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相关概念视频

Microbial Growth Measurement: Direct Methods01:23

Microbial Growth Measurement: Direct Methods

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,...
Microbial Growth Measurement: Indirect Methods01:27

Microbial Growth Measurement: Indirect Methods

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...
Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
Methods for Controlling Microbial Growth01:29

Methods for Controlling Microbial Growth

1
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...
1
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches01:23

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

120
Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
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Quantification of the Potential Impact of Glyphosate-Based Products on Microbiomes
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Q4MRATools:微生物风险评估的定量工具

Olga María Bonilla Luque1, Antonio Valero1, Arícia Possas1

  • 1Department of Food Science and Technology, UIC Zoonosis y Enfermedades Emergentes (ENZOEM), CeiA3 Universidad de Córdoba Córdoba Spain.

EFSA journal. European Food Safety Authority
|December 23, 2024
PubMed
概括

该项目通过对定量微生物风险评估 (QMRA) 和预测微生物学工具的培训,提高了食品安全. 目标是提高评估食品传播病原体风险的准确性.

关键词:
李斯特里亚单细胞原生菌 (Listeria monocytogenes) 是一种风险曝光评估 风险曝光评估发酵产品是发酵产品中的一种.食品安全 食品安全它们的pH值为pH.预测性微生物学 预测性微生物学风险分析 风险分析

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科学领域:

  • 食品安全科学 食品安全科学
  • 微生物学 微生物学
  • 风险评估 风险评估

背景情况:

  • 欧洲食品风险评估 (EU-FORA) 奖学金计划旨在加强食品安全系统.
  • 定量微生物风险评估 (QMRA) 对于有效的食品安全评估至关重要.
  • 对于现代风险评估来说,先进的计算工具越来越重要.

研究的目的:

  • 为奖学金获得者提供QMRA基础培训.
  • 提高预测微生物学,实验设计和专业软件方面的技能.
  • 为开发更准确,更强大的食品安全评估做出贡献.

主要方法:

  • 预测微生物学培训,包括生长和非活化模型.
  • 关于微生物学研究实验设计原则的说明.
  • 通过实践应用R,MATLAB,@Risk,DMFit和GInaFiT等软件工具.

主要成果:

  • 获得QMRA和预测微生物学方面的基本知识.
  • 在利用先进的软件进行微生物风险评估时获得的熟练程度.
  • 扩大能力超越定性方法,包括定量方法.

结论:

  • 该培训为该研究员提供了必要的QMRA技能,以改善食品安全评估.
  • 增强对各种食物矩阵和条件中的微生物行为的理解.
  • 该项目支持开发更有效,数据驱动的食品安全战略.