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Kor J Aesthet Cosmetol > Volume 8(2); 2010 > Article
Kor J Aesthet Cosmetol 2010;8(2): 241-251.
화장품 방부제로서 Grapefruit Seed Extract의 효과
최은영, 김유정
The effect of Grapefruit Seed Extract by cosmetic preservatives
Eun-Young Choi, You-Jeong Kim
Grapefruit Seed Extract (GSE) have been well known as natural materials with its distinguished antimicrobial activities. In this study, antifungal and antimicrobial susceptibility of methyl paraben and propyl paraben, which are both synthetic and common cosmetic food grade preservatives, and also that of natural preservatives were tested, and by measuring preservative quality of lotion formulation, possibility of replacement of existing synthetic preservatives with a natural preservative was investigate. From the results of the test with liquid culture medium revealed that GSE had the highest antimicrobial effect among the test resulting materials having Minimum Inhibitory Concentration (MIC) value. Therefore, from the results of the test, it was confirmed that all natural materials had higher level of antimicrobial activity, and base on this test result, relevant cosmetics were made and the possibility of a preservative was tested accordingly. From the results of the test, it was confirmed that there were antimicrobial activities which were higher level than that of existing synthetic preservatives or similar to it in all formulations that contained each of GSE and the results from the test displayed that there were antimicrobial activities in a lively fashion at 0.03 %, 0.1 %, 0.1 % concentration, respectively. Also, from the results of the test of preservative quality according to mixture use of essential oil, it was unable to confirm the rising effects caused by mixture use, for it had displayed similar results to the antimicrobial activity of mono oil. In consequence, it was concluded that GSE could replace existing synthetic preservative effectively.
Key words: Cosmetics, Natural preservatives, Synthetic preservatives, Antimicrobial test, GSE
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