Lemons taste sour because they contain a component called citric acid. If you test the acidity of citric acid with a PH test paper, the pH is usually around 2.

This shows that citric acid has a high acidic content. As the flavor of citric acid is sour, and the main component of lemon is citric acid, so lemon tastes naturally sour, you can say, lemon is a very sour fruit.

Although lemon is very sour, but lemon contains a lot of vitamin C, has a whitening effect, contains citric acid specific inhibit the role of calcium salts, but also to prevent stones, long-term lemon slices of water is also on the cardiovascular help.

/iknow-pic.cdn.bcebos.com/a50f4bfbfbedab649c8a3fb9f936afc378311eca "target="_blank "title=""class="ikqb_img_alink">/iknow- pic.cdn.bcebos.com/a50f4bfbfbedab649c8a3fb9f936afc378311eca?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2CCh_800%2Climit_1% 2Fquality%2Cq_85%2Fformat%2Cf_auto "esrc="/n1/2019/0313/c14739-30973463.html "target="_blank "title="People's health network - four kinds of foot soak than take medicine tube use">People's health network - four kinds of foot soak than Take the medicine works