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Article

Identification and Characterization of Novel Antioxidant Protein Hydrolysates from Kiwicha (Amaranthus caudatus L.)

1
Department of Medical Biochemistry, Molecular Biology and Immunology, School of Medicine, Universidad de Sevilla, Av. Sanchez Pizjuan s/n, 41009 Seville, Spain
2
Plant Protein Group, Department of Food and Health, Instituto de la Grasa, CSIC, Ctra. Utrera Km 1, 41013 Seville, Spain
3
Cell Biology Unit, Instituto de la Grasa, CSIC, Ctra. Utrera Km 1, 41013 Seville, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: María Pilar Almajano Pablos
Antioxidants 2021, 10(5), 645; https://doi.org/10.3390/antiox10050645
Received: 22 March 2021 / Revised: 14 April 2021 / Accepted: 20 April 2021 / Published: 22 April 2021
(This article belongs to the Special Issue Antioxidant Capacity of Vegetables and Foods)
Kiwicha (Amaranthus caudatus) is considered one of the few multipurpose pseudocereals for its potential use not only as a source of nutrients and fiber but also for its bioactive compounds. In recent years, antioxidant peptides are commonly used as functional ingredient of food. Herein, a kiwicha protein isolate (KPI), obtained from kiwicha defatted flour (KDF), was hydrolyzed by Bioprotease LA 660, a food-grade endoprotease, under specific conditions. The resulting kiwicha protein hydrolysates (KPHs) were chemically characterized and their digestibility and antioxidant capacity were evaluated by in vitro cell-free experiments owing to their measure of capacity to sequester DPPH free radical and reducing power. KPHs showed higher digestibility and antioxidant capacity than intact proteins into KPI. Therefore, the results shown in this study indicate that KPHs could serve as an adequate source of antioxidant peptides, representing an effective alternative to the generation of functional food. View Full-Text
Keywords: kiwicha; protein hydrolysate; bioactive compound; food ingredient; antioxidant activity kiwicha; protein hydrolysate; bioactive compound; food ingredient; antioxidant activity
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MDPI and ACS Style

Paz, S.M.-d.l.; Martinez-Lopez, A.; Villanueva-Lazo, A.; Pedroche, J.; Millan, F.; Millan-Linares, M.C. Identification and Characterization of Novel Antioxidant Protein Hydrolysates from Kiwicha (Amaranthus caudatus L.). Antioxidants 2021, 10, 645. https://doi.org/10.3390/antiox10050645

AMA Style

Paz SM-dl, Martinez-Lopez A, Villanueva-Lazo A, Pedroche J, Millan F, Millan-Linares MC. Identification and Characterization of Novel Antioxidant Protein Hydrolysates from Kiwicha (Amaranthus caudatus L.). Antioxidants. 2021; 10(5):645. https://doi.org/10.3390/antiox10050645

Chicago/Turabian Style

Paz, Sergio Montserrat-de la, Alicia Martinez-Lopez, Alvaro Villanueva-Lazo, Justo Pedroche, Francisco Millan, and Maria C. Millan-Linares. 2021. "Identification and Characterization of Novel Antioxidant Protein Hydrolysates from Kiwicha (Amaranthus caudatus L.)" Antioxidants 10, no. 5: 645. https://doi.org/10.3390/antiox10050645

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