"bioactivities" - 1 õppematerjal

Liha töötlemine

Processes of protein that numerous bioactive peptides are gener- digestion for generation of peptides from ated from food proteins, such as milk, soy, meat proteins include gastrointestinal diges- fish, and meat proteins (Korhonen and tion, aging, fermentation, and protease treat- Pihlanto 2003, 2007; Pihlanto and Korhonen ment (Fig. 24.5). 2003; Mine and Shahidi 2005; Gobbetti et al. Meat proteins are attacked by proteolytic 2007). Representative bioactivities of such enzymes (e.g., pepsin, trypsin, chymotripsin, peptides are summarized in Table 24.4. elastase, and carboxypeptidase) during gas- Of such bioactive peptides, angiotensin trointestinal digestion (Pihlanto and Korhonen I-converting enzyme (ACE) inhibitory pep- 2003). Although there has been no clear evi- tides have been studied most extensively dence that bioactive peptides are generated (Vermeirssen et al. 2004; Meisel et al. 2005)