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

Authors

  • Kang Mo Ku
    • Department of Crop SciencesUniversity of Illinois at Urbana-Champaign
  • Jeong-Hee Choi
    • Department of Crop SciencesUniversity of Illinois at Urbana-Champaign
    • Korea Food Research Institute
  • Mosbah M. Kushad
    • Department of Crop SciencesUniversity of Illinois at Urbana-Champaign
  • Elizabeth H. Jeffery
    • Department of Food Science and Human NutritionUniversity of Illinois at Urbana-Champaign
    • Department of Crop SciencesUniversity of Illinois at Urbana-Champaign
Original Paper

DOI: 10.1007/s11130-013-0356-y

Cite this article as:
Ku, K.M., Choi, J., Kushad, M.M. et al. Plant Foods Hum Nutr (2013) 68: 113. doi:10.1007/s11130-013-0356-y

Abstract

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.

Keywords

Brassica oleracea L.Methyl jasmonateQuinone reductase activityPostharvest storageGlucosinolates

Copyright information

© Springer Science+Business Media New York 2013