A poly(vinyl alcohol) (PVA)-degrading mixed culture that consisted of sereval microorganisms was obtained from activated sludge from a textile factory. From the culture, a component bacterial strain, BX1, that degraded PVA was isolated, and was identified as Bacillus megaterium. This strain could degrade PVA only in the cocultivation with a bacterial strain, PN19, that was isolated from the same mixed culture.
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Mori et al. (1996) studied this question.