Interaction mechanism of collagen peptides with four phenolic compounds in the ethanol-water solution / Xian Liu in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)  

[article]  inJOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 3 (Année 2021) . - 9 p. Titre : Interaction mechanism of collagen peptides with four phenolic compounds in the ethanol-water solution Type de document : texte imprimé Auteurs : Xian Liu, Auteur ; Xia Li, Auteur ; Zhangjun Huang, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2021 Article en page(s) : 9 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alcool Collagène Composés organiques volatils Dynamique moléculaire Eau Peptides Phénols Index. décimale : 547 Chimie organique : classer la biochimie à 574.192 Résumé : This study demonstrated the interaction mechanism of collagen peptides (CPs) with 4-ethylphenol (4-EP), phenol, guaiacol, and 4-ethylguaiacol (4-EG) in the ethanol-water solution. The ultraviolet visible spectroscopy, zeta potential tests and hydrogen nuclear magnetic spectroscopy manifested that CPs interacted with the phenolic compounds. Meanwhile, Isothermal titration calorimetry determination indicated that the CPs was hydrogen bonded with 4-EP in 52 %(v/v) ethanol-water solution, while the hydrophobic forces played a major role in the interaction of CPs with guaiacol and 4-EG, respectively. Moreover, hydrogen and hydrophobic bonds were involved in the interaction between CPs and phenol. Finally, Head Space-solid Phase Microextraction Gas Chromatography Mass Spectrometry analysis indicated that the content of phenolic compounds in model solution efficiently decreased with the presence of CPs. In the real liquor, it was found that the content of volatile compounds (including phenolic compounds) was obviously decreased after CPs added. Note de contenu : - MATERIALS AND METHODS : Material - UV-Vis measurements - Zeta potential determination - 1H NMR spectroscopy analysis - ITC detection - Solid-phase microextraction (SPME) - Gas chromatography-mass spectrometry (GC-MS) analysis - Statistics - RESULTS AND DISCUSSION : The Interaction between CPs and phenolic compounds in the ethanol-water solution - 1H NMR analysis - Thermodynamic parameters between CPs and phenolic compounds in the ethanol-water solution by ITC - The content of phenolic compounds in the ethanol-water solution - The content of volatile compounds in light-flavor types baijiu - Table 1 : Thermal parameters of collagen peptides reacted with phenolic compounds in 52 % ethanol-water solution - Table 2 : Effect of CPs on the content of phenolic compounds in the volatile components in 52 % ethanol-water solution as determined by HS-SPME-GC-MS - Table 3 : Effect of CPs on the content of volatile compounds in light-flavor types baijiu as determined by HS-SPME-GC-MS DOI : https://doi.org/10.1186/s42825-021-00065-0 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-021-00065-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37548 [article]

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