Microencapsulation of tocopherols in lipid matrix by spray chilling method

摘要: Abstract Microcapsules were prepared by spray chilling, using interesterified fat with no trans isomers fatty acids fully hydrogenated soybean oil and in the ratio of 70:30% w/w respectively, α-tocopherol as active ingredient. For this work we used a design four trials proportion Lipid: Core material (%) 90:10, 80:20, 95:5 85:15 coded A, B, C, D which subjected to storage for 180 days at three different temperatures (BOD 22 °C -18 °C freezer, absence light temperature 25±3 °C light) X- ray diffraction analysis (0, 60, 120, days) calorimetric measurements (time zero) performed. The results showed values encapsulation efficiency above 90%. Thermograms obtained DSC, zero time, differences between samples. patterns X-ray diffraction, very similar among tests found presence major peaks following angles 2θ = 19.3° d 4.6A, 22.8° 3.8A 23.1° 3.7A, appear be associated β polymorphic form. percentage crystallinity formulations over time was relatively low, below 30% significant difference due tests.