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

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壳聚糖处理对脐橙采后品质及抗病性的影响

刘 锋,陈 明,陈金印*   

  1. 江西农业大学农学院
  • 收稿日期:2010-03-02 修回日期:2010-07-25 出版日期:2010-10-25 发布日期:2010-12-29
  • 通讯作者: 陈金印 E-mail:jinyinchen@126.com
  • 基金资助:

    江西省自然科学基金项目(0630059);江西省主要学科学术和技术带头人培养计划项目(050007)

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

摘要:

研究不同质量浓度壳聚糖处理对纽荷尔脐橙采后品质及抗病性的影响。结果表明:在冷藏(8℃)条件下,壳聚糖处理抑制了脐橙果实的呼吸强度、延缓了总糖的上升和可滴定酸的下降并保持了较高的VC 含量,从而保持了较好的果实品质。同时,在贮藏后期壳聚糖处理也提高了脐橙果实超氧化物歧化酶、苯丙氨酸解氨酶、几丁质酶和β-1,3- 葡聚糖酶的活性,增强了果实的抗病性。但不同处理间存在着差异,其中以1.5g/100mL 壳聚糖效果最好,2.0g/100mL 壳聚糖次之,1.0g/100mL 壳聚糖最差。

关键词: 壳聚糖, 纽荷尔脐橙, 品质, 抗病性

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

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