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Oxidation in HiOx-packaged pork Longissimus muscle predisposes myofibrillar and sarcoplasmic proteins to N-nitrosamine formation in nitrite-curing solution

Producción científica: Article › revisión exhaustiva

35 Citas (Scopus)

Resumen

The effect of meat protein in situ oxidation on the formation of N-nitrosodiethylamine (NDEA) was investigated. Fresh minced pork was untreated (Con) or treated with 700mg/kg α-tocopherol (Toc) or 300mg/kg tea polyphenols (PPE), packaged in a HiOx atmosphere (78.8% O2, 18.8% CO2, 2.4% N2), then stored at 2±1°C for up to 10days. Crude myofibrillar (MP) or sarcoplasmic (SP) protein (20mg/mL) extracted from stored meat was reacted with 43μM sodium nitrite at 80°C for 1h. Lipid oxidation was totally inhibited in PPE pork but increased in Con and Toc samples after 10days. There was significant protein oxidation (losses of sulfhydryls, formation of protein carbonyls) in both MP and SP in all samples during storage. However, the Con group suffered more extensive protein oxidation than Toc and PPE and produced more NDEA (P<0.05), indicating that protein oxidation promoted nitrosation.

Idioma originalEnglish
Páginas (desde-hasta)465-471
Número de páginas7
PublicaciónMeat Science
Volumen95
N.º3
DOI
EstadoPublished - 2013

Nota bibliográfica

Funding Information:
The research is financially supported by a grant from the National Natural Science Foundation China , ( 31071568 ). Special appreciation is extended to S.P. Suman for his technical assistance while author L. Ma was on her sabbatical study in the laboratory of Y.L. Xiong at the University of Kentucky where this research was initiated. Besides, the same appreciation was taken to the Agricultural Analysis Center of Tianjin Agricultural University which has provided GC-MC for determining N -nitrosamine.

Financiación

The research is financially supported by a grant from the National Natural Science Foundation China , ( 31071568 ). Special appreciation is extended to S.P. Suman for his technical assistance while author L. Ma was on her sabbatical study in the laboratory of Y.L. Xiong at the University of Kentucky where this research was initiated. Besides, the same appreciation was taken to the Agricultural Analysis Center of Tianjin Agricultural University which has provided GC-MC for determining N -nitrosamine.

FinanciadoresNúmero del financiador
National Natural Science Foundation of China (NSFC)31071568

    ASJC Scopus subject areas

    • Food Science

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