Given the positive results obtained with respect to the analyzed microbiological metrics (i.e., the absence of pathogens) and sensory stability up to 21 days for the 100% CO2 treatment, only this group was subjected to sensory evaluation at 28 days. According to the average scores given by the panel, the samples did not suffer significant changes (P b 0.05) with respect to the examined attributes at any point during the storage period, demonstrating the stability of meat stored in a packaging system containing 100% CO2 for up to 28 days at 1 °C (Table 4).
Atmospheres containing CO2 effectively increase the storage period of meat products by reducing microbial growth (O'Keeffe & Hood, 1980). Given this fact and in agreement with the present study, Scholtz et al. (1992) examined the shelf life of pork Longissimus thoracis muscles stored for 21 days at 0 °C in different packaging systems (A: 25% CO2 and 75% O2, B: vacuum and C: 100% CO2). This group reported that treatment C was rated the highest in terms of odor, and the shelf life was longer than for the other systems.
Given the positive results obtained with respect to the analyzed microbiological metrics (i.e., the absence of pathogens) and sensory stability up to 21 days for the 100% CO2 treatment, only this group was subjected to sensory evaluation at 28 days. According to the average scores given by the panel, the samples did not suffer significant changes (P b 0.05) with respect to the examined attributes at any point during the storage period, demonstrating the stability of meat stored in a packaging system containing 100% CO2 for up to 28 days at 1 °C (Table 4).Atmospheres containing CO2 effectively increase the storage period of meat products by reducing microbial growth (O'Keeffe & Hood, 1980). Given this fact and in agreement with the present study, Scholtz et al. (1992) examined the shelf life of pork Longissimus thoracis muscles stored for 21 days at 0 °C in different packaging systems (A: 25% CO2 and 75% O2, B: vacuum and C: 100% CO2). This group reported that treatment C was rated the highest in terms of odor, and the shelf life was longer than for the other systems.
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