Health Care : Current Reviews

Microencapsulation: A strategy to improve stability of probiotic organisms

3^rd Indo-Global Summit & Expo on Healthcare

October 05-07, 2015 New Delhi, India

Charu Gupta, Dhan Prakash and Sneh Gupta

Amity University, India RG PG College, India

Posters-Accepted Abstracts: Health Care: Current Reviews

Abstract:

Probiotics are live microbial feed supplements that beneficially affect the host by improving its intestinal microbial balance. Survival of probiotics in products is affected in dairy and fermented products by a range of factors including processing conditions, pH, acidification during storage in fermented products, hydrogen peroxide production, oxygen toxicity, storage temperatures, stability in dried or frozen form, poor growth in milk, lack of proteases to break down milk protein to simpler nitrogenous substances and compatibility with traditional starter culture during fermentation. Microencapsulation is an upcoming technique that improves the stability and survivability of the probiotic organisms. It is a process of immobilizing the bacterial cells within an encapsulating membrane that releases their contents at controlled rates under specific conditions. The microcapsule is composed of semi-permeable, spherical, thin and strong membranous walls. The bacterial cells are retained within the microcapsules with the nutrients and metabolites diffusing through the semi-permeable membrane easily. The most widely used matrix for microencapsulation is alginate, though gelatin and vegetable gum can also be used. Alginate beads increase the survival of probiotics by up to 80-95%. The most common techniques for microencapsulation are emulsification, extrusion and spray drying. Apart from bacteria, other substances such as acidulants, amino acids, antimicrobials, bases, colourants, edible oils, flavour, enzymes, flavour enhancing leavening agents, minerals, sugars, salts and vitamins are also encapsulated. A strategy to improve stability of probiotic organisms through microencapsulation will be presented.

Biography :

Email: charumicro@gmail.com