为什么感冒鼻塞时吃东西觉得没味道？
Why does food taste flavorless when you have a blocked nose?
我们感受到的风味大部分来自嗅觉；鼻子不通时食物挥发的气味分子到不了嗅觉受体，于是只剩下甜咸酸苦等基础味觉。
Most of flavor is actually smell; with a blocked nose, odor molecules can't reach olfactory receptors, leaving only basic tastes like sweet, salt, sour and bitter.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#味觉 #嗅觉 #风味
为什么有人觉得某苦味纸片极苦有人却无感？
Why do some people find a bitter paper strip intensely bitter while others taste nothing?
对PTC、PROP苦味的感知由TAS2R38基因决定，基因型不同，有人极敏感，有人尝不出，体现人类味觉的遗传差异。
Sensitivity to PTC/PROP bitterness is set by the TAS2R38 gene; variants make some people highly sensitive and others unable to taste it—a genetic taste difference.
难度 专业 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#苦味 #基因 #味觉
味精的鲜味到底是什么物质？
What compound gives MSG its umami taste?
主要是谷氨酸钠，它能激活舌头上的鲜味受体，和番茄、海带、奶酪里的天然谷氨酸是同一类物质。
It is sodium glutamate, which activates umami receptors—the same family as natural glutamate in tomatoes, kelp and cheese.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#味精 #谷氨酸 #鲜味
舌头不同区域分别只尝甜咸酸苦，这是真的吗？
Is it true that tongue regions taste only sweet, salt, sour or bitter?
这是过时说法；实际上所有味蕾都能感知各种基本味觉，只是灵敏度略有差异，并没有严格分区。
That is outdated; all taste buds sense every basic taste with slight sensitivity differences, not strict zones.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#味觉 #舌图 #误区
为什么酱油又咸又鲜？
Why is soy sauce both salty and savory?
米曲霉等分泌蛋白酶把大豆蛋白分解成氨基酸（谷氨酸带来鲜味），加盐既调味又抑制杂菌，长期晒酿而成。
Aspergillus oryzae releases proteases that break soy protein into amino acids (glutamate = umami); salt seasons and prevents spoilage during long brewing.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#酱油 #发酵 #鲜味
辣椒的辣味是真的味道吗，为什么喝水不解辣？
Is chili heat a real taste, and why doesn't water relieve it?
辣来自辣椒素激活痛觉受体（TRPV1），不是酸甜苦咸鲜那种味觉；辣椒素不溶于水，所以喝水没用，喝牛奶（脂肪）更有效。
Capsaicin activates pain receptors (TRPV1), not the tastes; it is oil-soluble, so water doesn't help—milk fat does.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#辣椒 #辣椒素 #受体
薄荷为什么让人觉得凉？
Why does mint feel cool?
薄荷醇能激活皮肤里的冷觉受体（TRPM8），大脑误以为温度下降，于是产生清凉感。
Menthol activates cold receptors (TRPM8) in the skin, so the brain perceives a cooling sensation without actual cooling.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#薄荷 #薄荷醇 #冷觉
为什么辣椒吃起来会辣辣的？
Why does chili pepper taste hot and spicy?
辣椒里有一种叫辣椒素的成分，它会骗我们的舌头，让大脑以为嘴巴被烫到了。辣椒素会抓住舌头上的热觉受体，所以越吃越觉得烧，喝水也压不住那种辣。
Chili has a chemical called capsaicin that tricks our tongue and makes the brain think the mouth is being burned. Capsaicin grabs the heat-sensing receptors on the tongue, so the burning feeling grows and water does not wash it away.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#辣椒 #辣 #味觉
为什么薄荷糖吃起来凉凉的？
Why does mint taste cool and fresh?
薄荷里有一种叫薄荷醇的成分，会打开嘴巴里感受凉意的传感器，让我们觉得凉。它骗了舌头，就像冷风一样，其实薄荷本身并不冷。
Mint contains a substance called menthol that switches on the cool-sensing receptors in our mouth, so we feel cold. It tricks the tongue the way cold air would, even though mint is not actually cold.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#薄荷 #凉 #味觉
为什么咖啡喝起来苦苦的？
Why does coffee taste bitter?
咖啡里有几种苦苦的物质，舌头尝到就会觉得苦。
Coffee has a few bitter chemicals that the tongue tastes as bitter.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#咖啡 #苦 #味觉
香草味主要来自什么物质？
What compound gives vanilla its scent?
主要是香兰素，天然来自香草豆，也能人工合成。
The scent comes mainly from vanillin, naturally from vanilla beans and also made synthetically.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#香草 #香兰素 #气味
为什么臭奶酪闻起来那么臭？
Why does stinky cheese smell so strong?
做奶酪时加的小细菌会慢慢分解里面的脂肪和蛋白质，产生一种味道很冲的气体。这种气体里含有硫，闻起来像脚臭或臭袜子，但正是它让奶酪风味独特。
Tiny bacteria added to make cheese break down fats and proteins and release a gas with a very strong smell. That gas contains sulfur, which smells like stinky socks, but it is exactly what gives the cheese its strong flavor.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#奶酪 #细菌 #气味
为什么姜吃起来辣辣的还有点麻？
Why does ginger taste spicy and a little tingling?
姜里有特殊的油状物质会刺激舌头和嗓子，让我们觉得辣和麻。这种成分叫姜辣素，它和辣椒素不一样，除了辣还会带来一阵麻麻的刺痛感。
Ginger has special oily compounds that tingle the tongue and throat, feeling spicy. The compound is called gingerol, and unlike capsaicin it adds a numbing, prickly sensation on top of the heat.
难度 入门 · 适合 小学高段(9-12)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#姜 #辣 #味觉
为什么香草冰淇淋有香香的味道？
Why does vanilla ice cream smell so good?
香草里有一种香香的小分子，叫香兰素，它钻进鼻子里，我们就觉得香。人的鼻子对香兰素特别敏感，只有很少一点就能闻到，所以香味闻起来很浓。
Vanilla has a sweet-smelling molecule called vanillin that floats into our nose and smells lovely. Our noses are extremely sensitive to vanillin, so only a tiny amount is needed to smell it, which is why vanilla scent is so strong.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#香草 #香味 #分子