Fat volatiles tracers of grass feeding in sheep

Priolo, Alessandro; Cornu, Agnès; Prache, Sophie; Krogmann, M.; Kondjoyan, Nathalie; Micol, Didier; Berdagué, Jean‐Louis

doi:10.1016/s0309-1740(03)00136-0

Cited by 85 publications

(92 citation statements)

References 19 publications

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“…Concentrates tend not to contain any terpene or lipoxygenase (except for the soyabean meal, that contains lipoxygenase), and therefore feeding concentrates will dilute the tissue concentration of these compounds (Young et al, 1997;Liu, 1999). In agreement with Young et al (1997) and Priolo et al (2004), 2,3-octanedione proved to be a good indicator of green herbage feeding, diversified or not. The lowest 2,3-octanedione raw value in cut-green herbage or pasture-fed animals was 2.5 times higher than the highest one in hay-fed animals.…”

Section: --supporting

confidence: 53%

“…Volatile compounds were extracted from the adipose tissue using a dynamic headspace method using a helium purge flow of 80 ml/min. Headspace volatiles were absorbed onto Tenax, desorbed at 2008C and analysed by gas chromatography-mass spectrometry with a Supelco SPB5 capillary column as described by Priolo et al (2004).…”

Section: Analysis Of Volatile Compoundsmentioning

confidence: 99%

“…Therefore, efforts have been made in recent years to establish methods to directly trace green herbage feeding in herbivore products (Coulon and Priolo, 2002;Prache et al, 2005;Karaoui and De Baerdemaeker, 2007). Skatole, 2,3-octanedione and terpenes have been proposed as possible biomarkers of pasture feeding in ruminant products (Young et al, 1997;Priolo et al, 2004;Martin et al, 2005). Young et al (1997) observed that 2,3-octanedione was not found in meat from sheep fed on grain, and suggested that it could be a good indicator of pasture feeding.…”

Section: Introductionmentioning

confidence: 99%

“…Research efforts have been made to elucidate the mechanisms and factors governing skatole production and accumulation in ruminants' fat in order to reduce unpleasant pastoral flavour (Lane and Fraser, 1999;Schreurs et al, 2007;Priolo et al, 2009), and in order to study the reliability of the skatole determination in fat as an indicator of pasture feeding (Priolo et al, 2004, Prache et al, 2009. Skatole is a product of tryptophan degradation in the rumen.…”

Section: Introductionmentioning

confidence: 99%

“…The terpene fingerprints of muscle lipid fractions allowed Cornu et al (2001b) to identify four groups of steers, three of which had been fed on pasture and the fourth on maize silage. By analysing terpenes in subcutaneous fat, Priolo et al (2004) were able to identify lambs finished on pasture from lambs finished on concentrate. The study of terpene fingerprinting in ruminant meat products is complicated by the diversity of production systems in terms of different animal management systems through to slaughter, which is compounded by a range of slaughter ages.…”

Section: Introductionmentioning

confidence: 99%

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Traceability of grass feeding in beef: terpenes, 2,3-octanedione and skatole accumulation in adipose tissue of young bulls

Serrano

Cornu

Kondjoyan³

et al. 2011

Animal

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The development of analytical methods to verify the production system of meat products requires the identification of biomarkers that can trace the product's origin, and secondly the factors that govern the deposition of these markers in animal tissue need to be defined. In this study, 2,3-octanedione, skatole and terpenes were selected as biomarkers, and their deposition was investigated in bull calves reared under three different strategies. All of the animals were reared indoors until approximately 150 days of age. They were suckled twice a day by their mothers, and both calves and cows had free access to cocksfoot hay. Then the first two groups of animals were kept indoors, suckled by their mothers twice a day and received either cocksfoot hay (HL) or freshly cut-green herbage (GL) and a limited quantity of concentrate. The third group of calves (PH) was kept on pasture with their mothers and offered concentrate ad libitum. The pasture supporting the PH animals was highly diversified, containing several terpene-rich plant species, whereas the herbage for the GL animals contained no species known to be aromatic. Perirenal and subcutaneous adipose tissues were analysed for volatile compounds. The perirenal fat was found to be more responsive to the treatment and a more reliable substrate than the subcutaneous adipose tissue. Higher levels of 2,3-octanedione ( P , 0.05) were found in PH and GL than in HL fat (6.56, 6.51 and 5.77 area arbitrary units, respectively, in perirenal fat), confirming the ability of this molecule to trace green herbage feeding. Skatole was detected in the perirenal and subcutaneous fat of all the animals. Animals receiving high concentrate level (PH group) presented lower ( P , 0.05) skatole values (5.83 area arbitrary units in perirenal fat) than animals receiving low concentrate level (HL and GL groups, 6.23 and 6.71 area arbitrary units, respectively, in perirenal fat). Terpenoids, and especially sesquiterpenes, were found at higher levels and diversities in the PH than in the GL and HL animals. Two monoterpenoids allowed group discrimination considering perirenal or subcutaneous fat without distinction, whereas 11 and 5 sesquiterpenoids from perirenal and subcutaneous fat, respectively, allowed it.

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Section: --supporting

confidence: 53%

Section: Analysis Of Volatile Compoundsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Traceability of grass feeding in beef: terpenes, 2,3-octanedione and skatole accumulation in adipose tissue of young bulls

Serrano

Cornu

Kondjoyan³

et al. 2011

Animal

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Neodymium Alkoxides: Synthesis, Characterization and Their Combinations with Dialkylmagnesiums as Unique Systems for Polymerization and Block Copolymerization of Ethylene and Methyl Methacrylate

et al. 2002

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Terpene profiles in Cantal and Saint‐Nectaire‐type cheese made from raw or pasteurised milk

Cornu

Kondjoyan²,

Martin

et al. 2005

J Sci Food Agric

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Terpene profiles in cheese can be considered a 'terroir' fingerprint as the information contained in it should enable the pastures on which the animals were fed to be recognised. Yet a certain elasticity of the signature must be taken into account when determining authentication strategies, since products acknowledged as containing a common signature may have undergone certain procedures, such as cheese making and milk pasteurisation, that could have potentially altered their terpene profiles. In this study, Cantal and Saint-Nectaire-type cheeses were made from both raw and pasteurised milk from the same herd of dairy cows that had been grazed on natural grassland. Cheeses from raw and pasteurised milk were made from the same milking on the same days. Cantal and Saint-Nectaire-type cheeses were made on 4 different days, alternatively over four weeks. The terpenes in the cheese fat were analysed by dynamic headspace/gas chromatography/mass spectrometry. A great diversity of monoterpenes, sesquiterpenes and oxygen-containing derivatives were identified. The major terpenes identified in most cheeses were β-caryophyllene, α-and β-pinene and limonene. Milk pasteurisation did not induce changes in the terpene profile of the cheese. Significant differences (p < 0.001) were observed between Cantal and Saint-Nectaire cheeses: α-pinene, β-myrcene and β-phellandrene were, respectively, three, five and five times more abundant in Cantal cheese, while tricyclene, α-phellandrene and geraniol were found exclusively in Cantal cheese. In contrast, unidentified sesquiterpenes with retention indices (KI) = 1342 and 1511, α-cubebene, longifolene and γ -elemene were more abundant or exclusively found in Saint-Nectaire cheese. A significant relationship with the date of milking (p < 0.01) was observed for α-pinene and tricyclene in Cantal, for β-myrcene, δ-3-carene, p-cymene and α-terpinene in Saint-Nectaire cheese.

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Fat volatiles tracers of grass feeding in sheep

Cited by 85 publications

References 19 publications

Traceability of grass feeding in beef: terpenes, 2,3-octanedione and skatole accumulation in adipose tissue of young bulls

Traceability of grass feeding in beef: terpenes, 2,3-octanedione and skatole accumulation in adipose tissue of young bulls

Neodymium Alkoxides: Synthesis, Characterization and Their Combinations with Dialkylmagnesiums as Unique Systems for Polymerization and Block Copolymerization of Ethylene and Methyl Methacrylate

Terpene profiles in Cantal and Saint‐Nectaire‐type cheese made from raw or pasteurised milk

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