Hello everyone. Hope this question find you well.

I was recently reading about fatty acids because my master thesis is going to be about them and the most of their perspectives, like a review. And a question arose since I read in a book that there are some trans-unsaturated fatty acids found in nature (microalgae, bacteria, plant, etc), I can assume why and their reasons to be, but my question is that if these trans-unsaturated fatty acids can turn in cis fatty acids because some enviromental condition, as a reduction in the environmental stress to which it may have been subjected the sample.

I was searching for some information that can answer my question, but nothing at the moment. I'll appreciate so much your help with this. Thank you!