บทคัดย่องานวิจัย

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Effect of sulphur dioxide fumigation on Botrytis storage rot and residues in kiwifruit.

Cheah, L. H.; Hunt, A. W.; Lorentz, P.;

Postharvest Biology and Technology Year: 1993 Vol: 3 Issue: 1 Pages: 11-16 Ref: 9 ref.

1993

บทคัดย่อ

Effect of sulphur dioxide fumigation on Botrytis storage rot and residues in kiwifruit.

Kiwifruit (Actinidia deliciosa) inoculated with B. cinerea spores were exposed to SO2 at concn of 1600 and 3200 p.p.m. for 5 to 30 min at 17 deg C. Fumigation at 1600 p.p.m. for 20 or 30 min and 3200 p.p.m. for 5 min gave almost complete control of Botrytis storage rot. Absorption of SO2 by fruit exposed to 1600 p.p.m. gradually increased with time from 5 to 30 min of fumigation. The rate of absorption was greater at 3200 p.p.m. than 1600 p.p.m. Total SO2 residues were proportional to exposure time and treatment rate. The residues declined sharply from a max. of 4.0 p.p.m. to 1.6 p.p.m. after 24 h and to 1.3 p.p.m. 5 d after fumigation. No SO2 injury was observed on fruit at any concn-time combination tested. Fruit firmness was not affected by the treatments.