บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Inhibition of the skin blackening by postharvest factors in 'Niitaka' pear fruit.

Yang YongJoon;

Journal of the Korean Society for Horticultural Science Year: 1997 Vol: 38 Issue: 6 Pages: 730-733 Ref: 11 ref.

1997

บทคัดย่อ

Inhibition of the skin blackening by postharvest factors in 'Niitaka' pear fruit.

Skin blackening of Pyrus pyrifolia fruits (cv. Niitaka) is induced when stored at low temperatures immediately after harvest. The effects of postharvest factors (CO2, ethylene and RH) on the incidence of skin blackening were investigated. Hunter L values decreased significantly in fruits stored at high CO2 concentrations (10 and 50%) compared with those stored at low CO2 concentrations (1 and 3%). Fruits showed non-climacteric behaviour due to low production of ethylene. More ethylene was produced by fruits stored in CO2 at 1-50%. Fruits stored in 1% CO2 had no skin blackening after 60 days storage; this disorder appeared in fruits stored in 1% CO2 + ethylene and low RH or high RH after 38 and 46 days, respectively. Skin blackening was observed after 20 days in the presence of 3% CO2 + ethylene; no skin blackening was observed in the absence of ethylene. The incidence of the disorder was accelerated by higher CO2 concentrations (10 and 50%). Firmness, acidity and vitamin C [ascorbic acid] signif

icantly decreased in fruits stored in 10 or 50% CO2 due to high CO2 injury. Flesh quality was little influenced by external ethylene supply and RH conditions. Skin blackening of Niitaka fruits was influenced by ambient CO2 concentrations of >1%, ethylene and RH.