Effects of clove essential oil on postharvest anthracnose and quality of mango

  • LI Junguo ,
  • HU Meijiao ,
  • GONG Deqiang ,
  • MU Junxia ,
  • WANG Weibo ,
  • GAO Zhaoyin ,
  • LI Min ,
  • GU Hui ,
  • CHEN Qianfu ,
  • LEI Xintao
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  • 1(Institute of Horticulture, Hainan University, Haikou 570228, China) 2 (Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China)3 (Environment and Plant Protection Institute, China Academy of Tropical Agricultural Sciences, Haikou 571101, China)
    4(Key Laboratory of Hainan Province for Postharvest Physiology and Technology of Tropical Horticultural Products, Haikou 571101, China)

Received date: 2021-08-24

  Revised date: 2021-10-13

  Online published: 2022-10-17

Abstract

To explore the inhibitory effect of plant essential oils on Colletotrichum gloeosporioides after postharvest and the effect of plant essential oils on postharvest quality of ‘Guifei’ mango, the antifungal activity of 10 plant essential oils on Colletotrichum gloeosporioides was tested in vitro. Firstly, the wounded ‘Guifei’ mango was soaked in 0.2, 0.5, 1.0, 2.0 and 4.0 μL/mL clove essential oil for 5.0 min, and then inoculated with mango anthracnose. The lesion diameter and disease index of anthracnose were counted. The natural disease was observed after being soaked in 2.0 μL/mL clove essential oil for 5.0 min, and the disease index and control effect were recorded and the effects of treatment on the fruit quality were also studied. The results showed that 10 kinds of essential oils had significant inhibitory effects on the mycelial growth of mango anthracnose pathogen in the plate antibacterial test, and clove essential oil had the best inhibitory effect which with the EC50 and EC90 values of 0.19 μL/mL and 0.57 μL/mL, respectively. In the inhibitory effect of clove essential oil on the inoculation wounds of ‘Guifei’ mango, the lesion diameter and disease index of the 2.0 μL/mL treatment group were significantly lower than those of the control group at 12 d of storage. The lesion diameter was 10.45 mm and the disease index was 46.25. At the same time, keeping maintained high soluble solids and vitamin C content in the late storage 2.0 μL/mL treatment can effectively prevent the natural disease after harvest, which can significantly inhibit the weight loss and the decrease of flesh firmness (P<0.05),but had no significant effect on titratable acid (P>0.05).

Cite this article

LI Junguo , HU Meijiao , GONG Deqiang , MU Junxia , WANG Weibo , GAO Zhaoyin , LI Min , GU Hui , CHEN Qianfu , LEI Xintao . Effects of clove essential oil on postharvest anthracnose and quality of mango[J]. Food and Fermentation Industries, 2022 , 48(18) : 107 -113 . DOI: 10.13995/j.cnki.11-1802/ts.029074

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