Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/72285
標題: 超臨界二氧化碳萃取茶葉精油及濃縮研究
作者: 王煌忠
張慶源
邱國隆
陳英玲
張傑明
關鍵字: 超臨界二氧化碳;包種烏龍茶;背壓;改性劑
出版社: 國立中興大學工學院;Airiti Press Inc.
Project: 興大工程學刊, Volume 10, Issue 3, Page(s) 1-9.
摘要: 
A self-design experimental system was employed to improve the
concentration of essential oils for Pao-chung oolong tea-leaf by using
supercritical CO ?? extraction. The effects of temperature, CO ?? flow rate,
back-pressure, and the addition of co-solvent on the extractive efficiency were
studied. The densimeter was used to determine the concentrationof essential oils
in the liquor. Results showed that the concentration of tea oils was found to
increase with temperature, ranged from 25 ℃ to 60 ℃, but decreased at 80 ℃.
It evidenced that the mass transfer between the oils-laden liquid CO ?? phase
and the liquor phase was so slow that absorption alone controlled the overall
extraction rate. The effect of co-solvent results in higher concentration of tea
oils and increases with the amount of addition.

本研究以自行設計之超臨界流體萃取實驗裝置,進行二氧化碳萃取包種烏龍茶,
並製成茶酒且探討濃度及萃取效率。內容含溫度、流速、吸收槽背壓、改性劑添加量諸效應
對於茶酒中可溶性成分及總濃度變化的影響。當壓力為 4500psig,溫度範圍為 25 ℃至 60
℃時,萃出濃度隨溫度上昇而增大,顯示茶葉精油之蒸汽壓控制萃出濃度,但 80 ℃時,由
於二氧化碳密度下降,使得萃取效果降低。經實驗得知,較高流速下之茶葉精油萃出濃度較
佳,證明二氧化碳流速僅影響茶葉粉粒外部質傳阻力。改性劑添加量對茶葉精油的萃出率有
正面影響,且隨添加量增加而增大。
URI: http://hdl.handle.net/11455/72285
ISSN: 1017-4397
Appears in Collections:第10卷 第3期
工學院

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