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Published on: November 29, 2013
Preparation of Lactobacilli for Dietary Uses
1Department of Food Science, North Carolina State University, Raleigh, North Carolina 27650.
Abstract:
Increased use of lactobacilli as dietary supplements has emphasized the need for preparations of those cultures that possess the attributes of cell viability. resistance to bile and capability of establishing in the intestinal tract. Incompatibility of different species of lactobacilli may limit development of products designed to overcome objectionable, or impart improved flavor to cultured foods. Stresses that are imposed on cultures during their preparation and distribution must minimize damage to cells which would detract from the foregoing characteristics.
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Preparation of Amides
The DCC-promoted synthesis of amides begins with the protonation of DCC by carboxylic acid. The protonation makes it a better acceptor. Next, the addition of carboxylate to the protonated carbodiimide gives a reactive acylating agent.
Subsequently, the amine acts as a nucleophile that attacks the acylating agent to form a tetrahedral intermediate. In the...
Preparation of Nitriles

