https://blog.gongquiz.com/2021/10/14/%ea%b2%80%ed%99%94%eb%90%a0-%ec%88%98-%ec%97%86%eb%8a%94-%ec%a7%80%eb%b0%a9%ec%a7%88unsaponifiable-lipids%ec%97%90-%ec%86%8d%ed%95%98%eb%8a%94-%ec%84%b1%eb%b6%84%ec%9d%80-%ec%8b%9d%ed%92%88/