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- Title
Experimental study on effect of vacuum pre-cooling for postharvest leaf lettuce.
- Authors
ENHAI LIU; XIAOBO HU; SHENGYONG LIU
- Abstract
According to the physical properties of leaf lettuce and its heat and mass transfer mechanism in vacuum pre-cooling process, the pre-cooling temperature, pressure and volume of spray-applied water were verified throughout the experiment. The key factors affecting the water removal and storage quality of leaf lettuce during vacuum pre-cooling were the water volume and pre-cooling pressure. The quantities of water tested were equal to 4.21-5.98% of the total sample mass and the mass loss of the sample was 1.99-2.87%. Under pre-cooling pressure of 600, 1000 and 1500 Pa, the mass loss was 2.76, 2.70 and 1.93%, respectively. The optimum quantity of the spray-applied water was 5% of the total sample mass.
- Subjects
LETTUCE research; POSTHARVEST physiology of crops; FOOD storage; PRECOOLING; FOOD quality
- Publication
Research on Crops, 2014, Vol 15, Issue 4, p907
- ISSN
0972-3226
- Publication type
Article
- DOI
10.5958/2348-7542.2014.01429.6