食物進入人體後的酸鹼變化

不嫌煩瑣，但大家都可能不確切肯定所以不敢答你。

所以讓我答肯定的部份吧。
「食物進入胃後，會有什麼酸鹼變化」

食物一進入胃中時，胃酸即開始分泌。胃在排空時 pH 值約在 7.0 ~ 7.2 間，當食團進入胃中時，pH 值可降達 2 ~ 3 之間。是屬於強酸度！

參考：
http://tw.knowledge.yahoo.com/question/question?qid=1405102304489
http://answers.yahoo.com/question/index?qid=20080509030334AAWD21A

至於你問身體其他的部位，我也找到一些資料，希望對你有幫助：


pH Levels in the Human Body
In general, the pH level of the blood is slightly alkaline, at 7.4. The pH range of blood is very very narrow and usually, it does not go anywhere beyond 7.35-7.45, with the ideal pH being 7.4. Basically, when an individual is healthy, then his body pH is balanced between an alkaline and an acidic environment. However, the pH for various parts of the digestive system varies according to the organ and the pH need of the enzymes. These are enlisted below:


Mouth: The pH of saliva is usually slightly acidic to neutral, hovering around 6.5 to 7.5, so as to ensure proper functioning of the enzyme salivary amylase or ptyalin.

Stomach: The pH of stomach is very low and highly acidic, being around 4 to 6 in the upper stomach and around 1.5 to 3 in the lower stomach! This low pH is due to the hydrochloric acid in stomach, which helps to ensure proper functioning of enzymes pepsin.

Intestines: The pH of the intestines is usually slightly acidic to neutral, being around 5 to 7, as this is the pH at which the enzymes in this region functions

參考：
http://www.buzzle.com/articles/ph-levels-in-the-body.html

By Dr. Sumaiya Khan
Published: 11/29/2010

2013-08-20 15:46:22 補充：
感謝分享～　^o^
願意上前回答否？

2013-08-22 09:40:55 補充：
馬克是這方面的知識友。
請作答。

1. 口,→近中性
2.食道→近中性
3.胃→強酸,
4.小腸,→鹼性
5.大腸→近鹼性
6. 肝→鹼性,
7.膽,→鹼性
8.膀胱→近中性

2013-08-22 08:43:54 補充：
這個問題只是問消化道(消化液)和尿液的酸鹼性而已。
你掌握住口腔食道(唾液)近中性，胃(胃液)中為強酸、小腸(膽汁、胰液、小腸液)為鹼性即可。
而尿液也負責排出一部份氫離子，故易呈弱酸性。