Biological Heart Valves. Biological Heart Valves are made of tissues and valves derived from animals or human donors. Their biggest advantage is that they do not cause blood clotting on their surface and truly replicate the form and function of the normal human valve.
The biggest difference between cured and uncured is the fact that the uncured uses natural curing agents, such as celery powder, which transforms into nitrite when it is processed. Thus, uncured products have labels with: âNo Nitrates or Nitrites added except those naturally in celery powder or juiceâ.
Experts recommend freezing uncooked, uncured and fresh ham for 6 months or less. If the ham has already been cooked, it should be frozen for 2 months or less. If you plan on freezing a ham for more than a couple of months, you should buy it uncooked, put it in the freezer and then thaw it when you are ready to cook it.