Inhibitory effect of kojic acid on polyphenol oxidase from jackfruit and its antibacterial experiment

The inhibitory effect and mechanism of kojic acid on polyphenol oxidase ( PPO) from jackfruit were studied by enzyme kinetics and Lineweaver- Burk plots.The antibacterial effect of kojic acid on jackfruit bulbs was tested by plate counting. The results showed that kojic acid significantly inhibited the enzyme activity, with an IC50of0.297 mmol / L.Kojic acid was a reversible non- competitive inhibitor, with the Kiof 0.296 mmol / L. Jackfruit bulbs dipped in 0.10% kojic acid showed good antibacterial effect within 6d.