Effects of different pH, temperature, and pressurisation time on the stability of chlorophylls treated with Zn2+ and high hydrostatic pressure

文献类型： 外文期刊

第一作者： Sun, Hongnan

作者： Sun, Hongnan;Mu, Taihua

作者机构：

关键词： Aggregation; antioxidant activity; chlorophyll fluorescence; thermal stability; Zn2+ replacement ratio

期刊名称：INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY （ 影响因子：3.3； 五年影响因子：3.5 ）

ISSN： 0950-5423

年卷期： 2023 年 58 卷 9 期

页码：

收录情况： SCI

摘要： This study provides an effective method to improve the stability of chlorophylls. The effects of different pH, temperature, and pressurisation time on the colour, antioxidant activity, Zn2+ replacement ratio, structure, and thermal stability of chlorophylls treated with Zn2+ (10 mg 100 mL(-1)) and high hydrostatic pressure (500 MPa) were investigated. The electronic eye, ultraviolet spectrophotometer, high-performance liquid chromatography, Fourier transform infrared, and high hydrostatic pressure (HHP) online monitor cooperated with fluorescence spectrophotometer were used to investigate the effects of different pH values, water bath temperatures, and pressurisation time on the colour, antioxidant activity, Zn2+ replacement ratio, and structure of chlorophylls. The highest -a* (6.92), antioxidant activity (ABTS 41.01 g ACE 100 g(-1), DPPH 52.86 g ACE 100 g(-1), FRAP 35.72 g TE 100 g(-1) DW), and Zn2+ replacement ratio (47.32%) were obtained at 50 degrees C, pH = 7.0, and 20 min. It is hoped that this study will provide a new idea for the protection of natural pigments.

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