Effects of Far-Infrared Irradiative Heating Pasteurization on Fungi

The effect of far-infrared (FIR) irradiation pasteurization on fungi was quantitatively evaluated and compared with the effect of thermal conductive heating. After the bulk temperature of the sterile saline irradiated by FIR reached a steady given temperature, yeast cells (Candida albicans NBRC 1950 and Saccharomyces cerevisiae NBRC 1067) or fungal spores (Aspergillus niger NBRC 4781) were inoculated and FIR heating was conducted. A mullite cylinder FIR heater, with a main wavelength of 4 - 7 μm, was used for FIR heating. Death of fungi by FIR heating and by thermal conductive heating both followed first-order reaction kinetics, and the apparent death rate constants under different temperature conditions were obtained. For the same bulk temperatures, pasteurization by FIR heating was more effective than thermal conductive heating. The activation energy for the death of fungi by FIR irradiation was slightly lower than thermal conductive heating, indicating differences in the mechanism of action.

实现清洁能源采供暖可行性研究及报告——石墨烯远红外线电热膜材料

为研究石墨烯远红外线电热膜助力实现“碳达峰、碳中和”并作为清洁能源采暖可行性,历时两年在多地区实验试点,通过与国际知名空调品牌进行供暖试验对比,在相同环境下的加热性能、室温稳定时间、室温空间分布以及室温舒适性等进行数据分析。