Current And Future Status

Bioreactor systems for the continuous production of peptides by a hydrolysis of proteins have also been developed. Release of peptides can be monitored by a peptide sensor, which is composed of aminopeptidase and amino acid oxidase (52). Peptides can be synthesized in a bioreactor system using synthetic reaction of proteases. Aspartame can be synthesized by this method.

Many biologically active peptides of food origin have been found by using sensitive in vitro assay systems. Although it is quite probable that milk-derived peptides may have teleological functions for newborns, only a few of these peptides have been demonstrated to be effective after oral ingestion. For those peptides having truly desirable functions for human health, methods to increase their availability, such as the enhancement of absorbability or half-life, should be explored. Although their specific activities are usually lower than those of endogenous biologically active peptides, those derived from food proteins sometimes show new and unexpected structure-activity relationships.

Recombinant DNA technology has been used to produce and improve pharmacologically useful peptides in microbial, plant, and animal cells. Production of heterogenous proteins in plants or milk by the transgenic technique is an especially promising method for the production of food protein. The amino acid composition and physical properties of food proteins can be improved by the site-directed mutagenesis technique. Furthermore, it will be possible to introduce biologically active peptide sequences into food proteins and to remove allergenic sequences from them.

The Mediterranean Diet Meltdown

The Mediterranean Diet Meltdown

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