|Sensory Acceptability and Shelf life of Prebiotic Pineapple Juice with Gum Arabic (Acacia Senegal) Addition
Lee Mei Kei1, Yusnita Hamzah1*, HayatiAdilinMohdAbd Majid 2, and Tuan Nurul Nazihah Tuan Azlan1
1School of Food Science and Technology, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia 2Faculty of Hotel and Tourism Management, Universiti Teknologi MARA (Terengganu), Malaysia
ABSTRACT: Gum Arabic (GA) is a soluble dietary fiber exudate attained from Acacia Senegal has potential as a prebiotic agent in foods. This study was conducted to develop prebiotic pineapple juice using four different percentage of GA (Acacia Senegal) (0%, 4%, 8% and 12% of GA) in the juice. Sensory evaluation was conducted using an acceptance test and the most accepted formulation was chosen based on color, odour, viscosity, taste and overall acceptability attributes. From this study, the sample with 4% of GA incorporation in the pineapple juice was selected and further analyzed for its physicochemical and microbiological properties during chill storage (4 Â± 1Â°C) for 9 weeks. Results showed that this sample retained the physicochemical quality for 9 weeks of storage except for redness, yellowness, turbidity and pH. At the end of the storage period, the mean of total plate count (TPC) and mould and yeast count (MYC) were recorded as 0.25 log CFU/ml and 3.83 log CFU/ml, respectively. However, the microbial loads were maintained at an acceptable level until two months (8 weeks) of chill storage. As a conclusion, the development of prebiotic pineapple juice by adding 4% of GA was feasible due to its high sensory acceptance and ability to retain its overall quality during chill storage.
KEYWORDS: Gum Arabic, Acacia Senegal, prebiotic, pineapple juice Article
CORRESPONDENCE: Yusnita Hamzah