Effect of 24-Epibrassinolide Treatment on Quality of Baby Ginger during Low Temperature Storage

In order to extend the storage life,the effects of exogenous 24-epibrassinolide(EBR)treatment on quality of baby ginger stored at low temperature were investigated. The baby ginger were treated with 5,10 μmol/L EBR for 30 min respectively,and that treated with distilled water as controls,then stored at 4 ℃ for 25 days. Changes in chilling injury incidence,color and the contents of vitamin C,total flavonoids,gingerol,soluble sugar and soluble protein were analyzed regularly. Results showed that EBR treatment significantly reduced chilling injury incidence(P<0.05),maintained good color of baby ginger during low temperature storage,and the high levels of vitamin C,gingerol,total flavonoids,soluble sugar and soluble protein as well. At the end of storage,the chilling injury incidence in 10 μmol/L EBR-treated group was 38.4% of control group(P<0.05). The contents of gingerol,total flavonoids and soluble protein were 27.6%,25.0% and 40.8% higher in 10 μmol/L EBR-treated group than that in control(P<0.05),and the levels of vitamin C and soluble protein were 1.71 and 2.50 times of control group(P<0.05). These results indicated that EBR improves the chilling tolerance and quality of baby ginger during low temperature storage,which has potential for application in postharvest industry.