Characterization of antioxidant and angiotensin-converting enzyme inhibitory peptides derived from cauliflower by-products by multidimensional liquid chromatography and bioinformatics
Research output: Contribution to journal › Journal article › Research › peer-review
In the present paper, bioactive peptides from cauliflower by-products (leaves and stems) were investigated. Alcalase® protein hydrolysis time and pH conditions were optimized, then the hydrolysates were fractionated by preparative RP-HPLC into 12 fractions. Each fraction was tested for the ABTS (2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)), and DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity and for ACE (angiotensin-converting enzyme) inhibitor activity. The peptides in the most active fractions were identified by peptidomics technologies and screened for bioactivity by the use of bioinformatics. For ACE-inhibitor activity, two peptides were synthetized, APYDPDWYYIR and SKGFTSPLF, which provided an EC50 value of 2.59 μmol L−1 and 15.26 μmol L−1, respectively. For the ABTS radical scavenging activity, SKGFTSPLF and LDDPVFRPL were tested, and provided an EC50 of 10.35 μmol L−1 and 8.29 μmol L−1, respectively. For the DPPH radical scavenging activity, SKGFTSPLF and LRAPPGWTGR were tested and provided an EC50 of 8.2 μmol L−1 and 5.26 μmol L−1, respectively.
Original language | English |
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Journal | Journal of Functional Foods |
Volume | 44 |
Pages (from-to) | 40-47 |
Number of pages | 8 |
ISSN | 1756-4646 |
DOIs | |
Publication status | Published - 2018 |
Externally published | Yes |
- ACE-inhibitory peptides, Antioxidant peptides, Cauliflower waste, Peptidomics
Research areas
ID: 231310138