sibirica Ledeb.) wood greenery to produce bioactive extracts

Holzforschung ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Natalya N. Nikonova ◽  
Tatyana V. Hurshkainen ◽  
Oksana G. Shevchenko ◽  
Alexander V. Kuchin
Keyword(s):  
Fractional Composition ◽  
Green Technology ◽  
Biologically Active ◽  
High Biological Activity ◽  
Larch Wood ◽  
Extractive Substances ◽  
High Antioxidant Activity ◽  
Method Of Extraction ◽  
Acidic Components ◽  
Environmentally Friendly Method

Abstract In order to explore the extractives of conifers an effective and environmentally friendly method of extraction with aqueous-alkaline solution allowing to isolate up to 10.4% of extractive substances (ES) from pine wood greenery and up to 6.9% from larch wood greenery was investigated. The component fractional composition of aqueous-alkaline extracts was studied. The antioxidant fraction activity of neutral and acidic components isolated from the produced extracts was evaluated. It was found that these fractions have a high antioxidant activity, where the activity of larch extract components was higher than that of the respective components of pine extract. Due to their rich chemical composition and high biological activity, extracts of pine and larch wood greenery produced by aqueous-alkaline extraction have good application prospects as biologically active preparations.

scholarly journals Synthesis and physicochemical research of some 2-((5-((theophylline-7'-yl)methyl)-4-R-4H-1,2,4-triazole-3-yl)thio)acetohydrazide ylidenderivatives

2018 ◽  
pp. 50-54
Author(s):  
A. S. Gotsulya ◽  
P. S. Knyazevich ◽  
O. I. Panasenko ◽  
Е. G. Knysh
Keyword(s):  
Rapid Development ◽  
Biologically Active ◽  
High Biological Activity ◽  
Crystalline Materials ◽  
Alcoholic Medium ◽  
Chain Reactions ◽  
Light Yellow ◽  
Starting Compound ◽  
Active Substances ◽  
Tuberculosis Activity

The rapid development pace of the pharmaceutical science constantly increases the demand for new kind of medicine featured with high biological activity and non-toxicity at the same time. Setting the aim to enlarge the amount of scientific findings in the domain of biologically active substances, 1,2,4-triazole and theophylline were used as the starting material. These compounds form the basis for the majority of drugs, such as diuretics, antifungal and antibacterial medicaments. The combination of heterocycles put under research demonstrate a repeated probability increase in the variety of activities. Therefore, the relevance of the following study is determined by valuable properties of these substances. Besides that, the presence of a hydrazide element accounts for a high probability level of antimicrobial, particularly anti-tuberculosis activity.  In order to identify optimal conditions for the synthesis and physicochemical property research, 2-((5-((theophylline-7'-yl)methyl)-4-R-4H-1,2,4-triazole-3-yl)thio) acetohydrazide ylidenderivatives were obtained. The process of production was carried out through long chain reactions, using the sodium salt of theophylline as a substrate. The conversion is well known being described in many papers. Hydrazide was taken as the starting compound. It was dissolved in water-alcoholic medium while separately, aldehyde was dissolved or mixed in ethyl alcohol as well. The resulting solutions were decanted. The precipitate formed immediately or after a certain period of time, which is likely due to the state of matter of the starting aldehyde. 10 compounds (light-yellow crystalline materials with sharp melting point) were synthesized after that. Their structures and physicochemical properties were confirmed with modern methods of analysis. It is established that the reaction proceeds rapidly with a yield of 77‒95% in water-alcoholic medium at a temperature of about 80 °C.

Honey as a marinade component for meat semi-finished products

2021 ◽  
Vol 12 (2) ◽  
Author(s):  
L Tyshchenko ◽  
◽  
O Pylypchuk ◽  
V Israelyan ◽  
L Adamchuk ◽  
...  
Keyword(s):  
New Product Development ◽  
New Technologies ◽  
Ph Value ◽  
Current Trend ◽  
Antioxidant Properties ◽  
Meat Products ◽  
Biologically Active ◽  
High Biological Activity ◽  
Water Binding ◽  
Raw Meat

The features of biochemical composition and properties of meat raw materials determine the need to find new technologies for its processing in order to obtain new products with high consumer properties. The current trend in the development of technology is the enrichment of raw meat materials with useful components with functional and technological properties that have a high biological value: apiproducts and products of plant origin. Due to its chemical composition, honey contains about 500 different biologically active substances, which are feasible to use as natural antioxidants in the production of semi-finished meat products. Different types of honey are characterized by high biological activity, dietary and medicinal properties. During heat treatment, meat marinated with honey marinade acquires new taste qualities, the appearance becomes brighter due to the caramelization of honey. The article presents the results of an investigation of the initial raw meat materials, honey, and marinated semi-finished product. We found that a decrease in the pH value of the marinated semi-finished product during a 24-hour treatment period provides meat stability to storage, since most bacteria grow at high pH values, while their growth slows down in acidic nutrient media with pH value below 6.2. Long-term marination makes it possible to obtain meat with increased water-binding and water-holding capacity and improved consistency and juiciness. The task of new product development requires new approaches and techniques in technology. The use of apiproducts, which have antioxidant properties, will allow avoiding the use of food preservatives and stabilizers of chemical origin. Therefore, honey can be used as a part of marinated meat products. The introduction of the active components of honey into the marinade will extend the shelf life and correct the organoleptic properties.

scholarly journals Interfacial photochemistry of biogenic surfactants: a major source of abiotic volatile organic compounds

2017 ◽  
Vol 200 ◽  
pp. 59-74 ◽  
Author(s):  
Martin Brüggemann ◽  
Nathalie Hayeck ◽  
Chloé Bonnineau ◽  
Stéphane Pesce ◽  
Peter A. Alpert ◽  
...  
Keyword(s):  
Atmospheric Chemistry ◽  
Peroxy Radical ◽  
Bulk Water ◽  
Biologically Active ◽  
Radiation Budget ◽  
Cloud Formation ◽  
Oh Radicals ◽  
Aerosol Formation ◽  
Ambient Conditions ◽  
High Biological Activity

Films of biogenic compounds exposed to the atmosphere are ubiquitously found on the surfaces of cloud droplets, aerosol particles, buildings, plants, soils and the ocean. These air/water interfaces host countless amphiphilic compounds concentrated there with respect to in bulk water, leading to a unique chemical environment. Here, photochemical processes at the air/water interface of biofilm-containing solutions were studied, demonstrating abiotic VOC production from authentic biogenic surfactants under ambient conditions. Using a combination of online-APCI-HRMS and PTR-ToF-MS, unsaturated and functionalized VOCs were identified and quantified, giving emission fluxes comparable to previous field and laboratory observations. Interestingly, VOC fluxes increased with the decay of microbial cells in the samples, indicating that cell lysis due to cell death was the main source for surfactants and VOC production. In particular, irradiation of samples containing solely biofilm cells without matrix components exhibited the strongest VOC production upon irradiation. In agreement with previous studies, LC-MS measurements of the liquid phase suggested the presence of fatty acids and known photosensitizers, possibly inducing the observed VOC productionviaperoxy radical chemistry. Up to now, such VOC emissions were directly accounted to high biological activity in surface waters. However, the results obtained suggest that abiotic photochemistry can lead to similar emissions into the atmosphere, especially in less biologically-active regions. Furthermore, chamber experiments suggest that oxidation (O3/OH radicals) of the photochemically-produced VOCs leads to aerosol formation and growth, possibly affecting atmospheric chemistry and climate-related processes, such as cloud formation or the Earth’s radiation budget.

scholarly journals FLAVONOIDS OF THE EAST ASIAN SPECIES SERRATULA MANSHURICA KITAG.

2021 ◽  
pp. 167-173
Author(s):  
Aleksey Viktorovich Myagchilov ◽  
Larisa Ivanovna Sokolova ◽  
Petr Grigor'yevich Gorovoy
Keyword(s):  
Aerial Part ◽  
Russian Far East ◽  
Far East ◽  
Growing Season ◽  
Reversed Phase ◽  
Biologically Active ◽  
High Biological Activity ◽  
Flavonoid Aglycones ◽  
Promising Source ◽  
Maximum Content

One of the poorly studied and widespread plants in the Russian Far East is the Manchurian saw-wort (Serratula manshurica Kitag.). It is known that this plant is rich in phytoecdysteroids, which have high biological activity (anabolic, adaptogenic, cardiotropic, immunomodulatory effects). Two biologically active compounds of the flavonoid class were isolated from the aerial part of Serratula manshurica Kitag. Growing in the Primorsky Kray of the Far East of Russia by liquid extraction and recrystallization methods: quercetin-4'-O-β-D-glucuronopyranoside and apigenin-7-O-β-D-glucuronopyranoside. The structure of the isolated compounds was proved by UV-, NMR-spectroscopy and mass spectrometry with electrospray ionization. The quantitative content of flavonoids in the aerial part of the Serratula manshurica plant in different phenological phases of plant development (luteolin-4'-O-β-D-glucuronopyranoside, quercetin-4'-O-β-D-glucuronopyranoside, apigenin-7-O-β-D-glucuronopyranoside, 3-methylquercetin-4'-O-β-D-glucuronopyranoside, quercetin, apigenin, 3-methylquercetin, luteolin, isokaempferide) was determined by the method of reversed phase liquid chromatography (RP HPLC). It was shown that the maximum content of flavonoid aglycones in plants was observed during the beginning of the growing season and in the budding phase, and their glycosides - during the flowering phase. Thus, to obtain plant material with the maximum content of flavonoid aglycones (quercetin, 3-methylquercetin, luteolin) the collection of vegetative mass should be carried out during the beginning of the growing season, and their glycosides - during the flowering period. Serratula manshurica Kitag., which grows abundantly on the territory of Primorsky Krai, can be considered a constantly renewable and promising source for obtaining flavonoids.

scholarly journals The Development of New Methods of Disposal of Processing Sulfur Wastes from a Hydro-carbon Feedstock to various Sulfur Derivatives

2020 ◽  
Author(s):  
Nadezhda Titovna Berberova ◽  
Nadezhda Anatol’evna Pivovarova ◽  
Valentina Nikolaevna Storozhenko ◽  
Elena Vladimirovna Shinkar ◽  
Ivan Vladimorovich Smolyaninov
Keyword(s):  
Hydrogen Sulfide ◽  
Environmental Safety ◽  
Sulfur Compounds ◽  
Low Energy ◽  
Oil Products ◽  
Biologically Active ◽  
New Methods ◽  
Redox Activation ◽  
Hydro Carbon ◽  
Acidic Components

The tendency to reduce the content of sulfur compounds in particular H2S and low molecular thiols (RSH) in oil products sets the task of their extraction and disposal in order to obtain practically useful sulfur compounds. Hydrogen sulfide and thiols can be extracted from hydrocarbon fractions using N-methylpyrrolidone-as selective solvent. Hydrogen sulfide can be extracted from the residual oil products using a low energy exposure such as ultrasound and a constant magnetic field. The releasing gas is concentrated in N-methylpyrrolidone. Further, hydrogen sulfide and mercaptans can be used in the chemical synthesis of biologically active thioethers containing a catechol fragment. Another way of H2S and RSH utilization is the chemical adsorption of acidic components by modified polynuclear pivalate (acetate) zinc(II) silica gel. As a result of the interaction of complexes with H2S and RSH, it is possible to obtain zinc sulfide or zinc thiolates, which can be used in various fields of industry or agriculture. Hydrogen sulfide and thiols can also be applied in the electrochemical or microvaved assisted organic synthesis. This approach is promising from the standpoint of environmental safety of synthesis and low energy costs of the reactions. The SH-functionalization of hydrocarbons (indan, indene, decalin, tetralin, naphthalene and 1,2-dihydronaphthalene) leads to obtain biologically active compounds. Keywords: hydrogen sulfide, thiols, extraction, N-methylpyrrolidone, ultrasonic and magnetic treatment, microwave, redox activation

scholarly journals Some properties of Bacillus subtilis probiotic supplements from byproducts of agricultural complex

2017 ◽  
Vol 7 (4) ◽  
pp. 597-603
Author(s):  
N. A. Ushakova ◽  
R. V. Nekrasov ◽  
E. S. Brodskiy ◽  
V. V. Voznesenskaya ◽  
A. A. Kozlova ◽  
...  
Keyword(s):  
Biological Activity ◽  
Small Intestine ◽  
Bacterial Culture ◽  
Sea Buckthorn ◽  
Biologically Active ◽  
High Biological Activity ◽  
Beet Pulp ◽  
Hormonal System ◽  
Flax Seeds ◽  
Active Substances

Previously, it was shown that B. subtilis B-8130 produce bactericides and biologically active substances while fermenting different phyto-substrates. The bacilli release somatostatin-like peptide during solid-state fermentation of beet pulp sugar, sea-buckthorn leaves and flax seeds. The growth of bacterial culture is accompanied by the formation of biofilm that encapsulates phyto-carriers. The combination of all above factors determines high biological activity of probiotics and their effects on digestion in animals. We tested the addition of 0.1% B. subtilis B-8130 fermented substrate to the pig ration. The experiments showed higher weight gain, lowered daily feed expenses and improved survival. We found substantial changes in morphology of the small intestine epithelial cells associated with intensive absorption of feed nutrients in pigs that were fed with fermented sea-buckthorn leaves. This suggests influence of probiotics on digestion mediated by hormonal system.

scholarly journals Оbtaining isovaleric acid extraction from plant raw material

2021 ◽  
Vol 4 (1) ◽  
pp. 152-157
Author(s):  
V. V. Dyachok ◽  
◽  
I. L. Dіachok ◽  
O. L. Ivankiv ◽  
◽  
...  
Keyword(s):  
Chemical Structure ◽  
Extraction Process ◽  
Isovaleric Acid ◽  
Biologically Active ◽  
Raw Material ◽  
Aqueous Alcohol ◽  
Acid Extraction ◽  
Aqueous Alcohol Solution ◽  
Straight Line ◽  
Method Of Extraction

The paper presents a mathematical description of the process of obtaining isovaleric acid by the method of extraction of roots and rhizomes of valerian, taking into account its chemical structure and the nature of the extractant. The traditional case of the extraction process, the straight line of equilibrium in the case of using an aqueous alcohol solution as an extractant and the unconventional case of using desalinated water as an extractant, which is represented by a convex equilibrium line, is substantiated. The cause of the unconventional case is the phenomenon of formation of associations between diphilic molecules of isovaleric acid and dipole molecules with water. The possibility of using ion exchange was investigated to isolate isovaleric acid from the extract of biologically active compounds. The identity of isovaleric acid obtained in this way by the gas method was confirmed chromatography.

scholarly journals Comparison of the Content of Selected Bioactive Components and Antiradical Properties in Yoghurts Enriched with Chia Seeds (Salvia hispanica L.) and Chia Seeds Soaked in Apple Juice

Antioxidants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1989
Author(s):  
Beata Drużyńska ◽  
Rafał Wołosiak ◽  
Monika Grzebalska ◽  
Ewa Majewska ◽  
Marta Ciecierska ◽  
...  
Keyword(s):  
Apple Juice ◽  
Antioxidant Properties ◽  
Rich Source ◽  
Biologically Active ◽  
High Biological Activity ◽  
Beneficial Effects ◽  
Health Promoting ◽  
Bioactive Ingredients ◽  
Conventional Foods ◽  
Salvia Hispanica L

Due to the fact that consumers are looking for new, health-promoting products, there is a growing interest in various ingredients with a high biological activity that could enrich conventional foods. As is known, chia seeds are a rich source of various health-promoting compounds. The objective of this study was to determine the content of selected biologically active compounds and their antioxidant properties by means of DPPH●, ABTS+●, and the ability to chelate Fe (II) ions in chia seeds and yoghurts with the addition of these seeds and seeds soaked in apple juice. It was found that chia seeds are a rich source of bioactive ingredients with beneficial effects on human health—especially polyphenols. All the extracts showed antioxidant properties against the radicals used. The addition of seeds to yoghurt contributed to the presence of polyphenols, while soaking in apple juice resulted in a higher content of polyphenols in yoghurts. The enriched yoghurt extracts showed antioxidant properties against DPPH radicals and the ability to chelate Fe (II) ions. The addition of seeds soaked in apple juice significantly influenced the antioxidant activity against ABTS radicals. The addition of seeds (plain and soaked) did not cause significant changes in the pH of the yoghurts.

Mechanical composites based on biologically active compounds from larch wood

2010 ◽  
Vol 46 (2) ◽  
pp. 212-215 ◽  
Author(s):  
E. N. Medvedeva ◽  
N. A. Neverova ◽  
L. A. Ostroukhova ◽  
V. A. Babkin ◽  
S. A. Gus’kov ◽  
...  
Keyword(s):  
Biologically Active Compounds ◽  
Biologically Active ◽  
Active Compounds ◽  
Larch Wood ◽  
Mechanical Composites

scholarly journals Biotic and Abiotic Factors Affecting the Content of the Chosen Antioxidant Compounds in Vegetables

2012 ◽  
Vol 76 (1) ◽  
pp. 55-78 ◽  
Author(s):  
Anita Biesiada ◽  
Anna Tomczak
Keyword(s):  
Defense Mechanisms ◽  
Abiotic Factors ◽  
Antioxidant Properties ◽  
Mechanical Damage ◽  
Biologically Active ◽  
Antioxidant Compounds ◽  
Factors Affecting ◽  
Large Group ◽  
Biotic And Abiotic Factors ◽  
High Antioxidant Activity

Biotic and Abiotic Factors Affecting the Content of the Chosen Antioxidant Compounds in VegetablesVegetables are a rich source of biologically active substances, which support the body's defense mechanisms. A large group of these substances are compounds with antioxidant properties. Apart from vitamins (A, C and E), tocopherols, carotenoids, glutathiones and thiocyanates, polyphenols are also classified as the compounds of antioxidant properties being found in plants. They include: phenolic acids, flavonoids and hydroxycinnamic acid and among them a large group of anthocyanins. These compounds inhibit DNA damage in cancer cells, induce the production of insulin in the pancreas and protect the human brain from aging. They have also high antioxidant activity, which determines the defense mechanisms of plants under stress, such as temperature varia-tions, UV radiation, attacks by pests and mechanical damage. Their content may vary among individual plants of the same species, which is associated with a number of internal and external conditions, such as genetic factors, environmental and agronomic. The contents of anthocyanins determines plant species, botanical variety and breeding and biological processes associated with ontogenesis. Also climatic and soil factors, the factors influencing the content of antioxidants and agronomic factors such as method, place and date of planting, fertilizing, mulching, salinity may contribute to the formation of stress conditions during plant growth and increase the content of antioxidants in plants. This review focused on the content, composition, and antioxidant capacity of vegetables.

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