你有無曾經試過,加少少鹽到甜味的食物之後,感覺反而會更加甜?720Please respect copyright.PENANA8yavbfVC9Q
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究竟是心理作用,還是有確實的機制存在呢?720Please respect copyright.PENANAdJkR4nL4bQ
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(圖2)早前曾經深入淺出舌頭的甜味感測機制,可到這裡溫故知新:https://www.penana.com/article/474464720Please respect copyright.PENANAKKlAkM5GW3
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簡單來說,甜味物質與味蕾上的T1R2及T1R3合併,其後觸發一系列的反應,最終導致電流經由神經細胞傳到大腦,再由大腦分析電流訊息,製造甜味的感覺。720Please respect copyright.PENANAy7d4pCvq1c
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(圖3)除T1R之外,舌頭上亦有名為SGLT1的蛋白質。720Please respect copyright.PENANAReMUzsu5LS
當有葡萄糖及鈉離子(從NaCl食用鹽得來)同時存在的話,SGLT1便會把葡萄糖及鈉離子同時收入細胞之內,觸發感測甜味的機制。720Please respect copyright.PENANATaF5EguD19
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這SGLT1蛋白質只會對葡萄糖及鈉離子產生反應,換言之,代糖以及鉀鹽便不會觸發這一套機制。720Please respect copyright.PENANAVdO2XHcDvT
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我們舌頭上相信有三種感測甜味的細胞,只擁有T1R、只擁有SGLT1以及同時擁有T1R和SGLT1。720Please respect copyright.PENANAVx3YQgUeq7
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鈉離子與葡萄糖的存在,將會在T1R的前提下額外觸發SGLT1的機制,因此我們主觀上會感覺到甜味的感覺更為強烈。720Please respect copyright.PENANA95BFp99jL6
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當然,若然食用鹽(NaCl)添加過量的話,鹹味最終會蓋過所增進的甜味效益。720Please respect copyright.PENANABWiUnb4gFd
而如何拿掐箇中的平衡,那就要取決於廚師的功力和經驗了。720Please respect copyright.PENANACLdvirPx1M
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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。720Please respect copyright.PENANAh2fFpkOCgx
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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/toc720Please respect copyright.PENANAKRdc5DFczB
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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。720Please respect copyright.PENANATsqp9toxoP
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Link:720Please respect copyright.PENANAVNc6yPUzFx
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio720Please respect copyright.PENANAkaHaOUv1W8
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有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。720Please respect copyright.PENANAiKHtIriD6q
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Ref1:https://www.cell.com/cell/fulltext/S0092-8674(03)00844-4?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0092867403008444%3Fshowall%3Dtrue720Please respect copyright.PENANAd1aCYG6uxz
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Ref2:https://onlinelibrary.wiley.com/doi/epdf/10.1111/apha.13529720Please respect copyright.PENANApPbDoN5gnc