Microwave applications in the pharmaceutical industry
Microwave energy application technology applications in the pharmaceutical industry mainly in the following aspects: quick drying herbs , insecticide , sterilization ; proprietary Chinese medicines , tablets, pills , etc. drying, sterilization ; powdered medicament drying, sterilization ; oral liquid sterilization .
Such as Chinese herbal medicines in order to prevent mildew during storage or processing of pre-treatment , it is necessary for them dried. Traditional heating methods for drying different materials , inside and outside the uneven heating of raw materials , energy consumption , long time, the drying effect is not ideal. The microwave processing, because it is material directly absorb microwave energy to achieve the purpose of heating , so the material inside and outside the heat evenly , fast, time is short herbs high grade, low energy consumption and so on.
Hainan Yangshengtang Pharmaceutical Company for turtles powder sterilization, Beijing Xiang Pharmaceutical Co., Ltd. for the Pearl calcium sterilization. Gansu Qizheng Tibetan medicine pills for drying and sterilization, Zhongshan Science worms Group for drying and sterilization of Chinese herbal medicines have achieved good economic and social benefits.
Microwave heating advantages:
1, the time is short, fast . Microwave heating is to be heated a heating element object itself , not the process of heat conduction , the microwave penetration of the material from all directions , the object in a short time to achieve uniform heating , greatly reducing the time .
2 , uniform heating . A conventional drying method of increasing the drying rate, the external temperature to rise , so easy to produce a layer of crust outside the pills . Microwave heating is heated both inside and outside , no heat conduction, electromagnetic waves can usually uniform penetration , heat generation, thus greatly improved uniformity .
3 , low temperature sterilization to maintain medicinal ingredients . Microwave sterilization microwave thermal effect and non-thermal effects for some common result , compared with conventional heat sterilization can be at a lower temperature and shorter time will be able to achieve the desired sterilization effect , mainly from the thermal effects of microwave rapid heating sterilization, rather than the thermal effect is to make proteins and microorganisms mutate physiologically active substances , and loss of vitality or death , thermal effects and non- thermal effects of joint action , the processing time is greatly reduced . Practice shows that the sterilization temperature at 70-80 ℃ generally able to achieve the desired effect , a variety of materials , sterilization is generally within 3-5 minutes . Therefore, the internal processing of Chinese herbal medicine , Chinese herbal medicine quality and appearance of the color, taste , efficacy were not significantly affected.
4, energy efficient. Conventional thermal sterilization often exist in the environment and equipment heat loss , while the microwave is a direct effect on the material handling , and thus no additional heat loss , so the workers a good working environment , with far-infrared heating can save 30%.
5 , easy to control, and advanced technology. Compared with the conventional method means that the use of microwave equipment , useless thermal inertia , flexible operation . The microwave power is adjustable , the transmission speed is adjustable.