Inhibitory Effect of Honeysuckle (Lonicera japonica Thunb.) Extract on the Melanosis and Quality Deterioration of Pacific White Shrimp (Litopenaeus vannamei) During Cold Storage

The effect of Lonicera japonica Thunb. (LJT) extract on melanosis and quality deterioration of Pacific white shrimp (Litopenaeus vannamei) during cold storage was evaluated, using 4-hexylresorcinol (4-HR), a commercial melanosis inhibitor, as a positive control. The results showed that LJT inhibited polyphenol oxidase (PPO) activity and complexed copper ions in a dose-dependent manner (LJT < 16 mg/mL), indicating that LJT has the potential to inhibit shrimp melanization. Visual image and...