如果測量一個人的細胞數量,事實上只有25%是屬於人體細胞,其餘的75%均由細菌及真菌所據。2066Please respect copyright.PENANAkYGREJYr8l
2066Please respect copyright.PENANAIRvyWp0nEQ
細菌及真菌可以說是「無處不在」,它們不但寄宿於我們的皮膚外層,亦同時駐紮在我們身體內的腸道及各器官部位,與我們成呈共生關係。2066Please respect copyright.PENANAgAIBMMlcpb
2066Please respect copyright.PENANAJABOA4P1nd
最近有科學家發表學術文章(Ref1),講述位於汗腺附近的細菌就是腋下異味的其中一個元兇。2066Please respect copyright.PENANAZjOWFWRRV92066Please respect copyright.PENANAn6LEbmRjya
2066Please respect copyright.PENANAWbM6bX6Ey2
(圖1)我們身體的肝腺大致分為兩種,外分泌汗腺(Eccrine Sweat Glands)及大汗腺2066Please respect copyright.PENANAw5V8gD3W5u
(Apocrine Sweat Glands)2066Please respect copyright.PENANARpwg37rq0K
2066Please respect copyright.PENANAVkRQ2Afv4Q
前者接近遍佈全身,不與毛髮連接。後者主要位於腋下、乳頭及私處部位,與毛髮連接。2066Please respect copyright.PENANAFaekKMsgxG
2066Please respect copyright.PENANAa9FsXGHnSi
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。2066Please respect copyright.PENANApk1Ok0FZN4
2066Please respect copyright.PENANAIyC7pjHVjp
而大汗腺的主要功能,到目前為止仍未能搞得清楚。2066Please respect copyright.PENANANz29jVUwjF
2066Please respect copyright.PENANA4EHTxGHsdY2066Please respect copyright.PENANAp1ifUvZ3zP
2066Please respect copyright.PENANAdjFftrTsoK
(圖2)下列三點為文中所找出的異味散發機制。2066Please respect copyright.PENANAqMHIz80wFx
2066Please respect copyright.PENANAQvcsxZo2IA
1.大汗腺釋出無味物質Cys-Gly-3M3SH。2066Please respect copyright.PENANAj8DHgNQ8Td
2066Please respect copyright.PENANAuQSQY1KzNo
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。2066Please respect copyright.PENANAyugKaUgb6K
2066Please respect copyright.PENANAINHji18JKd
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。2066Please respect copyright.PENANAaCWdJHogao
2066Please respect copyright.PENANAp8YTBpTxXP
換句話說,腋下的異味就是由這些細菌引致而成的。2066Please respect copyright.PENANAS0aMvma2VF
2066Please respect copyright.PENANAJzI4lmWUkm2066Please respect copyright.PENANAIAJCmAmd8a
2066Please respect copyright.PENANAH2q3c9bqKv
(圖3)為作進一步的證實,科學家利用黃金葡萄球菌作對照實驗。2066Please respect copyright.PENANA3eKHFFHhzP
2066Please respect copyright.PENANAmR8oAaBgLa
他們發現人葡萄球菌的近親黃金葡萄球菌並沒能夠將無味的Cys-Gly-3M3SH消化成為帶有異味的3M3SH。2066Please respect copyright.PENANAYMb3sMULqN
但是,當把人葡萄球菌其中一隻酵素轉移到黃金葡萄球菌後,無味的Cys-Gly-3M3SH便能夠被消化成為帶有異味的3M3SH,證實異味是由那隻酵素所致。2066Please respect copyright.PENANAvzk4oJHULp
2066Please respect copyright.PENANAKqID7CQoxw
這隻酵素一直以來並沒有被前人發現,亦即是說,只要能夠研發出抑制那隻酵素的止汗劑的話,腋下的大部份異味亦能得以除去;2066Please respect copyright.PENANA3fk4b47V0S
2066Please respect copyright.PENANAZdqAHbpGbX
異味的產生,基本上是由硫醇(Thioalcohol)及脂肪酸(Fatty acid)而成。此文章所談及的機制純屬與硫醇的產生有關,沒有觸及脂肪酸那一方面。2066Please respect copyright.PENANAEN4QBULhH1
2066Please respect copyright.PENANAEjgcQ0l8zH
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。2066Please respect copyright.PENANAGR9rP7iQSQ
2066Please respect copyright.PENANACZgLyjfUdp
2066Please respect copyright.PENANARMTIn8tcOi
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。2066Please respect copyright.PENANARonFB8gUMy
2066Please respect copyright.PENANArfwgKjRhIc
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/toc2066Please respect copyright.PENANAd8xXA1w7tJ
2066Please respect copyright.PENANAzbNHKOpsUE
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。2066Please respect copyright.PENANAy0fxDxBSXo
2066Please respect copyright.PENANAy687s8qPi7
Link:2066Please respect copyright.PENANAQg1wHESPpc
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio2066Please respect copyright.PENANAzfj8KyImF7
2066Please respect copyright.PENANAavJJVQBgA8
2066Please respect copyright.PENANAfg0J61Mkp3
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。2066Please respect copyright.PENANAcXBbPusEnw
2066Please respect copyright.PENANAy93kV96vEA
Ref1:https://www.nature.com/articles/s41598-020-68860-z2066Please respect copyright.PENANAx3sPgTWgUg
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科普專欄–薯不揀單
作者:
薯仔聞茱莉

篇 #24
深入淺出–腋下異味的來源
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