Extraction Of Artemisiaargyi And Preparation Of Antibacterial Detergent

When selecting detergents,the daily necessities in our lives,people prefer to buy the products which are more environment friendly,gentle and multi-functional.In order to meet the requirements of the consumers,this paper has done the following research.Firstly,extracting Artemisia argyi with chemical method.Secondly,the obtained extract was subjected to antibacterial test and infrared analysis.Finally,the antibacterial extract was added to the green detergent in a certain proportion and performance analysis was conducted.In the extraction process of Artemisia argyi,this study mainly used three extraction methods,and then evaluated the advantages and disadvantages of the methods according to such comprehensive factors as extraction rate and extract quality.The first method is to extract Artemisia argyi through steam distillation.The final analysis of single factor determines the best extraction process by steam distillation.That is,using 30% alcohol as the extraction solvent,and then the extraction mixture is prepared by a liquid to material ratio of 10:1.After the extraction mixture was put in a high temperature and high pressure dyeing machine at 70 ? for 1.5 hours and distilled for another 3 hours,the obtained extraction rate of Artemisia argyi can reach 35.1%.In the second method,volatile oil extractor was used to extract Artemisia argyi to explore the possibility of obtaining volatile oil from the Artemisia argyi.It was found that due to the extremely low volatile oil content of Artemisia argyi,almost no oil layer appeared in the volatile oil extractor.Therefore it was difficult to directly separate the essential oil from Artemisia argyi.Besides,adding Artemisia argyi essence oil into the detergent is costly and of little use,so the final abandonment of direct extraction of artemisia oil.In the third method,the ultrasonic assisted steam distillation was used to optimize extraction process of Artemisia argyi,and after orthogonal analysis,the best extraction process is as follows: using 30% alcohol as the extraction solvent.The extraction mixture was prepared at a liquid to material ratio of 10:1.After the extraction mixture was processed with ultrasonic waves at a power ratio of 70% for 30 minutes and distilled for another 3 hours,the obtained extraction rate of Artemisia argyi reaches up to 33.9%.In the process of the antibacterial performance of the extract,Staphylococcus aureus was selected as the strain,and the antibacterial property of the extract was measured by agar plate diffusion method.The antibacterial property of the extract was compared with the volatile oil sample extracted from supercritical carbon dioxide.It was found that the antibacterial property of the extract obtained by ultrasonic assisted steam distillation was weaker than that of the volatile oil of Artemisia argyi,but stronger than that of the extract obtained by steam distillation.In order to further explore the antibacterial properties of the extract,then the extract was concentrated at different temperatures and subjected to an antibacterial test.It was found that only the original extract was antibacterial and the rest failed to show the same property.That discovery shows that the antibacterial property of Artemisia argyi extract is related to the chemical components contained in the extract.The extract may lose effective antibacterial ingredients in the extract during the concentration process.The infrared spectrum of the antibacterial extract and the volatile oil sample of Artemisia argyi were compared and it was confirmed that the difference in the antibacterial properties of the two liquids was mainly due to the purity of the extract of Artemisia argyi and the integrity of the extracted components.The main antibacterial component of the extract is a ketone compound,while the antibacterial components of the volatile oil sample includes not only ketone compounds but also esters,ethers and phenols.In the manufacturing of antibacterial detergents,the environment friendly,low-stimulation,easily degradable surfactants AOS,APG0814,APG1214 were selected to compound with AES,LAS,6501 and triethanolamine.By further analyzing the appearance stability and detergency of the obtained sample,the basic formula of the detergent was finally determined to be APG1214(AOS,APG0814): LAS: 6501: triethanolamine: deionized water = 6:4:13:2:1 :74.Then Artemisia argyi extract was added into detergent instead of deionized water.After considering comprehensive properties including appearance stability and detergency,the final detergent formula was APG1214: LAS: 6501: Triethanolamine: Artemisia argyi extract: deionized water =6:4:13:2: 1:15:59.The main property of the detergent is that with the detergency of 38.3,2.0higher than standard synthetic detergent,its solid content is only 17.3%.The detergent is low in irritation and has certain antibacterial property,and the pH of the stock solution is 8.45.The pH of the 1% washing solution is 6.96,which is close to the pH of human skin and meets the basic requirements of consumers for detergents.Finally,the effects of extracts of Artemisia argyi on antibacterial detergents were further studied by antibacterial test and infrared spectroscopy.The results of antibacterial test showed that the antibacterial zone diameter of the detergent increased from 0.8 mm to 1.4 mm and the antibacterial property was remarkably improved after the extract was added.It can be seen from the comparison of the infrared spectrum that the improvement of the antibacterial property of thedetergent is the result of the synergistic effect of the extract and the detergent,and there is no new substance during the process.It indicates that the extract will not affect the safety and stability of the detergent,and the detergent is safe and reliable.