一碗同等糖份的紅豆沙,如果將熱紅豆沙和凍紅豆沙比較的話,熱紅豆沙感覺起上來總是會比較甜,究竟為何會這樣呢?1267Please respect copyright.PENANAY4BiseIlNx
1267Please respect copyright.PENANAT83T78RQOK
1267Please respect copyright.PENANAtOxn1KVkjx
答案就在於舌頭上的味蕾感測機制之上。1267Please respect copyright.PENANAZ27tWZwYhk
1267Please respect copyright.PENANArS9OjMjYq4
(圖2)我們的舌頭上佈滿味蕾細胞,主要功能是為我們感測食物的味道。1267Please respect copyright.PENANA9yIQEdakts
以感測甜味為例,以下為扼要的簡化過程。1267Please respect copyright.PENANALqW4qWrjsI
1267Please respect copyright.PENANAhlSWPE4B2h
1267Please respect copyright.PENANAa2pppkV6Ga
1.甜味物質與味蕾上的T1R2及T1R3合併。1267Please respect copyright.PENANAj4EwBQZSfl
(Type1 Taste Receptor member 2 and 3)1267Please respect copyright.PENANA7ugqrNBChC
1267Please respect copyright.PENANADf956SvDAL
2.其後觸發一系列的細胞反應,並產生出鈣離子(Ca2+ ion)。1267Please respect copyright.PENANAKv63KNv0hU
1267Please respect copyright.PENANABeRWkUjb4Z
3. 鈣離子觸動TRPM5,產生電流。1267Please respect copyright.PENANA4UfGssfOHq
1267Please respect copyright.PENANA3alS7KLaHQ
4. 電流經由神經細胞傳到大腦。1267Please respect copyright.PENANA7JPOMNKRcN
1267Please respect copyright.PENANAc2N4ZSmgZH
5. 大腦分析電流訊息,製造甜味的感覺。1267Please respect copyright.PENANA3MeQ4wfwEB
1267Please respect copyright.PENANAjd2Q6LkbaO
(圖3)那麼,為何熱紅豆沙會比較甜呢?玄機就在圖中機制的第三步。1267Please respect copyright.PENANAa3dEXmUduu
1267Please respect copyright.PENANAr4tIRMuKZk
1267Please respect copyright.PENANA6aKcySSyIA
TRPM5除了能夠感測鈣離子後,亦能感測溫度。1267Please respect copyright.PENANAIoW2tQrguC
若然食物溫度提升的話,TRPM5所發出的電流強度便會有所增長。1267Please respect copyright.PENANA230ek96pCU
而電流越強的話,大腦便會轉遞出越甜的感覺。1267Please respect copyright.PENANAoeFDySpGDh
1267Please respect copyright.PENANA0zYCaqrUTY
而正正就是因為這個緣故,儘管糖份一樣,熱紅豆沙食起上來會比凍紅豆沙感覺起上來會比較甜。1267Please respect copyright.PENANAwy4ap3Poxj
1267Please respect copyright.PENANAFJZGWVDAr0
1267Please respect copyright.PENANA6MbL0s9RaX
1267Please respect copyright.PENANAvdQtIBICpJ
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。1267Please respect copyright.PENANAkzpEkxaaBA
1267Please respect copyright.PENANAA0CuJAgqfI
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/toc1267Please respect copyright.PENANAcERUx70HeM
1267Please respect copyright.PENANAtMWBQYdiTM
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。1267Please respect copyright.PENANAmyJbUHyVFg
1267Please respect copyright.PENANAsXlSedlBw2
Link:1267Please respect copyright.PENANANFCvQkEo3K
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1267Please respect copyright.PENANAhEhYJyy9QE
1267Please respect copyright.PENANAAogvZBwgAx
1267Please respect copyright.PENANAym0NQHGzJx
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。1267Please respect copyright.PENANAPtBdI439gY
arrow_back
科普專欄–薯不揀單
more_vert
-
info_outline 資料
-
toc 目錄
-
share 分享
-
format_color_text 介面設置
-
exposure_plus_1 推薦
-
打賞
-
report_problem 檢舉
-
account_circle 登入
X
科普專欄–薯不揀單
作者:
薯仔聞茱莉
篇 #34
深入淺出–為何熱紅豆沙食起上來會比凍紅豆沙感覺更甜
喜歡 1
閱讀 1263
書籤 148
campaign
催更 0
打賞
以 Facebook 帳號登入
或 註册/登入 以留言或加上書籤
按此加載下一章
X
每次催更後,作者都會收到通知!
smartphone100 → 催更
×
寫下你喜歡這個故事的地方
×
對此喜歡的人