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최선주(Sun Ju Choi),김소영(Soyoung Kim),정윤주(Yoonjoo Jeong),구창섭(Chang Sub Ku),하병집(Buungjhip Ha),채희정(Hee Jeong Chae) 한국생물공학회 2011 KSBB Journal Vol.26 No.1
The stability of cream containing lotus leaf extract (LLE) was evaluated. Stability pH and viscosity were measured at 3 different temperatures (25℃, 45℃ and 65℃), and at room temperature under the sun light at 2 day intervals during 12 days. The cleansing cream and foam cleansing containing the extract did not show a significant pH change at the different temperatures. However, the pH of the cleansing cream and foam cleansing containing LLE slightly decreased at 25℃. They showed a high stability at temperature conditions (45℃ and 65℃) and under the sun light condition. The cleansing cream and foam cleansing containing LLE did not show a significant viscosity change at 25℃, but had a tendency of decrease at 45℃ and 65℃. There was no significant offflavor and discoloration as well as physical changes such as creaming and cohesion at 25-65℃ and under the sun light condition. And this LLE could be used as a stable functional cosmetic material.