科普專欄–薯不揀單 - 深入淺出–以中性pH7的方式染髮

黑色的秀髮，最主要是由真黑素(Eumelanin)天然染成。661Please respect copyright.ＰＥＮＡＮＡGc2zg9OCXu
661Please respect copyright.ＰＥＮＡＮＡ8PDbpqCmL9
661Please respect copyright.ＰＥＮＡＮＡj9LEJafVS5
661Please respect copyright.ＰＥＮＡＮＡGFmwcAwGxP
（圖2）皮膚下的黑素細胞(Melanocyte)會製造出黑色粒子Melanosomes，而這些黑色粒子Melanosomes會走到表皮(Epidermis)或者髮囊(Hair follicile)，賦予皮膚及頭髮黑色外表。661Please respect copyright.ＰＥＮＡＮＡBZ5IMgr24Z
661Please respect copyright.ＰＥＮＡＮＡEGJrc2DMll
661Please respect copyright.ＰＥＮＡＮＡZqrAhQmo0m
661Please respect copyright.ＰＥＮＡＮＡ2gWISsm9za
（圖3）圖中為Melanosomes裡頭的生物化學反應，起始材料為氨基酸，經過一輪酶素的化學反應後，最終成品將為黑色真黑素及啡色真黑素。661Please respect copyright.ＰＥＮＡＮＡQRaqDELT1U
661Please respect copyright.ＰＥＮＡＮＡpyr7eVabrb
661Please respect copyright.ＰＥＮＡＮＡkCtvhc919P
而根據兩者比例的不同，最終的顏色效果亦會有所不同，所以Melanosomes並不一定是純黑色，亦因而解釋了為何並不是所有人的頭髮也是漆黑黑一片。661Please respect copyright.ＰＥＮＡＮＡkSy1tgIiJG
661Please respect copyright.ＰＥＮＡＮＡP8MSFECEJb
值得留意的是，這一系列發生在Melanosomes的反應均是在中性pH7的環境下進行，有別於現時常用的鹼性pH化學染髮方式。661Please respect copyright.ＰＥＮＡＮＡZLQWXayASS
661Please respect copyright.ＰＥＮＡＮＡco1jA62k01
有科學家看準這一點，因而嘗試照辦煮碗在體外套用我們自身Melanosomes蛋白酶的機制方式進行染髮（Ref1)。661Please respect copyright.ＰＥＮＡＮＡR0JRj34o1v
661Please respect copyright.ＰＥＮＡＮＡeyeTTQRllr
661Please respect copyright.ＰＥＮＡＮＡwgM6A5tEXx
（圖4）從圖中可見，鹼性pH化學染髮以及中性pH7模仿人類Melanosomes裡頭生物化學反應方式染髮（2小時，攝氏35度），兩者最終的外表差別不大。661Please respect copyright.ＰＥＮＡＮＡeGtR6qFeYe
661Please respect copyright.ＰＥＮＡＮＡghOjzrZHQh
661Please respect copyright.ＰＥＮＡＮＡcmWydNvFZT
而且經過5次清水沖洗及10分鐘的洗髮水猛烈沖洗後，兩者亦沒有出現脫色的現象。661Please respect copyright.ＰＥＮＡＮＡ2yqDpS7OKP
661Please respect copyright.ＰＥＮＡＮＡjARk6RbTda
只不過，利用鹼性pH化學染髮的話，色素會徹底進入髮質內部。661Please respect copyright.ＰＥＮＡＮＡLL3YL4JyAR
反觀中性pH7生物化學反應方式染髮，色素主要聚集在髮質外部，因此對頭髮的傷害相對較低。661Please respect copyright.ＰＥＮＡＮＡ0sRFsg8s71
661Please respect copyright.ＰＥＮＡＮＡTSwunR6sig
661Please respect copyright.ＰＥＮＡＮＡsUZn5TTVm6
（圖5）在圖中亦可以清楚看得到，鹼性pH化學染髮對頭髮外部會做成傷害(箭嘴所指位置)，661Please respect copyright.ＰＥＮＡＮＡAlDJ719SY0
661Please respect copyright.ＰＥＮＡＮＡqLF2tnV9ov
661Please respect copyright.ＰＥＮＡＮＡv5Z5vazY6J
而中性pH7模仿人類Melanosomes裡頭生物化學反應方式染髮則沒有這個問題。661Please respect copyright.ＰＥＮＡＮＡkCsOU3agl8
661Please respect copyright.ＰＥＮＡＮＡ5gwRTurilp
此方法能否在日後淘汰鹼性pH化學染髮或其他的染髮手段，我們將可拭目以待。661Please respect copyright.ＰＥＮＡＮＡ3L0nXQF4ID
661Please respect copyright.ＰＥＮＡＮＡKL0MAoDy0T
如果想我快啲出文的話，請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark，這對我非常之重要。661Please respect copyright.ＰＥＮＡＮＡkv3NuM3FLE
661Please respect copyright.ＰＥＮＡＮＡzG14lisIzK
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc661Please respect copyright.ＰＥＮＡＮＡTtfBWadZ7c
661Please respect copyright.ＰＥＮＡＮＡFwgtFrJBUL
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」，以課金的方式推動我繼續搜羅資料寫文，多謝。661Please respect copyright.ＰＥＮＡＮＡMC0yVFSUOf
661Please respect copyright.ＰＥＮＡＮＡNzm9p2ND7X
Link:661Please respect copyright.ＰＥＮＡＮＡwfGPcaAO3M
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio661Please respect copyright.ＰＥＮＡＮＡrtBXS1bdW0
661Please respect copyright.ＰＥＮＡＮＡJ8zQVYlTad
661Please respect copyright.ＰＥＮＡＮＡwbbu0ejf2E
有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。661Please respect copyright.ＰＥＮＡＮＡ6hs3XVFNSs
661Please respect copyright.ＰＥＮＡＮＡaxe0nO82Is
https://www.instagram.com/potatopigtongue/661Please respect copyright.ＰＥＮＡＮＡLzaLACrpPy
661Please respect copyright.ＰＥＮＡＮＡY2BeSYdFXg
661Please respect copyright.ＰＥＮＡＮＡSCdXieXwm5
Ref1:https://pubs.acs.org/doi/pdf/10.1021/acs.chemmater.0c02790

ns216.73.216.190da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章