differential extraction


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differential extraction

[‚dif·ə′ren·chəl ik′strak·shən]
(chemical engineering)
Theoretical limiting case of crosscurrent extraction in a single vessel where feed is continuously extracted with infinitesimal amounts of fresh solvent; true differential extraction cannot be achieved.
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OTCQB: PBIO) ("PBI" and the "Company"), a leader in the development and sale of broadly enabling, pressure cycling technology ("PCT")-based sample preparation solutions to the worldwide life sciences industry, today announced the development of a two-step, PCT-enhanced method for the selective differential extraction of male or female DNA from mixtures of sperm and vaginal epithelial cells recovered from cotton swabs.
This method, originally applied to the process of differential extraction of male/female DNA from a mixed forensic sample, has broad application in a wide variety of biological sample processes for analysis and identification.
The more we use the unit and explain its operation to our clients--and show them the "before" and "after" comparisons--the greater is our level of comfort in setting reasonable standards for how-clean-is-clean, Correlation of the ATP readings with CFUs has been attempted by various researchers, but it must be re-evaluated with each circumstance and is a complicated procedure involving filtration of the samples and differential extraction of somatic ATP and microbial ATP.
Promega announces the new automated capabilities of the Differex[TM] Differential Extraction System.
By contrast, the automated Differex method makes it possible to process up to 40 differential extraction samples in less than 5 hours, reducing total processing time by over 70%.
Currently, the laboratory procedure to perform this tedious DNA processing technique, referred to differential extraction, involves numerous laboratory-based, labor-intensive techniques that are subject to contamination and human error.
This patent, entitled "Absorption-Enhanced Differential Extraction Device", and developed by researchers at the University of Washington and at Micronics, Inc.
This patent, entitled Microfabricated Differential Extraction Device and Method, covers key technologies that Micronics is commercializing.
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