...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Food Science >Modeling of the Humidity Effects on the Oxygen Absorption by Iron-Based Scavengers
【24h】

Modeling of the Humidity Effects on the Oxygen Absorption by Iron-Based Scavengers

机译：湿度对铁基清除剂吸收氧气的影响的建模

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

It has been reported in the scientific literature that moisture is required for oxygen absorption by iron-based scavengers. The rate of oxygen absorption is crucial in oxygen-sensitive foods. However, no quantitative correlations between the relative humidity and the oxygen absorption by these scavengers have been found in the scientific literature. The humidity level, the O_2 concentration, and the gas composition inside the package are the major factors determining the isothermal O_2 absorption kinetics. In the present study, the effect of RH on the oxygen absorption of an iron powder taken from an oxygen scavenger was investigated. This process was modeled, and correlations have been developed and compared to experimental results. The developed models describe well the effect of humidity on the oxygen absorption by the iron powder. It was found that an increase in the rate of oxygen absorption results in a decrease in the porosity, an increase in the specific surface area of the iron powder's corrosion products, and a decrease in the O_2 diffusivity through the particles. The heat evolved during the exothermic reaction leads to a decrease in the amount of water adsorbed on the corrosion products. The results of the present study elucidate the effect of moisture on the O_2 absorption by iron-based oxygen scavengers and can be used for a proper design of packages intended for storage of foods and fruits and vegetables of intermediate and high water activity.rnPractical Application: Since humidity has an important role in determining the rate of oxygen absorption kinetics by iron-based oxygen scavengers, using the models derived and presented in the present publication can bring upon a better understanding of the oxygen absorption process and a more efficient way of using oxygen scavengers in the packaging and storing of different oxygen sensitive foods.
机译：据科学文献报道，铁基清除剂吸收氧气需要水分。氧气吸收率在对氧气敏感的食物中至关重要。然而，在科学文献中尚未发现相对湿度和这些清除剂的氧吸收之间的定量关系。包装内的湿度，O_2浓度和气体成分是决定等温O_2吸收动力学的主要因素。在本研究中，研究了RH对取自除氧剂的铁粉吸氧的影响。对这一过程进行了建模，并建立了相关性并将其与实验结果进行比较。开发的模型很好地描述了湿度对铁粉吸收氧气的影响。发现氧吸收速率的增加导致孔隙率的降低，铁粉的腐蚀产物的比表面积的增加以及通过颗粒的O_2扩散率的降低。在放热反应期间放出的热量导致吸附在腐蚀产物上的水量减少。本研究的结果阐明了水分对铁基除氧剂对O_2吸收的影响，并可用于包装的适当设计，这些包装旨在用于存储中度和高水分活度的食品和水果和蔬菜.rnn实际应用：由于湿度在确定铁基除氧剂的吸氧动力学速率方面起着重要作用，因此使用本出版物中推导和介绍的模型可以更好地了解吸氧过程，并更有效地利用氧气各种氧气敏感食品的包装和储藏中的清除剂。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号