Effect of animal age and gender on fatty acid and elemental composition in Austrian beef applicable for authentication purposes
-
Adriána Bednárová
,
Ján Mocák
Abstract
The main aim of the present study was to find differences in the content of fatty acids and variations in elemental composition in beef samples of longissimus dorsi muscle related to cattle age and gender. A further goal was to describe interrelations among the selected variables (descriptors) characterising the samples. For this purpose, an extensive data table was compiled, which contains chemical descriptors specifying forty-six beef samples originating from four well-known Austrian grassland-based beef labels. The following descriptors were investigated: (a) concentrations of 33 fatty acids, (b) concentrations of 19 elements, (c) contents of dry-mass, protein, intramuscular fat, and ash, (d) total content of saturated fatty acids (SFA), mono-unsaturated fatty acids (MUFA), and poly-unsaturated fatty acids (PUFA), (e) total contents of omega-3 (n-3) and omega-6 (n-6) PUFA and their ratio. The correlation analysis provided a number of statistically significant correlations among the descriptors, which were concordant with the results of the principal component analysis and cluster analysis. Furthermore, the effect of age and gender of cattle (both acting as target factors) on the fatty acid content and elemental composition of beef was examined by analysis of variance (ANOVA) and appropriate non-parametric tests. Several important interrelations among the beef characteristics investigated were also discovered. Finally, the most relevant beef descriptors were utilised in linear discrimination analysis (LDA) for predicting the slaughter age of the cattle for beef authentication.
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© 2012 Institute of Chemistry, Slovak Academy of Sciences
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Articles in the same Issue
- Content of selected secondary metabolites in wild hop
- Continuous sorption of synthetic dyes on dried biomass of microalga Chlorella pyrenoidosa
- Sludge of wastewater treatment plants as Co2+ ions sorbent
- Effect of animal age and gender on fatty acid and elemental composition in Austrian beef applicable for authentication purposes
- Nutritional, antioxidant, and glycaemic characteristics of new functional bread
- Effects of enzymes and hydrocolloids on physical, sensory, and shelf-life properties of wheat bread
- Magnetic chains formed from tetra-coordinate Co(II) complexes
- Prediction of anti-tuberculosis activity of 3-phenyl-2H-1,3-benzoxazine-2,4(3H)-dione derivatives
- Experimental investigation of bubble and drop formation at submerged orifices
- Cadmium concentration stabilization in a continuous sulfate reducing bioreactor via sulfide concentration control
- Facile synthesis of gemini surface-active ATRP initiator and its use in soap-free AGET ATRP mini-emulsion polymerisation
- Bulgarian natural diatomites: modification and characterization
- Synthesis, characterisation, and DC conductivity of polyaniline-lead oxide composites
