Rapid triglyceride assay for use in pulp pitch control

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C424S769000, C162S071000, C162S072000, C162S091000

Reexamination Certificate

active

07067244

ABSTRACT:
Enzymatic methods are provided for determining the surface triglycerides content in a sample of wood pulp. The methods preferably comprise reacting triglycerides which are present on the surface of the wood pulp fibers in the sample in the presence of a lipase to form glycerol and fatty acids, and then determining the difference between the amount of free glycerol present in the sample and the amount of glycerol formed from said triglycerides. The method is useful as a quick, portable, accurate, and low cost assay for assessing the amount of triglycerides present at various sample points in pulp and paper mills, which advantageously serves as a diagnostic tool for use in controlling the undesirable deposition of pitch during the papermaking process.

REFERENCES:
patent: 4045297 (1977-08-01), Weeks et al.
patent: 4142938 (1979-03-01), Stavropoulos et al.
patent: 4223090 (1980-09-01), Mazza
patent: 4241178 (1980-12-01), Esders et al.
patent: 4245041 (1981-01-01), Denney
patent: 4259440 (1981-03-01), Gupta et al.
patent: 4273870 (1981-06-01), Mollering et al.
patent: 4309502 (1982-01-01), Lauderdale
patent: 4394445 (1983-07-01), Nix et al.
patent: 4636465 (1987-01-01), Itoh et al.
patent: 4713165 (1987-12-01), Conover et al.
patent: 4923796 (1990-05-01), Deneke et al.
patent: 5110724 (1992-05-01), Hewett
patent: 5176796 (1993-01-01), Irie et al.
patent: 5179021 (1993-01-01), du Manoir et al.
patent: 5221615 (1993-06-01), Modrovich et al.
patent: 5256252 (1993-10-01), Sarkar et al.
patent: 5278046 (1994-01-01), Johnson et al.
patent: 5597532 (1997-01-01), Connolly
patent: 5667634 (1997-09-01), Fujita et al.
patent: 5698667 (1997-12-01), Speaks et al.
patent: 5989392 (1999-11-01), Tang et al.
patent: 5989409 (1999-11-01), Kurnik et al.
patent: 6134952 (2000-10-01), Garver et al.
patent: 6242245 (2001-06-01), Amann et al.
patent: 6471826 (2002-10-01), Glover et al.
del Rio, et al., “Analysis of Pitch Deposits Produced in Kraft Pulp Mills Using a Totally Chlorine Free Bleaching Sequence,”J. Chromatogr A, 874(2):235-45 (Apr. 7, 2000) (Abstract Only).
Maister, “Growing Market for Industrial Enzymes” p. 16B, Atlanta Business Chronicle (Mar. 16-22, 2001).
Sigma Diagnostics Inc., Triglyceride (GPO-Trinder) Procedure No. 337 (1989, 1998 Sigma-Aldrich Co.).
Sigma Diagnostics Inc., Triglyceride (INT) Procedure No. 336 (1989, 1998 Sigma-Aldrich Co.).
“Lipids and Lipoproteins” pp. 496-506.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Rapid triglyceride assay for use in pulp pitch control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rapid triglyceride assay for use in pulp pitch control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rapid triglyceride assay for use in pulp pitch control will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3669805

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.