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This distillation is very similar to the hydro-distillation, the difference is that in this method the still contains a grid which keeps the plant material above the water level. This arrangement can be compared to a kitchen steamer basket, the plant material is supported in a "basket" over boiling water, thus exposing the plant material only to the rising steam vapors. The water is boiled below the charge and wet steam passes through the plant material It is important in both water/steam and steam distillation that the still is packed evenly and not too tightly so that steam can extract from the complete charge efficiently. Over packing of the still can cause the steam to force "rat holes" through the charge and leave other parts of the charge unextracted. |
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sltmac(½ð±Ò+5, ·ÒëEPI+1): »¶Ó³£À´~~ 2011-04-28 18:09:39
sltmac(½ð±Ò+5, ·ÒëEPI+1): »¶Ó³£À´~~ 2011-04-28 18:09:39
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This distillation is very similar to the hydro-distillation, the difference is that in this method the still contains a grid which keeps the plant material above the water level. ÕôÁóÓëË®ÕôÁóÊ®·ÖÏàËÆ£¬²î±ð½öÔÚÓÚ£¬ÔÚÕâÖÖ·½·¨ÖÐÕôÁóÊÒ°üº¬ÓÐÒ»¸öÕ¤¸ñ£¬Ê¹µÃÖ²Îï²ÄÁÏ´¦ÓÚË®ÃæÒÔÉÏ¡£This arrangement can be compared to a kitchen steamer basket, the plant material is supported in a "basket" over boiling water, thus exposing the plant material only to the rising steam vapors. ÕâÖÖ²¼ÖÿƱÈÖ®ÓÚ³ø·¿ÀïµÄÕôÁý£¬Ö²Îï²ÄÁϱðÖÃÓÚ·ÐË®ÉÏÃæµÄ¡°ÁýÌ롱֮ÉÏ£¬Òò¶ø½«Ö²Îï²ÄÁϽö½ö±©Â¶ÓÚÉýÌÚµÄË®ÕôÆø¡£The water is boiled below the charge and wet steam passes through the plant materialË®ÔÚ¸ºÔØÏÂÃæ·ÐÌÚ£¬ÊªÕôÆû´©¹ýÖ²Îï²ÄÁÏ¡£ It is important in both water/steam and steam distillation that the still is packed evenly and not too tightly so that steam can extract from the complete charge efficiently. ÔÚË®/ÕôÆûºÍÕôÆûÕôÁóÖоùÔȶø²»¹ý½ôµØ°ü¹üÕôÁóÊÒ¶¼ÊÇÖØÒªµÄ£¬Ö»ÓÐÈç´Ë£¬ÕôÆû²ÅÄÜÓÐЧµØ´ÓÆð²½¸ºÔØÉÏÌáÈ¡²ÄÁÏ¡£Over packing of the still can cause the steam to force "rat holes" through the charge and leave other parts of the charge unextracted.¶ÔÕôÁóÊÒ¹ý¶ÈµÄ°ü¹ü¿ÉÄܵ¼ÖÂÕôÆûѹÁ¦Ðγɴ©Í¸¸ºÔصġ°Êó¶´¡±£¬¶øÊ¹µÃÆäÓಿ·Ö¸ºÔØÉϵIJÄÁϵò»µ½ÌáÈ¡¡£ |
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