Answer:
I believe that the process that prepares the pig skin is meant to remove all the cells and living material so that only collagen (an acellular material) remains. The FDA has reviewed and approved this process. To my knowledge, this material is not "organic" in the culinary sense, but it's just not a synthetic product. I have used both of these materials and had very good outcomes with both, however detailed questions about surgical risks should be directed to your surgeon.