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。2050Please respect copyright.ＰＥＮＡＮＡ5rrUTSFZYl
2050Please respect copyright.ＰＥＮＡＮＡYqNu1mFaP6
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。2050Please respect copyright.ＰＥＮＡＮＡKk7SBe2aua
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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。2050Please respect copyright.ＰＥＮＡＮＡEcMrbXF42o
2050Please respect copyright.ＰＥＮＡＮＡTq7QRw45GQ
2050Please respect copyright.ＰＥＮＡＮＡB4ZLDpRp2k
（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2050Please respect copyright.ＰＥＮＡＮＡHStzroUSEH
(Apocrine Sweat Glands)2050Please respect copyright.ＰＥＮＡＮＡHuoyttEH2v
2050Please respect copyright.ＰＥＮＡＮＡy53PSv30q8
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。2050Please respect copyright.ＰＥＮＡＮＡ0HMgPsPr1D
2050Please respect copyright.ＰＥＮＡＮＡ1qRY6Ce3MV
外分泌汗腺的主要功能就是散發汗水幫助散熱，調節體溫。2050Please respect copyright.ＰＥＮＡＮＡoWKFDTljru
2050Please respect copyright.ＰＥＮＡＮＡYXeyNM0P4Q
而大汗腺的主要功能，到目前為止仍未能搞得清楚。2050Please respect copyright.ＰＥＮＡＮＡulamyZsaBj
2050Please respect copyright.ＰＥＮＡＮＡvPj7weAApP
2050Please respect copyright.ＰＥＮＡＮＡOl9zp4JAaA
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（圖2）下列三點為文中所找出的異味散發機制。2050Please respect copyright.ＰＥＮＡＮＡcLhjgTjGNM
2050Please respect copyright.ＰＥＮＡＮＡXCOx1qUyLK
1.大汗腺釋出無味物質Cys-Gly-3M3SH。2050Please respect copyright.ＰＥＮＡＮＡ9yWfZt8FLX
2050Please respect copyright.ＰＥＮＡＮＡ1u7Cn6OJl5
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。2050Please respect copyright.ＰＥＮＡＮＡMg7faCeK5i
2050Please respect copyright.ＰＥＮＡＮＡ1Q6Q0paRkP
3. 葡萄球菌消化過後，吐出帶有異味的3M3SH。2050Please respect copyright.ＰＥＮＡＮＡF5ZARTI3ic
2050Please respect copyright.ＰＥＮＡＮＡwYxVTPI0dH
換句話說，腋下的異味就是由這些細菌引致而成的。2050Please respect copyright.ＰＥＮＡＮＡp3LLpuc2oW
2050Please respect copyright.ＰＥＮＡＮＡ1gSv0AxRUa
2050Please respect copyright.ＰＥＮＡＮＡiWrXHPOFZH
2050Please respect copyright.ＰＥＮＡＮＡWAi6QYehxB
（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。2050Please respect copyright.ＰＥＮＡＮＡyHjx7ABgfO
2050Please respect copyright.ＰＥＮＡＮＡJM8L54sJ4H
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。2050Please respect copyright.ＰＥＮＡＮＡtZuCUVvTLY
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。2050Please respect copyright.ＰＥＮＡＮＡIdB5DlI0YL
2050Please respect copyright.ＰＥＮＡＮＡphsrp8mwpC
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；2050Please respect copyright.ＰＥＮＡＮＡ87kfJFRaw8
2050Please respect copyright.ＰＥＮＡＮＡIgkt3o9NZ3
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。2050Please respect copyright.ＰＥＮＡＮＡpze8eBy5Cm
2050Please respect copyright.ＰＥＮＡＮＡiHxhcrPjbc
而臭狐是否由這細菌引起或有份參與，文中並沒有提及。2050Please respect copyright.ＰＥＮＡＮＡFCkwlNBE0q
2050Please respect copyright.ＰＥＮＡＮＡe6BOft4vBn
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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。2050Please respect copyright.ＰＥＮＡＮＡcMVS8Lf8JZ
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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/toc2050Please respect copyright.ＰＥＮＡＮＡ18qtWYvRay
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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。2050Please respect copyright.ＰＥＮＡＮＡhG9KWlybRn
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Link:2050Please respect copyright.ＰＥＮＡＮＡDeHzx5kpaf
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio2050Please respect copyright.ＰＥＮＡＮＡxU1fSWwKIz
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有興趣接收科普資訊的話，歡迎follow IG: potatopigtongue。2050Please respect copyright.ＰＥＮＡＮＡafbVGPX1ZH
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Ref1:https://www.nature.com/articles/s41598-020-68860-z2050Please respect copyright.ＰＥＮＡＮＡJJqfzafdpb
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