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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="8lmzmf8" class="twoCol"><div id="zlmjp8f" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</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>?衢州乙基VC 醚現(xiàn)價(jià) 客戶至上上海北倉(cāng)化工科技供應(yīng)</p><div id="8g8xxli" class="leftbox clearfix"><h1>衢州乙基VC 醚現(xiàn)價(jià) 客戶至上上海北倉(cāng)化工科技供應(yīng)</h1><div id="0zpcr38" class="proBig"><div id="n38n8aa" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788773027343/6779282.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="5f3yj9n" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788773027343/6779282.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="5i4ufdz" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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(chǎn)品關(guān)鍵詞：</span>衢州乙基VC 醚現(xiàn)價(jià),維生素C乙基醚</p><p><span>***更新：</span>2021-01-06 04:15:02</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="emnhx9y" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海北倉(cāng)化工科技有限公司</a></p><p><span>聯(lián)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(wǎng)址: </span>http://www.shbeicang.cn</p><p><span>手機(jī): </span>021-60459206</p><p><span>地址: </span>金山大道4168號(hào)</p><p>[當(dāng)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="58zhw9n" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="xkl7nhc" class="box"><p><p style="text-indent:25px">維生素C乙基醚促進(jìn)膠原蛋白的合成。在膠原蛋白合成的程中，維生素C乙基醚的還原性可以刺激合成膠原蛋白過(guò)程中需要的酶。膠原蛋白可以增加皮膚的韌性，使皮膚更容易適應(yīng)環(huán)境，不容易因?yàn)楸砬橹惖囊蛩禺a(chǎn)生皺紋。所謂”剛強(qiáng)易折“，皮膚失去韌性發(fā)脆，就呈現(xiàn)剛性，容易受傷，而膠原蛋白可以避免這種情況。而且從視覺上，膠原蛋白可以令皮膚看上去飽滿。膠原蛋白可以提高皮膚含水量，使皮膚視覺上更白更通透。由于膠原蛋白主要依賴于體內(nèi)合成（至于比較偏門不被主流接受的“外敷膠原蛋白可以痕量吸收“這種理論，衢州乙基VC 醚現(xiàn)價(jià)，衢州乙基VC 醚現(xiàn)價(jià)，這里就不討論了），就需要皮膚中維生素C乙基醚含量足夠，衢州乙基VC 醚現(xiàn)價(jià)，來(lái)保證皮膚中膠原蛋白的合成過(guò)程。維生素C乙基醚是一種非常有用的維生素C衍生物。衢州乙基VC 醚現(xiàn)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="衢州乙基VC 醚現(xiàn)價(jià),維生素C乙基醚" src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788773027343/6779282.png"></div><p style="text-indent:25px">維生素C("VC")學(xué)名叫L- Ascorbic Acid，L-抗壞血酸，也叫左式右旋C（就是很多品牌宣傳的 “左旋VC”）。說(shuō)起來(lái)抗壞血酸這個(gè)名字背后也有一個(gè)悲傷的故事，大航海時(shí)代很多海員會(huì)患上當(dāng)時(shí)的不治之癥壞血病，導(dǎo)致牙齦腫脹，牙齒脫落，皮下出血，傷口不能愈合，之后***衰竭去世，直到后來(lái)被發(fā)現(xiàn)這種疾病來(lái)自缺乏新鮮的蔬菜和水果，這種病才得到了控制，隨之有了維生素理論的產(chǎn)生和對(duì)VC的成功分離。VC本身是水溶性的抗氧化物，有阻斷黑色素生成以及還原已生成黑色素，中和自由基，促進(jìn)膠原蛋白生成，阻礙等功能。它是少數(shù)幾個(gè)被可靠科學(xué)研究證明對(duì)均衡提亮膚色，減少皺紋有效的護(hù)膚成分之一。雖然VC聽起來(lái)有神奇功效，但也是一個(gè)比較棘手的成分：由于它的強(qiáng)還原性，它非常容易氧化，氧化后不僅失活還對(duì)肌膚有不好的作用；化學(xué)性質(zhì)不穩(wěn)定，高溫，陽(yáng)光和金屬離子等等都能讓它失去活性；由于需要比較低的pH環(huán)境才能穩(wěn)定，對(duì)皮膚的刺激性也比較大。而隨著維生素C乙基醚的出現(xiàn)有效地解決了這些問(wèn)題。合肥乙基VC 醚廠家直銷價(jià)格維生素C乙基醚在PH值3.0-6.0的環(huán)境中更穩(wěn)定。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="衢州乙基VC 醚現(xiàn)價(jià),維生素C乙基醚" src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788614531250/839106.png"></div><p style="text-indent:25px">維生素C乙基醚作用：當(dāng)添加量為2%時(shí)，維生素C乙基醚有漂白和美白的雙重效果。維生素C乙基醚對(duì)膠原質(zhì)的構(gòu)成和合成具有修復(fù)作用。維生素C乙基醚在PH值3.0-6.0的環(huán)境中更穩(wěn)定。添加適量濃度的煙酰胺，通過(guò)反復(fù)調(diào)試選擇適宜的肌膚耐受比例，提升配方的溫和性；蘊(yùn)含透明質(zhì)酸鈉、維C乙基醚、燕麥仁提取物等多種精華成分，具有補(bǔ)水、亮膚、修護(hù)等功效，從多角度給予肌膚充足的養(yǎng)護(hù)。3-o-乙基抗壞血酸（維生素C乙基醚）：確保VC的利用度，相對(duì)VC而言，穩(wěn)定性好，耐光、耐熱、耐堿、耐鹽和空氣氧化等。具有親油和親水結(jié)構(gòu)，易于吸收，幫助膠原蛋白的合成，從而使皮膚變得充盈飽滿、細(xì)膩光滑。還有煥亮膚色和抗肌膚氧化的作用。</p><p style="text-indent:25px">相對(duì)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(zhì)層進(jìn)入真皮層，進(jìn)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(duì)普通維生素C顯示出極高的穩(wěn)定性。目前國(guó)內(nèi)生產(chǎn)的維生素C乙基醚產(chǎn)品在水溶液或是固體狀態(tài)保存的條件下均會(huì)有顏色逐漸變黃的現(xiàn)象，這極大的制約了該產(chǎn)品的保存和使用。主要是因?yàn)樵谀壳暗木S生素C乙基醚的生產(chǎn)過(guò)程中，經(jīng)歷了從維生素C上保護(hù)基脫保護(hù)劑的過(guò)程。維生素C乙基醚進(jìn)入機(jī)體后非常容易體內(nèi)的生物酶分解從而發(fā)揮維生素C的生物學(xué)功效。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="衢州乙基VC 醚現(xiàn)價(jià),維生素C乙基醚" src="https://tyunfile.71360.com/UploadFile/shbeicanghuagong/637326788700253906/6677097.png"></div><p style="text-indent:25px">含有維生素C乙基醚的產(chǎn)品要避光避高溫保存：雖然發(fā)揮的作用更強(qiáng)，但這些產(chǎn)品在保存時(shí)一定要特別注意，一定要放在避光、干燥且陰涼的地方，這是因?yàn)楫a(chǎn)品中的維生素C乙基醚活性高，因此也很容易受到環(huán)境的影響而失效，如果保存不當(dāng)，沒(méi)過(guò)多久你會(huì)發(fā)現(xiàn)產(chǎn)品本身白色或淡黃色的質(zhì)地變成了橙色或棕色，這也就表示此時(shí)產(chǎn)品中的維生素C乙基醚對(duì)于改善肌膚已經(jīng)沒(méi)什么用了。含有高濃度維生素C乙基醚的產(chǎn)品要配合防曬一起使用：很多含有維生素C乙基醚的產(chǎn)品都建議放在晚上使用，這是為了防止維生素C乙基醚受到陽(yáng)光的影響變質(zhì)，如果白天需要使用的話，那在涂抹之后一定不能忘了防曬，否則作為強(qiáng)抗氧化成分的維生素C乙基醚就會(huì)被日光氧化，失去效果。維生素C乙基醚可以和黑色素反應(yīng)，將其還原成“多巴”。合肥乙基VC 醚廠家直銷價(jià)格</p><p style="text-indent:25px">維生素C乙基醚耐光、耐熱、耐酸、耐堿和耐鹽。衢州乙基VC 醚現(xiàn)價(jià)</p><p style="text-indent:25px">目前國(guó)內(nèi)生產(chǎn)的VC乙基醚產(chǎn)品在水溶液或是固體狀態(tài)保存的條件下均會(huì)有顏色逐漸變黃的現(xiàn)象，這極大的制約了該產(chǎn)品的保存和使用。主要是因?yàn)樵谀壳暗腣C乙基醚的生產(chǎn)過(guò)程中，經(jīng)歷了從維生素C上保護(hù)基脫保護(hù)劑的過(guò)程。而在對(duì)維生素C分子進(jìn)行醚化的過(guò)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。VC乙基醚屬皮膚色素還原劑，其主要作用是阻礙黑色素，大量臨床研究表明,Vc乙基醚能夠明顯提高皮膚亮度，阻礙炎癥引起的皮膚發(fā)紅癥狀，明顯去黃和均勻膚色。并且，動(dòng)物實(shí)驗(yàn)發(fā)現(xiàn)，涂抹后24小時(shí)后，有多達(dá)1%的部分可以到達(dá)皮革，這對(duì)于改善皺紋，色斑，抗早衰十分重要。在百度百科上就可以查到它的相關(guān)介紹。衢州乙基VC 醚現(xiàn)價(jià)</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2722689.html</p></div></div></div></div></div><div id="1c4scpe" class="page-right twoColRt"><div id="q7idtap" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="b2dyybw" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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