An Agilent Simulated Distillation (SIMDIS) system is described for quality control and monitoring of refinery processes. The system uses an Agilent 6890N gas chromatograph (GC) equipped with a programmable temperature vaporizer (PTV) inlet designed specifically for high temperature analysis. A simulated distillation software program that couples with the Agilent GC ChemStation provides an easy-...

A study of the influence of distillation system, oak wood type, and aging time on volatile compounds of cider brandy was carried out. Acetaldehyde and acetaldehyde diethyl acetal were influenced by distillation technology, oak wood type, and maturation time. The majority ester, ethyl ethanoate, increased during aging, the highest level of this ester being detected in spirits distilled by double...

The present study was aimed to impress the cytological, physiological, genetic, and morphological effects of essential oil obtained by hydro-distillation from Mentha longifolia (L.) HUDSON against maize seeds. These naturally occurred compounds can be used instead synthetic chemicals. To determine their biological activity, applied Zea mays L. seeds at different doses. It observed that germinat...

Determination of relative volatilities flavour compounds in hydro-alcoholic solutions is usually performed by time-consuming and costly standard methods such as the Gillespie dynamic recirculation method. This study tested a quick easy method with simple distillation apparatus for measuring empirical volatilities. A total 17 representative apple pear brandies were selected investigated their al...

Background & Aim: Elaeagnus angustifolia and Elaeagnus orientalis have a lot of medical utilization. In folk medicine, the fruit and flower of these plants are used as a tonic and antipyretic agent. The aim of the present study was to chemical analysis of volatile constituents of E. angustifolia and E. orientalis flowers.  Experimental: The...

Existing refinery distillation systems are highly energy-intensive, and have complex column configurations that interact strongly with the associated heat exchanger network. An optimisation approach is developed for existing refinery distillation processes. The optimisation framework includes shortcut models developed for the simulation of the existing distillation column, and a retrofit shortc...

The mosquito vector Aedes aegypti L., plays an important role in transmission of diseases including dengue, chikungunya and zika fever. In this study, citronella leaf oil extracted by hydro-distillation technique has been evaluated for its efficacy against vector. Citronella (100, 125, 150, 175 200 ppm) when tested, 150 ppm was found to be the effective larvicidal concentration 4th instar larva...

Alpinia monopleura is an endemic plant which widespread and abundant in Sulawesi. Nevertheless, previous studies have not studied the chemical compound biological activity. This study describes compounds antibacterial antioxidant properties of essential oils isolated from A. monopleura. The oil was obtained by hydro distillation method interpreted GCMS. Antibacterial were determined agar diffus...

In industry, many separation processes involve the separation of multicomponent mixtures using distillation. There are many distillation configurations that can carry out the same overall separation process. These configurations use an equal number of distillation columns, but they differ significantly in energy consumption. Therefore a major challenge for a practitioner is the identification o...