"Commercial scale" refers to gram scale production of a sialic acid in a single reaction. If you adored this information and you would certainly like to obtain more facts pertaining to manufacturer of sialic acid powder as Raw Material for beverages kindly browse through our own web site. In preferred embodiments, commercial scale refers to production of greater than about 50, 75, 80, 90 or 100, 125, 150, 175, or 200 grams. An expression cassette can be constructed for production of more than one protein. Transcription termination signals, enhancers, and other nucleic acid sequences that influence gene expression, can also be included in an expression cassette. For cells, saccharides, nucleic acids, and polypeptides of the invention, the term "isolated" refers to material that is substantially or essentially free from components which normally accompany the material as found in its native state.