Meanwhile, sour-tasting acidic foods are high in hydrogen ions and take a different route by activating proton channels.
同时，酸味的酸性食物富含氢离子，通过激活质子通道采取不同的路线。
英语百科
Proton pump
（重定向自Proton channel）
A proton pump is an integral membrane protein that is capable of moving protons across a biological membrane. Mechanisms are based on conformational changes of the protein structure or on the Q cycle.