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Wyświetlanie 1-2 z 2
Tytuł:
Differential effects of various soy isoflavone dietary supplements (nutraceuticals) on bacterial growth and human fibroblast viability
Autorzy:
Pierzynowska, Karolina
Rzeszótko, Agata
Blendowska, Aleksandra
Wieczerzak, Ewa
Rodziewicz-Motowidło, Sylwia
Piotrowska, Ewa
Węgrzyn, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1038411.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
genistein
soy isoflavone extracts
anti-menopausal dietary supplements
bacterial growth
viability of human cells
Opis:
Flavonoids, polyphenolic compounds present in many food products, affect growth of different bacterial species when tested as purified or synthetic substances. They can also influence gene expression in human cells, like fibroblasts. Here, we asked if soy isoflavone extracts, commonly used in many products sold as anti-menopausal dietary supplements, influence bacterial growth similarly to a synthetic isoflavone, genistein. Four commercially available products were tested in amounts corresponding to genistein concentrations causing inhibition of growth of Vibrio harveyi (a model bacterium sensitive to this isoflavone) and Escherichia coli (a model bacterium resistant to genistein). Differential effects of various extracts on V. harveyi and E. coli growth, from stimulation, to no changes, to inhibition, were observed. Moreover, contrary to genistein, the tested extracts caused a decrease (to different extent) in viability of human dermal fibroblasts. These results indicate that effects of various soy isoflavone extracts on bacterial growth and viability of human cells are different, despite similar declared composition of the commercially available products.
Źródło:
Acta Biochimica Polonica; 2018, 65, 2; 325-332
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bacterial endophytes of Trans-Ili Alatau regions plants as promising components of a microbial preparation for agricultural use
Autorzy:
Mukasheva, Togzhan
Berzhanova, Ramza
Ignatova, Lyudmila
Omirbekova, Anel
Brazhnikova, Yelena
Sydykbekova, Raikhan
Shigaeva, Maya
Powiązania:
https://bibliotekanauki.pl/articles/1038821.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
bacterial endophytes
growth-stimulating effect
plant growth-promoting bacteria
3-indolylacetic acid
barley
soybean
Opis:
In this study, 382 isolates of bacterial endophytes from tissues of plants grown in the foothills and piedmont plains of the Trans-Ili Alatau were isolated. It was found that certain strains actively produce indole-3-acetic acid (IAA) in a medium containing l-tryptophan. Among the strains studied, 26 strains (66%) showed a positive response to production of IAA. Bacteria synthesized IAA in the range of 18.6 ± 1.1 to 82.4 ± 2.3 µg/ml. IAA was synthesized more actively by Streptosporangium sp. KK1 (44.1 µg/ml), Rhodococcus sp. KK 2 (42.5 µg/ml), Streptomyces tendae KK3 (44.9 µg/ml) strains. The most active auxin's producer is a Jeotgalicoccus halotolerans BAK1 strain, whose total level of IAA production reached 82.4 µg/ml. Such strains as Streptomyces griseorubiginosis KK4, Streptomyces sp. KK5 and Jeotgalicoccus halotolerans BAK1 were found to have a significant stimulating effect which was reflected in the increase of the length of the roots of soybean and barley. As a result, 8 promising strains with fungicidal, growth-stimulating, phosphorus dissolving and enzymatic activities were selected for the further development of highly microbiological preparations for crop research.
Źródło:
Acta Biochimica Polonica; 2016, 63, 2; 321-328
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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