I am sorry, your symptoms are because, as you think, "possibly the fruit juice fermenting in the gut."
You cannot possibly tell me that this is the first time you have had fruit juice in your entire life?
And "lack of minerals" is not just because you had some thing to eat or drink that did not agree with you. It is because your system is being robed of them by an organism.
Anyway, if you don't suspect that something is wrong, you MAY find out the hard way later that it is parasites. But it may be too late because you may by then have ben told by a doctor it is IBS or Crohn's. Many who have so called Crohn's and who said to have this mysterious "imbalance" of the stomach have parasites which doctors cannot find. SO I would be very careful when you say people who have Crohn's don't have parasites. YOU don't know that. And neither do the doctors who simply call this condition Crohn's and know nothing about parasites.
Ask so many on the forums here why "comprehensive stool analysis tests" are never "comprehensive"! Some of us have done more than 30 plus stool tests, with so called "reputable labs," until we went to a real parasitologist to find out why the labs could not detect the parasites. Most labs used preservatives , and hardly examine fresh stool within half hour of taking them. Also, some parasites specially protozoa are not just in the stool, often deep in the bowel tissue, and stool is a convenient vehicle passing by. Your labs will not know this.
My point is that if you have these symptoms and they came out of nowhere, then there is a cause, and surely it is not "fruit juices" fermenting" causing "lack of minerals"!
I wonder If you already were convinced of this, I wonder why you came to this forum asking for help?