Abstract: The present invention relates to artificial skin having structure and properties by age, and more specifically to artificial skin having structure and properties, for which effective analysis and application are possible on the basis of age of the skin, as the human skin can be replicated according to age by simple control in the internal structure of properties such as height and width, and a method for manufacturing the same.

Abstract: The present invention relates to a method for preparing hydrocolloid having a diverse range of hydrophobicity, and more particularly, to a method for preparing hydrocolloid having a diverse range of hydrophobicity including preparing a hydrophobic hydrocolloid molecule by introducing a hydrophobic molecular group to a hydrocolloid molecule, and gelation by adding the hydrophobic hydrocolloid molecule to a pure hydrocolloid molecule. According to the present invention, a hydrophobic molecule is capable of being stably introduced without decomposing a hydrocolloid molecule during a synthesis process for introducing the hydrocolloid molecule, and hydrocolloid having a diverse hydrophobicity range is capable of being prepared depending on a mixing ratio.