Partial inhibition of cholesterol oxides formation in frozen fish pre-treated with a plant extract
2009
Lebovics, Vera | Lugasi, Andrea | Hóvári, Judit | Aubourg, Santiago P.
7 páginas, 3 tablas, 5 figuras
Show more [+] Less [-]The formation of cholesterol oxide products (COPs) in frozen horse mackerel (Trachurus trachurus) fillets was studied. The effect of pre-treating the fish by soaking (45 min) in either of two concentrations of the aqueous solution of an antioxidant plant extract prior to the freezing step was determined. The fish fillets were sampled immediately after freezing and at intervals along 12 months of frozen storage (−20 °C). Two control groups consisting of untreated and water-treated fish were stored and sampled under the same conditions. During the experiment, qualitative analysis revealed the formation of the following COPs: 7-hydroxy-cholesterol, 7β-hydroxy-cholesterol and 7-keto-cholesterol. All treatment groups showed an increase (P < 0.05) in the content of all three COPs with storage time. As a result of pre-freezing antioxidant treatment, COPs formation was reduced (P < 0.05) in comparison with both control samples. This partial inhibition was consistent with a longer shelf-life time as revealed by sensory analysis
Show more [+] Less [-]The work was funded by the Academy of Sciences (Hungary)-CSIC (Spain) Program (Project 2001 HU 0011), the Hungarian Ministry of Education (NKFP 1 ⁄ 016 ⁄ 2001, ‘Sze´ chenyi’ Project) and the Comisión Interministerial de Ciencia y Tecnología (CICyT; Spain) (Project ALI 99-0869)
Show more [+] Less [-]Peer reviewed
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