期刊
JOURNAL OF FOOD ENGINEERING
卷 100, 期 2, 页码 372-376出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jfoodeng.2010.04.016
关键词
Phase change material; Freezer; Ice cream; Drip loss; Power loss
资金
- University of Auckland Doctoral Scholarship
An investigation into the effect of phase change material (PCM) panels placed against the internal walls of a freezer during repeated power loss every 24 h over a 2 week period was conducted. Comparisons of the freezer air temperature and product temperature in a freezer containing PCM panels showed lower temperature fluctuations than in a freezer without PCM. Product analysis was also conducted by measuring the drip loss in 1 x 1 cm cubes of bovine muscle (Musculus semimembranosus) and the ice crystal size in 1 L blocks of vanilla ice cream. Drip loss was measured by centrifuging the samples and weighing the drip collected. Analysis of ice crystal diameters was conducted by microscopy and an image analysis tool. Drip loss in meat was found to be lower and ice crystal sizes in the ice cream were found to be smaller in the freezer with PCM compared to without PCM. (C) 2010 Elsevier Ltd. All rights reserved.
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