The high degree of yellowness in
the 75% O2 + 25% CO2 group was likely due to the high O2 content
and consequently higher oxymyoglobin content in this treatment.
Unlike the results obtained in the present study, Vergara and Gallego
(2001) noted that in lamb, the L* value of Longissimus dorsi muscles
significantly increased over time in samples stored in either 20%
CO2 + 10% O2 + 70% N2 or 80% CO2 + 20% O2, with values ranging
from45.32 to 48.92. This observationwas likely due to protein denaturation,
which increased its dispersion of light (Insausti et al., 2001).
Furthermore, a* values decreased significantly in these atmospheres,
with values between 11.99 and 16.55. The reported b* values were
greater than in oxygen-free packages, ranging from 7.72 to 11.85. The
L* in the present study was similar to that observed by Luciano et al.
(2009) when assessing the color stability of the Semimembranosus
muscle of the same species stored in 80% O2 + 20% CO2 for 14 days
at 4 °C. Furthermore, Berruga, Vergara, and Gallego (2005) noted that
vacuum-packed samples exhibited greater color stability, noting that
L* and b* valueswere higher in the treatment containing high O2 levels,
whereas the a* values were lower.
The high degree of yellowness inthe 75% O2 + 25% CO2 group was likely due to the high O2 contentand consequently higher oxymyoglobin content in this treatment.Unlike the results obtained in the present study, Vergara and Gallego(2001) noted that in lamb, the L* value of Longissimus dorsi musclessignificantly increased over time in samples stored in either 20%CO2 + 10% O2 + 70% N2 or 80% CO2 + 20% O2, with values rangingfrom45.32 to 48.92. This observationwas likely due to protein denaturation,which increased its dispersion of light (Insausti et al., 2001).Furthermore, a* values decreased significantly in these atmospheres,with values between 11.99 and 16.55. The reported b* values weregreater than in oxygen-free packages, ranging from 7.72 to 11.85. TheL* in the present study was similar to that observed by Luciano et al.(2009) when assessing the color stability of the Semimembranosusmuscle of the same species stored in 80% O2 + 20% CO2 for 14 daysat 4 °C. Furthermore, Berruga, Vergara, and Gallego (2005) noted thatvacuum-packed samples exhibited greater color stability, noting thatL* and b* valueswere higher in the treatment containing high O2 levels,whereas the a* values were lower.
การแปล กรุณารอสักครู่..