Effects of Different Zn²⁺ Concentrations and High Hydrostatic Pressures (HHP) on Chlorophyll Stability.

ABSTRACT: This study provides a new idea for improving chlorophyll stability and color quality of green leafy vegetables by Zn²⁺ synergistic HHP. Zn-chlorophyll was prepared with zinc acetate and chlorophyll under HHP treatment. The effects of different zinc acetate concentrations and pressures on chlorophyll color, antioxidant activity, Zn²⁺ replacement rate, structure, and thermal stability were analyzed. Results showed with increased zinc acetate concentration and pressure, -a* value, antioxidant activity, and Zn²⁺ replacement rate of samples gradually increased. However, FTIR indicated the structure did not change. HHP fluorescence online analysis showed fluorescence intensity of samples decreased with zinc acetate concentration and pressure increasing. With zinc

SUBMITTER: Hu Y 

PROVIDER: S-EPMC9316298 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature