Plant Foods for Human Nutrition

, Volume 68, Issue 2, pp 113–117

Pre-harvest Methyl Jasmonate Treatment Enhances Cauliflower Chemoprotective Attributes Without a Loss in Postharvest Quality

  • Kang Mo Ku
  • Jeong-Hee Choi
  • Mosbah M. Kushad
  • Elizabeth H. Jeffery
  • John A. Juvik
Original Paper


Methyl jasmonate (MeJA) treatment can significantly increase glucosinolate (GS) concentrations in Brassica vegetables and potentially enhance anticancer bioactivity. Although MeJA treatment may promote ethylene biosynthesis, which can be detrimental to postharvest quality, there are no previous reports of its effect on cauliflower postharvest quality. To address this, cauliflower curds in field plots were sprayed with either 0.1 % Triton X-100 (control) or 500 μM MeJA solutions four days prior to harvest, then stored at 4 °C. Tissue subsamples were collected after 0, 10, 20, and 30 days of postharvest storage and assayed for visual color change, ethylene production, GS concentrations, and extract quinone reductase inductive activity. MeJA treatment increased curd GS concentrations of glucoraphanin, glucobrassicin, and neoglucobrassicin by 1.5, 2.4, and 4.6-fold over controls, respectively. MeJA treated cauliflower showed significantly higher quinone reductase activity, a biomarker for anticancer bioactivity, without reducing visual color and postharvest quality for 10 days at 4 °C storage.


Brassica oleracea L. Methyl jasmonate Quinone reductase activity Postharvest storage Glucosinolates 


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Kang Mo Ku
    • 1
  • Jeong-Hee Choi
    • 1
    • 3
  • Mosbah M. Kushad
    • 1
  • Elizabeth H. Jeffery
    • 2
  • John A. Juvik
    • 1
  1. 1.Department of Crop SciencesUniversity of Illinois at Urbana-ChampaignUrbanaUSA
  2. 2.Department of Food Science and Human NutritionUniversity of Illinois at Urbana-ChampaignUrbanaUSA
  3. 3.Korea Food Research InstituteGyeonggi-DoSouth Korea

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