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。2073Please respect copyright.ＰＥＮＡＮＡy4AwXs1sM1
2073Please respect copyright.ＰＥＮＡＮＡiB51Pghqjb
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。2073Please respect copyright.ＰＥＮＡＮＡmfueIUXMiy
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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。2073Please respect copyright.ＰＥＮＡＮＡpeCQzJnfCm
2073Please respect copyright.ＰＥＮＡＮＡyMdpmd6l4U
2073Please respect copyright.ＰＥＮＡＮＡlEGW5Obmk8
（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2073Please respect copyright.ＰＥＮＡＮＡ3zwjvAeLwe
(Apocrine Sweat Glands)2073Please respect copyright.ＰＥＮＡＮＡzEiu68OFS3
2073Please respect copyright.ＰＥＮＡＮＡOLHv1pjkHk
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。2073Please respect copyright.ＰＥＮＡＮＡYnFNxtNPou
2073Please respect copyright.ＰＥＮＡＮＡrWVLd2OkBx
外分泌汗腺的主要功能就是散發汗水幫助散熱，調節體溫。2073Please respect copyright.ＰＥＮＡＮＡWb8kEDOFEP
2073Please respect copyright.ＰＥＮＡＮＡKkr9palwjO
而大汗腺的主要功能，到目前為止仍未能搞得清楚。2073Please respect copyright.ＰＥＮＡＮＡIGrHhX6o3C
2073Please respect copyright.ＰＥＮＡＮＡVPjPSNLxSw
2073Please respect copyright.ＰＥＮＡＮＡMutI6eMJig
2073Please respect copyright.ＰＥＮＡＮＡVWRPnpqubW
（圖2）下列三點為文中所找出的異味散發機制。2073Please respect copyright.ＰＥＮＡＮＡ0WbBMPVzZD
2073Please respect copyright.ＰＥＮＡＮＡUSiKc3b5TP
1.大汗腺釋出無味物質Cys-Gly-3M3SH。2073Please respect copyright.ＰＥＮＡＮＡT59rF8SLYi
2073Please respect copyright.ＰＥＮＡＮＡi3FGMn31uj
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。2073Please respect copyright.ＰＥＮＡＮＡmwTs6wvNUy
2073Please respect copyright.ＰＥＮＡＮＡICPMfHZqld
3. 葡萄球菌消化過後，吐出帶有異味的3M3SH。2073Please respect copyright.ＰＥＮＡＮＡGFmCJIvlYE
2073Please respect copyright.ＰＥＮＡＮＡrX8PfoBZ76
換句話說，腋下的異味就是由這些細菌引致而成的。2073Please respect copyright.ＰＥＮＡＮＡNbfFILGdZs
2073Please respect copyright.ＰＥＮＡＮＡ3FRUurXcX2
2073Please respect copyright.ＰＥＮＡＮＡJDSVZ1LtzK
2073Please respect copyright.ＰＥＮＡＮＡy43Sow1oLu
（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。2073Please respect copyright.ＰＥＮＡＮＡvltBmODltX
2073Please respect copyright.ＰＥＮＡＮＡssojCFlpZt
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。2073Please respect copyright.ＰＥＮＡＮＡO3eja5krrM
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。2073Please respect copyright.ＰＥＮＡＮＡyqBm2ZkpWU
2073Please respect copyright.ＰＥＮＡＮＡSjcWfyF9Df
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；2073Please respect copyright.ＰＥＮＡＮＡrrXW6R5JtZ
2073Please respect copyright.ＰＥＮＡＮＡ8zoiy07DJk
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。2073Please respect copyright.ＰＥＮＡＮＡbZU2BCYjgC
2073Please respect copyright.ＰＥＮＡＮＡ2nLxAXYz1I
而臭狐是否由這細菌引起或有份參與，文中並沒有提及。2073Please respect copyright.ＰＥＮＡＮＡyuGMoux4fO
2073Please respect copyright.ＰＥＮＡＮＡ586ef3v5Av
2073Please respect copyright.ＰＥＮＡＮＡIGdIv8rHGv
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。2073Please respect copyright.ＰＥＮＡＮＡ8s36sfPCsh
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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/toc2073Please respect copyright.ＰＥＮＡＮＡP6DLZJcmve
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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。2073Please respect copyright.ＰＥＮＡＮＡMBfyO1COSw
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Link:2073Please respect copyright.ＰＥＮＡＮＡVZ0eU6zIfN
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio2073Please respect copyright.ＰＥＮＡＮＡnRUrr9ShF3
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2073Please respect copyright.ＰＥＮＡＮＡisuhibE8lF
有興趣接收科普資訊的話，歡迎follow IG: potatopigtongue。2073Please respect copyright.ＰＥＮＡＮＡvlNWQBLirV
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Ref1:https://www.nature.com/articles/s41598-020-68860-z2073Please respect copyright.ＰＥＮＡＮＡyeouFZCels
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