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首页> 外文会议>7th Conference of Food Engineering (CoFE 2001) and A Topical Conference of 2001 AIChE Annual Meeting, Nov 5-9, 2001, Reno, NV >Effect of vacuum impregnation on calcium and zinc contents in apple slabs and mass transfer phenomena
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Effect of vacuum impregnation on calcium and zinc contents in apple slabs and mass transfer phenomena

机译：真空浸渍对苹果平板中钙，锌含量和传质现象的影响

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摘要

Research is required to provide fortified products for the well being of the consumers. This study was aimed to obtain zinc and calcium enriched apple slabs by a vacuum-impregnation process. Apple slabs were placed in a sucrose solution (50 °Brix) containing different concentrations of either calcium (0 to 100 mg/100 g) or zinc (0 to 37.5 mg/100g). The dehydration-impregnation process was carried out at a vacuum pressure of 50 cm Hg and the impregnation and relaxation times varied between 3 and 45 min. The impregnation-dehydration process was performed at atmospheric pressure for reference. The highest levels of calcium and zinc were limited to 120 ppm and 53 ppm respectively, in apple slabs subjected to the process at atmospheric conditions for 72 min and high mineral concentrations in sucrose solutions. High impregnation levels of calcium (383 ppm) and zinc (220 ppm) were achieved using the vacuum-impregnation process. The vacuum-impregnation process will lead to apple slabs with improved mineral content. The experimental values of the dehydration parameters of apple slabs are further discussed here.
机译：需要进行研究以提供增强产品的消费者的福祉。这项研究旨在通过真空浸渍工艺获得富含锌和钙的苹果板。将苹果厚板放在蔗糖溶液（50°Brix）中，其中包含不同浓度的钙（0至100 mg / 100 g）或锌（0至37.5 mg / 100 g）。脱水浸渍过程是在50 cm Hg的真空压力下进行的，浸渍和松弛时间在3至45分钟之间变化。浸渍-脱水过程在大气压下进行以供参考。在大气条件下进行72分钟处理的苹果片中，蔗糖溶液中的矿物质浓度高，钙和锌的最高含量分别限制为120 ppm和53 ppm。使用真空浸渍工艺可实现较高的钙（383 ppm）和锌（220 ppm）浸渍水平。真空浸渍过程将使苹果的矿物质含量提高。苹果板脱水参数的实验值在这里进一步讨论。

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