Development of a Parching Machine Using Super-Heated Vapor or Super-Heated High-Moisture Atmosphere

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  • 過熱水蒸気や加湿熱風を利用した殺青機の開発
  • カネツ スイジョウキ ヤ カシツ ネップウ オ リヨウシタ サッセイキ ノ カイハツ

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We developed a new parching machine with super-heated vapor or super-heated highmoisture atmosphere as a heat medium, and investigated the influence exerted on the characteristics of manufactured tea and crude tea quality.<br>(1)We developed machine specifications that improved throughput and allowed us to control stable quality compared with the conventional kamairicha parching machine.<br>(2)The new parching machine could not only manufacture like kamairicha but also achieve various degrees of steaming of products like green tea or heavily steamed sencha.<br>(3)The new parching machine could not only deactivate enzymes but dry leaves.<br>(4)The influence of throughput was great with respect to the grade of pan-parched flavour, which meant that there was a contact opportunity for tea leaves and the surface of machine's wall.<br>(5)Unpleasant smells such as that produced in a summer crop of tea were reduced by the new parching machine.

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