食品科学 ›› 2009, Vol. 30 ›› Issue (20): 455-458.doi: 10.7506/spkx1002-6300-200920103

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采前水杨酸处理对红肉脐橙采收时和贮藏期抗氧化活性的影响

黄仁华1,2,陆云梅1,2,夏仁学2,*   

  1. 1.西南科技大学生命科学与工程学院 2.华中农业大学 园艺植物生物学教育部重点实验室
  • 收稿日期:2008-11-14 修回日期:2009-07-26 出版日期:2009-10-15 发布日期:2010-12-29
  • 通讯作者: 黄仁华 E-mail:huangrenhua@swust.edu.cn
  • 基金资助:

    科技部科技促进三峡移民开发专项(2004EP090019);西南科技大学博士启动基金项目(08zx7104)

Effect of Pre-Harvest Salicylic Acid Spray Treatment on Antioxidant Activity Citrus sinenisis  Osbesk during Storage

HUANG Ren-hua1,2,LU Yun-mei1,2,XIA Ren-xue2,*   

  1. 1. College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China ;
    2. Key Laboratory of Horticulture Plant Biology, Ministry of Education, Huazhong Agricultural University,Wuhan 430070, China
  • Received:2008-11-14 Revised:2009-07-26 Online:2009-10-15 Published:2010-12-29
  • Contact: HUANG Ren-hua E-mail:huangrenhua@swust.edu.cn

摘要:

以红肉脐橙果实为材料,研究不同浓度水杨酸(SA)采前处理对其贮藏期果肉抗氧化活性的影响。结果表明:不同浓度SA处理增加了果实采收时抗氧化成分(番茄红素、β-胡萝卜素、总酚和类黄酮)含量和体外抗氧化活性(FRAP值),且在实验浓度范围内处理浓度越高效果越明显。果实贮藏以后,番茄红素、β-胡萝卜素含量持续下降,而总酚和类黄酮含量呈上升变化趋势,采前SA处理能显著增加果实贮藏期间上述抗氧化成分的含量,且以2.0mmol/L SA处理的效果最好;此外,体外抗氧化活性先增加后降低,最大值出现在贮藏45d,贮藏结束时(105d),0.5、1.0、2.0mmol/L SA处理的果实体外抗氧化活性显著高于对照。

关键词: 红肉脐橙, 水杨酸, 采前处理, 贮藏, 抗氧化活性

Abstract:

Cara cara navel orange (Citrus sinenisis L.‘Cara cara’) was used to investigate effect of pre- harvest salicylic acid (SA) spray treatment on antioxidant activity in pulps at harvest stage and during storage. Results indicated that SA spray treatment significantly increased the content of antioxidant components (lycopene, β-carotene, total phenols and flavonoids) and antioxidant capability (FRAP value) at harvest stage of fruits. Moreover, these effects were in a concentration-dependent manner. During fruit storage, the contents of lycopene and β-carotene exhibited a decrease, whereas total phenols and flavonoids exhibited a constant increase. However, fruits subjected to SA spray treatment before harvest were observed a significant increase of antioxidant components during storage period and the optimal concentration of SA for pre-harvest treatment was 2.0 mmol/L. The antioxidant activity revealed an initial increase and final decrease. The peak of antioxidant activity was observed at 45 d of storage. Furthermore, FRAP value in fruits with 0.5, 1.0 and 2.0 mmol/L SA pre-harvest treatment was significantly higher than that in control fruits.

Key words: Cara cara navel orange, salicylic acid, pre-harvest treatment, storage, antioxidant activity

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