Production of Hydroxy Fatty Acids, Precursors of γ-Hexalactone, Contributes to the Characteristic Sweet Aroma of Beef.
ALOX15
COX
Japanese black cattle
fatty acids
lactone
lipidomics
quality
wagyu
Journal
Metabolites
ISSN: 2218-1989
Titre abrégé: Metabolites
Pays: Switzerland
ID NLM: 101578790
Informations de publication
Date de publication:
06 Apr 2022
06 Apr 2022
Historique:
received:
11
03
2022
revised:
28
03
2022
accepted:
30
03
2022
entrez:
21
4
2022
pubmed:
22
4
2022
medline:
22
4
2022
Statut:
epublish
Résumé
Aroma is an essential factor for meat quality. The meat of Japanese Black cattle exhibits fine marbling and a rich and sweet aroma with a characteristic lactone composition. The mechanism of lactone formation associated with beef aroma has not been elucidated. In this study, we examined the precursors of γ-hexalactone, an indicator of the sweet aroma of beef and identified the mechanism underlying γ-hexalactone production. A low-temperature vacuum system was used to prepare beef tallow from Japanese Black cattle and Holstein cattle. The odor components were identified using headspace-gas chromatography. The analysis revealed that γ-hexalactone, γ-dodecalactone, δ-tetradecalactone, and δ-hexadecalactone were present as sweet aroma components of beef tallow prepared from marbling and muscle. Since we previously reported that γ-hexalactone formation correlates with linoleic acid content in beef, we analyzed ten oxidized fatty acids derived from linoleic acid by liquid chromatography-triple quadrupole mass spectrometry and detected two hydroxy-octadecadienoic acids (9S-HODE and 13S-HODE) in beef tallow. Significant differences in arachidonic acid 15-lipoxygenase and cyclooxygenase protein expression levels among subcutaneous fat, intramuscular fat, and muscle tissue were observed. Our results suggest that the combination of linoleic acid and the expression of lipid oxidase derived from beef muscle and intramuscular fat produce hydroxy fatty acids that result in a sweet aroma.
Identifiants
pubmed: 35448519
pii: metabo12040332
doi: 10.3390/metabo12040332
pmc: PMC9028887
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : the Japan Racing Association
ID : (2020#55)
Organisme : Agriculture and Livestock Industries Co., Ltd.
ID : a project of developing technology for creating new businesses for domestic livestock and their products (2018-2020)
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