抛开咸淡豆腐，就说这个回答，很有政治家的风范：

I'd say the changes are physicochemical as you are not creating new bonds (or compounds) but you are changing the nature of the proteins by breaking their internal weak bonding interactions.

看看这几个加粗部分，俩词跟你结合起来，含糊吧？
然后又说|"没改变“，BUT！又说"有改变“！

这人绝对可以搞政治！