Effect of Aloe Extract on the Quality and Sensory Properties of Fermented Skim Milk

In order to improve the quality of fermented skim milk, the effects of adding aloe extract on the physicochemical properties and sensory quality of fermented skim milk were investigated. Three levels of aloe extract (0.1%, 0.2% and 0.3%) were used. The pH value, titratable acidity, water-holding capacity, dehydration shrinkage, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging capacity, Lactobacillus count, color, viscosity and sensory evaluation of fermented milk were measured. The experimental results showed that the addition of aloe extract improved the problem of the low acidity of fermented skim milk during refrigeration, increased the viscosity, imparted better texture to it, improved the water-holding capacity, decreased the dehydration shrinkage, and increased the cold storage stability, the Lactobacillus count and the antioxidant capacity. However, the flavor and appearance of the fermented skim milk with aloe extract decreased.