How Can the Probiotics Be Shielded From Stomach’s Acid?

by Rishika Gupta on  September 30, 2018 at 1:38 PM Research News
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Probiotics can now be delivered to the desired location - the intestine without getting corroded by stomach acids. The researchers have created a protective gel sphere that may offer the probiotics a safer route. The results of this study are published in the journal of ACS Sustainable Chemistry & Engineering.
 How Can the Probiotics Be Shielded From Stomach’s Acid?
How Can the Probiotics Be Shielded From Stomach’s Acid?

Probiotics are living organisms and have beneficial effects when they colonize the body, assuming they can stay alive long enough to do so. Probiotic treatments are packed with bacteria, but once swallowed, their numbers are dramatically diminished by the stomach's acidity, lowering the chances of therapeutic effect. In previous work, scientists have attempted to protect probiotics in the stomach by encapsulating them in alginate, a gummy polymer produced by algae, like fruit trapped in a gelatin mold. Alginate isn't the ideal treatment ingredient though, because it can break down easily. To beef up the stability of alginate, Hu Tang, Fenghong Huang, and colleagues wanted to see whether adding cellulose, a fibrous biocompatible polymer with excellent stability could help.

To make the probiotic shield, the researchers mixed dilute solutions of cellulose and alginate, then added the "friendly" bacteria to that mixture. The final step was to drip this brew into a solution of calcium chloride. The researchers dropped the probiotic globs into an acidic stomach-like environment and found that the gel held onto the bacteria. By contrast, in a simulated intestine, which has a more neutral pH, the bacteria gel swelled, releasing the probiotics. They say that the next step is to test the encapsulation system in animals.

Source: Eurekalert

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