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Related Concept Videos

The Availability Heuristic01:08

The Availability Heuristic

A heuristic is a general problem-solving framework (Tversky & Kahneman, 1974). You can think of these as mental shortcuts that are used to solve problems. Different types of heuristics are used in different types of situations, and the impulse to use a heuristic occurs when one of five conditions is met (Pratkanis, 1989):

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Related Experiment Video

Updated: May 12, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

[Not Available].

T Schulz1, K Senkpiel, H Ohgke

  • 1Institut für Medizinische Mikrobiologie und Hygiene der Medizinischen Universität zu Lübeck, Lübeck, Deutschland.

Mycotoxin Research
|April 23, 2013
PubMed
Summary

Two toxicity tests, pollen tube growth test (PTGT) and methylen blue-assay (MB-assay), effectively detect mycotoxins from toxigenic fungi. While useful for screening, exact mycotoxin identification requires advanced methods like HPLC/GC-MS.

Area of Science:

  • Environmental Science
  • Toxicology
  • Mycology

Context:

  • Mycotoxins produced by toxigenic fungi pose health risks in indoor environments.
  • Accurate detection of mycotoxins is crucial for assessing indoor air quality and potential health impacts.
  • Existing detection methods vary in sensitivity, cost, and complexity.

Purpose:

  • To evaluate the sensitivity of two toxicity tests, pollen tube growth test (PTGT) and methylen blue-assay (MB-assay), for detecting mycotoxins.
  • To compare the IC50 values of PTGT and MB-assay across a range of mycotoxins.
  • To determine the suitability of these assays for identifying toxigenic fungal strains in mold-infested dwellings.

Summary:

  • The study assessed the sensitivity of PTGT and MB-assay for detecting mycotoxins, reporting IC50 values in the ranges of 0.01–11.18 μg/ml and 0.003–17.91 μg/ml, respectively.

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  • Both PTGT and MB-assay demonstrated utility in detecting toxigenic fungal wild strains commonly found in mold-infested apartments.
  • However, precise identification and quantification of specific mycotoxins necessitate advanced analytical techniques such as immunochemical methods or HPLC/GC-MS.

    • Impact:

    • Provides data on the efficacy of PTGT and MB-assay for preliminary mycotoxin screening in indoor environments.
    • Highlights the limitations of these assays for definitive mycotoxin identification, guiding users towards appropriate confirmatory methods.
    • Contributes to understanding mycotoxin detection strategies for improving indoor air quality and public health.