Minyak sereh wangi (Citronella oil) adalah salah satu minyak atsiri komersial Indonesia yang diperoleh melalui proses penyulingan. Citronella mengandung esensial dengan komponen geraniol (20-40%), citronellal (25-50%), dan citronellol (10-15) menimbulkan aroma, sehingga dapat digunakan sebagai repellent atau pengusir nyamuk. insektisida alami murah efektif, juga aman praktis, dikembangkan menja...

It has long remained a challenge in catalysis to synthesize technical hierarchical nanosized zeolites without growth modifiers and binders. Herein, we report facile synthetic route directly prepare binderless Al-β zeolite shaped form, with retained acidity, sufficient mechanical strengths. The preparation process consists of two steps, where an nanopowder is first using tetraethyl orthosilicate...

The requirement for developing an instrumental method analysis of volatile compounds responsible the aroma that supports work sensory panel test virgin olive oils is a matter great importance. In this paper, five laboratories participated in collaborative study within EU H2020 OLEUM project to develop peer interlaboratory harmonized SPME-GC-MS determination oil positive attributes (e.g. fruity)...

The aim. to study the therapeutic influence of new pessaries Melanizol based on metronidazole and tea tree oil background model “chemical” vaginitis in female rats.
 Materials methods. effect was studied rats "chemical" with using argentum nitrate, which provokes not burdened by infection. Against vaginitis, general condition animals, dynamics body weight, morphological composition periphe...

A comprehensive mixed-solvent electrolyte model has been extended to calculate liquid– liquid equilibria in water–organic salt systems. Also, it has been applied to calculate phase equilibria and speciation in strongly associating systems such as sulfuric acid/oleum (H2SO4+SO3+H2O) in the entire concentration range. The model combines an excess Gibbs energy model with detailed speciation calcul...

Rockets and Feathers? Petroleum Product Price Movements “Shooting up like a rocket, drifting downward like a feather in the wind,” or so goes the perception of petroleum product prices. This became the focus of public attention world over in 2008, when the international price of oil surged in the first six months, only to fall dramatically to a third of its peak value in the following five mont...