Thứ bảy, 20/04/2024 | 20:12
ABSTRACT A STUDY ON FUNCTIONNAL FOOD PRODUCTION FROM BANANA STARCH AND MICROENCAPSULATED PROBIOTIC Nguyen Thi Quynh Mai*, Dao Thi My Linh, Kieu Yen Vy, Son Thien Nga, Nguyen Dang Khoa Ho Chi Minh City University of Food Industry *Email: [email protected] Unripe banana fruits are considered to be rich in resistant starch content. This type of starch possesses potential health benefits. This study was conducted to produce a type of functional food from Laba banana starch and a microencapsulated probiotic species, Lactobacillus plantarum. The obtained banana starch had a resistant starch content of 22.49 ± 0.58%, showing a positive effect on the growth of L. plantarum compared with the control MRS medium without carbon source. L. plantarum was microencapsulated with reconstituted skim milk by spray-drying method at inlet temperature of 130 °C and outlet temperature of 60-70°C. The encapsulation efficiency was 77.88 ± 1.08% and this process provided a high survival probiotic rate of 80.52% when passing through simulated digestive system. Banana starch and microencapsulated bacteria powder were mixed to obtain a final product. A combination of banana starch and microencapsulated bacteria powder at the ratio of 2:1 (w/w) was scored highest in sensory evaluation. The density of L. plantarum of this product was 1.15×109 CFU/g; protein and carbohydrate content were 10.8% and 76.7%, respectively and total fat content was lower than 0.3%. Microencapsulated probiotic powder supplemented with banana starch exhibited a higher viability (89.95%) at the end of the gastrointestinal tract compared with that of microencapsulated probiotic without supplemented starch. Keywords: Banana starch, Lactobacllus plantarum, microencapsulation, probiotic, skim milk. |
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