1. STORAGE STABILITY OF OKARA SNACK BAR WITH RED PALM OIL
CHOCOLATE COATING AT AMBIENT AND ACCELERATED TEMPERATURES
Addiana Rashidah Azman1, Tan Choon Hui1
1
Faculty of Applied Sciences, UCSI University, No 1 Jalan Menara Gading, UCSI Heights, 56000, Cheras,
Kuala Lumpur
ABSTRACT
Okara, commonly known as the by product from soymilk production often discarded as waste by
the soy industry. Okara snack bar with red palm oil chocolate coating was developed using okara
and red palm oil. Storage stability of the okara snack bar with red palm oil chocolate coating was
assessed by storing the samples under two different temperatures; ambient temperature (25±1°C)
and accelerated temperature (37±1°C) for 30 days period. From the results obtained for both
temperature of storage, there were significant (p<0.05) changes in microbial growth for total plate
count test and yeast and mold count after 20 days in comparison to the initial value. There was
significant change in the enumeration of coliform after 30 days of storage (p<0.05) where the
microbial after 30 days of storage for the ambient temperature and accelerated temperature were
3.50 log10 CFU/g and 5.4 log10 CFU/g in comparison to the initial microbial count for both ambient
and accelerated storage condition. As for the physicochemical tests, there were no significant
difference recorded for pH value measurement and water activity in both temperature of storage
throughout the storage stability study period (p>0.05). There was a significant difference for both
microbial tests result and physicochemical tests result between the two temperatures (p<0.05).
However, in the difference from control sensory evaluation test, there were no significant
difference in the taste of the stored sample and the fresh sample recorded (p>0.05). Both of the
storage temperature resulted in unsatisfactory level of microbial growth but the samples were not
spoiled, suggesting, both temperatures are suitable for the storage of okara snack bar with red palm
oil chocolate coating for 30 days storage period.
