口香糖残基降解的试验研究

口香糖的主要成分是糖粉、糖浆以及胶基,前两者都是溶于水的,在口腔中咀嚼时会随着唾液慢慢溶化掉,所以经过人们咀嚼后吐出的主要是其中的胶基.口香糖胶基具有很强的黏合性,吐在地上不容易清除掉.胶基的成分比较复杂,主要是橡胶和碳酸钙.本文就某知名品牌口香糖胶基进行了剖析,并根据剖析结果对其进行了降解实验研究.     

QUANTITATIVE STRUCTURE-CARCINOGENIC ACTIVITY RELATIONSHIP OF METHYL, ALKYL, CYCLOPENTANO, CYCLOHEXANO POLYCYCLIC AROMATIC HYDROCARBONS AND CHOLANTHRENE SERIES

By applying the di-region theory, in this paper, the quantitative structure-carcinogenic activity relationship of methyl, alkyl, cyelopentano, cyelohexano polycyclic aromatic hydrocarbons (PAH) and cholanthrene series totalling 187 alkyl-substituted PAH compounds is established reasonably and systematically for the first time. The consistent ratio between calculation and experiment is more than 95%. In the metabolic course of methyl PAH, which one is the so-called "ultimate carcinogen", the bay-reglon carbonium ion situated on the angular ring or methylene carbonium ion produced from the methyl group, is still in dispute at present. Now, the afore-mentioned disputable viewpoints have been successfully integrated by the di-region theory.     

甲基、烷基、环戊并及环己并多环芳烃以及胆蒽系的定量结构致癌活性关系

本文运用双区理论首次合理而系统地建立了187个甲基、烷基、环戊并、环己并多环芳烃以及胆葸系的定量结构致癌活性关系,计算与实验的符合率达95％以上。甲基多环芳烃的代谢过程中,角环湾区阳离子及亚甲基阳离子孰是“终致癌剂”的问题,目前存在着争论。根据双区理论统一了上述事实。