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.PENANARwcGZpyFWs1588Please respect copyright.PENANAmzZ0ZipNlQ
1588Please respect copyright.PENANALMfPm3DuKQ
答案就在於舌頭上的味蕾感測機制之上。1588Please respect copyright.PENANAA2XT3dsP20
1588Please respect copyright.PENANAw2aXxUFbNy
(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.PENANAuV5NKJdiyI
以感測甜味為例,以下為扼要的簡化過程。1588Please respect copyright.PENANAIvf7SK7fWK1588Please respect copyright.PENANANnPgMcpsB1
1588Please respect copyright.PENANAI5Tua0xK2j
1.甜味物質與味蕾上的T1R2及T1R3合併。1588Please respect copyright.PENANAkMbb8Z5LnA
(Type1 Taste Receptor member 2 and 3)1588Please respect copyright.PENANAhIwsJG6Nxj
1588Please respect copyright.PENANAo5ipsQvfMQ
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.PENANAqpC5lg2Lxj
1588Please respect copyright.PENANAoeSAUVGYu5
3. 鈣離子觸動TRPM5,產生電流。1588Please respect copyright.PENANAKS5sL1jEPj
1588Please respect copyright.PENANAYkqlZieYSK
4. 電流經由神經細胞傳到大腦。1588Please respect copyright.PENANARhMwyLSaGO
1588Please respect copyright.PENANAcs5SNygNiU
5. 大腦分析電流訊息,製造甜味的感覺。1588Please respect copyright.PENANAIr1oO2JDXB
1588Please respect copyright.PENANAfIpMaqezh2
(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.PENANAMRDYMpgxwa1588Please respect copyright.PENANArDPyhdP6nt
1588Please respect copyright.PENANAuxtn2pke2q
TRPM5除了能夠感測鈣離子後,亦能感測溫度。1588Please respect copyright.PENANADuEAFxi0aE
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.PENANALkrBfNd6UG
而電流越強的話,大腦便會轉遞出越甜的感覺。1588Please respect copyright.PENANAcaK30n9oNt
1588Please respect copyright.PENANABVoDyB9QVa
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.PENANAeCl8QAam5x
1588Please respect copyright.PENANAboDCOv2bZ8
1588Please respect copyright.PENANAgY86hAuCii
1588Please respect copyright.PENANAEDjAlZcPYQ
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.PENANALkkqVyDh78
1588Please respect copyright.PENANAqmJYQTAmhK
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.PENANAHy4hyktO9e
1588Please respect copyright.PENANAGQ2Oe2Fm4q
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.PENANA9psmFI9RiJ
1588Please respect copyright.PENANA8ewwsSmx5A
Link:1588Please respect copyright.PENANAxiG5vxLeUJ
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1588Please respect copyright.PENANAQhBlCF2NHS
1588Please respect copyright.PENANALFdFhBGYkh
1588Please respect copyright.PENANAywimI7FcAr
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。1588Please respect copyright.PENANAUw5kfmU5Ov
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 1584
書籤 150
campaign
催更 0
打賞

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