scholarly journals Assessment of the antimicrobial activity of Helichrysum arenarium flowers and Lithospermum officinale leaves extracts

2021 ◽  
Vol 11 (225) ◽  
Author(s):  
Natalia Adamtsevich ◽  
◽  
Valery Boltovsky ◽  
Victor Leontiev ◽  
Vladimir Titok ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Botanical Garden ◽  
Associate Professor ◽  
National Academy Of Sciences ◽  
Gram Positive ◽  
State Technological ◽  
Lithospermum Officinale ◽  
Technological University ◽  
Academy Of Sciences

Evaluation of the antimicrobial activity of extracts of flowers of Helichrysum and Sparrow leaves Natallya Adamtsevich, Postgraduate Student, Department of Biotechnology, Belarusian State Technological University Valery Baltousky, Professor of the Department of Chemical Processing of Wood and the Department of Biotechnology of the Belarusian State Technological University, Doctor of Technical Sciences, Associate Professor Viktar Lyavontsyev, Head of the Department of Biotechnology, Belarusian State Technological University, Candidate of Chemical Sciences, Associate Professor Uladimir Tsitok, Director of the Central Botanical Garden of the National Academy of Sciences of Belarus, Corresponding Member Su mmary. The article provides an assessment of the antimicrobial activity of the extracts of the everlasting flowers and the leaves of the littlewale against gram-positive (Bacillus subtilis, Staphylococcus aureus), gram-negative (Escherichia coli, Pseudomonas aeruginosa) pathogenic bacteria and yeast-like fungi (Candida albicans). It has been established that the extract of the flowers of the everlasting has an antimicrobial action only against gram-positive bacteria. All types of the studied microorganisms are not sensitive to the extract of the leaves of the littlewale.

Technology of wood products

2019 ◽  
Author(s):  
Александр Барташевич ◽  
Aleksandr Bartashevich ◽  
Людмила Игнатович ◽  
Lyudmila Ignatovich ◽  
Сергей Шетько ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Wood Products ◽  
New Materials ◽  
National Academy Of Sciences ◽  
Technological Processes ◽  
Technological Regimes ◽  
State Technological ◽  
Technological University ◽  
Academy Of Sciences

The manual systematized used in the production of wood products equipment, technological regimes and organization of various processes. The appendices contain new materials, technological processes and modes of their application developed at the Belarusian state technological University together with the Institute of heat and mass transfer named after A. V. Lykov of the National Academy of Sciences of Belarus. For students and teachers, as well as all those interested in the production of wood products.

Biosynthesis of Silver Nanoparticles by Punica Granatum Peel Extract and their Biological Activity on different Pathogenic Bacteria

2021 ◽  
Vol 19 (9) ◽  
pp. 38-45
Author(s):  
Hussein H. Al-Turnachy ◽  
Fadhilk. alibraheemi ◽  
Ahmed Abd Alreda Madhloom ◽  
Zahraa Yosif Motaweq ◽  
Nibras Yahya Abdulla
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Biological Activity ◽  
Pathogenic Bacteria ◽  
Punica Granatum ◽  
Gram Positive ◽  
Gram Negative ◽  
Inhibition Zones ◽  
Peel Extract

The present study was included the assessment of the antimicrobial activity of AgNPs synthesized by Punica granatum peel extract against pathogenic bacteria by testing warm aqueous P. granatum peel extract and silver nanoparticles. Punica granatum indicated potency for AgNP extracellular nanobiosynthesis after addition of silver nitrate (AgNO3) 4mM to the extract supernatant, in both concentrations (100mg and 50mg). The biogenic AgNPs showed potency to inhibit both gram-negative and gram-positive bacterial growth. Zons of inhibition in (mm) was lesser in gram-positive than gram-negative bacteria. The resulted phytogenic AgNPs gave higher biological activity than warm aqueous Punica granatum peel extract. The inhibition zone of the phytogenic AgNPs on E. coli reached 17.53, 22.35, and 26.06 mm at (0.1, 0.5, and 1) mg/ml respectively. While inhibition zones of Punica warm aqueous extract reached 5.33, 10.63, and 16.08 mm at the same concentrations. phytogenic AgNPs gave smaller inhibition zones in gram-positive than gram- negative. Cytotoxic activity of the phytogenic AgNPs was assayed in vitro agaist human blood erythrocytes (RBCs), spectroscopic results showed absorbance at 540 nm hemolysis was observed. In general, AgNPs showed least RBCs hemolysis percentage, at 1 mg/ml concentration, hemolysis percentage was (4.50%). This study, concluded that the Punica granatum peel extract has the power of synthses of AgNPs characterized by broad spectrum antimicrobial activity with cyto-toxicity proportional to AgNPs concentration.

scholarly journals Morphobiological characteristics of pink-crowned Narcissus from the collection of the Central Botanical Garden of the National Academy of Sciences of Belarus

2018 ◽  
Vol 63 (4) ◽  
pp. 463-471
Author(s):  
L. V. Zavadskaya
Keyword(s):  
Central Area ◽  
Botanical Garden ◽  
Multiplication Factor ◽  
National Academy Of Sciences ◽  
Local Conditions ◽  
Biological Features ◽  
Morphobiological Characteristics ◽  
Academy Of Sciences ◽  
Phenological Phases ◽  
Selection Work

Data on a genus of the Daffodils have been given in the article. The areas of species have been designated. Dates of selection work for the Daffodils have been determined. Countries and number of plant breeders of the Daffodils have been presented. The first cultivar of the Daffodil with pink crown has been specified, too.Group accessory for the 55 Daffodils from the collection of the Central Botanical Garden of NAS of Belarus has been defined. The age and authorship of the studied cultivars have been established. Assessment of their biological features in the conditions of the Central area of Belarus has been carried out. Periods and duration of some phenological phases have been established. Height of plants and sizes of flowers have been estimated. Periods of the Daffodils with a pink crown blossoming have been established. The abundance of blossoming depends on cultivar’s features and duration of their cultivation without grafting. The flowers of Daffodils with a pink crown have been measured from 6.5 to 11.5 cm. For the long-cupped Daffodils sizes and forms of crowns are various. The multiplication factor during the three years cultivation fluctuates from 5 to 16 units. Grades are rather steady in local conditions against diseases and pests.From studied cultivars the 13 best ones have been recommended for cultivation.

scholarly journals Assessment of Monoterpene Components in Wild Rose Petals Extract

2020 ◽  
Vol 21 (2) ◽  
pp. 254-262
Author(s):  
Koval Inna
Keyword(s):  
Gas Chromatography ◽  
Steam Distillation ◽  
Botanical Garden ◽  
Component Composition ◽  
Biologically Active ◽  
National Academy Of Sciences ◽  
Volatile Organic ◽  
Rose Petals ◽  
Academy Of Sciences ◽  
Active Substances

The content, component composition, and main directions of the use of monoterpenes of wild rose petals compounds are considered in the research. The study on six wild rose species was carried out in the collection of M.M. Gryshko National Botanical Garden of the National Academy of Sciences of Ukraine. Volatile organic compounds were isolated by steam distillation, and their determination was performed by means of gas chromatography. R. rugosa petals contained the highest number of monoterpenoids, while R. canina petals – the lowest. In our research twentyone different (acyclic, monocyclic, bicyclic) monoterpenoids were identified, including alcohols, aldehydes, ethers, and ketones. All groups of monoterpenoids are biologically active substances and have a significant effect on the aroma of the studied plants.

Antimicrobial Activity of Fractions and Compounds from Calophyllum brasiliense (Clusiaceae/Guttiferae)

2004 ◽  
Vol 59 (9-10) ◽  
pp. 657-662 ◽  
Author(s):  
Juliana B. Pretto ◽  
Valdir Cechinel-Filho ◽  
Vânia F. Noldin ◽  
Mara R. K. Sartori ◽  
Daniela E. B Isaias ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Protocatechuic Acid ◽  
Inhibitory Concentration ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Methanolic Extracts ◽  
Calophyllum Brasiliense

Abstract Calophyllum brasiliense (Clusiaceae/Guttiferae) is a native Brazilian medicinal plant traditionally used against several diseases, including infectious pathologies. Crude methanolic extracts (CME) and two fractions, denoted non-polar (soluble in chloroform) and polar (nonsoluble in chloroform), were prepared from different parts of the plant (roots, stems, leaves, flowers and fruits) and studied. The following compounds were isolated and tested against pathogenic bacteria and yeasts by determination of the minimal inhibitory concentration (MIC): brasiliensic acid (1), gallic acid (2), epicatechin (3), protocatechuic acid (4), friedelin (5) and 1,5-dihydroxyxanthone (6). The results indicated that all the parts of the plant exhibited antimicrobial activity against Gram-positive bacteria, which are selectively inhibited by components of C. brasiliense. No activity was observed against Gram-negative bacteria and yeasts tested. Regarding the isolated compounds, substance 4 showed antimicrobial activity against all the tested microorganisms, whereas compound 6 exhibited antimicrobial activity only against Gram-positive bacteria. The results from the current study confirm and justify the popular use of this plant to treat infectious processes.

scholarly journals ANALYSIS OF GYNZENOSIDES IN THE ROOTS OF PANAX GINSENG INTRODUCED IN THE CENTRAL BOTANICAL GARDEN OF NAS OF BELARUS

2018 ◽  
Vol 62 (4) ◽  
pp. 447-454
Author(s):  
Dmitry V. Kochkin ◽  
Elena S. Glagoleva ◽  
Boris A. Galischev ◽  
Elena V. Spiridovich ◽  
Alexander M. Nosov ◽  
...  
Keyword(s):  
Panax Ginseng ◽  
High Performance ◽  
Lateral Roots ◽  
Total Content ◽  
Botanical Garden ◽  
Dry Mass ◽  
Quantitative Composition ◽  
National Academy Of Sciences ◽  
The Republic ◽  
Academy Of Sciences

For the first time, a detailed study of the qualitative and quantitative composition of ginsenosides in the Panax ginseng roots was carried out with the help of high-performance liquid chromatography combined with mass spectrometry (HPLC-MS). The plants were introduced into the conditions of the Republic of Belarus at the experimental plot of the Central Botanical Garden of the National Academy of Sciences of Belarus. It was found that in the examined roots, all basic neutral glycosides of ginseng (ginsenosides Rb1, Rc, Rb2/Rb3, Rd, Rf, Rg1 and Re), as well as their malonylated derivatives (malonylginsenosides Rb1, Rc, Rb2/Rb3, Rd, Rg1 and Re) and some “minor” ginsenosides (20-gluco-ginsenoside Rf, notoginsenosides R1 and R2, isomers of malonyl-ginsenosides Rb1 and Rd) are present. The research also showed that different parts of the P. ginseng roots differ significantly in a total content of ginsenosides: for the main root, this parameter was 3.3 % of dry mass, and for the lateral roots – 7.8 % of dry mass.

scholarly journals The nature of the natural renewal of species of the genus Abies Mill. in the conditions of the Central Botanical Garden of the National Academy of Sciences of Belarus

2019 ◽  
Vol 64 (1) ◽  
pp. 102-106
Author(s):  
R. I. Karaneuski ◽  
U. I. Torchyk
Keyword(s):  
Botanical Garden ◽  
Older Age ◽  
Age Group ◽  
National Academy Of Sciences ◽  
Different Ages ◽  
Vital State ◽  
Academy Of Sciences

The article contains information on the presence and vital state of the natural renewal of 10 species of fir growing on the territory of the Central Botanical Garden of NAS of Belarus.Under the conditions of introduction, the investigated species of fir give a viable self-seeding, though not always abundant and uniform. The best indices of height and diameter of the root neck of different ages are the shoots of A. nordmanniana and A. sibirica. A. alba, A. nordmanniana and A. sibirica have the largest number of self-sowing adults of the older age group. In all investigated firs, the vital state of the shoots is estimated as healthy.

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