Research article summary (published 30 Oct 1999):

Glycolytic potential of red, soft, exudative pork longissimus muscle.

Full Abstract

Red, soft, exudative (RSE) pork is red as "normal" pork and exudative as PSE pork. The origin of RSE quality is unknown. In the present study, we determined whether the occurrence of RSE pork is related to the presence of the RN (Rendement Napole) gene. A glycolytic potential [= 2 x (glucose + glycogen + glucose-6-phosphate) + lactate] of > 180 micromol lactate/g of meat was used as indicator for presence of the RN gene. At 1 d postmortem, pork loin samples were collected at a commercial slaughter plant, and meat quality characteristics and glycolytic potential were determined. Glycolytic potential of RSE pork (n = 42) was higher (P < .01) than that of RFN (red, firm, nonexudative) pork (n = 25): 137 vs 110 micromol lactate/g of muscle. The glycolytic potential of PSE pork (n = 28) was 161 micromol lactate/g of muscle, which was higher (P < .01) than the glycolytic potential of RFN or RSE pork. Using a glycolytic potential of 180 micromol lactate/g of muscle as suggestive for the presence of the RN gene, four (10%) of the RSE samples were from RN carriers. By the same criterion, the PSE group contained nine (32%) RN gene carriers. These results suggest that the occurrence of RSE quality is not related to the presence of the RN gene.

Author information

Author/s: van Laack, R L (RL); Kauffman, R G (RG);

Affiliation: Department of Food Science and Technology, University of Tennessee, Agricultural Experiment Station, Knoxville 37901-1071, USA.

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.

Journal: Journal of animal science (J Anim Sci), published in UNITED STATES. (Language: eng)

Reference: 1999-Nov; vol 77 (issue 11) : pp 2971-3

Dates: Created 1999/12/21; Completed 1999/12/21; Revised 2006/11/15;

PMID: 10568466, status: MEDLINE (last retrieved date: 2/18/2009)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MeSH Headings (categories) shown below.

Analysis of Variance Animals Body Composition - genetics Glycolysis Hydrogen-Ion Concentration

Meat - standards Muscle, Skeletal - metabolism Quality Control Reference Standards Swine - genetics

Note: Bold headings indicate primary MeSH headings or qualifiers.

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