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 ...

Concentration and composition of monoterpenoids in plant tissue affects a variety of environmental and ecological issues such as plant defenses, plant classification, and phytotoxicity. Developing the techniques for extracting and estimating the concentration and composition of monoterpenoids must be speciesspecific because monoterpenoid storage location varies between species. Ashe juniper f,J...

Rourkela CERTIFICATE This is to certify that the thesis entitled, " Extraction of Essential oil using steam distillation " submitted by K. Satish kumar in partial fulfillments for the requirements for the award of Rourkela is an authentic work carried out by him under my supervision and guidance. To the best of my knowledge, the matter embodied in the thesis has not been submitted to any other ...

The problem of recovering ethylene and byproducts from the steam pyrolysis of light hydrocarbons is discussed. Opportunities for improved efficiency using distributed distillation, recycle coupling, heat pumping, and mixed refrigeration are presented. Emphasis is placed upon energy efficiency with potential savings in capital costs as applied to refrigerated processes.

The simulation and steady state operation of a vapor recompression pilot plant distillation column is studied in order to improve the thermal efficiency. A binary system of ethanol-water mixture is used. The simulation is carried through ASPEN PLUS version 9.3-1. Energy reduction of 89.26% is obtained comparing to the conventional distillation and the thermodynamic efficiency is improved from 1...

A microwave-assisted hydrodistillation protocol was modified to extract essential oils from leaves of Salvia triloba L. and Laurus nobilis L. The essential oils of these plants are generally obtained by hydrodistillation or steam distillation. The volatile compounds obtained by microwave-assisted hydrodistillation and hydrodistillation methods were analyzed by GC and GC/MS. Both distillation me...

A5 A PRELIMINARY to the detection and determination of cyanides in biologic materials, a separation by steam distillation is generally employed (1, 2). This may be carried out either in the presence of dilute acid or sodium bicarbonate. It has been stated that the former gives no distinction between the more and the less toxic of the cyanides and that the latter may be unreliable in this respec...

Simultaneous control of overhead and bottoms composition in a binary distillation column using reflux and steam flow as the manipulated variables often proves to he particularly difficult because of the interaction inherent in the process. The development of model based control ( M E ) theory in the past 20-25 years has provided a framework which caters for the above distillation control proble...

The oils obtained by hydrodistillation and steam distillation of the aerial parts of Stachys persica Gmel. and Stachys byzantina C. Koch grown in Iran were analyzed by GC/MS. The essential oil obtained by hydrodistillation of the aerial parts of S. persica was characterized by a high amount of non-terpenoid components of which methyllinoleate (27.7%), hexadecanoic acid (9.8%) and 6,10,14-trimet...