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題名 | 以紅外線萎凋茶菁製造包種茶之研究=Studies on Paochung Tea Manufacture from Fresh Tea Leaves Withered by Infrared Ray |
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作者姓名(中文) | 張連發; 賴滋漢; 盛中德; | 書刊名 | 臺灣茶業研究彙報 |
卷期 | 16 1997.05[民86.05] |
頁次 | 頁19-28 |
分類號 | 473.4 |
關鍵詞 | 包種茶; 紅外線茶菁萎凋機; |
語文 | 中文(Chinese) |
中文摘要 | 茶菁萎凋是部份發酵茶製造過程必要的步驟,傳統上係以日光萎凋為主,有時以 熱風萎凋替代;由於受制於天候及熱風萎凋裝置,往往製茶品質未臻理想,尤其在高山地區 常有濃霧籠罩,日照時間較短,致使茶菁採收後萎凋困難,而直接影響茶葉品質與農民的收 益。本研究之目的是研製紅外線茶菁萎凋機,以青心烏龍及臺茶十二號為材料,日光萎凋作 為對照,探討不同萎凋處理對水分蒸散失情形、對多元酚氧化�t活性的影響以及紅外線萎凋 溫度、時間對不同產期及品種茶葉品質的影響。比較紅外線萎凋與日光萎凋的結果,顯示兩 者皆使茶菁水分散失,同時促進茶菁中多元酚氧化�t活性的能力。紅外線萎凋溫度為 35 ℃ 及時間 10 分鐘所製成的茶葉品質,經官能品評分析結果,與日光萎凋者比較均無顯著的差 異,因而紅外線茶菁萎凋機在部份發酵茶製造上有其實用價值。 |
英文摘要 | Withering is a compulsory and important procedure for making partially fermented tea. Traditionally, solar withering is a dominant method of withering tea leaves although in some occasion when the weather is not cooperative, hot-air may be used. However, the anticipated result of solar or hot-air withering may not be satisfactory due to bad weather and facilities for operation. This is especially true in some high elevation areas where foggy and cloudy weather is prevalent, creating a tough environment for withering. The objective of this study was to develop an infrared ray withering machine and to test the appropriate condition when using it to wither tea leaves. The tea cultivars used were cvs. Chinshin Oolong and TTES No. 12. Solar withering was used as a control check during the application of infrared withering machine. Infrared withering had same effects on causing moisture loss and enhancing polyphenol oxidase activity as that of solar withering. The infrared withering machine would be appropriate if tea leaves were hold under 35 ℃ for 10 minutes. Based on the results of sensory evaluation, there were no significantly varietal (cv Chin-sin oolong vs TTES No.12), seasonal effects on made-tea quality between solar and infrared withering. Therefore, if the weather is not well and outdoor solar withering can not be conducted, infrared withering can be applied to ensure sufficient wither for tea making. The withering capacity can be expanded by applying several sets ofthe machine or enlarging the internal space of it. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。