CATARACT extraction by application of low temperature has now been practised by us for nearly 2 years. The technical details of this method have been described in earlier papers, with reference to intumescent cataract (Krwawicz, 1961a,b). The application of the refrigerated cryoextractor to the cataractous lens produces an instantaneous freezing of the capsule and of the underlying mass, which ...

to study the mechanical and thermal parameters effective on quality and quantity of olive oil towards an extraction of highly pure oil, the velocity in rps of crushing rollers, at two levels of 6 and 12 (rps) along with the temperature of the mixing unit at three levels of 30, 45 and 60°c were taken into account. data, obtaind through a factorial experiment of randomized complete block design (...

Subcritical water extraction (SWE) technology has been used for the extraction of active compounds from different biomass materials with low process cost, mild operating conditions, short process times, and environmental sustainability. With the limited application of the technology to microalgal biomass, this work investigates parametrically the potential of subcritical water for high-yield ex...

A method for the determination of trace amounts of off-flavor compounds including 2-methylisoborneol, geosmin and 2,4,6-trichloroanisole in drinking water was developed using the stir bar sorptive extraction technique followed by thermal desorption-GC-MS analysis. The extraction conditions such as extraction mode, salt addition, extraction temperature, sample volume and extraction time were exa...

Lignin, a polyphenolic molecule, is a major constituent of flax shives. This polyphenolic molecular structure renders lignin a potential source of a variety of commercially viable products such as fine chemicals. This work compares the performance of different lignin isolation methods. Lignin from flax shive was isolated using both conventional alkaline extraction method and a novel experimenta...

Supercritical CO2 extraction of the pigments from Bixa orellana seeds was carried out in a flow apparatus at a pressure of 200 bar and a temperature of 40 oC at two fluid flow rates (0.67g/min and 1.12g/min). The efficiency of the extraction was low (only about 1% of the pigment was extracted). The increase in flow rate led to a decrease in pigment recovery. A large increase in recovery (from 1...

introduction: accumulation of free radicals could lead to permanent oxidative destruction of organisms by attacking macromolecules and organelles of the body, thus causing organism aging, fatigue and degenerative diseases. therefore, discovering and developing safe and non-toxic natural antioxidants has been an interesting topic in recent decades. compared to synthetic antioxidants, extracts fr...

A number of grades of agarose are available in which hydroxyethyl groups have been introduced into the agarose molecule. This substitution causes the agarose to gel at 30 o C and to melt at 65 o C-well below the melting temperature for most DNAs. These properties have been exploited to develop a simple technique for the recovery of DNA from gels (Weislander 1979). 1. Dissolve the low-melting-te...