Dietary PUFA Intervention Affects Fatty Acid- and Micronutrient Profiles of Beef and Related Beef Products
| Autor: | Walter Kienast, Elke Hagemann, Dirk Dannenberger, Karin Nuernberg, Gerd Nuernberg, Andrea Herdmann |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Health (social science)
Rapeseed food.ingredient beef products Silage Soybean meal trace elements Plant Science lcsh:Chemical technology Health Professions (miscellaneous) Microbiology Article food Linseed oil lcsh:TP1-1185 Food science chemistry.chemical_classification PUFA fat-soluble vitamins CLA beef Fatty acid food and beverages Micronutrient food.food chemistry Corned beef Food Science Polyunsaturated fatty acid |
| Zdroj: | Foods, 2(3): 295-309 Foods Volume 2 Issue 3 Pages 295-309 Foods, Vol 2, Iss 3, Pp 295-309 (2013) |
| Popis: | The study investigated the dietary impact of 18:3n-3 vs. 18:2n-6 on fatty acid- and micronutrient concentration of beef muscle and the extent of diet- and processing-induced changes of lipid- and micronutrient concentrations of beef products made thereof (German Corned beef (GCB), tea sausage spread (TSS), scalded sausage (SS)). Beef and beef products were obtained from German Holstein bulls which either received a control diet consisting of maize silage and concentrate with soybean meal (41%), or an experimental diet of grass silage and concentrate plus rapeseed cake (12%) and linseed oil (3%). The study revealed that upon an 18:3n-3 vs. 18:2n-6 intervention the amounts of 18:3n-3, EPA and Σn-3 LC-PUFA were significantly increased by 2.6, 2.3 and 1.7 fold, respectively. Experimental diet significantly increased β-carotene contents, and the γ-tocopherol contents were decreased. During beef processing, n-3 PUFA from beef were found to be product-specifically transferred into the corresponding beef products. 18:3n-3 and Σn-3 LC-PUFA contents were found to be 1.4 and 1.5 times higher in GCB from grass silage- than maize silage-fed bulls. The trace element contents in GCB (iron, copper, zinc, selenium) were not affected by the diet however γ-tocopherol contents were decreased by experimental diet. In conclusion, dietary n-3 PUFA were completely transferred into beef products unaffected by beef processing conditions. |
| Databáze: | OpenAIRE |
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