Antioxidant,ACE-Inhibitory,and Antimicrobial Activities of Peptide Fractions Obtained From Dried Giant Squid Tunics |
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Authors: | Mauricio Mosquera Begoña Giménez Sonia Ramos Maria Elvira López-Caballero María del Carmen Gómez-Guillén |
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Institution: | Institute of Food Science, Technology and Nutrition (ICTAN, CSIC), Madrid, Spain |
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Abstract: | ABSTRACTSquid tunics were divided in two batches: freeze-dried and air-dried. Dried squid tunics were directly hydrolyzed with pepsin, Alcalase, and Esperase. Freeze-dried tunics showed better aptitude for hydrolysis than air-dried tunics. Pepsin showed the lowest efficiency in protein breakdown and gave hydrolysates with low antioxidant activity, whereas Alcalase and Esperase peptide fractions showed strong radical scavenging ability, ACE-inhibitory activity, and noticeable antimicrobial properties. B. cereus, B. coagulans, and D. hansenii were found to be the most sensitive bacteria. Dried squid tunics proved to be an alternative to a previously extracted gelatin for obtaining bioactive peptides. |
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Keywords: | Squid tunic hydrolysates ABTS ACE-inhibitory antimicrobial |
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