Enhancing storage and gastroprotective viability of Lactiplantibacillus plantarum encapsulated by sodium caseinate-inulin-soy protein isolates composites carried within carboxymethyl cellulose hydrogel
FOOD RESEARCH INTERNATIONAL(2024)
Abstract
Probiotics are subjected to various edible coatings, especially proteins and polysaccharides, which serve as the predominant wall materials, with ultrasound, a sustainable green technology. Herein, sodium caseinate, inulin, and soy protein isolate composites were produced using multi -frequency ultrasound and utilized to encapsulate Lactiplantibacillus plantarum to enhance its storage, thermal, and gastrointestinal viability. The physicochemical analyses revealed that the composites with 5 % soy protein isolate treated with ultrasound at 50 kHz exhibited enough repulsion forces to maintain stability, pH resistance, and the ability to encapsulate larger particles and possessed the highest encapsulation efficiency (95.95 %). The structural analyses showed changes in the composite structure at C - C, C - H, C - O, and amino acid residual levels. Rheology, texture, and waterholding capacity demonstrated the production of soft hydrogels with mild chewing and gummy properties, carried the microcapsules without coagulation or sedimentation. Moreover, the viability attributes of L. plantarum evinced superior encapsulation, protecting them for at least eight weeks and against heat (63 degrees C), reactive oxidative species (H 2 O 2 ), and GI conditions.
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Key words
Soy protein isolates,Lactiplantibacillus plantarum,Inulin,Encapsulation,Composites
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