บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Firmness and decay of apples following postharvest pressure infiltration of calcium and heat treatment.

Sams, C.E., Conway, W. S., Abbott, J. A., Lewis, R. J. and Ben-Shalom, N.

Journal of the American Society for Horticultural Science. Vol: 118 Issue: 5 Pages: 623-627

1993

บทคัดย่อ

Firmness and decay of apples following postharvest pressure infiltration of calcium and heat treatment.

Heating 'Golden Delicious' apples (Malus domestica Borkh.) for 4 days at 38C or pressure-infiltrating them with a 4% CaCl2 solution reduced decay and maintained fruit firmness during 6 months of storage at 0C. Heating reduced decay caused by Penicillium expansum Link ex Thom by approximately 30%, while pressure infiltration with CaCl2 reduced decay by >60%. Pressure infiltration with CaCl, after heating reduced decay by approximately 40%. Pressure infiltration maintained firmness best (>84 N), as measured with a manually driven electronic fruit-firmness probe, followed by heat and CaCl2 (76N), heat alone (71 N), and no treatment (control) (60 N). Force vs. deformation (FD) curves from a puncture test with a fruit-firmness probe mounted in a universal testing machine showed that fruit heated before storage were firmer than all nonheated fruit, except those pressure-infiltrated with 4% CaCl2. However, FD curves also showed that apples pressure-infiltrated with 4% CaCl2 differed quantitatively from apples in all other treatments, including those heated.