摘要:
The present invention is intended to provide an apparatus for screening protein crystallization conditions that can screen protein crystallization conditions efficiently by the vapor diffusion method using the sitting drop technique. In order to achieve the above-mentioned object, in an apparatus for screening protein crystallization conditions that screens protein crystallization conditions using the sitting drop technique that is one of the techniques of protein crystallization to be carried out by the vapor diffusion method, an apparatus 2 for preparing a crystallization plate that includes a dispensing means for dispensing a protein solution and a crystallization solution in wells of the crystallization plate and a seal attachment unit that seals the wells that have been subjected to dispensation is connected to a protein crystal detection apparatus 5 that detects protein crystals produced in the crystallization plate in a thermostatic chamber that stores the crystallization plate that has been subjected to the dispensing in a predetermined environment. Accordingly, the crystallization plate is transferred automatically and thus screening is carried out efficiently and automatically.
摘要:
A melanin inhibitor comprising as the reactive component a cinnamic acid derivative of the formula (I) or (II): ##STR1## in which R' represents an acyl group having 2 to 6 carbon atoms, R.sub.1 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group or an alkenyl group, and R.sub.2 represents a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, a cycloalkyl group or an alkenyl group.The melanin inhibitors according to the invention are locally applied to affected portions such as of freckles and pigmentary deposits after sunburn without giving any stimulative or allergic troubles to the skin.
摘要:
A novel melanin inhibitor comprising as an active component a p-hydroxycinnamamide derivative of the following general formula (I) ##STR1## in which R.sub.1 represents a hydrogen atom or a 2-hydroxyethyl group, and R.sub.2 represents a hydroxymethyl group or a carboxyl group.The melanin inhibitor may take various forms such as a lotion, an emulsion, a cream, an ointment, a gel and the like, and it is locally applied onto affected parts such as spots and freckles on the skin, and a pigmental deposition after sunburn.
摘要:
A novel melanin inhibitor comprising as an active component a p-hydroxycinnamamide derivative of the following general formula (I) ##STR1## in which R.sub.1 represents a hydrogen atom or a 2-hydroxyethyl group, and R.sub.2 represents a hydroxymethyl group or a carboxyl group.The melanin inhibitor may take various forms such as a lotion, an emulsion, a cream, an ointment, a gel and the like, and it is locally applied onto affected parts such as spots and freckles on the skin, and a pigmental deposition after sunburn.