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href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="779szri" class="twoCol"><div id="w7xeqxo" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產品供應</a>?<a href="http://www.cdcfah.com/cp/second-_huagong/">化工</a>?<a href="http://www.cdcfah.com/cp/third-huagong_qtfltz/">其他未分類</a>?上海乙基VC 醚價格抱誠守真上海北倉化工科技供應</p><div id="s4fsz78" class="leftbox clearfix"><h1>上海乙基VC 醚價格抱誠守真上海北倉化工科技供應</h1><div id="tzbtlxz" class="proBig"><div id="mg3cegn" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788868466796/2146974.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="nryq3zl" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788868466796/2146974.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="iceldph" class="content"><p><span>需求數量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>上海乙基VC 醚價格,維生素C乙基醚</p><p><span>***更新：</span>2020-12-26 06:15:29</p><p><span id="click" >瀏覽次數：0次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="8pbd8ac" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海北倉化工科技有限公司</a></p><p><span>聯系人：</span>王金良</p><p><span>郵箱: </span>shbeicang@vip.126.com</p><p><span>電話: </span>18516286991</p><p><span>傳真: </span>021_</p><p><span>網址: </span>http://www.shbeicang.cn</p><p><span>手機: </span>021-60459206</p><p><span>地址: </span>金山大道4168號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="mgyqszl" class="page-proshow02"><p class="title">詳細說明</p><div id="8t77nur" class="box"><p><p style="text-indent:25px">對維生素C分子進行醚化的過程中由于很多工藝條件的限制使得醚化不完全殘留了少量的維生素C分子。這些殘留的維生素C分子包含在維生素C乙基醚里面再暴露在空氣中很容易就會導致氧化變黃，這就極大地阻礙了產品在化妝品配方中的使用。維生素C乙基醚產品采用特殊新工藝進行生產，其產品純度比市面上的同類產品更高，達到99.8%以上。尤其含有極微量的殘留的維生素C分子，這使得該產品無論是在固體還是溶液狀態(tài)，甚至是長時間高溫暴露在空氣中的條件下均能保持穩(wěn)定，上海乙基VC 醚價格，上海乙基VC 醚價格，不被氧化變顏色。維生素C乙基醚可用于凝膠，上海乙基VC 醚價格、精華素、乳液、膏霜等美白淡斑、**老及其它護膚品。上海乙基VC 醚價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海乙基VC 醚價格,維生素C乙基醚" src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788868466796/2146974.png"></div><p style="text-indent:25px">維生素C乙基醚說的是具有美白淡斑組合物及美白淡斑護膚品，根據所描述的美白淡斑組合物分由VC乙基醚、熊果苷、白芷提取物、煙酰胺、甘草酸二鉀、野菊維素組成?？梢酝ㄟ^有效阻礙或阻止皮膚黑色素的生成、轉移，可以快速、有效地達到美白效果；能夠有效地解決美白活性成分易分解、易氧化、易變色等問題，降低了光線、熱對功效成分的影響，使其活性降低的問題；使用維生素C乙基醚所述的美白淡斑組合物及美白淡斑護膚品沒有其他作用，安全性好，能達到長久美白淡斑作用。上海乙基VC 醚價格3-o-乙基抗壞血酸（維生素C乙基醚）：確保VC的利用度。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海乙基VC 醚價格,維生素C乙基醚" src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788700253906/6677097.png"></div><p style="text-indent:25px">在人體內，維生素C是高效抗氧化劑，用來減輕抗壞血酸過氧化物酶（ascorbate peroxidase）sch的氧化應激（oxidative stress）。還有許多重要的生物合成過程中也需要維生素C參與作用。由于大多數哺乳動物都能靠肝臟來合成維生素C，所以并不存在缺乏的問題；但是人類、靈長類、土撥鼠等少數動物卻不能自身合成，必須通過食物、yao物等攝取。維生素C可以是氧化型，又可以是還原型存在于體內，所以可作為供氫體，又可作為受氫體，在體內氧化還原過程中發(fā)揮重要作用。?而維生素C乙基醚有助于食物蛋白質中的胱氨酸還原為半胱氨酸，進而合成抗體。</p><p style="text-indent:25px">從已知黑色素生成阻礙劑的作用機制來看可以分為兩類：1、對黑色素細胞的細胞毒性，阻礙黑色素的生成；2.阻礙黑色素細胞內黑色素的生成。目前我國市場上還沒有一種公認的安全有效的美白淡斑功能添加劑。大部分的美白淡斑護膚品的美白效果短暫，不明顯且見效慢，而有些淡斑產品為了增強和加快美白淡斑或淡斑效果，加入大劑量的氫醌或氨基**等有害物質，致使部分消費者出現嚴重過敏或不可逆汞斑（汞中毒）等毀容事件。因此對安全、有效的美白淡斑產品的研究一直是美容化妝行業(yè)重點關注的課題。維生素C乙基醚克服上述不足，提供一種含有VC乙基醚的美白淡斑組合物，以及含有該美白淡斑組合物的護膚品，能有效解決了現有美白產品美白效果短暫，不明顯且見效慢的問題，同時使用沒有其他作用，安全性好，能達到長久美白淡斑作用。維生素C乙基醚穩(wěn)定性好，耐光、耐熱、耐酸、耐堿、耐鹽和空氣氧化。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海乙基VC 醚價格,維生素C乙基醚" src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788751220703/812923.png"></div><p style="text-indent:25px">VC主要負責對抗水性自由基，是個不穩(wěn)定的淘氣寶寶，很不穩(wěn)定。護膚品中，一般都是它的衍生物維生素C乙基醚等。研究證明，護膚品中所添加的VC只有達到0.5%~2.0%的濃度才能真正起到美白功效，該濃度的維生素C乙基醚則能幫助緊致肌膚。所謂的緊致是它可以參與進膠原蛋白合成的過程中，增加肌膚中膠原蛋白的數量并促進膠原蛋白的連接。有實驗顯示，持續(xù)使用6個月維生素C乙基醚護膚，肌膚紋理的排列方向發(fā)生了變化：從方向較為一致變?yōu)榉较螂s亂的網狀結構，正是老化肌和年輕肌的特點。VC乙基醚通過透過角質層直達基底層黑色素細胞，阻抑酪氨酸酶活性。嘉興專業(yè)生產乙基VC 醚</p><p style="text-indent:25px">想要擁有白皙光滑的肌膚，需要每天使用含有維生素C乙基醚護膚品。上海乙基VC 醚價格</p><p style="text-indent:25px">相對于維生素C，維生素C乙基醚（3-O-乙基抗壞血酸）是一種親油親水的兩性維生素C衍生物，這不僅使其在配方中能夠極為方便的使用，更加使其容易穿透角質層進入真皮層，進入真皮層后被生物酶分解發(fā)揮VC的作用，提高VC的利用度，從而起到更好的美白淡斑的功效。除此以外，普通維生素C則很難被皮膚吸收，生物利用度很低，而維生素C乙基醚相對普通維生素C顯示出極高的穩(wěn)定性。目前國內生產的維生素C乙基醚產品在水溶液或是固體狀態(tài)保存的條件下均會有顏色逐漸變黃的現象，這極大的制約了該產品的保存和使用。主要是因為在目前的維生素C乙基醚的生產過程中，經歷了從維生素C上保護基脫保護劑的過程。上海乙基VC 醚價格</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2569013.html</p></div></div></div></div></div><div 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