...This method has been used for a long time, in which flowers are put into refined beef tallow or pork fat to absorb the flower essential oils and make a pomade, which is then extracted with alcohol to make an extract essence. The hot infusion method uses oils heated to 60-70°C, while the cold infusion method is done at room temperature. Other methods include extracting flower essential oils using volatile solvents such as hexane, petroleum ether, and liquefied propane, obtaining crude flower essential oil by vacuum distillation, extracting it with alcohol, and refining it by vacuum distillation. ... *Some of the terminology that refers to the "warm immersion method" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…精製した牛脂や豚脂の中に花を入れ,花精油を吸収させて香脂(ポマード)とし,さらにアルコールで抽出してエキストラクトエッセンスとする方法で,古くから行われている。60~70℃に温めた油脂を用いるのを温浸法,常温で行うのを冷浸法という。ほかに,ヘキサン,石油エーテル,液化プロパンなどの揮発性溶剤を用いて花精油を抽出し,減圧蒸留によって粗製花精油をとり,アルコールを用いて抽出,減圧蒸留して精製する方法も行われている。… ※「温浸法」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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