บทคัดย่องานวิจัย

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Hexanal vapor acts as residueless antifungal agent that enhances aroma biosynthesis in apple fruit.

Song, J.; Leepipattwit, R.; Deng, W.; Beaudry, R.;

Acta Horticulturae Year: 1998 Issue: No. 464 Pages: 219-224 Ref: 10 ref.

1998

บทคัดย่อ

Hexanal vapor acts as residueless antifungal agent that enhances aroma biosynthesis in apple fruit.

After 48 h of exposure to 100 micro l hexanal/litre, the hyphal growth of Penicillium expansum and Botrytis cinerea on PDA medium was approximately 50% that of untreated controls. At a concentration of 250 micro l/litre, neither fungus grew during the treatment period; however, some growth of both fungi occurred 120 h after treatment. At concentrations of hexanal vapour of 450 micro l/litre or more, growth of both fungi ceased and the organisms were apparently killed, neither showing regrowth when moved to air. When fungi were allowed to germinate and grow for 48 h in hexanal-free air, a subsequent 48-h exposure to 250 micro l hexanal/litre slowed colony growth relative to controls for several days and a 48-h exposure to 450 micro l/litre stopped growth completely. Concentrations of hexanal that inhibited fungal growth on PDA also retarded decay lesion development on Golden Delicious and Jonagold apple slices. Hexanal treatment stimulated aroma volatile production in the apple slices, with hexan

ol and hexylacetate production strongly enhanced after 20-30 h of treatment. A small amount of butylhexanoate and hexylhexanoate production was also noted.