各仁, 借個位來post 資料:
波, 玫瑰呀))))
Extract from she.com forum………
rose absolute & rose otto 有咩分別呢? 價錢相差好遠.
Ans:一般用傳統蒸餾方式就是otto. absolute是一種萃取的方式,會加入溶劑蒸餾植物,令產量多d,萃取得較徹底,萃取出凝香膏(concrete)後再用酒精揮發溶出absolute,,absolute的精油香氣亦較香濃的.2000kg的玫瑰,蒸餾後可得約400g的精油,而採用溶劑萃取,則可獲2.5kg的玫瑰absolute.很多生產商由於此緣故,所以溶劑萃取法已變得很普遍了.有些則會同時使用兩種不同方式萃取精油,以滿足不同顧客的需要.一般otto都會比absolute費1-2倍價錢,但對於芳療嚴格要求的人都寧願買貴d用otto.
轉貼一些有關absolute.的資料,其實唔只rose,茉莉,vanilla等較難萃取的,都會有absoule.
Absolutes are solvent extracted products. They produced by a multi-step process which involves first extracting the flower (or other biomass) with a non-polar solvent such as hexane. After the hexane is evaporated a waxy product is obtained called the CONCRETE. The concrete is then extracted using a polar solvent such as ethanol. The polarity of ethanol will allow extraction of the volatile aromatics from the concrete while leaving behind the non-polar plant waxes which don't dissolve well in ethanol. Finally, the ethanol is evaporated to leave behind the absolute which will typically have 1-5% ethanol remaining in it and sometimes a trace of hexane, depending on the method used.
www.kobashi.to 只有3隻玫瑰油,1隻是rose otto,1隻是稀釋後的otto,1隻是Rose-absolute;
Otto玫瑰是一個專有名稱,指由保加利亞"大馬士革"玫瑰花利用"蒸餾"方式萃取而得的精油~ 對於含油量低的花,大部份廠家都會使用溶劑萃取的方法,如茉莉...比較蒸餾方法,使用溶劑萃取法,可得到多約4倍的"absolute".
absolute不算是精油,一般稱"原精",泛指利用揮發性溶劑浸漬花朵,溶解出濃稠固態的蠟狀物-"凝香膏Concrete",要獲得液態的精油,會使用酒精類揮發溶劑...最後得到的就是absolute和殘餘的花蠟; 有人擔心absolute多少含有殘餘的溶劑或酒精,對皮膚會有敏感或刺激,所以在治療/skincare上會寧選otto;
. 的佢去wc. 佢自行換33, 我分頭去找新褲子. 回頭一看, 成條c路, c wall!!! 幾秒間都唔知佢做左d 咩!!! 平日做野賴晒c 就多, 真人c 就第一次 :-( . 以我執貓c 多年, 今次最賴c 
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