如何从薄荷叶里提取薄荷油?

2024-12-11 12:06:48
推荐回答(4个)
回答1:

1、选择一种酒。伏特加或者其他高浓度酒很适合用来做薄荷油。

2、切碎或揉碎薄荷叶。用刀切碎或用干净的杯底碾碎新鲜薄荷叶,让更多的薄荷油流出来。

3、把薄荷叶和酒装入带盖的玻璃罐。用薄荷叶填满罐子,瓶口留1.25厘米空间,这样做出来的薄荷酊更浓。

4、把薄荷叶在罐子中放几周,期间摇晃几次。

5、把薄荷油滤到棕色玻璃瓶中,提取完成。

回答2:

下图是用水蒸气蒸馏法从薄荷叶中提取薄荷油的装置图:

(1)安装好如图所示的装置,特别要注意将冷凝器夹好。

(2)将薄荷叶尽量剪碎,取适量的薄荷叶放入B瓶内。

(3)向A瓶内加水,至容积的2/3左右,为防止出现水碱,可加入数滴稀硫酸,此时应向瓶中放入几粒沸石或碎玻璃、碎砖瓦以防暴沸。

(4)向冷凝器中通入自来水

(5)安装好连接管,将连接管的出口放在接收瓶中。接收瓶口上盖上一小块铝箔或牛皮纸。

(6)将蒸气发生器加热,至瓶中的水沸腾,然后调节火的大小,以维持水稳定的沸腾程度。

(7)当接收瓶内漂在水上的油状物(即精油)不再增多时即可停止实验。

本装置是用水蒸气蒸馏法提取薄荷油,其原理是利用水蒸气将挥发性较强的植物芳香油携带出来。蒸馏时,将原料放入B瓶,在原料底部通入水蒸气,即可带出原料里面的芳香油,A瓶中水量应约占2/3,为防止暴沸,可加入沸石,冷凝器中应通入自来水,以降低油水混合气体的温度,便于分层。由于薄荷油具有挥发性,因此在接收瓶口应盖上小块铝箔或牛皮纸。

回答3:

2.1 提取方法  2.1.1 水蒸气蒸馏法提取称取粉碎好的薄荷200 g,置挥发油提取器中,加水1 000 ml,按《中国药典》2000版附录ⅩD挥发油测定法提取挥发油。提取6 h,收集薄荷油。用无水硫酸钠脱水,滤纸过滤。  2.1.2 冷浸法提取称取薄荷粉末20 g,用600 ml石油醚室温浸泡3次,每次用200 ml溶剂,浸泡时间为3 h/次,合并提取液,将滤液在旋转蒸发仪上蒸去石油醚,以下同2.1.1项处理。  2.1.3 超声波法提取称取薄荷粉末20 g,以200 ml石油醚为溶剂,超声提取3次。超声频率40 kHz,提取时间为30 min/次。合并提取液,将滤液在旋转蒸发仪上蒸去石油醚,以下同2.1.1项处理。  2.1.4 超临界CO2法提取取薄荷粉末1.3 kg,装入萃取釜。在萃取压力为9 MPa,萃取温度为50℃,CO2流量为25 L/h的条件下,萃取1.5 h,收集薄荷油,以下同2.1.1项处理。  2.2 薄荷油出油率比较按上述方法分别提取薄荷油,并计算出油率。水蒸气蒸馏法提取薄荷油的得率为1.15%,冷浸法提取薄荷油的得率为1.27%,超声波法提取薄荷油的得率为1.34%,超临界CO2法提取薄荷油的得率为2.43%。

回答4:

水蒸气蒸馏技术常用于和水长时间共沸不反应、不溶或微溶解于水,且具有一定挥发性的有机化合物的分离和提纯.目前,水蒸气蒸馏常用于从植物叶茎中提取香精油以及从中草药中提取挥发油和天然药物.薄荷(Mentha haplocalyx Briq.)唇形科植物薄荷的茎叶.薄荷在临床广泛应用于风热感冒、温病初起、风热上攻所致的头痛、目赤、咽喉肿痛等症.

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