MODEL BIOMEMBRANES AS TEST OBJECTS FOR THE DETERMINATION OF CONCENTRATION RANGES OF HARMFUL CHEMICAL SUBSTANCES IN BIOLOGICAL MEDIUMS AND OBJECTS OF EXTERNAL ENVIRONMENT

2019 ◽  
pp. 33-45
Author(s):  
O. M. Alekseeva ◽  
A. V. Krementsova ◽  
A. V. Krivandin ◽  
O. V. Shatalova ◽  
Yu. A. Kim
Keyword(s):  
Biologically Active Substances ◽  
Biologically Active ◽  
Diffraction Scattering ◽  
Wide Range ◽  
Multilamellar Liposomes ◽  
Small Doses ◽  
Pre Treatment ◽  
Active Substances ◽  
Test Objects

The paper presents data on changes in model biomembranes (liposomes, erythrocyte shadows, erythrocytes) used as test objects to determine those ranges of concentrations of biologically active substances in which there is no violation of the structure or function of experimental objects. Melaphene, plant growth regulator used in small doses in seed pre-treatment, and antioxidant phenosan derivatives, phenoxane and IHFANs, have been used as biologically active substances. It was shown by DSC that phenosan derivatives at concentrations equal to 10-5 M and higher destroy the microdomain organization in the bilayers of phospholipid multilamellar liposomes and reshape protein microdomains in the shadows of red blood cells. Melaphene in small and large concentrations changes polymodal the microdomain organization in the bilayers of phospholipid multilamellar liposomes without destroying the structure and does not affect the protein microdomains in the shadows. An increase in the membrane permeability in isolated intact erythrocytes in the presence of melaphene in large and small concentrations has been revealed by means of spectral anaslysis. The method of small-angle diffraction scattering showed the absence of the effect of melaphene in a wide range of concentrations on the thickness of phospholipid bilayers and the order of their packaging in multilamellar liposomes.

The content of decenoic acids in drone brood preparations and combined preparations based on it

Biomics ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 389-393
Author(s):  
D.V. Mitrofanov ◽  
N.V. Budnikova
Keyword(s):  
Royal Jelly ◽  
Storage Conditions ◽  
Water Soluble ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Strict Adherence ◽  
Drone Brood ◽  
Wide Range ◽  
Active Substances ◽  
Melanin Complex

The drone brood contains a large number of substances with antioxidant activity. These substances require stabilization and strict adherence to storage conditions. Among these substances are unique decenoic acids, the content of which is an indicator of the quality of drone brood and products based on it. The ability of drone brood to reduce the manifestations of oxidative stress is shown. There are dietary supplements for food and drugs based on drone brood, which are used for a wide range of diseases. Together with drone brood, chitosan-containing products, propolis, royal jelly can be used. They enrich the composition with their own biologically active substances and affect the preservation of the biologically active substances of the drone brood. Promising are the products containing, in addition to the drone brood, a chitin-chitosan-melanin complex from bees, propolis, royal jelly. The chitin-chitosan-melanin complex in the amount of 5% in the composition of the adsorbent practically does not affect the preservation of decenic acids, while in the amount of 2% and 10% it somewhat worsens. The acid-soluble and water-soluble chitosan of marine crustaceans significantly worsens the preservation of decenoic acids in the product. Drone brood with royal jelly demonstrates a rather high content of decenoic acids. When propolis is introduced into the composition of the product, the content of decenoic acids increases according to the content of propolis.

scholarly journals Biologically Active Substances of Siberian Medical Plants in Functional Wgey-Based Drinks

2019 ◽  
Vol 49 (1) ◽  
pp. 14-22
Author(s):  
Светлана Иванова ◽  
Svetlana Ivanova ◽  
Ирина Милентьева ◽  
Irina Milenteva ◽  
Людмила Асякина ◽  
...  
Keyword(s):  
Callus Cultures ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Rhodiola Rosea ◽  
Plant Materials ◽  
Rhaponticum Carthamoides ◽  
Wide Range ◽  
Mountain Ash ◽  
Active Substances ◽  
Mineral Base

The use of infusions and extracts from domestic plant materials is a promising direction in the development of functional beverages since they contain a wide range of substances of various pharmacological properties. Drinks fortified with physiologically active natural components maintain a certain level of this content in human body. They can have a healing or prophylactic effect. However, there is a lack of technologies for the effective production of biologically active substances from plant materials. Moreover, the development of cultivated botanical medicinal plant species remains quite poor. The present study features the qualitative and quantitative composition of biologically active substances of medicinal plants that are endemics of Siberia. They are Rhodiola rosea (Rhodiola rosea L.) and maral root (Rhaponticum carthamoides). The paper introduces a method for increasing their biosynthetic activity. An experiment helped to select a composition of the nutrient medium for the cultivation of callus cultures of Rhodiola rosea (Rhodiola rosea L.) and maral root (Rhaponticum carthamoides) in vitro, which contributed to an increase in the biosynthesis of biologically active substances. For callus cultures of Rhodiola Rosea (line R.r-1k) the following composition was used: mineral base – MS; sucrose – 30 g; inositol – 100 mg; thiamine – 1.0 mg; pyridoxine – 1.0 mg; Ca-panthetonate – 10 mg; kinetin – 0.05 g; naphthyl acetic acid – 0.1 g; 2.4-D – 0.5. For callus cultures of maral root (line R.c -2k): mineral base – SH; sucrose – 30 g; inositol – 100 mg; thiamine – 5.0 mg; pyridoxine – 0.5 mg; nicotinic acid – 5.0 mg; kinetin – 0.1 g; indoleacetic acid – 1.0 g. The authors developed a technology for the production of functional whey-based tonic drink fortified with extract of carotenoids isolated from the fruits of mountain ash and the extract of biologically active substances Rhodiola rosea and maral root. The presence of biologically active substances in the plant and medicinal raw materials gives the drink antioxidant and bactericidal properties, as well as helps to raise the overall state of the organizm and strengthen the immune system.

scholarly journals SPECTROPHOTOMETRIC DETERMINATION OF ANTIOXIDANT SODIUM METABISULPHITE CONTENT IN PREPARED MEDICINAL FORMS OF VETERINARY MEDICINAL PRODUCTS

2020 ◽  
Vol 21 (2) ◽  
pp. 189-198
Author(s):  
H. Yu. Teslyar ◽  
M. Ya. Smolinska ◽  
I. Ya. Kotsyumbas ◽  
N. M. Chyhyn ◽  
N. G. Rohulia ◽  
...  
Keyword(s):  
Spectrophotometric Determination ◽  
Storage Time ◽  
Analytical Signal ◽  
Veterinary Drugs ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Optimal Conditions ◽  
Sodium Metabisulphite ◽  
Active Substances

An analytical method for the quantitative determination of antioxidant sodium metabisulphite in veterinary drugs has been proposed by spectrophotometric method. Based on the literature data, the optimal conditions of the analytical reaction were selected experimentally. The dependence of the value of the analytical signal on the temperature of the reaction medium, concentration of p-rosaniline and duration of the reaction was investigated to establish the optimal conditions of the analytical reaction and obtain a stable analytical signal. The stability of the colored analytical form in time was also checked and the linear dependence of the value of the analytical signal on the concentration of sodium metabisulphite was investigated. The analytical reaction at room temperature is optimal. The maximum analaytical signal is achieved by carrying out the analytical reaction for 10 minutes and then practically does not change for an hour. To achieve the maximum analytical signal, it is necessary to use a 20-fold excess of dye relative to sodium metabisulphite. The analytical signal remains stable only for the first hour, then gradually begins to decrease. Metrological characteristics of the method of determination of metabisulphite in veterinary drugs are calculated, the limits of spectrophotometric determination are 0.33 – 2.50 μg/ml. The correctness of the developed method was checked on model solutions by the method of "introduced-found" method of comparison in the presence of various biologically active substances that are part of drugs together with sodium metabisulphite. The content of sodium metabisulphite in veterinary drugs of domestic and foreign production at different intervals of their storage time was established. It is shown that the content of sodium metabisulphite in drugs decreases during their storage time, until complete disappearance, which directly affects the content of the active substance, because in the absence of antioxidant oxidative processes with biologically active substances begin to take place.

scholarly journals Comparative study of technologies for extraction of biologically active substances from the raw material of animal origin

2021 ◽  
Vol 6 (3) ◽  
pp. 226-235
Author(s):  
E. R. Vasilevskaya ◽  
M. A. Aryuzina ◽  
E. S. Vetrova
Keyword(s):  
Molecular Weight ◽  
Trichloroacetic Acid ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Animal Origin ◽  
Low Molecular Weight ◽  
Acid Extraction ◽  
Trichloroacetic Acid Solution ◽  
Wide Range ◽  
Active Substances

Technologies of isolation and concentration of biologically active substances, developed in the middle of the 20th century, need adjustment and adaptation to modern conditions both to increase the activity of substances and for greater economic efficiency. The aim of the research is the comparison of dynamics of biologically active compounds extraction from porcines pancreas in two methods: the saline method based on 0.9% sodium chloride solution, and the acidic method based on 2.4% trichloroacetic acid solution. Also the purpose of research is to assess the possibilities for further optimization of technologies. The total protein concentration based on the biuret reaction in the samples taken during the extraction, as well as the calculation and analysis of the point degrees and rates of extraction are chosen as the controlled parameters. Local maxima of the protein yields into the extractant media at the 60th, 135th and 255th minute were recorded during saline extraction; and at the 75th and 135th minute during acid extraction. Also the proteomic profile of the extracts was studied. Wide range of compounds with molecular weight of less than 52 kDa was found in extracts based on physiological saline solution, and protein substances of whole presented range of molecular weights in trichloroacetic acid based extracts were considered. The predominance of low molecular weight protein fraction of interest was noted also in this method of extraction in comparison with the other methods of extraction. According to the UniProt database, we assume availability of probable compounds with a molecular weight of less than 30 kDa in the purified acidic extract. The presence of some proteins absent in the final saline extract was noted. The acidic erythrograms showed a weak degrading effect of both types of extracts on the membranes of rat erythrocytes, as well as the cytoprotective effect of acidic ultrafiltrates (less than 3 kDa). The obtained results prove a better efficiency of trichloroacetic acid extraction method used for obtaining a mixture of a wide range of compounds, including biologically active substances of low molecular weight.

scholarly journals Flavonoid’s Content Determination in Irradiated Samples via Spectrophotometric Analysis

2019 ◽  
Vol 5 (10) ◽  
pp. 32-39 ◽  
Author(s):  
A. Sarukhanov ◽  
A. Morozova ◽  
N. Vasilyeva ◽  
D. Krylenkin
Keyword(s):  
Quantitative Determination ◽  
Raw Materials ◽  
General Information ◽  
Spectrophotometric Analysis ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Qualitative And Quantitative ◽  
Content Determination ◽  
Active Substances

General information about biologically active substances flavonoids is concisely presented. The need for the quantitative determination of its content in products and the influence of product processing on flavonoid’s content is justified. Methods of qualitative and quantitative determination of flavonoids content in various products, medications and raw materials were studied. Based on this study the method of quantitative determination of flavonoid’s in samples of irradiated coriander is compiled and tested. Further ways to improve and adjust the compiled method for flavonoid’s content determination in irradiated samples via spectrophotometric analysis is considered.

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