Estudo calorimétrico da interação de álcoois com Saccharomyces cerevisiae a 298 K

Química Nova

Eloi A. Silva Filho²  Pedro L. O. Volpe¹ 

[1] ,Universidade Estadual de CampinasCampinas SP

关键词: calorimetry;    alcohols;    saccharomyces cerevisiae;   

DOI  :  10.1590/S0100-40421999000300003

来源: SciELO

【 摘 要 】

The calorimetric experiments based on technique breaking ampoule were carried out by measuring of the heat of solution of alcohol in isotonic solution (NaCl 0.10 M) and alcohol in suspension of Sc at 298 K. From these data the enthalpy of interaction alcohol with suspension of Sc (DtrsH°) was calculate by Hess law. In this study, the results indicate that the enthalpy of interaction of aliphatic alcohol (C2-C8) with suspensions of Sc is a process exothermic and becomes more exothermic with increasing of -CH2 group of alcohol in range -1,14 to -4,0 kJ.mol-1. We concluded that enthalpy of interaction shows a linear relationship with increasing of alcohol's lipophilicity, in agreement with Traube's rule.

【 授权许可】

CC BY-NC   
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