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。1935Please respect copyright.ＰＥＮＡＮＡhkGYPrLrbx
1935Please respect copyright.ＰＥＮＡＮＡDhTzvU0j2Y
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。1935Please respect copyright.ＰＥＮＡＮＡGLbCS0omuq
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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。1935Please respect copyright.ＰＥＮＡＮＡiUu3xYtxes
1935Please respect copyright.ＰＥＮＡＮＡCkx9qmmY6D
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（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1935Please respect copyright.ＰＥＮＡＮＡOJ2OSKnxLo
(Apocrine Sweat Glands)1935Please respect copyright.ＰＥＮＡＮＡXg42QCodMJ
1935Please respect copyright.ＰＥＮＡＮＡhSWUaAS5SB
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。1935Please respect copyright.ＰＥＮＡＮＡqBqhx0SdwR
1935Please respect copyright.ＰＥＮＡＮＡd3YgnaDoOT
外分泌汗腺的主要功能就是散發汗水幫助散熱，調節體溫。1935Please respect copyright.ＰＥＮＡＮＡZVVOMJ1aHA
1935Please respect copyright.ＰＥＮＡＮＡVOR35utML9
而大汗腺的主要功能，到目前為止仍未能搞得清楚。1935Please respect copyright.ＰＥＮＡＮＡ3lTjiAKQJn
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1935Please respect copyright.ＰＥＮＡＮＡWt1Vgo7bUE
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（圖2）下列三點為文中所找出的異味散發機制。1935Please respect copyright.ＰＥＮＡＮＡOUJZToVx6j
1935Please respect copyright.ＰＥＮＡＮＡBej4NV7dq0
1.大汗腺釋出無味物質Cys-Gly-3M3SH。1935Please respect copyright.ＰＥＮＡＮＡ0ptSsB5EGR
1935Please respect copyright.ＰＥＮＡＮＡM53EfwqwEo
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。1935Please respect copyright.ＰＥＮＡＮＡ13PaDMNhtB
1935Please respect copyright.ＰＥＮＡＮＡbKafLTv2TB
3. 葡萄球菌消化過後，吐出帶有異味的3M3SH。1935Please respect copyright.ＰＥＮＡＮＡ3ikMzky8Q5
1935Please respect copyright.ＰＥＮＡＮＡuX46iaAqwM
換句話說，腋下的異味就是由這些細菌引致而成的。1935Please respect copyright.ＰＥＮＡＮＡBKYG7BBQhk
1935Please respect copyright.ＰＥＮＡＮＡOvfiiCQaBq
1935Please respect copyright.ＰＥＮＡＮＡCgzfKbyEmi
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（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。1935Please respect copyright.ＰＥＮＡＮＡyiCFvRDUJm
1935Please respect copyright.ＰＥＮＡＮＡjuClMFnbZi
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。1935Please respect copyright.ＰＥＮＡＮＡBhSzZDBMeV
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。1935Please respect copyright.ＰＥＮＡＮＡ6mtLfr5u1w
1935Please respect copyright.ＰＥＮＡＮＡeD8ljKaTQ6
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；1935Please respect copyright.ＰＥＮＡＮＡlxGnNEOlGq
1935Please respect copyright.ＰＥＮＡＮＡZcKFZQjoXp
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。1935Please respect copyright.ＰＥＮＡＮＡ1d1IY5TG1h
1935Please respect copyright.ＰＥＮＡＮＡbQ3dwLEokw
而臭狐是否由這細菌引起或有份參與，文中並沒有提及。1935Please respect copyright.ＰＥＮＡＮＡzVRN7AFII1
1935Please respect copyright.ＰＥＮＡＮＡHfWQlCluuS
1935Please respect copyright.ＰＥＮＡＮＡwyntbE5Ott
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。1935Please respect copyright.ＰＥＮＡＮＡabsNBOGxOz
1935Please respect copyright.ＰＥＮＡＮＡIBpXoXnbPZ
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/toc1935Please respect copyright.ＰＥＮＡＮＡxCxoS9bsTY
1935Please respect copyright.ＰＥＮＡＮＡmm73oeEwei
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。1935Please respect copyright.ＰＥＮＡＮＡJDVA9cT36V
1935Please respect copyright.ＰＥＮＡＮＡs9dflplG8B
Link:1935Please respect copyright.ＰＥＮＡＮＡbew1hY1k89
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1935Please respect copyright.ＰＥＮＡＮＡ7Lk1iN63vw
1935Please respect copyright.ＰＥＮＡＮＡQUoAo1ar8k
1935Please respect copyright.ＰＥＮＡＮＡYnBp8bmGBP
有興趣接收科普資訊的話，歡迎follow IG: potatopigtongue。1935Please respect copyright.ＰＥＮＡＮＡQaanyzojKz
1935Please respect copyright.ＰＥＮＡＮＡnm4koMfYSp
Ref1:https://www.nature.com/articles/s41598-020-68860-z1935Please respect copyright.ＰＥＮＡＮＡFRwJYyNHW0
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