Abstract
The effect of hydrogen sulfide (H2 S) on the inhibition of the surface whitening of fresh-cut carrots was investigated. Whitening index; H2 O2 and malondialdehyde (MDA) contents; activities of catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), phenylalanine ammonia lyase (PAL), polyphenol oxidase (PPO) and peroxidase (POD); and antioxidant capacities were evaluated. H2 S treatment significantly inhibited the surface whitening of fresh-cut carrots (P<0.05), reduced the accumulation of H2 O2 and MDA, and enhanced antioxidant enzymes (CAT, APX and GR) activities and antioxidant capacities (P<0.05). The PAL, PPO and POD activities of fresh-cut carrots were inhibited by treatment with H2 S (P<0.05). Furthermore, correlation analysis revealed that whitening index was significantly positively correlated with H2 O2 content, lipid peroxidation, PPO and POD activities. H2 S inhibited the surface whitening of fresh-cut carrots by reducing H2 O2 accumulation and lipid peroxidation, and also inhibited PPO and POD activities. © 2018 Society of Chemical Industry.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call