In this paper,the vacuum pre-cooling experiments on three types of vegetable have been conducted,inwhich the temperature inside Chinese cabbage,cabbage and potato was compared and the influence of thepressure inside vacuum container on the vacuum pre-cooling has been studied,besides,the effects of thevegetable surface covered with water or not on the weight loss have also been analyzed. All results in theexperiment should be taken into account for developing the technology of vacuum pre-cooling.
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