Author/Authors :
Nasouri Gazani، Maryam نويسنده Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran. , , Shariati، Shahab نويسنده Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran , , Rafizadeh، Ali نويسنده Department of Nursing & Midwifery, Rasht Branch, Islamic Azad University, Rasht, Iran. , , SafarzadehVishekaei، Mohammad Naghi نويسنده Department of Agronomy, Rasht Branch, Islamic Azad University, Rasht, Iran. ,
Abstract :
Plants re-emit a substantial fraction of their assimilated carbon into the
atmosphere as biogenic volatile organic compound. According to the presence
of relatively high amount of methanol in herbal distillates, finding different concentrations
of ethanol in such drinks is expectable, as several studies appeared
that produced ethanol by plants emits into the atmosphere as do methanol. In this
study, ethanol content of 30 industrial herbal distillates made by three different
companies was measured. For this purpose, some solutions with concentration of
10000 mg L-1 were prepared from ethanol and methanol separately as original
and internal standard sources that in continue, different concentrations of standards
were prepared from ethanol solution and after it, 50 ?L methanol solution was
added to all of the standards and samples as internal standard and then, all of
them were examined with GC. The obtained results indicated that some of the
herbal distillates contain ethanol. Maximum and minimum amount of ethanol
existed in Rosa damascena L., (rose water) with mean value 96.4 mg L-1 and
Salix aegyptiaca L., distillate (only one sample had 15.5 mg L-1 and in two other
samples were not seen) respectively, while most of the examined samples had
no ethanol. Presence of ethanol in some of the examined samples showed that
further study is necessary to achieve correct information about this subject.
