ISHS Acta Horticulturae 157: Postharvest Handling of Vegetables
STORAGE BEHAVIOUR OF WHITE CABBAGE UNDER DIFFERENT WATER VAPOUR PRESSURE DEFICITS |
| Author: | K. Walker |
| Abstract:
In a multifactorial experiment carried out in two successive years, White cabbage (cv. 'Minicole') was stored for 2, or 3 months' periods, respectively, using 9 different water vapour pressure deficits (14 – 88 Pa). These were received in a flow-through system regulating 3 different relative humidities (98, 95, 92 %) at 3 modified temperatures each (0.5, 4, 8°C). Humidities were controlled periodically by use of an electronically calculating psychrometric system. Weight losses (y in %) were highly correlated with water vapour pressure deficit (x1 in Pa) and storage period (x2 in d). Stepwise multiple regression analysis of the data resulted in the following equation: y = 0.0696 x1 + 0.0314 x2 - 1.74 r = 0.90 Weight losses of three cabbages each taken from the individual replicates were measured in weekly intervals. An exceptionally high amount of the total weight losses was assessed during the first week of the storage period. Low vapour pressure deficits resulted in higher salable amounts at temperatures of 0.5 and 4°C. There was no influence of vapour pressure deficits and storage periods on dry matter content and respiration (measured at 10°C). | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
