We have tested the stability of paeoniflorin, a new cosmetic ingredient, extracted from the roots of Paeoniae lactiflora. The stability of aqueous paeoniflorin solution at pH 3, 5 and 7 varied by adding buffer solution was tested at 0℃, 25℃, 40℃, and 65℃. The test was performed with or without UV light. The solution of paeoniflorin was stable at pH 3.0, however, the recovery rate of paeoniflorin was 40% at pH 7.0. The stability of paeoniflorin solution was decreased as the pH of paeoniflorin solution was increased by pH 7.0. The effect of storage temperature of paeoniflorin solution shows that the stability of paeoniflorin solution was decreased as the temperature was increased. The stability of paeoniflorin was rather good under UV light than the condition given above 40℃. The stability of paeoniflorin in W/O emulsions shows similar pattern to that of aqueous solution.

도입한 작약 92계통중 12계통은 조기 고사하거나 생육이 불량하였고 80계통 중 65계통의 개화하였다. 조기개화계통으로는 9616, 9646, 9671등이 있었고 만기개화계통으로는 9632, 9638, 9658등이 있었다. 9651, 9655, 9662, 9677등은 절화용으로 좋았다. 9645, 9653은 semi-double형으로 독특하였고 9635는 백색과 황색의 겹꽃으로 아름다웠다. 9637, 9645, 9670은 키 큰 화단용으로 좋을 뿐 아니라 뿌리수량이 매우 높아 다수성 계통으로 평가되었다. 9613, 9628, 9635, 9642, 9655, 9680은 paeoniflorin 고함량 계통이었다. 이런 다수성 계통 및 Paeoniflorin 고함량 계통은 약용작약품종의 육종자원으로도 이용될 수 있을 것이며 9637, 9645, 9676, 9677등은 수량과 약효성분이 적절하여 관상용과 약용을 겸한 겸용품종으로 이용 가능성을 보였다.