ISHS Acta Horticulturae 368: International Symposium on Postharvest Treatment of Horticultural Crops
NEW MEASURES AGAINST SUPERFICIAL SCALD OF APPLES |
| Author: | T. Kállay |
| Keywords: | butylated hydroxy toluene, propyl gallate, Semperfresh, Jonathan spots |
| Abstract:
Butylated hydroxy toluene (BHT) and propyl gallate (Progalin P-PGP) together with 1 % Semperfresh, a product containing esters of fatty acids, were experimented with in a pre-storage dip treatment on Granny Smith apples to reduce superficial scald appearance during cold storage in air. 2500 ppm DPA in water and 1000 ppm DPA in 1 % Semperfresh solution served as controls as well as apples dipped only in water. BHT in concentrations of 1500 ppm, 1000 ppm and 750 ppm together with 1 % Semperfresh decreased superficial scald occurrence significantly, but in lower concentrations the protection weakened. PGP with 1 % Semperfresh, regardless of its concentration, was not effective in scald control. Protection was not apparent even when applied in 1:1 mixtures with BHT. In this experiment some lenticel decay - similar to Jonathan spots - occurred on the apples. DPA at 2500 ppm without Semperfresh seemed to increase spotting, however some apples were spotted in pure tap-water dip treatment as well. When storage losses, caused by either scald or lenticel spot were cumulated, BHT + 1 % Semperfresh combinations seemed to give encouraging results on the way to reducing harmful chemicals on dessert apples. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
