ISHS Acta Horticulturae 326: International Symposium on Pre- and Postharvest Physiology of Pome-fruit
THE EFFECT OF CALCIUM-INFILTRATION ON RESPIRATION, ETHYLENE AND AROMA PRODUCTION OF ‘GOLDEN DELICIOUS’ APPLE FRUITS |
| Authors: | J. Song, F. Bangerth |
| Abstract:
After infiltration of 0.05 or 0.15 M calcium chloride together with 0.3 M mannitol into climacteric apples (Malus pumila var domestica L. cv. Golden Delicious), the fruits were stored either at 20 C for 14 days or at 4 C for 100 days. Measurements were taken for respiration, ethylene evolution and volatile (aroma) compounds. Fruits infiltrated with 0.3 M mannitol alone, showed internal browning and decay after about 14 days or 100 days at 20 C or at 4 C respectively. The addition of increasing concentrations of CaCl2 resulted progressively in a reduced respiration and ethylene production by the fruits during storage. No differences in the compositions of the aroma compounds were found between the control and infiltrated fruits. However, 0.15 M CaCl2 significantly decreased the quantity of total aroma production. It appears from the present investigation that the aroma production is affected by CaCl2 at a rather early step in the aroma biosynthesis chain so that more or less all compounds are reduced simultaneously. | |
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