Journal
FOODS
Volume 10, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/foods10030679
Keywords
antidiabetic; ACEI inhibitory; antioxidant; peptide; hydrolysis
Categories
Funding
- FEDER funds from the Spanish Ministry of Economy, Industry, and Competitiveness
- Ramon y Cajal postdoctoral contract
- [AGL2017-89381-R]
Ask authors/readers for more resources
This study focused on hydrolyzing orange seed proteins to obtain bioactive peptides and testing their stability under simulated gastrointestinal conditions. Optimal enzyme concentrations and hydrolysis times were found to significantly impact the biological activities, with fractions showing antioxidant, ACEI inhibitory, and hypoglycemic effects. The results suggested that peptide fractions maintained their activity after simulated gastrointestinal digestion.
Recently, the use of bioactive compounds in improving human health has received more attention. The aim of the present study was to hydrolyze orange seed proteins using pepsin enzyme to obtain bioactive peptides as well as to study the stability of such activity after simulated gastrointestinal digestion conditions. The method was optimized using different enzyme concentrations from 1% to 3%, hydrolysis times between 2 and 5 h, and an optimal temperature of 33 degrees C. Biological activities including alpha-glucosidase inhibition, alpha-amylase inhibition, Angiotensin I-Converting Enzyme (ACEI) inhibition, ferric reducing antioxidant power, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity were evaluated. According to the results, a significant higher value of the biological activity (p < 0.05) was observed using an enzyme ratio of 0.03 E/S and hydrolysis time of 3.5 h. After size-exclusion chromatography separation, fractions 45-49 and 50-54 showed the highest biological roles such as antioxidant, ACEI inhibitory, and hypoglycemic. Fractions with the highest biological activity were purified using RP-HPLC and analyzed using nano-liquid chromatography and mass spectrometry. The results obtained after simulated gastrointestinal digestion indicated that peptide fractions obtained after chromatographic separation significantly maintain their activity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available