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Related Experiment Videos

[Isolated water in desiccated microorganisms].

S I Aksenov, S N Goriachev, F B Sherman

    Mikrobiologiia
    |May 1, 1978
    PubMed
    Summary

    Isolated mobile water, crucial for dehydrated yeast survival, has been chemically confirmed. This water is preserved by altered membrane permeability and released upon heating, destroying cellular structures.

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    Mikrobiologiia·2002

    Area of Science:

    • Microbiology
    • Biophysics

    Context:

    • Dehydrated eukaryotic microorganisms can retain intracellular mobile water.
    • Previous studies utilized Nuclear Magnetic Resonance (NMR) to detect this water.
    • The specific mechanisms of water preservation in dehydrated cells remain under investigation.

    Purpose:

    • To confirm the presence of isolated mobile water in dehydrated yeast using direct chemical registration.
    • To quantify the amount of this mobile water within the dry biomass.
    • To elucidate the potential mechanisms behind water preservation during dehydration.

    Summary:

    • Direct chemical registration confirmed isolated mobile water in dehydrated yeast (Cryptococcus albidus), previously identified by NMR.
    • This water comprises several percent of the dry biomass and is preserved due to altered intracellular membrane permeability during dehydration.
    • The mobile water is released and its cellular structures destroyed when yeast cells are heated to 150-200°C.

    Impact:

    • Provides direct chemical evidence for mobile water in dehydrated microorganisms.
    • Suggests altered membrane permeability is key to cellular water preservation during dehydration.
    • Offers insights into the stability and release mechanisms of intracellular water in extremophiles.

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