Thesis
Reformulation of Lipid Based Dairy Free Ready-to-use Complementary Food (RUCF): Storage Test with Arrhenius Approach and Physicochemical Analysis
Lipid-based dairy free RUCF is a ready to use complementary food made with local ingredients.
The important quality of the RUCF is the nutrient composition and physicochemical properties,
especially the oil separation and PV. With the problems encountered with oil separation in
previous study about development of lipid-based dairy free RUCF, this study will reformulate the
RUCF with adjusted compositions of MOCAF, TF, MBF, oil, and addition of water and MAG as an
emulsifier to prevent the oil separation during storage. This study aims to analyze the
physicochemical properties and stability of the reformulated RUCF. Two chosen formulations
with different ratios of palm and peanut oil were stored in 4°C, 30°C, and 40°C and assessed for
its color, oil separation, pH, PV, viscosity ,and Aw per week, then the estimation of shelf life was
calculated with arrhenius approach. The changes of color is noticeable between each
temperature, while the Aw exceeds the safe range due to the addition of water. The viscosity is
higher when stored at 4°C and lower at 40°C. The oil separation exceeded the shelf life limit after
14 days of storage at 30°C and 40°C. The pH decreases over time, while the Aw changes
irregularly depending on the temperature. The estimated shelf life was 7 days for every
temperature for formula 1, while 5 days for formula 2 stored at 4°C and 2 days for formula 2
stored at 30°C and 40°C. In conclusion, the reformulation affected the physicochemical
properties and shelf life of the RUCF.
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