Enhancing the nutritional and health value of beef lipids and their relationship with meat quality

Nigel D Scollan, Dirk Dannenberger, Karin Nuernberg, R I Richardson, Sian MacKintosh, Jean-Francois Hocquette, Aidan P Moloney

Research output: Contribution to journalArticle (Academic Journal)peer-review

127 Citations (Scopus)
948 Downloads (Pure)

Abstract

This paper focusses on dietary approaches to control intramuscular fat deposition to increase beneficial omega-3 polyunsaturated fatty acids (PUFA) and conjugated linoleic acid content, and reduce saturated fatty acids in beef. Trans-fatty acids in beef lipids are considered, along with relationships between lipids in beef and colour shelf-life and sensory attributes. Ruminal lipolysis and biohydrogenation limit the ability to improve beef lipids. Feeding omega-3 rich forage increases linolenic acid and long-chain PUFA in beef lipids, an effect increased by ruminally-protecting lipids. Increasing beef PUFA can alter flavour characteristics and shelf-life. Antioxidants, particularly α-tocopherol, stabilise high concentrations of muscle PUFA; however, additional antioxidants are required. Currently, the concentration of long-chain omega-3 PUFA achieved in beef lipids (except animals fed ruminally-protected lipids) falls below the limit considered by some authorities to be labelled as a source of n-3 PUFA. The mechanisms regulating fatty acid isomer distribution in bovine tissues remain unclear. Further enhancement of beef lipids requires greater understanding of ruminal biohydrogenation.
Original languageEnglish
Pages (from-to)384-394
Number of pages11
JournalMeat Science
Volume97
Issue number3
Early online date6 Mar 2014
DOIs
Publication statusPublished - Jul 2014

Keywords

  • Beef
  • Nutrition
  • Meat quality
  • Fatty acids
  • Health

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