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Effect of hot air gradient drying on quality and appearance of beef jerky
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NSTL
Elsevier
The quality and appearance of beef jerky during hot air gradient drying were investigated. The temperatures were sequentially increased from 40 degrees C to 50 degrees C-60 degrees C, and the corresponding drying times were 0.5 h-1 h-2.5 h, 0.5 h-2 h-1.5 h, 1 h-1 h-2 h and 1 h-2 h-1 h in 4 groups. With increasing drying temperature and time, the shear force, yellowness (b*) and metmyoglobin of the samples increased, and moisture content (MC), lightness (L*), redness (a*), oxymyoglobin and heme content of the samples decreased. After drying at 60 degrees C, the lower MC, shear force, b* and metmyoglobin content and the higher L*, a*, oxymyoglobin and heme content of the samples that were dried in the group 4 (40 degrees C-1 h, 50 degrees C-2 h and 60 degrees C-1 h) process were observed. In combination with the visual appearance, the samples that were dried in the group 4 process exhibited enhanced quality and appearance.
Beef jerkyHot air gradient dryingQualityAppearance