To research the hair-care efficacy of prinsepia utilis oil.We evaluated the haircare efficacies of prinsepia utilis oil through methods such as differential scanning calorimetry(DSC),measuring difficulty level and mec...To research the hair-care efficacy of prinsepia utilis oil.We evaluated the haircare efficacies of prinsepia utilis oil through methods such as differential scanning calorimetry(DSC),measuring difficulty level and mechanical resistance against combing of wet and dry hair,scanning electron microscopy(SEM).According to the analysis of differential scanning calorimetry(DSC),the testing sample has repairing effect on the hairα-keratin damage induced by heated blowing.According to the pictures of scanning electron microscopy(SEM),The test results indicate the repairing or resisting thermal damage effects induced by hair drier of prinsepia utilis oil.By comparison with the blank control group,the strength and work of dry comb and wet comb were significantly reduced in the samples tested with 2%prinsepia utilis oil concentration(P﹤0.05).This indicates the testing sample has the efficacy to improve the easiness of combing and anti-tangle.And friction work is significantly reduced This indicates the smoothing efficacy of the testing sample.and the hair scales status is better;this indicates hair scales repairing efficacy of testing sample.Conclusion:PRINSEPIA UTILIS OIL has the effect of repairing hair scales,resisting thermal damage caused by hair dryer,easy to comb,anti-tangle,smoothing.展开更多
A new hemiterpenoid, （＋）-（2R,3S）-2-chloro-3-hydroxy-3-methyl-T-buty-rolactone was isolatexi from the leaves of Prinsepia utilis Royle. Its structure was clucidatexi by spectroscopic methods and X-ray crystallogra...A new hemiterpenoid, （＋）-（2R,3S）-2-chloro-3-hydroxy-3-methyl-T-buty-rolactone was isolatexi from the leaves of Prinsepia utilis Royle. Its structure was clucidatexi by spectroscopic methods and X-ray crystallographic analysis.展开更多
The purpose of this study is to isolate the active fraction from the crude extract of Prinsepia utilis Royle and to determine its antibacterial activity against the standard and drug-resistant bacteria strains in vitr...The purpose of this study is to isolate the active fraction from the crude extract of Prinsepia utilis Royle and to determine its antibacterial activity against the standard and drug-resistant bacteria strains in vitro. The Prinsepia utilis Royle was extracted in three portions by using petroleum ether, ethanol and water by the continuation recirculate extraction. The antibacterial activity of the extracts were evaluated by the determination of Minimum Inhibitory Concentration （MIC） and Minimum Bactericidal Concentration （MBC） values. The results showed that the ethanol extract and aqueous extract of petroleum ether showed the weakest inhibition. MIC values of the aqueous Prinsepia utilis Royle were found that they had significant effects against bacteria, while ethanol extracts against three standard bacteria （S. aureus ATCC25923, E. coli 44102, Salmonella 50041） were 25, 25, 50 mg·mL^-1 and 50, 100, 100 mg·mL^-1, MIC values of three drug-resistant bacteria （S. aureus GL17, E. coli EYAC08-56, Salmonella STQD2G.） were 50, 50, 50 mg·mL^-1 and 100, 100, 200 mg·mL^-1, respectively. MBC values of two extracts against three standard strains were 25, 50, 100mg·mL^-1 and 50, 100, 200 mg·mL^-1, MBC values of three drug-resistant bacteria were 100, 100, 100mg·mL^-1 and 200, 200, 200 mg·mL^-1, respectively.展开更多
文摘To research the hair-care efficacy of prinsepia utilis oil.We evaluated the haircare efficacies of prinsepia utilis oil through methods such as differential scanning calorimetry(DSC),measuring difficulty level and mechanical resistance against combing of wet and dry hair,scanning electron microscopy(SEM).According to the analysis of differential scanning calorimetry(DSC),the testing sample has repairing effect on the hairα-keratin damage induced by heated blowing.According to the pictures of scanning electron microscopy(SEM),The test results indicate the repairing or resisting thermal damage effects induced by hair drier of prinsepia utilis oil.By comparison with the blank control group,the strength and work of dry comb and wet comb were significantly reduced in the samples tested with 2%prinsepia utilis oil concentration(P﹤0.05).This indicates the testing sample has the efficacy to improve the easiness of combing and anti-tangle.And friction work is significantly reduced This indicates the smoothing efficacy of the testing sample.and the hair scales status is better;this indicates hair scales repairing efficacy of testing sample.Conclusion:PRINSEPIA UTILIS OIL has the effect of repairing hair scales,resisting thermal damage caused by hair dryer,easy to comb,anti-tangle,smoothing.
文摘A new hemiterpenoid, （＋）-（2R,3S）-2-chloro-3-hydroxy-3-methyl-T-buty-rolactone was isolatexi from the leaves of Prinsepia utilis Royle. Its structure was clucidatexi by spectroscopic methods and X-ray crystallographic analysis.
基金Supported by Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT0848)
文摘The purpose of this study is to isolate the active fraction from the crude extract of Prinsepia utilis Royle and to determine its antibacterial activity against the standard and drug-resistant bacteria strains in vitro. The Prinsepia utilis Royle was extracted in three portions by using petroleum ether, ethanol and water by the continuation recirculate extraction. The antibacterial activity of the extracts were evaluated by the determination of Minimum Inhibitory Concentration （MIC） and Minimum Bactericidal Concentration （MBC） values. The results showed that the ethanol extract and aqueous extract of petroleum ether showed the weakest inhibition. MIC values of the aqueous Prinsepia utilis Royle were found that they had significant effects against bacteria, while ethanol extracts against three standard bacteria （S. aureus ATCC25923, E. coli 44102, Salmonella 50041） were 25, 25, 50 mg·mL^-1 and 50, 100, 100 mg·mL^-1, MIC values of three drug-resistant bacteria （S. aureus GL17, E. coli EYAC08-56, Salmonella STQD2G.） were 50, 50, 50 mg·mL^-1 and 100, 100, 200 mg·mL^-1, respectively. MBC values of two extracts against three standard strains were 25, 50, 100mg·mL^-1 and 50, 100, 200 mg·mL^-1, MBC values of three drug-resistant bacteria were 100, 100, 100mg·mL^-1 and 200, 200, 200 mg·mL^-1, respectively.
