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Study Results from University of Quebec Update Understanding of Purification Technology

June 17, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Purification Technology. According to news reporting out of Chicoutimi, Canada, by NewsRx editors, research stated, "Electrodialysis with ultrafiltration membrane (EDUF) has been successfully used to separate bioactive peptides from various food protein hydrolysates. Nevertheless, EDUF process was found to be affected by permeate and feed pHs, electric field strength and membrane materials, molecular weight cuf-off (MWCO) as well as surface area."

Our news journalists obtained a quote from the research from the University of Quebec, "In the present study, the effect of two EDUF cell configurations was examined on different electrodialytic parameters; first with one feed and two recovery compartments and second with two feed and one recovery compartments. The EDUF cell configurations had significant effect on peptide migration rate and selectivity such as amino acid composition and peptide molecular weight profiles of the permeate fractions obtained after 6 h of EDUF treatment. The configuration 1 led to the higher total peptide migration rate of 6.00 +/- 0.12 g/(h m(2)) in comparison to 4.41 +/- 0.20 g/(h m(2)) for configuration 2. However, in configuration I, the local electric field in the hydrolysate compartment decreased linearly throughout EDUF process which limited peptide migration after about 2 h of EDUF treatment."

According to the news editors, the research concluded: "Amino acid analysis of permeate fractions showed that anionic amino acids primarily Glu, Tau, Met and Phe were concentrated in both peptide recovery compartments of configuration 1, while cationic amino acids like Arg and Lys were mainly concentrated in peptide recovery compartment of configuration 2."

For more information on this research see: Electrodialytic separation of peptides from snow crab by-product hydrolysate: Effect of cell configuration on peptide selectivity and local electric field. Separation and Purification Technology, 2014;127():29-38. Separation and Purification Technology can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier -; Separation and Purification Technology -

Our news journalists report that additional information may be obtained by contacting S. Suwal, Univ Quebec Chicoutimi, Dept. of Fundamental Sci, Lab Bioact LASEVE, Chicoutimi, PQ G7H 2B1, Canada. Additional authors for this research include C. Roblet, A. Doyen, J. Amiot, L. Beaulieu, J. Legault and L. Bazinet (see also Purification Technology).

Keywords for this news article include: Quebec, Canada, Peptides, Proteins, Chicoutimi, Amino Acids, Purification Technology, North and Central America

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Source: Life Science Weekly

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