บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Role of polyamines in extending shelf life and the reduction of mechanical damage during plum (Prunus salicina Lindl.) storage.

Perez-Vicente, A., Martinez-Romero, D., Carbonell, A., Serrano, M., Riquelme, F., Guillen, F. and Valero, D.

Postharvest Biology and Technology, Volume 25, Number 1, May 2002 , pp. 25-32.

2002

บทคัดย่อ

Role of polyamines in extending shelf life and the reduction of mechanical damage during plum (Prunus salicina Lindl.) storage.

The role of putrescine was investigated, exogenously applied during postharvest storage of mechanically damaged (50 N force) plums, (Prunus salicina Lindl., cv. BlackStar) at 10 deg C, in relation to fruit firmness (force-deformation ratio and fruit flesh deformation) and ethylene and CO2 production rates. The metabolism of endogenous polyamines (free, conjugated-soluble, and cell wall-bound) was also studied. Infiltration of putrescine led to a reduction in mechanical damage, and an increase in firmness of both force-deformation ratio and fruit flesh firmness parameters. Exogenous putrescine inhibited and delayed ethylene and CO2 production rates. The analysis of polyamine metabolism revealed an activation of the polyamine biosynthesis pathway, showing an accumulation of cell wall putrescine and spermidine, which are possibly responsible for the greater firmness of putrescine-treated plums compared with controls. In these treated fruit, the increase in free spermidine levels could be acting as a physiological marker of mechanical damage.