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？1542Please respect copyright.ＰＥＮＡＮＡ5hdlT9pYIG
1542Please respect copyright.ＰＥＮＡＮＡBICyZkk0oM
1542Please respect copyright.ＰＥＮＡＮＡ91sTnHJsAi
答案就在於舌頭上的味蕾感測機制之上。1542Please respect copyright.ＰＥＮＡＮＡA33oNb0dfq
1542Please respect copyright.ＰＥＮＡＮＡIWP4kPKg1q
（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。1542Please respect copyright.ＰＥＮＡＮＡSl0iv3Le6p
以感測甜味為例，以下為扼要的簡化過程。1542Please respect copyright.ＰＥＮＡＮＡbmZVIFdT14
1542Please respect copyright.ＰＥＮＡＮＡ7skkcrUa7c
1542Please respect copyright.ＰＥＮＡＮＡTAJdMMBS3S
1.甜味物質與味蕾上的T1R2及T1R3合併。1542Please respect copyright.ＰＥＮＡＮＡe4MMDl8CbE
(Type1 Taste Receptor member 2 and 3)1542Please respect copyright.ＰＥＮＡＮＡK71qRds5WQ
1542Please respect copyright.ＰＥＮＡＮＡ1udOJ0GehC
2.其後觸發一系列的細胞反應，並產生出鈣離子(Ca2+ ion)。1542Please respect copyright.ＰＥＮＡＮＡ4MdII45VZr
1542Please respect copyright.ＰＥＮＡＮＡO3jE7THqqu
3. 鈣離子觸動TRPM5，產生電流。1542Please respect copyright.ＰＥＮＡＮＡchvtJainRz
1542Please respect copyright.ＰＥＮＡＮＡeUNWFQwcg3
4. 電流經由神經細胞傳到大腦。1542Please respect copyright.ＰＥＮＡＮＡXfEmuO3HCe
1542Please respect copyright.ＰＥＮＡＮＡYLDTzKS2Su
5. 大腦分析電流訊息，製造甜味的感覺。1542Please respect copyright.ＰＥＮＡＮＡOH3SQ8Oq29
1542Please respect copyright.ＰＥＮＡＮＡ0LqRR8Y8yY
（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。1542Please respect copyright.ＰＥＮＡＮＡvxF69zNqiC
1542Please respect copyright.ＰＥＮＡＮＡ17LqtDshVG
1542Please respect copyright.ＰＥＮＡＮＡimdMZOKByS
TRPM5除了能夠感測鈣離子後，亦能感測溫度。1542Please respect copyright.ＰＥＮＡＮＡyN22uCar9Q
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。1542Please respect copyright.ＰＥＮＡＮＡ4fioBz3VKY
而電流越強的話，大腦便會轉遞出越甜的感覺。1542Please respect copyright.ＰＥＮＡＮＡNmEudoi26D
1542Please respect copyright.ＰＥＮＡＮＡn75n72PUiq
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。1542Please respect copyright.ＰＥＮＡＮＡUPaLIkk8aa
1542Please respect copyright.ＰＥＮＡＮＡXbWeQXZXV7
1542Please respect copyright.ＰＥＮＡＮＡGxWqj2YtIm
1542Please respect copyright.ＰＥＮＡＮＡMOZdg0JPlO
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。1542Please respect copyright.ＰＥＮＡＮＡAM1XZrR8yk
1542Please respect copyright.ＰＥＮＡＮＡGLmJogMdxO
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/toc1542Please respect copyright.ＰＥＮＡＮＡmT2dhLupx1
1542Please respect copyright.ＰＥＮＡＮＡScas0cyPRA
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。1542Please respect copyright.ＰＥＮＡＮＡ7fF7ooenH6
1542Please respect copyright.ＰＥＮＡＮＡCS8yuw17gW
Link:1542Please respect copyright.ＰＥＮＡＮＡ4zvGtp97zY
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1542Please respect copyright.ＰＥＮＡＮＡgY6J3L83Su
1542Please respect copyright.ＰＥＮＡＮＡzvI5zRTkXU
1542Please respect copyright.ＰＥＮＡＮＡzNxgseCqUc
有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。1542Please respect copyright.ＰＥＮＡＮＡJhXdZSSCf2
8964 copyright protection1538ＰＥＮＡＮＡcRnqeWeKNF 維尼

216.73.216.224