Abstract
Oxalic acid has a strong antibrowning activity. The inhibitory pattern on catechol-PPO model system appeared to be competitive, with a K(i) value of 2.0 mM. When the PPO was incubated with oxalic acid, the activity was not recovered via dialysis, but the inactivated enzyme partially recovered its activity when cupric ion was added. Comparing the relative antibrowning effectiveness of oxalic acid with other common antibrowning agents, oxalic acid with I50 value of 1.1 mM is as effective as kojic acid and more potent than cysteine and glutathione.
| Original language | English |
|---|---|
| Pages (from-to) | 2071-2074 |
| Number of pages | 4 |
| Journal | Journal of Agricultural and Food Chemistry |
| Volume | 48 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2000 |
Keywords
- Enzymatic browning
- Inhibition
- Kinetic study
- Oxalic acid
- Polyphenol oxidase
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