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Synthesis and Surface-Active Properties of Carboxymethylcellulose Esters Obtained by Microwave Assisted Transesterification of Vinyl Laurate

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Journal of Life Sciences 2011年第1期5卷 74-80页

作者： vladimlra tomanova Iva Srokova Vlasta Sasinkova Faculty of Industrial Technologies Trend.in University of Alexander Dubdek I. Krasku 491/30 Pfichov 020 01 Slovakia Institute of Chemistry Slovak Academy of Sciences Dubravska cesta 9 Bratislava 845 38 Slovakia

Polymeric biosurfactants were prepared by the transesterification reaction between vinyl laurate （VILA） and carboxymethylcellulose （CMC）. The reaction was performed in two different reaction media （（A） DMF/pTSA and （B） DMF/K2CO3） at various reaction conditions and using microwave radiation with controlled power as heating source. The obtained water-soluble VILA-CMC derivatives were characterized by FT-IR spectroscopy and their surface-active properties evaluated. All derivatives showed a very low esterification extent and moderate surface tension lowering effect. Nevertheless, they exhibited significant emulsifying efficiency comparable to that of the synthetic surfactant, Tween 20. The results suggested that suitable surface-active VILA-CMC derivatives can be prepared under microwave heating at low microwave power and reaction times in the range of few minutes, which represents a great advantage in comparison to transesterification reactions lasting up to 6 h at conventional heating.

关键词： Carboxymethylcellulose transesterification microwave radiation surface-active properties.

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Clinical Study: Lotion Containing Propolis Special Extract GH 2002 0.5% vs. Placebo as On-Top Treatment of Herpes Zoster

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Health 2017年第10期9卷 1337-1347页

作者： Denisa tomanova Simona Holcova M. Hladíková Dermatological Ambulatorium Consultancy of Dermatovenerology Brno Czech Republic Department of Medical Informatics 2nd Faculty of Medicine Charles University of Prague Prague Czech Republic

Background: The aim of the clinical trial was to establish the contribution of propolis special extract GH 2002 as constituent of a lotion for the supportive treatment of Herpes zoster. Methods: 60 patients with diagnosed Herpes zoster were either treated with a propolis containing (n = 33) or an identical, but propolis-free lotion (n = 27) for 28 days, as an add-on therapy to oral antiviral treatment with aciclovir. Study parameters were the assessment of pain on a visual analogue scale, the assessment of the formation of new vesicles, and the safety of application of the preparation. Results: Improvement of pain was significantly better and quicker in the propolis lotion group (p < 0.001 at all visits). On day 3/4, the reduction of pain versus baseline was 54% versus 20% reduction in favour of propolis lotion. On day 14 the results were 80% versus 42% pain reduction. Healing of lesions was significantly quicker with the propolis-containing lotion: at visit 3 on day 7, 21% versus none of the patients showed a closed skin with or without crusting. After 14 days, the comparison showed 57.6% versus 25.9%. At least 50% of propolis-treated patients were lesion-free on day 14, versus day 28 in the control group (p = 0.013). The formation of new vesicles was also significantly suppressed. On day 3/4 the number of newly formed vesicles was 15 versus 25, on day seven the number of new vesicles was 4 versus 14 (p < 0.001). The advantage of propolis lotion was confirmed through the global assessment of efficacy by the physician, with 75.8 versus 33.3% “good” to “excellent” ratings already on day 3/4, 90.9 vs. 44.4% on day 7, and 100 vs. 74.1% on day 28 (p < 0.001). Skin tolerability was excellent, no allergic reactions, skin irritations or other adverse events were observed. Conclusion: The observations clinically confirm antiviral and anti-inflammatory effects of propolis special extract GH 2002 and at the same time demonstrate the benefits of the topical add-on to the syste

关键词： Herpes Zoster Propolis Controlled Clinical Trial

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探索幸福的人

探索幸福的人

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作者： J.·托曼(J. Toman) M.·托曼诺娃(M. tomanova)

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探索幸福的人苏格拉底传

探索幸福的人苏格拉底传

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1987年

作者：（捷）约瑟夫·托曼（Josef Toman）（捷）米洛斯拉娃·托曼诺娃（Milosiava tomanova）许宏治等译

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