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Título: | Protein digestion of different protein sources using the INFOGEST static digestion model |
Autor: | Sousa, Raquel; Portmann, Reto; Dubois, Sébastien; Recio, Isidra CSIC ORCID ; Egger, Lotti | Palabras clave: | Amino acid Protein hydrolysis Liquid chromatography-mass spectrometry peptides In vitro digestion Proteins |
Fecha de publicación: | 2020 | Editor: | Elsevier | Citación: | Food Research International 130: 108996 (2020) | Resumen: | In vitro digestion systems are valuable tools for understanding and monitoring the complex behavior of food degradation during digestion, thus proving to be good candidates for replacing in vivo assays. The aim of the present work was to study protein hydrolysis in a selection of different protein sources using the harmonized INFOGEST static protocol: three isolated proteins (collagen, zein, and whey protein) and five foods (sorghum flour, wheat bran cereals, peanuts, black beans, and pigeon peas). The proteins of all the substrates were analyzed by SDS-PAGE and HPLC-MS/MS. Individual amino acid composition was analyzed by high-performance liquid chromatography (HPLC). EAA/NEAA (essential amino acids/ nonessential amino acids) ratios in the substrates from low to high were as follows: wheat bran cereals, peanuts, collagen, zein, whey protein, sorghum, pigeon peas, and black beans. The results revealed sorghum, whey protein, and zein as good sources of BCAA. In all substrates, no intact protein from the substrates was visually detected by SDS-PAGE after the intestinal phase of in vitro digestion with the INFOGEST protocol. However, digestion-resistant peptides were detected in all substrates after the intestinal digestion phase. Protein hydrolysis was high in whey protein isolate and pigeon pea and low for wheat bran cereals and bovine collagen. | Versión del editor: | https://doi.org/10.1016/j.foodres.2020.108996 | URI: | http://hdl.handle.net/10261/220199 | DOI: | 10.1016/j.foodres.2020.108996 | ISSN: | 0963-9969 |
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