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？1588Please respect copyright.ＰＥＮＡＮＡ4d1jbUeioz
1588Please respect copyright.ＰＥＮＡＮＡyam48dTF5A
1588Please respect copyright.ＰＥＮＡＮＡbi0QysVAH2
答案就在於舌頭上的味蕾感測機制之上。1588Please respect copyright.ＰＥＮＡＮＡEv4v9ahrZr
1588Please respect copyright.ＰＥＮＡＮＡYQDyPyrEJK
（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。1588Please respect copyright.ＰＥＮＡＮＡ3v1TvXnFNe
以感測甜味為例，以下為扼要的簡化過程。1588Please respect copyright.ＰＥＮＡＮＡcpLgconRHU
1588Please respect copyright.ＰＥＮＡＮＡQ3G0QrQ69z
1588Please respect copyright.ＰＥＮＡＮＡHi76hykPae
1.甜味物質與味蕾上的T1R2及T1R3合併。1588Please respect copyright.ＰＥＮＡＮＡMd7lEI6HYF
(Type1 Taste Receptor member 2 and 3)1588Please respect copyright.ＰＥＮＡＮＡN8A1I84UMP
1588Please respect copyright.ＰＥＮＡＮＡrIxd6Hg9bP
2.其後觸發一系列的細胞反應，並產生出鈣離子(Ca2+ ion)。1588Please respect copyright.ＰＥＮＡＮＡxtECPm6Gz7
1588Please respect copyright.ＰＥＮＡＮＡaZDaFJXzqX
3. 鈣離子觸動TRPM5，產生電流。1588Please respect copyright.ＰＥＮＡＮＡJu2iduPAAj
1588Please respect copyright.ＰＥＮＡＮＡrH2rM0iOIo
4. 電流經由神經細胞傳到大腦。1588Please respect copyright.ＰＥＮＡＮＡmCoRIwQ6aa
1588Please respect copyright.ＰＥＮＡＮＡmZTjrHFm4Q
5. 大腦分析電流訊息，製造甜味的感覺。1588Please respect copyright.ＰＥＮＡＮＡAr9AfTxow2
1588Please respect copyright.ＰＥＮＡＮＡM58Cwkz1PG
（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。1588Please respect copyright.ＰＥＮＡＮＡRUpDdBV93r
1588Please respect copyright.ＰＥＮＡＮＡermWYOcVZc
1588Please respect copyright.ＰＥＮＡＮＡrOvR1OmJ7d
TRPM5除了能夠感測鈣離子後，亦能感測溫度。1588Please respect copyright.ＰＥＮＡＮＡxgIB5GvFWf
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。1588Please respect copyright.ＰＥＮＡＮＡLApLhLKbrd
而電流越強的話，大腦便會轉遞出越甜的感覺。1588Please respect copyright.ＰＥＮＡＮＡD5C1dciHYW
1588Please respect copyright.ＰＥＮＡＮＡcsezZKk8oS
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。1588Please respect copyright.ＰＥＮＡＮＡCRKoRgXdot
1588Please respect copyright.ＰＥＮＡＮＡUkVhLQh8NB
1588Please respect copyright.ＰＥＮＡＮＡwlPD7CVMpm
1588Please respect copyright.ＰＥＮＡＮＡrsJSuXSJbx
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。1588Please respect copyright.ＰＥＮＡＮＡVaeyZRbg7i
1588Please respect copyright.ＰＥＮＡＮＡioTUW093i3
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/toc1588Please respect copyright.ＰＥＮＡＮＡILp7ltiWWm
1588Please respect copyright.ＰＥＮＡＮＡJU9PMgDqr3
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。1588Please respect copyright.ＰＥＮＡＮＡkvVBX9KrxY
1588Please respect copyright.ＰＥＮＡＮＡANVA7BwnS3
Link:1588Please respect copyright.ＰＥＮＡＮＡ6U8VGQmWM5
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1588Please respect copyright.ＰＥＮＡＮＡnHyoIZv2cb
1588Please respect copyright.ＰＥＮＡＮＡffut7vsy0Z
1588Please respect copyright.ＰＥＮＡＮＡMkG9aRLQ05
有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。1588Please respect copyright.ＰＥＮＡＮＡyg5A6dZL6f

ns216.73.216.190da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章