Dilution rate and pH effects on the conversion of oleic acid to trans C18:1 positional isomers in continuous culture

Journal of Dairy Science

Volumn 88, Issue 12, 2005, Pages 4334-4341

  AbuGhazaleh, A A ^a,b   Riley, M B ^a   Thies, E E ^a   Jenkins, T C ^a  

^a CLEMSON UNIVERSITY   (United States)

^b SOUTHERN ILLINOIS UNIVERSITY   (United States)

Author keywords

Biohydrogenation; Dilution rate; Oleic acid; pH

Indexed keywords

BACTERIA (MICROORGANISMS);

EID: 29144512354     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(05)73120-9     Document Type: Article

References (30)

1. AbuGhazaleh, A. A., D. J. Schingoethe, A. R. Hippen, and K. F. Kalscheur. 2003. Milk conjugated linoleic acid response to fish oil supplementation of diets differing in fatty acid profiles. J. Dairy Sci. 86:944-953.
2. AbuGhazaleh, A. A., D. J. Schingoethe, A. R. Hippen, and L. A. Whitlock. 2002. Feeding fish meal and extruded soybeans enhances the conjugated linoleic acid (CLA) content of milk. J. Dairy Sci. 85:624-631.
3. Bauman, D. E., B. A. Corl, and D. Peterson. 2003. The biology of conjugated linoleic acids in ruminants. Pages 146-173 in Advances in Conjugated Linoleic Acid Research. J.-L. Sebedio, W. W. Chrisite, and R. Adlof, ed. AOCS Press, Champaign, IL.
4. Baumgard, L. H., B. A. Corl, D. A. Dwyer, A. Saebo, and D. E. Bauman. 2000. Identification of the conjugated linoleic acid isomer that inhibits milk fat synthesis. Am. J. Physiol. 78:R179-R184.
5. Beaulieu, A. D., J. K. Drackley, and N. R. Merchen. 2002. Concentrations of conjugated linoleic acid (cis-9, trans-11-octadecadienoic acid) are increased in tissue lipids of cattle fed a high-concentrate diet supplemented with soybean oil. J. Anim. Sci. 80:847-861.
6. Bessa, R. J., B. J. Santos-Silva, J. M. R. Ribeiro, and V. A. Portugal. 2000. Reticulo-rumen biohydrogenation and the enrichment of ruminant edible products with linoleic acid conjugated isomers. Livest. Prod. Sci. 63:201-211.
7. Blankson, H., J. A. Stakkestad, H. Fagertun, E. Thom, J. Wadstein, and O. Gudmundsen. 2000. Conjugated linoleic acid reduces body fat in overweight and obese humans. J. Nutr. 130:2943-2948.
8. De Veth, M. J., and E. S. Kolver. 2001. Diurnal variation in pH reduces digestion and synthesis of microbial protein when pasture is fermented in continuous culture. J. Dairy Sci. 84:2066-2072.
9. Gaynor, P. J., R. A. Erdman, B. B. Teter, J. Sampugna, A. V. Capuco, D. R. Waldo, and M. Hamosh. 1994. Milk fat yield and composition during abomasal infusion of cis or trans octadecenoates in Holstein cows. J. Dairy Sci. 77:157-165.
10. Griinari, J. M., D. A. Dwyer, M. A. McGuire, D. E. Bauman, D. L. Palmquist, and K. V. V. Nurmela. 1998. Trans-octadecenoic acids and milk fat depression in lactating cows. J. Dairy Sci. 81:1251-1261.
11. Harfoot, C. G., and G. P. Hazlewood. 1988. Lipid metabolism in the rumen. Pages 285-322 in The Rumen Microbial Ecosystem. P. N. Hobson, ed. Elsevier Applied Science Publishers, London, UK.
12. Hoover, W. H., C. R. Kincaid, G. A. Varga, W. V. Thayne, and L. L. Junkins. 1984. Effects of solids and liquid flows on fermentation in continuous cultures. IV. pH and dilution rate. J. Anim. Sci. 58:692-699.
13. Jenkins, T. C., V. Fellner, and R. K. McGuffey. 2003. Monensin by fat interactions on irons fatty acids in cultures of mixed ruminal microorganisms grown in continuous fermentors fed corn or barley. J. Dairy Sci. 86:324-330.
14. Kemp, P., R. W. White, and D. J. Lander. 1975. The hydrogenation of unsaturated fatty acids by five bacterial isolates from the sheep rumen, including a new species. J. Gen. Microbiol. 90:100-114.
15. Kepler, C. R., and S. B. Tove. 1967. Biohydrogenation of unsaturated fatty acids. 3. Purification and properties of a linoleate Δ9-cis, Δ11-trans-isomerase from Butyrivibrio fibrisolvens. J. Biol. Chem. 242:5686-5692.
16. Kopecny, J., J. F. Jurcuk, and S. Bartos. 1983. The effect of pH and 1,4-dithiothreitol on the adhesion of rumen bacteria. Folia Microbiol. (Praha) 28:130-133.
17. Kramer, J. K. G., V. Fellner, M. E. R. Dugan, F. D. Sauer, M. M. Mossoba, and M. P. Yurawecz. 1997. Evaluating acid and base catalysts in the methylation of milk and rumen fatty acids with special emphasis on conjugated dienes and total trans fatty acids. Lipids 32:1219-1228.
18. Latham, M. J., J. E. Storry, and M. E. Sharpe. 1972. Effects of low-roughage diets on the microflora and lipid metabolism in the rumen. Appl. Microbiol. 24:871-877.
19. Loor, J. J., W. H. Hoover, T. K. Miller-Webster, J. H. Herbein, and C. E. Polan. 2003. Biohydrogenation of unsaturated fatty acids in continuous culture fermenters during digestion of orchardgrass or red clover with three levels of ground corn supplementation. J. Anim. Sci. 81:1611-1627.
20. Martin, S. A., G. Fonty, and B. Michalet-Doreau. 2002. Factors affecting the fibrolytic activity of the digestive microbial ecosystems in ruminants. Pages 1-17 in Gastrointestinal Microbiology in Animals. S. A. Martin, ed. Research Signpost, Trivandrum, India.
21. Mosley, E. E., G. L. Powell, M. B. Riley, and T. C. Jenkins. 2002. Microbial biohydrogenation of oleic acid to trans isomers in vitro. J. Lipid Res. 43:290-296.
22. Ostrowska, E., M. Muralitharan, R. F. Cross, D. E. Bauman, and F. R. Dunshea. 1999. Dietary conjugated linoleic acids increase lean tissue and decrease fat deposition in growing pigs. J. Nutr. 129:2037-2042.
23. Piperova, L. S., J. Sampugna, B. B. Teter, K. F. Kalscheur, M. P. Yurawecz, Y. Ku, K. M. Morehouse, and R. A. Erdman. 2002. Duodenal and milk trans octadecenoic acid and conjugated linoleic acid (CLA) isomers indicate that postabsorptive synthesis is the predominant source of cis-9-containing CLA in lactating dairy cows. J. Nutr. 132:1235-1241.
24. Proell, J. M., E. E. Mosley, G. L. Powell, and T. C. Jenkins. 2002. Isomerization of stable isotopically labeled elaidic acid to cis and trans monoenes by ruminal microbes. J. Lipid Res. 43:2072-2076.
25. Russell, J. B., and D. B. Dombrowski. 1980. Effect of pH on the efficiency of growth by pure cultures of rumen bacteria in continuous culture. Appl. Environ. Microbiol. 37:537-543.
26. SAS. 2000. Users Guide: Statistics, Version 8, 18th Ed. SAS Inst., Inc., Cary, NC.
27. Slyter, L. L., M. P. Bryant, and M. J. Wolin. 1966. Effect of pH on population and fermentation in a continuously cultured rumen ecosystem. Appl. Microbiol. 14:573-578.
28. Teather, R. M., and F. D. Sauer. 1988. A naturally compartmented rumen simulation system for the continuous culture of rumen bacteria and protozoa. J. Dairy. Sci. 71:666-673.
29. Van de Vossenberg, and K. N. Joblin. 2003. Biohydrogenation of C18 unsaturated fatty acids to stearic acid by a strain of Butyrivibrio hungatei from the bovine rumen. Lett. Appl. Microbiol. 37:424-428.
30. Yang, W. Z., K. A. Beauchemin, and D. D. Vedres. 2002. Effects of pH and fibrolytic enzymes on digestibility, bacterial protein synthesis, and fermentation in continuous culture. Anim. Feed Sci. Technol. 102:137-150.