Inhibitory Effects of Pre-harvest Spraying Diethyl Aminoethyl Hexanoate on the Disease Occurrence in Longan Fruit during Postharvest Storage and Its Mechanism

LIN Yixiong; LIN Yifen; CHEN Lian; LI Hui; LIN Hetong

doi:10.13386/j.issn1002-0306.2021120120

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May. 2023

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JOURNAL OF MECHANICAL ENGINEERING > 2023 > 44(9): 346-353.

LIN Yixiong, LIN Yifen, CHEN Lian, et al. Inhibitory Effects of Pre-harvest Spraying Diethyl Aminoethyl Hexanoate on the Disease Occurrence in Longan Fruit during Postharvest Storage and Its Mechanism[J]. Science and Technology of Food Industry, 2023, 44(9): 346−353. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2021120120

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Inhibitory Effects of Pre-harvest Spraying Diethyl Aminoethyl Hexanoate on the Disease Occurrence in Longan Fruit during Postharvest Storage and Its Mechanism

doi: 10.13386/j.issn1002-0306.2021120120

LIN Yixiong^{1, 2, 3
,},
LIN Yifen^{2, 3, 4},
CHEN Lian¹,
LI Hui¹,
LIN Hetong^{2, 3, 4,*
,
,}

1.
School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, China
2.
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
3.
Key Laboratory of Postharvest Biology of Subtropical Special Agricultural Products (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 350002, China
4.
Institute of Postharvest Technology of Agricultural Products, Fujian Agriculture and Forestry University, Fuzhou 350002, China

Received Date: 13 Dec 2021
Issue Publish Date: 01 May 2023

Abstract

Abstract

In order to elucidate the influences of pre-harvest spraying diethyl aminoethyl hexanoate (DA-6) on the disease occurrence in longan fruit during postharvest storage and its possible mechanism, fruit of ‘Fuyan’ longan at 70, 90 and 110 days after full bloom was sprayed with DA-6 solution at the concentration of 10 mg/kg, and the fruit sprayed with distilled water served as control. The harvested longan fruit were stored at (28±1) ºC. During storage, the index of longan fruit disease, the contents of lignin and total phenolics, the activities of phenylalnine ammonia-lyase (PAL), polyphenol oxidase (PPO), peroxidase (POD), chitinase (CHI) and β-1,3-glucanase (GLU) in longan pericarp were evaluated. When stored for 6 d, the fruit disease index in 10 mg/kg DA-6-treated longan was 11.59% lower than control longans. The results also indicated that, contrasted to the control samples, during postharvest storage, pre-harvest spraying DA-6 could lower index of fruit disease, reduce activities of PPO and POD, but retain higher activities of PAL, CHI and GLU, as well as maintain higher levels of lignin and total phenolics. These findings suggested that pre-harvest spraying DA-6 could effectively suppress disease development of postharvest longan fruit, which was due to DA-6 induced-the enhanced activities of disease resistance related-enzymes and the reduced activities of phenols oxidation related-enzymes, the increased levels of disease-resistant substances, and then the enhanced disease resistance.
- longan fruit,
- disease index,
- lignin,
- total phenolics,
- disease resistance-related enzymes,
- diethyl aminoethyl hexanoate,
- pre-harvest spraying

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References(32)

References

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Inhibitory Effects of Pre-harvest Spraying Diethyl Aminoethyl Hexanoate on the Disease Occurrence in Longan Fruit during Postharvest Storage and Its Mechanism

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Inhibitory Effects of Pre-harvest Spraying Diethyl Aminoethyl Hexanoate on the Disease Occurrence in Longan Fruit during Postharvest Storage and Its Mechanism

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