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The Study of Chinese Herbs Used for Sun Protection in Cosmetics
|Issue Date: ||2013-12-17 15:48:54 (UTC+8)|
This research investigates herb extracts as a potential sun screen ingredient in cosmetics. As cited in this experiment twenty herbs were tested for their sun protection and whitening factor as well as their anti-oxidizing properties.
Pine bark, scutellaria, and turmeric extract showed viable results in ultraviolet ray absorption, in particular pine bark extract showed the most significant viability in spectrum absorption spectroscopy (spectrophotometer or spectrometer).
By testing of MTT assay kit (MTT) and Cytotoxic Assay (LDH) in different concentrations of the pine bark extract, it was found that the cells in the epidermis (HS-68) had the highest survival rate and lowest toxicity levels in 3% concentration pine bark extract. Adding the same concentration of the extract into emulsion to test out its sun protection factor consequently yielded a SPF 8.81.
The experimentation resulted in a practical application of the extract in the cosmetic formula. Assessment of in vitro tests revealed a differentiation in outcome, the results do show the pine bark extract can be used as cosmetic sunscreen.
|Appears in Collections:||[生物科技系暨生物醫學研究所] 博碩士論文|
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