{"id":8679,"date":"2024-08-14T19:01:24","date_gmt":"2024-08-14T19:01:24","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=8679"},"modified":"2024-08-14T19:01:24","modified_gmt":"2024-08-14T19:01:24","slug":"donkey-whey-protein","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/da\/valleprotein-fra-aesler\/","title":{"rendered":"Unders\u00f8gelse af fremstillingen af antioxidantpeptider fra \u00e6selvalleprotein ved computersimuleret enzymatisk hydrolyse"},"content":{"rendered":"<p>Unders\u00f8gelse af fremstillingen af antioxidantpeptider fra \u00e6selvalleprotein ved computersimuleret enzymatisk hydrolyse<br \/>\n\u00c6selm\u00e6lk, der er kendt som den \"bedste erstatning for menneskem\u00e6lk\", har et lavt fedtindhold, et h\u00f8jt indhold af um\u00e6ttede fedtsyrer, vitaminer og laktose og har st\u00e6rke sundhedsm\u00e6ssige fordele og evnen til at behandle immunrelaterede sygdomme i menneskekroppen. Som et valleproteinmejeriprodukt indeholder \u00e6selvalleprotein h\u00f8je niveauer af alfa-laktalbumin, beta-laktoglobulin og lysozym. Alfa-laktalbumin kan effektivt h\u00e6mme skadelige bakterier, hvilket er gavnligt for sp\u00e6db\u00f8rns og sm\u00e5b\u00f8rns v\u00e6kst og udvikling; \u03b2-laktoglobulin kan specifikt binde sig til n\u00e6ringsstoffer under ford\u00f8jelsen og spiller en rolle i beskyttelsen af n\u00e6ringsstoffer; Det h\u00f8je indhold af lysozym giver \u00e6selm\u00e6lk st\u00e6rke antibakterielle egenskaber. Derudover indeholder \u00e6selvalleprotein forskellige sporkomponenter som immunoglobulin, serumalbumin og epidermal v\u00e6kstfaktor, som har vigtige effekter p\u00e5 kroppens sygdomsresistensmekanisme. Derfor har udviklingen og udnyttelsen af \u00e6selm\u00e6lk en enorm social v\u00e6rdi og markedsudsigter. Men i \u00f8jeblikket findes der kun et enkelt produkt af \u00e6selm\u00e6lk i Kina, og udnyttelsesgraden af \u00e6selvalleprotein er st\u00e6rkt begr\u00e6nset, hvilket resulterer i manglende evne til at maksimere dets \u00f8konomiske fordele. Brugen af proteasehydrolyse til at fremstille bioaktive peptider fra \u00e6selvalleprotein er nyttig til yderligere forskning i den omfattende v\u00e6rdi af \u00e6selm\u00e6lksprodukter.<\/p>\n<p>Bioaktive peptider er sm\u00e5 peptidstoffer, som er gavnlige for levende organismers aktivitet og sundhed, og som kan optimere kroppens metaboliske milj\u00f8. De har forskellige bioaktive funktioner som f.eks. antibakterielle, antioxidante, immunregulerende og blodtrykss\u00e6nkende. Blandt dem kan antioxidantpeptider fjerne overskydende frie radikaler i kroppen ved at levere protoner, metalionchelater og h\u00e6mme lipidperoxidation. Samtidig er andelen af hydrofobe aminosyrer og aromatiske aminosyrer i peptidk\u00e6derne positivt korreleret med peptidernes antioxidantaktivitet. Jo h\u00f8jere andel, jo st\u00e6rkere er antioxidantaktiviteten, og jo mere gavnligt er det for kroppens oxidative forsvar. P\u00e5 nuv\u00e6rende tidspunkt er animalsk m\u00e6lkeprotein et varmt emne i forskningen af antioxidantpeptider i ind- og udland, men de fleste af dem er fremstillet af kom\u00e6lksprotein, og der er ikke mange unders\u00f8gelser af antioxidantpeptider fra \u00e6selm\u00e6lksprotein.<br \/>\nUnders\u00f8gelser i udlandet har bekr\u00e6ftet, at den samlede antioxidantkapacitet i \u00e6selm\u00e6lk er h\u00f8jere end i menneskem\u00e6lk, hvilket indikerer, at de peptider, der frigives fra \u00e6selm\u00e6lk efter enzymatisk hydrolyse, har en vis antioxidantkapacitet. \u00c6selm\u00e6lk er et r\u00e5materiale af h\u00f8j kvalitet til udvinding af antioxidantpeptider. Der er dog relativt lidt forskning i antioxidantpeptider udvundet af \u00e6selm\u00e6lk i Kina. At finde en gennemf\u00f8rlig procesteknologi til fremstilling af antioxidantpeptider af \u00e6selvalleprotein er af stor betydning for anvendelsen af antioxidantpeptider inden for medicin, f\u00f8devarer, sundhed og andre omr\u00e5der og kan ogs\u00e5 spille en rolle i udviklingen og de markeds\u00f8konomiske fordele ved \u00e6selm\u00e6lk. I dette eksperiment blev den mest egnede protease derfor screenet gennem computersimulering til enzymatisk hydrolyse af \u00e6selvalleprotein, hvilket gav et teoretisk grundlag for udviklingen af funktionelle produkter med antioxidantpeptider.<\/p>\n<p>Ved at bruge UniProt-databasen til at f\u00e5 aminosyresekvenserne af proteiner med h\u00f8jt indhold i r\u00e5materialeproteinet og bruge dem som bioinformatiske skabeloner blev den indbyggede software i BIOPEP-databasen brugt til at simulere enzymatisk hydrolyse af valleprotein fra \u00e6sler. Det \u03b1-chymotrypsin, der kan producere antioxidantaktive peptidsegmenter, blev screenet. Design Expert V8.0.6 responsoverfladeeksperimentet blev designet til at bestemme de optimale procesbetingelser for fremstilling af antioxidantpeptider fra \u00e6selvalleprotein: substratkoncentration af 4%, enzymatisk hydrolysetid p\u00e5 4 timer, temperatur p\u00e5 39 \u00b0C, pH p\u00e5 8 og enzymsubstratforhold af 4%. Den maksimale DPPH-radikalfjernelseshastighed for det enzymatisk hydrolyserede peptid, der blev opn\u00e5et under denne betingelse, er 46,23%.<\/p>","protected":false},"excerpt":{"rendered":"<p>Study on the preparation of antioxidant peptides from donkey whey protein by computer simulated enzymatic hydrolysis Donkey milk, known as the &#8220;best substitute for human milk&#8221;, has low fat content, high content of unsaturated fatty acids, vitamins, and lactose, and has strong health benefits and the ability to treat immune related diseases in the human [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Study on the preparation of antioxidant peptides from donkey whey protein by computer simulated enzymatic hydrolysis - 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