Effect of germination on vomitoxin level in grain

Area of Science:

• Agricultural Science
• Mycotoxicology
• Food Science

Background:

• Vomitoxin (deoxynivalenol) is a harmful mycotoxin contaminating cereal grains.
• Grain germination can produce enzymes and substances that may degrade mycotoxins.
• The efficacy of germination in reducing vomitoxin levels in contaminated grains requires further investigation.

Purpose of the Study:

• To investigate the impact of germination on vomitoxin levels in contaminated oats.
• To assess the potential of germination as a method for decontaminating grains with vomitoxin.

Main Methods:

• Comparing vomitoxin reduction in pure vomitoxin-treated grains (barley, oats, wheat) during germination.
• Analyzing vomitoxin levels in homogenized mixtures of germinated and toxic grains.
• Evaluating vomitoxin changes in a mixture of germinating toxin-free and toxic oats.

Main Results:

• Oats contaminated with vomitoxin exhibited poor germination and only slight toxin reduction.
• Pure vomitoxin added to toxin-free grains decreased during germination (barley 53%, oats 40%, wheat 20%).
• No significant vomitoxin decrease was observed in homogenized mixtures of germinated and toxic grains.
• In mixed grain cultures, vomitoxin initially decreased but later increased significantly.

Conclusions:

• Germination's effectiveness in reducing vomitoxin in contaminated oats is limited and potentially unreliable.
• The complex interactions during germination and in mixed grain systems complicate mycotoxin degradation.
• Using germination processes to improve vomitoxin-contaminated grain quality is of questionable value.