Chromium(VI) bioremediation by probiotics.

Area of Science:

• Environmental Science
• Microbiology
• Toxicology

Background:

• Hexavalent chromium (Cr(VI)) is an environmental contaminant from industrial sources, posing health risks through contaminated food and water.
• Cr(VI) exposure can lead to severe diseases and is a significant environmental health concern.
• Microorganisms possess resistance mechanisms and can bind heavy metals, mitigating their toxic effects.

Purpose of the Study:

• To review the toxic effects of hexavalent chromium (Cr(VI)) on animals and humans.
• To explore the potential of probiotics in mitigating or preventing Cr(VI) toxicity.
• To identify microorganisms that can act as bioprotectants against Cr(VI) exposure.

Main Methods:

• Literature review on Cr(VI) toxicity and microbial detoxification.
• Analysis of studies involving probiotic species like Lactobacillus, Streptococcus, Bacillus, and Bifidobacterium.
• Examination of microbial mechanisms for binding and sequestering heavy metals.

Main Results:

• Certain probiotic bacteria, including Lactobacillus and Bifidobacterium, demonstrate the ability to bind and detoxify Cr(VI).
• These microorganisms can sequester Cr(VI) from the cell surface, aiding in its removal.
• Probiotics offer a potential strategy for mitigating Cr(VI) poisoning.

Conclusions:

• Probiotics show promise as a safe and affordable method to counteract hexavalent chromium toxicity in humans and animals.
• Further research into the genetic basis of microbial bioprotection against Cr(VI) is warranted.
• Microbial detoxification represents a valuable approach to environmental remediation and public health.