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Glutathiones antioxidant property allows it to inhibit melanin synthesis by quenching free radicals and peroxides that contribute to tyrosinase activation and melanin formation

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Ebbehoj J

The S-acetyl molecule bound to glutathione protects glutathione from breaking down in the gastrointestinal tract, so it reaches the bloodstream intact

The ability of supplemented GSH to protect against adverse osmotic conditions could be harnessed in cheese industry, where salting of curd blocks impart high osmotic stress to the starter bacteria and thus addition of glutathione to cheese milk or use of GSH accumulating or producing starters could offer protection resulting in shorter ripening time