Seaweed Inclusion in Finishing Lamb Diet Promotes Changes in Micronutrient Content and Flavour-Related Compounds of Raw Meat and Dry-Cured Leg (Fenalår)

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Understanding metabolic phenomena accompanying high levels of yeast in broiler chicken diets and resulting carcass weight and meat quality changes.

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The relationship between volatile compounds, metabolites and sensory attributes: A case study using lamb and sheep meat

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The relationship between volatile compounds, metabolites and sensory attributes: A case study using lamb and sheep meat

The aim of this study was to use a flavoromics approach to identify key compounds responsible for sensory flavor of lamb and sheep meat. The investigation was confined to volatile compounds from adipose tissue and metabolites in lean meat using headspace-gas chromatography/mass spectrometry (HS-GC/MS) and solvent extraction-GC/MS, respectively. Partial least square regression analysis supported with variable selection were used to correlate identified compounds to sensory attributes. Several metabolites involved in energy production via Krebs cycle and Embden-Meyerhof-Parnas pathway contributed to gamy and grass flavor. Gamy flavor was strongly and positively correlated with aspartic acid, cyclo-leucine, gluconic, citric and pyruvic acid. Gluconic and pyruvic acid together with formic acid, β-caryophyllene, 3-methylphenol, 2-ethylfuran showed strong positive correlation with grass flavor. Sugars (glucose, mannose-6-phosphate and myo-inositol) were negatively correlated with gamy and grass flavor, suggesting a role in suppression of off-flavors in lamb and sheep meat. Bitter flavor was strongly correlated with hypotaurine and (E)-2-pentenal. Metallic flavor and bitterness were influenced by almost the same compounds. Acidic flavor was not explained by any compound identified, while rancidity was not detected by panelists. Finally, the flavor components describing grass and bitter flavor could be used to discriminate animals from different production systems

The relationship between volatile compounds, metabolites and sensory attributes: A case study using lamb and sheep meat

The aim of this study was to use a flavoromics approach to identify key compounds responsible for sensory flavor of lamb and sheep meat. The investigation was confined to volatile compounds from adipose tissue and metabolites in lean meat using headspace-gas chromatography/mass spectrometry (HS-GC/MS) and solvent extraction-GC/MS, respectively. Partial least square regression analysis supported with variable selection were used to correlate identified compounds to sensory attributes. Several metabolites involved in energy production via Krebs cycle and Embden-Meyerhof-Parnas pathway contributed to gamy and grass flavor. Gamy flavor was strongly and positively correlated with aspartic acid, cyclo-leucine, gluconic, citric and pyruvic acid. Gluconic and pyruvic acid together with formic acid, β-caryophyllene, 3-methylphenol, 2-ethylfuran showed strong positive correlation with grass flavor. Sugars (glucose, mannose-6-phosphate and myo-inositol) were negatively correlated with gamy and grass flavor, suggesting a role in suppression of off-flavors in lamb and sheep meat. Bitter flavor was strongly correlated with hypotaurine and (E)-2-pentenal. Metallic flavor and bitterness were influenced by almost the same compounds. Acidic flavor was not explained by any compound identified, while rancidity was not detected by panelists. Finally, the flavor components describing grass and bitter flavor could be used to discriminate animals from different production systems

Replacing soybean meal with rapeseed meal and faba beans in a growing-finishing pig diet: Effect on growth performance, meat quality and metabolite changes

Rapeseed meal and faba beans (RSM/FB) can serve as an alternative to imported soybean meal 35 (SBM). In this study, forty Norwegian crossbred ([Landrace x Yorkshire] x Duroc) growing36 finishing pigs (108.7±4.2 kg final BW) were fed a diet with either SBM or RSM/FB as protein 37 sources. RSM/FB increased feed conversion ratio (P=0.04) in the finishing period, reduced 38 lightness (P=0.04) and yellowness (P=0.004) of meat, changed amounts of individual fatty acids, 39 but not of total SFA, MUFA and PUFA. Importantly, RSM/FB reduced the glucose level (P < 40 0.05) in meat. Lower pyroglutamic acid (P = 0.06) in RSM/FB indicate lower oxidative stress in 41 pre-rigor muscle cell. Increased abundance of free amino acids, sweet tasting metabolites, reduced 42 warmed-over flavor and flavor attributes indicated desirable properties of RSM/FB meat. To 43 conclude, RSM/FB in pig diet supported a high growth performance and carcass quality 44 comparable to SBM and had a positive effect on meat quality.acceptedVersio