ScholarWorks@중앙대학교

초록

Lactiplantibacillus plantarum D-12 (LPD12), isolated from sea tangle kimchi, exhibits cholesterol-lowering, antioxidant, and antimicrobial activities, underscoring its strong potential as a functional probiotic. This study investigated a potential synbiotic encapsulation strategy using natural polysaccharides such as inulin (INL) and tragacanth gum (TG) as prebiotic wall materials to enhance the viability and processability of LPD12 during spray drying, compared to maltodextrin (MD). Optimal condition for MD encapsulation was 10% (MD10) and 86 °C inlet temperature. A composite wall material of MD, INL, and TG at a ratio of 7:2.7:0.3 (TG0.3) demonstrated approximately 1 log CFU/mL higher survival rate than MD10 after 50 days storage at 25 °C. TG0.3 also reduced water solubility and enhanced water absorption, thereby improving probiotic stability without compromising flowability or particle morphology. These findings suggest that synbiotic encapsulation with TG0.3 represents a promising protective strategy that not only provides significant protection for LPD12 but also is associated with potential prebiotic functionality, presenting a promising strategy for the commercial development of gut health-promoting probiotic products.

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