Microwave drying technology can be applied to traditional Chinese medicine
Microwave drying technology items of modern technology with traditional Chinese medicine production and processing technology is the combination of traditional Chinese craft innovative new ideas . Chengdu Chinese medicine Professor Fu Chaomei briefed reporters on microwave technology in traditional Chinese medicine in the progress of the latest applications .
In order to observe and compare different methods of drying effects of bile , researchers microwave drying groups were set up , dry and ventilated group , bath drying (60 ℃, 70 ℃, 80 ℃) group , IR drying (40 ℃, 60 ℃) group , ultrasonic drying group , sun dried group of six experimental groups.
Technical dried material by measuring the infrared spectrum found with other four different drying techniques , the outdoor ventilation group and microwave spectrum is similar groups . In contrast , microwave drying time of only 15 minutes, the significantly shorter than the conventional method of ventilation 12 hours drying time. This is described in some extent , microwave drying method can replace the traditional ventilation .
Pay over the United States introduced through the microwave drying technology for the pill -type Naoliqing pill ( containing aromatic ingredients ) , type of dirty water pill pill ( including gelatin, animal organs ingredients ) , Maren ( oil fatty ingredients ) , Wu Zi Yan Zong Wan ( sugar , lipids ) and concentrated water pill type Qingshenjianfei eliminate fat pill ( including extracts ) of five products made ​​of three batches of prepared pan process .
The researchers found that rapid heating in the microwave drying process, the pill can be formed outside the vapor pressure difference ( i.e. greater than the external pressure of the vapor inside the vapor pressure) , thus expanding the role of a certain pill , which is conducive to accelerate the dissolving pills scattered speed. " Chinese Pharmacopoeia " provides Maren and light-weight eliminate fat pill dissolution time not more than two hours , while the microwave drying of the finished product were dissolved in l hour scattered , and after microwave drying of the product, its Appearance , assay were comply with the relevant regulations.
Flower petals herbs in a relatively small portion of the water content , organization delicate , easy to dry ; the flower head portion with high moisture ( average moisture content of approximately 80% ) , tissue aging , easy to dehydration , difficult to dry. Joint Technical microwave a stream of dried flowers herbs ( first preliminary drying by microwave , then dry airflow explosion ) , the results show that the combination of micro- splashed with airflow drying method can significantly improve the quality of medicinal flowers .
If using this method can overcome the traditional method of drying chrysanthemum petals caused excessive drying , easy to fall off the petals , insufficient and poor quality of finished products , and application of the technology dried chrysanthemum costs only 2 yuan / kg .
Chinese medicine is subject to processing to one of the major characteristics of Chinese medicine , and processing methods require large heat treatment, but the traditional method of heating the furnace is not easy to control . Chengdu University of TCM researchers use modern microwave drying technology , developed a good quality, low toxicity, high efficacy of microwave gun tuber, tuber and microwave gun with conventional drying methods concocted jiangyou White Monkshood , aconite were shot in Hong Kong traits analyzed.
The results showed that the microwave is made of raw aconite tuber , the water-soluble material and petroleum ether extractables was significantly increased, while in toxicity Diester aconitine -based ether extractables content is relatively little change , indicating that microwave cooked loose texture of the drug , the active ingredient dissolution rate increases , and destroyed the toxic ingredients. And jiangyou white with tablets and Hong Kong Fuzi guns petroleum ether extractables content also increased, but not significantly increase water solubles , ether extractables accounted for a larger proportion . The reason one is concocted soak too long , some loss ingredients ; the other hand, due to dense cell structure , composition easy dissolution .
Analysis shows that the total alkaloids processed products have been reduced , but Jiangyou white with tablets and Hong Kong Fuzi guns compared microwave gun aconite alkaloids relatively less loss , and toxicity Diester aconitine was significantly lower , the deeper the processing , the lower its content , the toxicity is smaller. This further changes the microwave cooked toxic ingredients ratio.
Acute toxicity test results show that all kinds of aconite toxicity in the order: raw aconite > White Monkshood > Hong Kong cannon aconite > microwave gun aconite . Under normal Ringer solution for large amplitude in the heart of each tuber samples had no cardiac effects . For calcium Ringer solution to heart failure due to calcium deficiency in the heart of each sample were significantly strong heart to the role of microwave gun aconite most powerful .
Chao Fu said the United States , the use of microwave cooked Aconite Aconite on material basis and pharmacological two areas have a positive impact , and overcomes some of the drawbacks of traditional processing methods for the modernization of traditional Chinese medicine provides an effective new method .

 

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