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Methods for Controlling Microbial Growth01:29

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Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
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Microorganisms are classified as acidophiles, neutrophiles, or alkaliphiles based on their pH growth preferences, reflecting their adaptations to specific environments. Maintaining a stable intracellular pH is critical for macromolecular stability and enzymatic activity, which can be challenged by external pH variations.Neutrophiles, such as Escherichia coli, grow optimally between pH 5.5 and 8.0. These microorganisms inhabit neutral or slightly acidic environments and employ mechanisms like...
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Microbial Growth Measurement: Direct Methods01:23

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Direct methods for measuring microbial populations in a culture are essential tools in microbiology, providing quantitative data for various applications. Among these, microscopic counts, plate counts, and serial dilution are widely used techniques, each with unique principles and applications.Microscopic CountsMicroscopic counting involves the use of a Petroff-Hausser chamber, a specialized microscope slide with a grid and defined depth. By observing a liquid culture under a microscope,...
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Microbial Growth Measurement: Indirect Methods01:27

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Estimating microbial growth is essential for understanding population dynamics and environmental adaptations. Indirect methods provide valuable insights by measuring parameters such as turbidity, metabolic activity, and biomass, enabling efficient and reproducible assessments.During exponential growth, microbial cells scatter light proportionally to their biomass, a principle used in turbidity measurements. About one million cells per milliliter produce detectable scattering, which a...
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Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
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Updated: Jan 24, 2026

Methods for Facilitating Microbial Growth on Pulp Mill Waste Streams and Characterization of the Biodegradation Potential of Cultured Microbes
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Un modelo fundacional para la dinámica del crecimiento microbiano

Zachary A Holmes, Irida Shyti, Alexandra L Hoffman

    bioRxiv : the preprint server for biology
    |January 23, 2026
    PubMed
    Resumen
    Este resumen es generado por máquina.

    Los investigadores desarrollaron un modelo fundacional para la dinámica del crecimiento microbiano, aprendiendo representaciones transferibles a partir de datos diversos. Esto permite predicciones precisas y aprendizaje de pocas muestras para diversas aplicaciones en ciencias microbianas.

    Palabras clave:
    dinámica del crecimiento microbianomodelo fundacionalaprendizaje de pocas muestrasingeniería del microbiomapruebas de antibióticosbiología computacionalbiología de sistemas

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    Área de la Ciencia:

    • Microbiología
    • Biología Computacional
    • Biología de Sistemas

    Sus antecedentes:

    • La dinámica del crecimiento microbiano ofrece información valiosa para aplicaciones como las pruebas de antibióticos y la ingeniería del microbioma.
    • La alta dimensionalidad de los datos de crecimiento y los conjuntos de datos limitados dificultan la modelización generalizable.
    • Los métodos existentes tienen dificultades con sistemas y contextos microbianos diversos.

    Objetivo del estudio:

    • Desarrollar un modelo fundacional para la dinámica del crecimiento microbiano.
    • Aprender representaciones transferibles y de baja dimensión a partir de datos de crecimiento diversos.
    • Mejorar el rendimiento predictivo en aplicaciones de análisis microbiano posteriores.

    Principales métodos:

    • Se entrenó un modelo de representación a gran escala y autosupervisado con aproximadamente 370.000 curvas de crecimiento microbiano experimentales y simuladas.
    • Se utilizaron diversas especies microbianas, condiciones ambientales y contextos comunitarios para el entrenamiento.
    • Se aprendieron incrustaciones latentes para capturar características dinámicas esenciales y permitir la reconstrucción de datos.

    Principales resultados:

    • El modelo aprendió incrustaciones latentes concisas que reconstruyen con precisión los datos brutos de crecimiento microbiano.
    • Se logró el aprendizaje de pocas muestras para la clasificación de antibióticos y la predicción de concentración.
    • Se demostró una predicción precisa de las comunidades microbianas y la inferencia de la abundancia total a partir de datos de abundancia relativa.

    Conclusiones:

    • El modelo fundacional proporciona un marco general para analizar y predecir la dinámica de las comunidades microbianas.
    • Las representaciones transferibles extraídas de conjuntos de datos heterogéneos mejoran el análisis con mediciones limitadas.
    • Permite predicciones robustas en diversos sistemas y aplicaciones microbianas.