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Иммобилизация биолюминесцентных бактерий на неорганических носителях и оценка их применимости для биотестирования

Иммобилизация биолюминесцентных бактерий на неорганических носителях и оценка их применимости для биотестирования

Abstract

Для проведения биоанализов осуществлена иммобилизация светящихся бактерий Vibrio fischeri F1, Vibrio harveyi Ms1 и Photobacterium phosphoreum F2, выделенных из Черного моря, и бактерии Photobacterium leiog nathi Sh1 — из Азовского моря, на неорганических носителях, в частности на фосфате и карбонате кальция, оксиде и гидроксиде алюминия. Установлено, что при использовании фосфата кальция и гидроксида алюминия наблюдалось уменьшение суммарной интенсивности свечения в среде до 20–70%. В случае применения карбоната кальция и оксида алюминия в качестве сорбентов биолюминесценция возрастала до 120–160% относительно контрольных значений. Последние два носителя выбраны для дальнейших исследований и показано, что максимальный уровень адсорбции на них достигается в течение 2 ч при концентрации бактерий более 2,6·10 8 кл/мл. Бактериальные клетки достаточно прочно удерживаются на сорбентах и не смываются 3%м раствором NaCl, а также сохраняют начальный уровень биолюминесценции в три раза дольше, чем бактериальная суспензия. В адсорбированном и свободном виде светящиеся бактерии проявляют сходную чувствительность к действию токсических факторов, что было показано с использованием хлорида цинка в качестве вещества для тестирования состояния биолюминесцентных систем.

In order to fulfill biotesting it was accomplished the immobilization of bioluminescent bacteria Vibrio fischeri F1, Vibrio harveyi Ms1, Photobacterium phosphoreum F2 and Photobacte rium leiognathi Sh1 isolated from Black and Azov seas on the nonorganic substances, namely: calcium phosphate and carbonate as well as alumina oxide and hydroxide. It was stated that the total intensity of bioluminescence decreased up to 20–70% when calcium phosphate and alumina hydroxide were applied. If calcium carbonate and alumina oxide were used as sorbents, bioluminescence increased up to 120–160% in comparison with the control level. Both last sorbents were chosen for the next investigations and it was demonstrated that the maximal level of bacteria adsorption may be achieved after 2 hours, when their concentration exceeded 2,6·10 8 cells/ml. Bacterial cells are relatively strong fixed and they do not remove under washing with NaCl solution (3%). Similar sensitivity to the influence of toxic substances of adsorbed and free bacteria have been shown. It was demonstrated in the experiments with zinc chloride as traditional test for investigation of bioluminescent systems state.

Keywords

БИОЛЮМИНЕСЦЕНТНЫЕ БАКТЕРИИ, ИММОБИЛИЗАЦИЯ, НЕОРГАНИЧЕСКИЕ НОСИТЕЛИ, ЧУВСТВИТЕЛЬНОСТЬ К ХЛОРИДУ ЦИНКА, БИОСЕНСОРНЫЕ УСТРОЙСТВА, БіОЛЮМіНЕСЦЕНТНі БАКТЕРії, іММОБіЛіЗАЦіЯ, НЕОРГАНіЧНі НОСії, ЧУТЛИВіСТЬ ДО ХЛОРИДУ ЦИНКУ, БіОСЕНСОРНі ПРИСТРОї

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold