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Ergothioneine: new functional factor in fermented foods.

Kexin Xiong1, Siyu Xue1, Hui Guo1

  • 1School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, China.

Critical Reviews in Food Science and Nutrition
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Summary

Ergothioneine (EGT), a potent antioxidant amino acid, faces production challenges. This review explores its applications and methods to enhance EGT yield through microbial biosynthesis and genetic engineering.

Keywords:
Ergothioneineapplicationbiosynthetic pathwayfermentationmetabolic engineeringphysiological function

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Area of Science:

  • Biochemistry
  • Microbiology
  • Biotechnology

Background:

  • Ergothioneine (EGT) is a natural sulfur-containing amino acid with significant antioxidant and cytoprotective properties.
  • EGT finds widespread application in food, functional food, cosmetics, and medicine.
  • Low yield remains a critical challenge for industrial EGT production.

Purpose of the Study:

  • To review the biological activities and diverse applications of EGT.
  • To compare various microbial production methods and biosynthetic pathways for EGT.
  • To discuss strategies for improving EGT yield using genetic and metabolic engineering.

Main Methods:

  • Literature review of EGT's biological activities and applications.
  • Analysis of microbial biosynthetic pathways for EGT production.
  • Evaluation of genetic and metabolic engineering techniques for yield enhancement.

Main Results:

  • EGT exhibits potent antioxidant and cytoprotective effects, driving its use in multiple industries.
  • Various microorganisms possess distinct biosynthetic pathways for EGT.
  • Genetic and metabolic engineering offer promising avenues for increasing EGT production efficiency.

Conclusions:

  • Improving EGT yield is crucial for meeting industrial demand.
  • Microbial fermentation, enhanced by genetic engineering, is a key strategy for sustainable EGT production.
  • Incorporating EGT-producing strains into fermented foods can introduce novel functional benefits.