科普專欄–薯不揀單 - 深入淺出–為何熱紅豆沙食起上來會比凍紅豆沙感覺更甜

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？1479Please respect copyright.ＰＥＮＡＮＡsxuFMtWo0A
1479Please respect copyright.ＰＥＮＡＮＡfnIAVoFwvV
1479Please respect copyright.ＰＥＮＡＮＡDY4LLzggrK
答案就在於舌頭上的味蕾感測機制之上。1479Please respect copyright.ＰＥＮＡＮＡvGuvvG7bNv
1479Please respect copyright.ＰＥＮＡＮＡvrVePo9bCh
（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。1479Please respect copyright.ＰＥＮＡＮＡyGSehJLha2
以感測甜味為例，以下為扼要的簡化過程。1479Please respect copyright.ＰＥＮＡＮＡCj6ymvLmlC
1479Please respect copyright.ＰＥＮＡＮＡdMQgZmBqG9
1479Please respect copyright.ＰＥＮＡＮＡxW4iQ4oWcr
1.甜味物質與味蕾上的T1R2及T1R3合併。1479Please respect copyright.ＰＥＮＡＮＡ5H6WfFNQeU
(Type1 Taste Receptor member 2 and 3)1479Please respect copyright.ＰＥＮＡＮＡWL0mwWhj9p
1479Please respect copyright.ＰＥＮＡＮＡOFEligFOWs
2.其後觸發一系列的細胞反應，並產生出鈣離子(Ca2+ ion)。1479Please respect copyright.ＰＥＮＡＮＡ0jyZbOI9xF
1479Please respect copyright.ＰＥＮＡＮＡdVVzHTXC5e
3. 鈣離子觸動TRPM5，產生電流。1479Please respect copyright.ＰＥＮＡＮＡ4vIOK8RR7g
1479Please respect copyright.ＰＥＮＡＮＡKGLwx0oyq7
4. 電流經由神經細胞傳到大腦。1479Please respect copyright.ＰＥＮＡＮＡADOjkFvMBT
1479Please respect copyright.ＰＥＮＡＮＡA8gIj6DOla
5. 大腦分析電流訊息，製造甜味的感覺。1479Please respect copyright.ＰＥＮＡＮＡxSmXGgM07b
1479Please respect copyright.ＰＥＮＡＮＡK9ktDoTuJQ
（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。1479Please respect copyright.ＰＥＮＡＮＡLvCMvcAyIX
1479Please respect copyright.ＰＥＮＡＮＡeik9ojqRSy
1479Please respect copyright.ＰＥＮＡＮＡRCulxuUeCR
TRPM5除了能夠感測鈣離子後，亦能感測溫度。1479Please respect copyright.ＰＥＮＡＮＡDF3MauSqrm
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。1479Please respect copyright.ＰＥＮＡＮＡP8qY4EZNfC
而電流越強的話，大腦便會轉遞出越甜的感覺。1479Please respect copyright.ＰＥＮＡＮＡdxpISqCvDy
1479Please respect copyright.ＰＥＮＡＮＡVzud7gjFfw
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。1479Please respect copyright.ＰＥＮＡＮＡQ8tvRVSkkH
1479Please respect copyright.ＰＥＮＡＮＡvkrsC4ajbW
1479Please respect copyright.ＰＥＮＡＮＡVTa0P7v0gQ
1479Please respect copyright.ＰＥＮＡＮＡKRdXnWqXbz
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。1479Please respect copyright.ＰＥＮＡＮＡ3U4svBXzL1
1479Please respect copyright.ＰＥＮＡＮＡDXtpeEjkoU
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/toc1479Please respect copyright.ＰＥＮＡＮＡ9lAP3LO5QA
1479Please respect copyright.ＰＥＮＡＮＡRiJUxBv03a
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。1479Please respect copyright.ＰＥＮＡＮＡDQv8rKrxe0
1479Please respect copyright.ＰＥＮＡＮＡjEISFH2ooo
Link:1479Please respect copyright.ＰＥＮＡＮＡZsArqVuZWo
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1479Please respect copyright.ＰＥＮＡＮＡPkr2cfeLll
1479Please respect copyright.ＰＥＮＡＮＡfsK228ezGV
1479Please respect copyright.ＰＥＮＡＮＡZOlI1fIjQA
有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。1479Please respect copyright.ＰＥＮＡＮＡgve24BYqdx

ns3.144.148.228da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章