In order to analyze main components of cosmetics by 13C-NMR, we have developed the compact and simplified information retrieval system by using IBM S/34.
The original data are consisted of about 500. These are standard spectra of raw materials mostly used in cosmetics.
The data base is composed of max 10 selected signals and its reproducibility, which characterize partial or total structure.
By changing signal matching allowance range according to each data base signal's reproducibility, we have successfully determined main components of cosmetics.
For example, analyzing several cosmetics by this useful method, despite some incorrect components answers, we are able to determine all its main components. These incorrect answers are considered to be due to the similarity of standard signals.
