• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.47 no.1
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• pp.45-51
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• 2015

The anti-fungal activity of plant extractives was investigated and the lacquer extractives were selected. The lacquer extractives were coated on anti-fungal paper and confirmed its effect. Water repellency, tensile index and brightness of anti-fungal paper treated with natural extractives were similar to commercial pesticide-treated paper. The incidence of Fusicaladium leuieri MAGNUS of commercial pesticide-treated paper and anti-fungal paper treated with lacquer were similar but, the incidence of Botryosphaeria dothidea (Moug.) Ces & De Not and Gloeodes pomigena of those were increased 10-60 % than commercial pesticide-treated paper.

• Food Science and Preservation
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• v.10 no.4
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• pp.447-453
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• 2003

Causal factors related to the skin disorder such as black stains during cold storage of 'Niitaka' pear fruit are of great importance to solve the postharvest disorder problems. The morphological and biochemical changes observe of pear skin affected by different harvest times and storage environments. Occurrence rate of black stain in 'Niitaka' pear fruit was the highest in newspaper bagging with 75% among various bagging materials at harvest time because of the high relative humidity within the double layer paper bags. During cold storage, the rate was 54～100% in 30 $\mu\textrm{m}$ polyethylene (PE) film packaging. As the harvest time was postponed, the rate increasedduring cold stoinge. The into was 1.5 to 2.4 times higher in pears harvested in late September than in those harvested in early and mid October. There was no significant difference in occurrence of black stain fruit between the 30 and 50 $\mu\textrm{m}$ PE film bags. The causal fungus of the black stain pear was assumed as Gloeodes pomigena (Schweintz, 1920). The treatment of 0.1～0.5 ppm ozone gas prevented the occurrence of the pear fruit black stain until 180 days after cold storage. The ozone treatment on the affected fruit was also effective in preventing the progress of the black stain.