Effect of Ice Temperature Technique and SO2 Releaser on Storage of LonganFruits

ACTA HORTICULTURAE SINICA ›› 2006, Vol. 33 ›› Issue (6): 1325-1328.

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Effect of Ice Temperature Technique and SO₂ Releaser on Storage of LonganFruits

Zhang Huiling^{1, 4};Hu Weirong²;Pang Xuequn³;Zhang Zhaoqi¹

(¹Guangdong Key Lab for Postharvest Science of Horticultural Department, South China Agricultural University, Guangzhou, Guangdong 510642, China; ²School of Life Sciences, Guangzhou University, Guangzhou, Guangdong 510006, China; ³ School of Life Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, China;⁴ Institute of Scientific and Technical Information, Guangdong Academy of Agicultural Sciences, Guangzhou, Guangdong 510640, China)

Received:2006-02-22 Revised:2006-05-27 Online:2006-12-25 Published:2006-12-25
Contact: Zhang Zhaoqi

Abstract

Abstract: The freezing point of longan fruits and its affecting factors were determined in four cultivars. The effects of ice temperature ( - 1℃) storage and normal low temperature (3℃) storage and different dosage of SO₂ Releaser on fruit quality were investigated in this paper. The results showed that the freezing points of four cultivars fruits ranged from - 2.04℃ to - 3.49℃, therefore, the suitable ice temperature for the storage of longan fruits was recommended as - 1℃, considering the fluctuation of temperature in practical storage room. There was an obviously negative relationship between the freezing points and TSS content. However, no significant relationship was found between the freezing points and single fruit mass. The pericarp of longan fruits in - 1℃ browned more rapidly than that in 3℃ due to chilling injury, however, the flavor of pulp was as normal as in 3℃. The fruits treated with 0.4% dosage of SO₂ Releaser maintained a higher rate of good fruits and a lower SO₂ residue, compared to the lower rate of good fruits with 0.2% dosage of SO₂ Releaser
and a higher SO₂ residue with 0.6% dosage of SO₂ Releaser.

Key words: Longan, Fruit, Freezing point, Ice temperature storage, SO₂ Releaser

CLC Number:

S667.2

Zhang Huiling;;Hu Weirong;Pang Xuequn;Zhang Zhaoqi. Effect of Ice Temperature Technique and SO₂ Releaser on Storage of LonganFruits[J]. ACTA HORTICULTURAE SINICA, 2006, 33(6): 1325-1328.

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Effect of Ice Temperature Technique and SO₂ Releaser on Storage of LonganFruits

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