{"id":38610,"date":"2021-06-08T11:52:25","date_gmt":"2021-06-08T11:52:25","guid":{"rendered":"https:\/\/matis.is\/?p=38610"},"modified":"2021-06-08T11:52:27","modified_gmt":"2021-06-08T11:52:27","slug":"impact-of-ultrafiltration-and-nanofiltration-of-an-industrial-fish-protein-hydrolysate-on-its-bioactive-properties-p-n-a","status":"publish","type":"post","link":"https:\/\/matis.is\/en\/greinar\/impact-of-ultrafiltration-and-nanofiltration-of-an-industrial-fish-protein-hydrolysate-on-its-bioactive-properties-p-n-a\/","title":{"rendered":"Impact of ultrafiltration and nanofiltration of an industrial fish protein hydrolyzate on its bioactive properties (pn \/ a)"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>BACKGROUND:<\/strong>&nbsp;Numerous studies have demonstrated that&nbsp;<em>in vitro<\/em>&nbsp;controlled enzymatic hydrolysis of fish and shellfish proteins leads to bioactive peptides. Ultrafiltration (UF) and \/ or nanofiltration (NF) can be used to refine hydrolysates and also to fractionate them in order to obtain a peptide population enriched in selected sizes. This study was designed to highlight the impact of controlled UF and NF on the stability of biological activities of an industrial fish protein hydrolyzate (FPH) and to understand whether fractionation could improve its content in bioactive peptides.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>RESULTS:<\/strong>&nbsp;The starting fish protein hydrolyzate exhibited a balanced amino acid composition, a reproducible molecular weight (MW) profile, and a low sodium chloride content, allowing the study of its biological activity. Successive fractionation on UF and NF membranes allowed concentration of peptides of selected sizes, without, however, carrying out sharp separations, some MW classes being found in several fractions. Peptides containing Pro, Hyp, Asp and Glu were concentrated in the UF and NF retentates compared to the unfractionated hydrolyzate and UF permeate, respectively. Gastrin \/ cholecystokinin-like peptides were present in the starting FPH, UF and NF fractions, but fractionation did not increase their concentration. In contrast, quantification of calcitonin gene-related peptide (CGRP) -like peptides demonstrated an increase in CGRP-like activities in the UF permeate, relative to the starting FPH. The starting hydrolyzate also showed a potent antioxidant and radical scavenging activity, and a moderate angiotensin-converting enzyme (ACE) -1 inhibitory activity, which were not increased by UF and NF fractionation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CONCLUSION:<\/strong>\u00a0Fractionation of an FPH using membrane separation, with a molecular weight cut-off adapted to the peptide composition, may provide an effective means to concentrate CGRP-like peptides and peptides enriched in selected amino acids. The peptide size distribution observed after UF and NF fractionation demonstrates that it is misleading to characterize the fractions obtained by membrane filtration according to the MW cut-off of the membrane only, as is currently done in the literature. Copyright \u00a9 2010 Society of Chemical Industry<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1002\/jsfa.4020\">Link to article<\/a><\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>BACKGROUND:&nbsp;Numerous studies have demonstrated that&nbsp;in vitro&nbsp;controlled enzymatic hydrolysis of fish and shellfish proteins leads to bioactive peptides. Ultrafiltration (UF) and\/or [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"template-greinar.php","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[2011],"tags":[],"class_list":["post-38610","post","type-post","status-publish","format-standard","hentry","category-greinar"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Impact of ultrafiltration and nanofiltration of an industrial fish protein hydrolysate on its bioactive properties\u00a0(p n\/a) - Mat\u00eds<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/matis.is\/en\/greinar\/impact-of-ultrafiltration-and-nanofiltration-of-an-industrial-fish-protein-hydrolysate-on-its-bioactive-properties-p-n-a\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Impact of ultrafiltration and nanofiltration of an industrial fish protein hydrolysate on its bioactive properties\u00a0(p n\/a) - Mat\u00eds\" \/>\n<meta property=\"og:description\" content=\"BACKGROUND:&nbsp;Numerous studies have demonstrated that&nbsp;in vitro&nbsp;controlled enzymatic hydrolysis of fish and shellfish proteins leads to bioactive peptides. 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