Experimental Study on Vacuum Pre - cooling for Chinese Cabbages'''' Weight Loss

Abstract

Long stem Chinese cabbages planted in Tianjin were used as experimental samples.The relationship be-tween handling capacity and vacuum pre-cooling's time was investigated.The empirical equation of the relationship between weight loss and handling capacity of Chinese cabbage was achieved.Chinese cabbages were wrapped with preservative film and were put in the boxes which had holes in both sides.The effect of using wrapping boxes and pr-eservative film on vacuum pre-cooling of Chinese cabbages was analyzed.Based on vapor condensation theory,the equation of Chinese cabbage's weight loss was fitted and it was confirmed by the experimental data.