kojic acid

Kojic acid is a fungal metabolite that inhibits tyrosinase, an enzyme involved in melanin synthesis, with an IC50 value of 30.6 μM for mushroom tyrosinase.

Kojic acid (Standard) is the standard substance of Kojic acid, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Kojic acid is a fungal metabolite that inhibits tyrosinase, an enzyme involved in melanin synthesis, with an IC50 value of 30.6 μM for mushroom tyrosinase.

Kojic acid dipalmitate (Standard) is the standard substance of Kojic acid dipalmitate, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments.

Tyrosinase-IN-35 (compound 6g), exhibiting a IC 50 value of 2.09 μM, serves as a more effective inhibitor of human tyrosinase compared to Kojic Acid (IC 50: 16.38 μM). At concentrations of 4 μM and 8 μM, this compound effectively lowers melanin levels in melanoma B16F10 cells in vitro.

Tyrosinase-IN-37 (Compound 3c) is a potent inhibitor of tyrosinase, with an IC50 value of 1.02 μM, which is 14 times more effective than kojic acid (IC50 of 14.74 μM). This compound effectively prevents the browning of Rosa roxburghii and can also inhibit browning not caused by tyrosinase.

Tyrosinase-IN-36 is a moderately potent inhibitor of tyrosine, exhibiting an inhibition percentage of 42.75% compared to kojic acid at a concentration of 100 μM and possesses antioxidant activity.

Dioctatin A hydrochloride is a metabolite of Streptomyces and acts as an inhibitor of human dipeptidyl aminopeptidase II. It curtails aflatoxin production in Aspergillus parasiticus with an IC50 of 0.4 μM. The compound reduces the mRNA levels of genes associated with aflatoxin biosynthesis and the regulatory gene aflR, inhibits conidiation, and decreases the mRNA levels of the brlA gene, while also promoting kojic acid production. Additionally, Dioctatin A hydrochloride inhibits the production of sterigmatocystin. It exerts multifaceted regulatory effects on the production and differentiation of fungal secondary metabolites.

Oxyresveratrol-2-O-beta-D-glucopyranoside shows better tyrosinase inhibitory activities than kojic acid.

Steppogenin exhibits significant tyrosinase inhibition activity, ;it also shows strong mushroom tyrosinase inhibitory activity with IC(50) values lower than 50 microM, more potent than kojic acid (IC(50) = 71.6 microM), a well-known tyrosinase inhibitor.