In the present study, we reported the essential oils chemical composition and antibacterial activities of the aerial parts of Ajuga chamaecistus Ging. ex Benth. Subsp. Scoparia (Boiss.) Rech.f. thatwere collected duringMay 2013 and April 2014 and extracted by SDE (simultaneous distillation–extraction) and Clevenger apparatus. GC/MS analysis of the plant essential oils led to the identification ...

In the previous laboratory experiment, we saw how the intermolecular forces between molecules determined the boiling point of a liquid. Distillation was one method which could be used to separate (or purify) chemical compounds. Unfortunately, distillation is not always a practical method to employ for purifications. Large molecules can have extremely high boiling points, even under reduced pres...

The trial was conducted to explore the essential oil production potential of Murraya exotica under Faisalabad conditions through various extraction methods viz. solvent extraction, steam distillation, and supercritical fluid extraction (SCFE). SCFE was found to be the most efficient method for the extraction of good quality essential oil from M. exotica flowers. Gas chromatography-mass spectrom...

Cost-effective methods are needed to identify the presence and distribution of tritium near radioactive waste disposal and other contaminated sites. The objectives of this study were to (i) develop a simplified sample preparation method for determining tritium contamination in plants and (ii) determine if plant data could be used as an indicator of soil contamination. The method entailed collec...

‘IT0STUDY PROTEIN METABOLISM with special reference to tyrosine as well as to study the deranged metabolism of aromatic compounds in phenylketonuria and similar disorders, quantitative determination of urinary phenols is desirable. Volterra (1) measured three phenolic fractions in the urine by distillation. Phenols have been measured quantitatively after ethyl acetate extraction by Bray and Tho...

Background 2,3-Butanediol (2,3-BDO) is a synthetic chemical compound that also can be produced by biomass fermentation, which is gaining share in the global market as an intermediate product for numerous applications, i.e. as liquid fuel or fuel additive. Several metabolic engineering fermentation strategies to enhance the production of 2,3-BDO were developed. However, the recovery of 2,3-BDO f...

Snu-Yao Tsai et al., (2011) isolated the essential oils from the dried rhizomes of Curcuma aromatica salisb, Curcuma longa and Curcuma sichuanensis using simultaneous steam distillation and solvent extraction apparatus. Antioxidant studies were also carried out for these essential oils. Effectiveness for scavenging 1,1diphenyl-2-picrylhydrazyl radicals was found to be less in Curcuma aromatica ...

The investment and annual costs for a separation of aromatic hydrocarbons from a naphtha feed (~10 % aromatics) can be 35 to 70 % lower for an extraction with ionic liquids compared to an extraction with sulfolane. Aromatic hydrocarbons (benzene, toluene, ethyl benzene and xylenes) and C4 C10 aliphatic hydrocarbons are normally separated by liquid extraction, extractive distillation or azeotrop...

The present study describes a procedure to isolate essential oils from Rosmarinus officinalis L. using simultaneous distillation–extraction (SDE). can be used for medicinal purposes, as well in the cooking and cosmetics industries. SDE technique extraction combines steam distillation combined with continuous solvent or co-solvent mixture, providing faster extractions low volumes. effect of natu...