FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (20): 439-443.doi: 10.7506/spkx1002-6630-201020093

• Packaging & Storage • Previous Articles     Next Articles

Effect of Chitosan Treatment on Postharvest Quality and Disease Resistance of Navel Orange

LIU Feng,CHEN Ming,CHEN Jin-yin*   

  1. (College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China)
  • Received:2010-03-02 Revised:2010-07-25 Online:2010-10-25 Published:2010-12-29
  • Contact: CHEN Jin-yin E-mail:jinyinchen@126.com

Abstract:

The effects of different concentration chitosan treatments on postharvest quality and disease resistance of Newhall navel orange were studied. The results showed that chitosan treatments inhibited respiration rate, delayed the ascent of total sugar and the descent of titratable acid and resulted in less VC content loss during cold storage (8 ℃), indicating that the quality of chitosan treated fruit is maintained well. Meanwhile, chitosan treatments also maintained the activities of SOD, PAL, chitinase and β-1,3-glucanase of fruits at a higher level during the later storage period and enhances the disease resistance of fruits. Different concentration chitosan treatments had different effects on the postharvest quality and disease resistance of navel orange, and 1.5% chitosan treatment displayed the best effect, followed by 2.0% and 1.0% chitosan treatments.

Key words: chitosan, Newhall navel orange, quality, disease resistance

CLC Number: