Natural dough conditioners and preservatives

Toast

I'm trying to find an all natural and inexpensive dough conditioner to prolong the shelf lid of my product without compromising the taste and structure. Preferably something that doesn't break the bank as well. Thanks!

Adding ascorbic acid will help the yeast and will also act as a preservative. This is good for bread using baker's yeast.

Or, if you want to venture into sourdoughs they do last longer. The fermentation process gives it a longer shelf life.