บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Studies on postharvest physiology and storage of natsudaidai fruits.

Zhang ShangLong, Chen KunSong, Liu ChunRong and Zhang BaiShou

Acta Agriculturae Zhejiangensis Year: 1994 Vol: 6 Issue: 2 Pages: 119-123 Ref: 13 ref.

1994

บทคัดย่อ

Studies on postharvest physiology and storage of natsudaidai fruits.

ABSTRACT

In studies carried out during 1989-91, natsudaidai (Citrus natsudaidai) fruits were stored at 8.42 plus or minus 3.10 deg C and 79.82 plus or minus 5.11% relative humidity for 160 days. The senescence of rind and juice sac tissue was not synchronized, senescence of the rind occurring later than that of the juice sac. A marked decline in soluble sugar content occurred before 79 days of storage, but titratable acidity showed no marked changes during the same period. The converse was true after 79 days. The effects of various fungicides, with or without wrapping in polyethylene film, on the rate of decay and incidence of brown blotch (a physiological disorder affecting the rind) during fruit storage were also investigated. Treatment with thiabenchazole [thiabendazole] (TBZ) at 1000 ppm + 2.4-D at 200 ppm, 24 h after harvest, combined with wrapping fruits individually in polyethylene film, significantly reduced the rate of fruit decay caused by moulds and other microorganisms, controlled the occurre

nce of brown blotch, reduced fruit weight loss, maintained freshness, and had no marked effect on eating quality (sugar content, titratable acidity and the sugar:acid ratio). In a comparison of 3 different polyethylene films, fruit flavour and appearance were best for fruits wrapped in XG modified film. It is suggested that low relative humidity may be involved in the development of brown blotch on natsudaidai fruits.