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Development of Far Infrared Dryer for Siitake Mushroom

西茸蘑菇远红外干燥机的研制

基本信息

批准号：
09660274
负责人：
ABE Takemi
金额：
$ 2.24万
依托单位：
Ehime University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09660274/
关键词：
Dryer Far Infrared Shiitake Mushroom Quality Postharvest Technology Wave Length Drying Rate Save Energy 波長吸収率セラミックヒ-タ

项目摘要

This study concerns the development of the far infrared radiation drier for shiitake mushroom.Results got from this research are as follows ;1) The equipment which built in the ceramic or quartz glass heater with typical features in wavelength region of about 2.5〜25 μm was produced experimentally.2) Using this equipment, the far infrared radiation was irradiated, and from the relationship between surface temperatures, supply capability density, optical physical property such as radiation energy distribution of the heater of the far infrared radiation heater, etc., the fundamental heating characteristic of the far infrared radiation heating, and infrared irradiation characteristic was clarified.3) The drying velocity by large heater of the radiation energy was the biggest. And, it was proven that the case of the drying by the near infrared radiation radiator in which the supply capability is big was rapider than that of the drying by the far-infrared radiation body.4) By measuring the temperature change near the shiitake mushroom surface, physical properties of medium (density, specific heat, thermal conductivity), it was possible to estimate infiltration distance of the far infrared radiation energy. Infrared ray energy of the long-wavelength side is absorbed in the surface of shiitake mushroom, because in the long-wavelength side over 2.5 μm, the value of absorption coefficient of the water is increased, and because in the small wavelength side, it decreases for the contrariety. It was clarified that the small wavelength side infrared ray energy affected the temperature rise of the shiitake mushroom inside.5) On shiitake mushroom which dried under various conditions, the quality was investigated about water absorption and brown change of water at the rehydration, the change of free amino acids of shiitake mushroom.

本研究涉及香菇远红外辐射干燥机的研制。研究结果如下：1）实验制作了内置陶瓷或石英玻璃加热器的设备，该设备在2.5〜25μm波长范围内具有典型特征。2）使用该设备照射远红外辐射，从表面温度、供给能力密度、光学物理性质之间的关系如远红外辐射加热器的辐射能量分布等，明确了远红外辐射加热的基本加热特性和红外辐射特性。3）辐射能量大的加热器干燥速度最大。并且，已经证明，通过供应能力大的近红外辐射辐射体进行干燥的情况比通过远红外辐射体进行干燥的速度要快。 4）通过测量香菇表面附近的温度变化、介质的物理性质（密度、比热、热导率），可以估计远红外辐射能量的渗透距离。长波长侧的红外线能量被香菇表面吸收，因为在2.5μm以上的长波长侧，水的吸收系数值增大，而在短波长侧，则相反减小。阐明了小波长侧红外线能量对香菇内部温度升高的影响。5)对不同条件下干燥的香菇,考察了香菇复水时的吸水率和水分褐变、香菇游离氨基酸的变化等品质。