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Merck
  • Ageing and retail display time in raw beef odour according to the degree of lipid oxidation.

Ageing and retail display time in raw beef odour according to the degree of lipid oxidation.

Food chemistry (2017-10-19)
Virginia C Resconi, Mónica Bueno, Ana Escudero, Danielle Magalhaes, Vicente Ferreira, M Mar Campo
PMID29037691
ABSTRACT

This study aims to assess the changes in beef aroma over time when steaks from pre-aged knuckles are stored in retail display under high oxygen conditions for 15 or 22days in vacuum conditions. Odorous volatile compounds were analysed by solid-phase microextraction/gas chromatography-mass spectrometry. Results were grouped as low, medium and high oxidative groups according to thiobarbituric acid reactive substances values after 9days of display. The intensity of off-odours in the raw meat increased with ageing and display time and oxidative groups. Based on correlations between the variables and regressions of the compounds through display, eight compounds were proposed as odour shelf-life markers. Among them, five were most sensitive and precise in all oxidative groups: 1-hexanol in meat aged for 15days, ethyl- octanoate and 2-pentylfuran in meat aged for 22days, and pentanoic and hexanoic acids in the two studied ageing times.

MATERIALS
Product Number
Brand
Product Description
W342300
Sigma-Aldrich
trans-2-Undecenal, ≥95%, stabilized, FG
255653
Sigma-Aldrich
trans-2-Nonenal, 97%
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Sigma-Aldrich
trans-2-Heptenal, ≥95%, stabilized, FG
108383
Sigma-Aldrich
1,1,3,3-Tetramethoxypropane, 99%
115606
Sigma-Aldrich
Hexanal, 98%
57551-U
Supelco
SPME Fiber Assembly Kit, Assortment, StableFlex (1 cm), needle size 24 ga, Autosampler, pk of 4
57286-U
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SPME Fiber Assembly Kit, Assortment #2, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3
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SPME Fiber Assembly Kit, Assortment #4, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3
57325-U
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SPME Fiber Assembly Kit, Assortment #4, Fused Silica (1 cm), size 24 ga, Autosampler, pk of 3
57320-U
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SPME Fiber Assembly Kit, Assortment #2, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3
57284-U
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SPME Fiber Assembly Kit, Assortment, StableFlex (1 cm), needle size 23 ga, Autosampler, pk of 4
57285-U
Supelco
SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3
57550-U
Supelco
SPME Fiber Assembly Kit, Assortment, StableFlex (1 cm), needle size 24 ga, Manual Holder, pk of 4
57306
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SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3
57307
Supelco
SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3
57321-U
Supelco
SPME Fiber Assembly Kit, Assortment #2, Fused Silica (1 cm), size 24 ga, Autosampler, pk of 3
57324-U
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SPME Fiber Assembly Kit, Assortment #4, Fused Silica (1 cm), size 24 ga, Manual Holder, pk of 3
57362-U
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SPME Fiber Assembly Kit, Assortment #5, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 4
269956
Sigma-Aldrich
trans-2-Octenal, technical grade, 94%
57355-U
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SPME Fiber Assembly, 60 μm PEG, Metal Alloy (1 cm), needle size 23 ga, Manual Holder, pk of 3, purple hub
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Sigma-Aldrich
Phenylacetaldehyde, ≥95%, FCC, FG
148962
Sigma-Aldrich
Ethyl hexanoate, ≥99%
W331708
Sigma-Aldrich
2-Pentylfuran, ≥98%, FG
57902-U
Supelco
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57291-U
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