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| Screening Study of Natural Plants for Sunscreen Effect |
| Hits 1735 Download times 1913 Received:September 04, 2007 |
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| DOI
10.11656/j.issn.1672-1519.2008.01.33 |
| Key Words
natural plant;UV spectrophotometry;UV absorption |
| Author Name | Affiliation | | GUO Yuan-yuan | Tianjin University of TCM, Tianjin 300193, China | | ZHAO jun | Tianjin University of TCM, Tianjin 300193, China |
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| Abstract
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| [Objective] To select the natural plants with strong UV absorption effect at the wavelength range of 200~400 nm. [Methods] Both 70% ethanol and water was taken as solvent to detect this effect by Ultrasonic extraction and UV spectrophotometry. [Results] Extract from 35 kinds of natural plants with concentration of 50 g/L had strong UV absorption effect. Alcohol extraction of Licorice, Honeysuckle, Safflower and water extract of Baicalin at concentration of 0.000 5 g/ml had strong UV absorption effect in the whole UV range. [Conclusions] All Licorice, Honeysuckle, Safflower and Baicalin have strong absorption effect in three bands of A, B, C of the whole UV range and have good sunscreen effect. |
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