Перевод названия: THE ASSESSMENT OF WATER EXTRACTS LARCH SIBERIAN BARK ANTIMICROBIC ACTIVITY FOR THEIR OPPORTUNITIES PRACTICAL APPLICATION
Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: VI Международного симпозиума имени Б.Н. Уголева, посвященного 50-летию Регионального Координационного совета по современным проблемам древесиноведения; Красноярск; Красноярск
Год издания: 2018
Аннотация: At present, the waste utilization of timber harvesting and processing is a very important problem left unsolved. The most part of wastes of timber harvesting and processing (branch timber, roots, stubs and bark) is taken out to stockpiles; therefore, the appearance of new methods of their further utilization is highly desired. The Показать полностьюpresence of bactericidal properties in the bark of Siberian larch is a fact confirmed by a number of researchers; the composted water extracts of the bark also have the biological activity. One of the possible ways of using the biological activity of the larch bark is the creation of textile materials with bactericidal and fungicide properties. It is expedient to paint polyamide fibers with water extracts of the Siberian larch bark to obtain the scale of beige-brown tones. In this regard, the purpose of the present research was to study the bactericidal activity of water extracts of the bark of the Siberian larch depending on their concentration and storage period, as well as polyamide fibers painted using them. Opportunistic bacteria of Pseudomonas aeruginosa THCC 27885, Klebsiella pneumonia T 904, Escherichia coli ATCC 39/21141, Staphylococcus aureus ATCC 25922 and strains of saprotrophic bacteria - Pseudomonas sp., Bacillus subtilis , Bacillus amyloliquefaciens were the test objects. The initial raw material was the bark of the Siberian larch ( Larix sibirica L.) ground to fractions of 1-3 mm. To study the bactericidal activity of the extracts, a working suspension of microorganisms was added to 5 ml of the studied extract and its cultivations and then incubated. To investigate the antibacterial activity of the polyamide fibers painted using the water extracts of the bark, the tested cultures were cultivated in Petri dishes, then, the fiber pieces were placed on this surface and incubated. As a result, the extracts and dry concentrate (diluted with the distilled water) of the bark of the Siberian larch was observed to inhibit the growth of all the tested bacteria within 72 hours. The term of water extracts influences their bactericidal activity as related to opportunistic test cultures, and doesn't influence the bactericidal activity as related to saprotrophic microorganisms. The painted polyamide fibers was observed to have the bactericidal activity in relation to the culture of Bacillus amyloliquefaciens , even after five washings.
Журнал: СТРОЕНИЕ, СВОЙСТВА И КАЧЕСТВО ДРЕВЕСИНЫ - 2018
Номера страниц: 104-107
Издатель: Издательство Сибирского отделения РАН