Abstract
The aim of this study was to evaluate patatin, a major storage protein in potato tuber, as a precursor of bioactive peptides based on in silico approaches. In silico proteolysis of patatin using 16 proteases released numerous bioactive peptides exhibiting antioxidant, angiotensin-I converting enzyme (ACE) inhibitory, dipeptidyl peptidase (DPP)-IV inhibitory, glucose uptake, neuropeptide inhibitory and ion flow-regulating capacities. Chymotrypsin C released the most bioactive sequences from patatin compared with other proteases. In addition, the results of PeptideRanker demonstrated that a number of di- and tripeptides derived from patatin possessed great potential as bioactive peptides. Practical Applications Patatin is a major protein in potato fruit juice, which is regarded as a by-product of potato starch industry. Effective conversion of patatin into high value-added ingredients will significantly improve its potential for food application and elevate its commercial value. This study provides a theoretical basis for development of patatin as a high value-added and biofunctional ingredient in the food industry.
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