I have all the fruit needed for the fruit trophy, but the trophy itself didn't show up when I made the last one (similar spices and bubble trophy worked fine).
I have the same situation. I have made every fruit several times, but no trophy. I once made sure I had at least one of each in my inventory all at the same time, just to be sure, but alas. Like Lukie, I haven't had any trouble getting other trophies (spice, bubble, gas, and emblem so far).
@Lukie You have to have all the fruits in your inventory to earn the trophy. Same with the trophy you get for collects all the different kinds of gasses.