Fortifikasi Nanoemulsi Vitamin A Terenkapsulasi pada Flakes Berbasis Ubi Kayu
Oktaviantari, Dani Kunti
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Vitamin A is unstable when exposed to light, oxygen, and air so that it can be oxidized easily. Nanoemulsification and encapsulation technique may solve the problems by protecting vitamin A from environmental conditions. The objectives of this research were to study the characterisatics of encapsulated vitamin A nanoemulsion and the effect of fortification of vitamin A on the characteristics of fortified cassava flour and flakes. Vitamin A (retinyl palmitate) was fortified in the forms of encapsulated nanoemulsion and free compound. Vitamin A was encapsulated using maltodextrin and whey protein as the coating materials by the spray drying technique. Vitamin A content was measured by HPLC. Encapsulated vitamin A nanoemulsion had an averaged moisture content of 3.00 % and particle size of 246,1 nm. Fortification of cassava flour with 1.55 ppm encapsulated vitamin A nanoemulsion increased its vitamin A content, but did not influence its moisture content, colour, and whiteness index. Fortification of encapsulated vitamin A nanoemulsion to cassava flakes did not influence moisture content and physical characteristics of cassava flakes. Untrained panelists could still identify the presence of additional vitamin A, either in the form of encapsulated nanoemulsion or free compound, in fortified cassava flakes, although it was added in a small quantity. Cassava flakes fortified with encapsulated vitamin A nanoemulsion were preferred by untrained panelists, especially when consumed with milk. Cassava flakes with serving size of 45 gram could contribute to 18.33 % of recommended daily intake of vitamin A.