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Food Qual Safet
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A novel mitigator of enzymatic browning—hawthorn leaf extract and its application in the preservation of fresh-cut potatoes
A novel mitigator of enzymatic browning—hawthorn leaf extract and its application in the preservation of fresh-cut potatoes
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摘要:
Objectives

The purpose of this study was to evaluate the antibrowning functions of hawthorn leaf extract on fresh-cut potato and its possible mechanism.

Materials and Methods

Fresh-cut potatoes were treated with different concentrations (0.01%, 0.05%, and 0.1%) of hawthorn leaf extract and preserved at 4 ℃ for 8 days. The appearance and colour of potato slices were evaluated, along with the content of the phenol, malondialdehyde (MDA), and hydrogen peroxide (H2O2) during cold storage. Meanwhile, the activities of polyphenol oxidase (PPO), peroxidase (POD), phenylalanine ammonia-lyase (PAL), lipoxygenase (LOX), catalase (CAT), superoxide dismutase (SOD), and the antioxidant capacity were determined. Furthermore, the composition of hawthorn leaf extract was analyzed by high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS).

Results

The addition of hawthorn leaf extract effectively delayed the browning process. It not only enhanced the CAT activity and antioxidant capacity but also reduced the LOX activity and accumulation of MDA and H2O2. Meanwhile, the activities of PPO, POD, and PAL as well as the content of phenol were controlled. Additionally, 25 phenols, 34 flavonoids, and 5 proanthocyanidins were identified through high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS), including caffeic acid, quercetin and catechol.

Conclusion

Hawthorn leaf extract significantly alleviated the browning of fresh-cut potato. It could serve as a natural antibrowning alternative by stabilizing the membrane and modulating reactive oxygen species and redox reactions.

关键词: Hawthorn leaf extractenzymatic browningfresh-cut potatoes    
Abstract:
Objectives

The purpose of this study was to evaluate the antibrowning functions of hawthorn leaf extract on fresh-cut potato and its possible mechanism.

Materials and Methods

Fresh-cut potatoes were treated with different concentrations (0.01%, 0.05%, and 0.1%) of hawthorn leaf extract and preserved at 4 ℃ for 8 days. The appearance and colour of potato slices were evaluated, along with the content of the phenol, malondialdehyde (MDA), and hydrogen peroxide (H2O2) during cold storage. Meanwhile, the activities of polyphenol oxidase (PPO), peroxidase (POD), phenylalanine ammonia-lyase (PAL), lipoxygenase (LOX), catalase (CAT), superoxide dismutase (SOD), and the antioxidant capacity were determined. Furthermore, the composition of hawthorn leaf extract was analyzed by high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS).

Results

The addition of hawthorn leaf extract effectively delayed the browning process. It not only enhanced the CAT activity and antioxidant capacity but also reduced the LOX activity and accumulation of MDA and H2O2. Meanwhile, the activities of PPO, POD, and PAL as well as the content of phenol were controlled. Additionally, 25 phenols, 34 flavonoids, and 5 proanthocyanidins were identified through high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS), including caffeic acid, quercetin and catechol.

Conclusion

Hawthorn leaf extract significantly alleviated the browning of fresh-cut potato. It could serve as a natural antibrowning alternative by stabilizing the membrane and modulating reactive oxygen species and redox reactions.

Key words: Hawthorn leaf extract    enzymatic browning    fresh-cut potatoes
出版日期: 2021-07-19
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乔丽萍
王海林
邵金升
路来风
田金虎
刘霞

引用本文:

乔丽萍, 王海林, 邵金升, 路来风, 田金虎, 刘霞. A novel mitigator of enzymatic browning—hawthorn leaf extract and its application in the preservation of fresh-cut potatoes. Food Qual Safet, 10.1093/fqsafe/fyab015.

链接本文:

http://www.zjujournals.com/fqs/CN/10.1093/fqsafe/fyab015        http://www.zjujournals.com/fqs/CN/Y2021/V5/I1/1

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