I think that may have more to do with your opinion on the wholesomeness of vegetable shortening than anything else. I'm no scientist, but I think the amount of shortening incorporated into the finished product will be so minimal that even negative effects are greatly mitigated.
Personally, I use a "pan release" formula I originally learned [I'm pretty sure] from Stan Ginsberg's book "Inside the Jewish Bakery". It uses vegetable shortening, vegetable oil and AP flour, in equal parts. It is shelf-stable, and I keep a small jar of it on my baking shelf that I replenish as needed by whisking 1/3 Cup each of the above in a small bowl until smooth. For all my pan loaves, I just brush the inside of the pan with a thin layer of this release formula, then lay the dough in, or scrape the batter in for quick breads and such. It never sticks, and I clean up the pans afterward with just a paper towel. I wipe them clean and put them away. In my personal experience it works perfectly, and it is super simple.
Will greasing the Pullman loaf pans with vegetable shorting effect the wholesomeness of the finished product?
I think that may have more to do with your opinion on the wholesomeness of vegetable shortening than anything else. I'm no scientist, but I think the amount of shortening incorporated into the finished product will be so minimal that even negative effects are greatly mitigated.
Personally, I use a "pan release" formula I originally learned [I'm pretty sure] from Stan Ginsberg's book "Inside the Jewish Bakery". It uses vegetable shortening, vegetable oil and AP flour, in equal parts. It is shelf-stable, and I keep a small jar of it on my baking shelf that I replenish as needed by whisking 1/3 Cup each of the above in a small bowl until smooth. For all my pan loaves, I just brush the inside of the pan with a thin layer of this release formula, then lay the dough in, or scrape the batter in for quick breads and such. It never sticks, and I clean up the pans afterward with just a paper towel. I wipe them clean and put them away. In my personal experience it works perfectly, and it is super simple.
All systems go. Time minus 30 minutes until bake-off!