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科技研發

原料簡介


黑龍江德康元生物科技有限公司--肽


      肽是涉及生物體內多種細胞功能的生物活性物質。生物體內已發現幾百種肽,是機體完成各種復雜的生理活性必不可少的參與者。所有細胞都能合成多肽物質,其功能活動也受多肽的調節。肽涉及人的激素、神經、細胞生長和生殖各領域,其重要性在于調節體內各個系統和細胞的生理功能,激活體內有關酶系,促進中間代謝膜的通透性,或通過控制DNA 轉錄影響特異的蛋白合成,最終產生特定的生理效應,或發揮其藥力作用。科學家把超過10 個氨基酸的“牽手”稱之為多肽,而通過生物技術提取的肽通稱“生物肽”。


      氨基酸鏈有“短鏈”、“長鏈”之分,短鏈一般由2-6 個氨基酸組成,長鏈一般由10 個以上數十個氨基酸組成。氨基酸短鏈肽分子量一般在1000 以下,具有極強的活性和多樣性,不需消化直接吸收,進入人體后不會被人體消化系統進行二次降解,以完整的形式被人體吸收,在人體也不需進行重新組合,在人體蛋白質代謝中直接合成細胞,發揮生理活性作用。


      肽既有氨基酸鏈的長短,也有分子量的大小。分子量在1000 以下的稱為“小肽”、“寡肽”、“微肽”,小肽是肽中“皇冠”,具有極強的活性和多樣性,有著重要的生物學功能。分子量在1000-3000 之間的肽稱為“多肽”,分子量在3000-5000 之間的肽稱為“大肽”,這些肽活性不如小肽,進入人體后,可能被人體消化系統進行二次降解,被二次降解后,有的可能被降解為小肽,有的可能被降解為氨基酸,人體二次降解后的產物到底是什么,很難說。


      生物活性肽一般是由蛋白質降解獲得。生物活性肽是蛋白質降解成氨基酸的中間產物,是氨基酸的前體物質,由幾個或數個氨基酸分子聚合連接而成的,具有原蛋白質和單體氨基酸不具備的獨特生理活性和醫療保健作用。它用于食品、保健食品、醫療,具有營養、保健、治療三重功能。
乐彩客

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