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Open AccessArticle

The Combination of Hot Air and Chitosan Treatments on Phytochemical Changes during Postharvest Storage of ‘Sanhua’ Plum Fruits

1
Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Key Laboratory of South Subtropical Fruit Biology and Genetics Resource Utilization, Ministry of Agriculture, Guangdong Province Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
2
School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
3
Department of Wine, Food Molecular Biosciences, Lincoln University, Lincoln 7647, New Zealand
*
Author to whom correspondence should be addressed.
Foods 2019, 8(8), 338; https://doi.org/10.3390/foods8080338
Received: 28 June 2019 / Revised: 5 August 2019 / Accepted: 8 August 2019 / Published: 12 August 2019
Plum fruits would become putrid quickly after harvest. In order to prolong postharvest life, ‘Sanhua’ plum fruits were treated by hot air combined with a chitosan coating, and stored at low temperature. Fruit firmness, total soluble solids, total phytochemical contents were evaluated along with total antioxidant activities and phytochemical components. Results showed that hot air treatment delayed softening process of plum fruit. The total phenolics and flavonoids accumulated and antioxidant activities increased in both control and treatment samples during storage. These values in the samples treated with hot air and chitosan were all higher than control and hot air treatments. Phytochemicals of epicatechin, cyanidin, pelargonidin, and hesperetin were all upregulated by hot air and chitosan treatment, especially epicatechin. This suggested that chitosan might play an important role in regulating phytochemical profiles of ‘Sanhua’ plum fruits during storage. View Full-Text
Keywords: plum fruits; heat treatment; chitosan; phytochemicals; antioxidant activity plum fruits; heat treatment; chitosan; phytochemicals; antioxidant activity
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MDPI and ACS Style

Chang, X.; Lu, Y.; Li, Q.; Lin, Z.; Qiu, J.; Peng, C.; Brennan, C.S.; Guo, X. The Combination of Hot Air and Chitosan Treatments on Phytochemical Changes during Postharvest Storage of ‘Sanhua’ Plum Fruits. Foods 2019, 8, 338.

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