I think, Alginate beads is the best. You may use either alginate-starch or calcium-alginate or sodium alginate with skim milk or bentonite-Na alginate microcapsule.

Microencapsulation of bacteria: A review of different technologies and their impact on the probiotic effects

https://doi.org/10.1016/j.ifset.2014.09.010Get rights and content

Highlights

•The article summarizes the most important and new technologies applied in probiotic encapsulation.

•An overview of the materials used in these technologies is given, paying special attention to advantages and disadvantages.

•Our work is the first time that a review described the results obtained using encapsulated probiotic in various pathologies.

Abstract: Probiotic based products are associated with many health benefits. However, the main problem is the low survival of these microorganisms in food products and in gastrointestinal tract. Providing probiotics with a physical barrier is an efficient approach to protect microorganisms and to deliver them into the gut. In our opinion, microencapsulation is one of the most efficient methods, and has been under especial consideration and investigation. However, there are still many challenges to overcome with respect to the microencapsulation process. This review focuses mainly on the methodological approach of probiotic encapsulation including materials and results obtained using encapsulated probiotic in food matrices and different pathologies in animal models.

Encapsulation Technology to Protect Probiotic Bacteria, DOI: 10.5772/50046 ,

Crit Rev Food Sci Nutr. 2013;53(9):909-16. doi: 10.1080/10408398.2011.573152.Encapsulation of probiotic bacteria in biopolymeric system.

Abstract: Encapsulation of probiotic bacteria is generally used to enhance the viability during processing, and also for the target delivery in gastrointestinal tract. Probiotics are used with the fermented dairy products, pharmaceutical products, and health supplements. They play a great role in maintaining human health. The survival of these bacteria in the human gastrointestinal system is questionable. In order to protect the viability of the probiotic bacteria, several types of biopolymers such as alginate, chitosan, gelatin, whey protein isolate, cellulose derivatives are used for encapsulation and several methods of encapsulation such as spray drying, extrusion, emulsion have been reported. This review focuses on the method of encapsulation and the use of different biopolymeric system for encapsulation of probiotics.

Bio-encapsulation can be cheaply and simply done with phaseolus vulgaris or other heavy starches paste in various stages of cooking to allow various release times -as well- with the same capsule, if needed. Gelatin in different stages can be used as well. The cooking of certain cereals give also sort of plasmas. Certain medications are slowly released inside the body using the same method. Commercial Matrixes designed for this purpose can be expensive.

The appropriate use of heavy starches is beneficial in diabetes management. The technique of slow release capsules is in development now, and implies a great deal of hope in medicine, as well as in agriculture. At the Universidad Nacional Agraria in Lima, Peru, i have seen slow release management in fertilization of soils. Can also be used in water management. Various levels of Encapsulation into Encapslation is also used.

Bio-encapsulation can be cheaply and simply done with phaseolus vulgaris or other heavy starches paste in various stages of cooking to allow various release times -as well- with the same capsule, if needed. Gelatin in different stages can be used as well. The cooking of certain cereals give also sort of plasmas. Certain medications are slowly released inside the body using the same method. Commercial Matrixes designed for this purpose can be expensive. The appropriate use of heavy starches is beneficial in diabetes management. The technique of slow release capsules is in development now, and implies a great deal of hope in medicine, as well as in agriculture. At the Universidad Nacional Agraria in Lima, Peru, i have seen slow release management in fertilization of soils. Can also be used in water management. Various levels of Encapsulation into Encapslation is also used.