Effect of precooling and packaging on the biochemical changes of 'Raktagandha' cut roses.
Palanikumar, S.; Chatterjee, S. R.; Guha, S. K.; Bhattacharjee, S. K.;
Journal of Plant Biology Year: 2000 Vol: 27 Issue: 1 Pages: 77-79 Ref: 11 ref.
2000
บทคัดย่อ
Precooling is an important postharvest operation, which removes the field heat of the cut flowers and enhances the vase life and flower quality. In the present investigation, it has been found that, the precooling of cut roses either by cold storage at 4 deg C for 24 h or ice cold water spray over the cut stems and buds for 45 min gave maximum vase life and improved the flower quality. The cut roses were precooled by either of these methods and packed for 8, 16 and 24 h. The effect of precooling and packaging on total soluble sugars (TSS) and total free amino acids (TFAA) was studied at different stages of senescence of Raktagandha cut roses. The treatment combination of precooling (either by cold storage at 4 deg C for 24 h or ice cold water spray for 45 min) and 8 h packaging registered maximum TSS content at senescence and maximum vase life. However, the TSS content of 24-h packed flowers was decreased at senescence and their ultimate vase life was minimum. The TFAA content of precooled and p
acked flowers was lower than in unprecooled and packed flowers. Precooled and 8-h packed flowers only registered the minimum TFAA at senescence and maximum vase life. It can be concluded that the precooling effect was maintained only for 8 h under polyethylene packaging.