Ultrasound-Ultraviolet(US-UVC)Combined Use in Green and Scientific Maintenance of Angelica Sinensis
Objective:The combination of ultrasonic cleaning and short wave ultraviolet(UVC)disinfection technology is used to maintain the Chinese herbal medicine Angelica sinensis in a green and scientific manner.Through regular observation,sampling and measurement of various Chinese pharmacopoeia indicators in different periods,the optimal conditions for the maintenance of Angelica sinensis by the combination of ultrasonic-ultraviolet(US-UVC)are analyzed and optimized.Method:Using ordinary water washed Angelica sinensis(CG-W)and ultrasonic washed Angelica sinensis(CG-US)as control groups.The Angelica sinensis was ultrasonically washed and dried until it was dried enough.Then,using shortwave ultraviolet irradiation to disinfect the set time,various pharmacopoeia indicators and their changes were observed regularly with the naked eye and measured in different time periods to comprehensively evaluate the maintenance effect.Result:The CG-W control group of Angelica sinensis showed extremely mild insect infestation without mold after 18 months,slight mold,oil leakage,and color change in 24 months,and severe insect infestation in 27 months;The CG-US control group showed mild insect infestation in 21 months.The insect infestation was still mild and there was no significant mold or color change till 24 months.In the US-UVC combined maintenance group(US-UVC),slight medicinal powder was observed in 27 months in the US-UVC-0.5h group,and only some medicinal materials showed insect infestation between 27 and 30 months.There was no mold or color change,and there was no significant change in color.However,the Angelica sinensis in the US-UV-1.0h group showed extremely light signs of insect infestation when stored over 30 months.During the storage period of 30 months after maintenance,the Angelica sinensis in each group of US-UV-2.0h,US-UV-3.0h and US-UV-4.0h remained intact,without any insects,mold,or discoloration.The main pharmacopoeia indicators measured at each time period in the control group and experimental groups all met the requirements.The relative standard deviation(RSD)value and its range of the determination results are enough to show that the repeatability and stability of the method are good.Conclusion:Considering cost and maintenance time,US-UVC-2.0h maintenance is the optimal combination for maintenance.After maintenance,Angelica sinensis has a good storage period of more than 30 months.US-UVC combined maintenance of Chinese herbal medicine Angelica sinensis has the characteristics of economic efficiency,easy operation,time-saving,energy-saving,safety and environmental protection,and can be promoted and applied.
Angelica sinensisultrasonic-ultraviolet combinationultrasonic cleaning technologyUVC disinfection technologygreen and scientific maintenance
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