Why don't chicken and turkey sausages typically have sodium nitrate, but other meat sausages do?

It's just something I've noticed while shopping. All of the chicken and turkey sausages I've seen (across multiple brands) do not contain sodium nitrate, but all beef- and pork-based sausage always has sodium nitrate.
I vaguely understand the role of nitrates in the food safety of cured meats, but I'm wondering what is it specifically about turkey and chicken that don't require nitrates.
Best Answer
Check this essay: Time-dependent depletion of nitrite in pork/beef and chicken meat products and its effect on nitrite intake estimation
Check the Figure.1, while preserving meat in long days, the nitrite content in chicken sausage is much higher than pork/beef sausage.
For food safety, Nitrosamine where is transformed from nitrite is an important cancer factor. So there are only pork/beef(red meat) sausage in market but not for turkey/fish(white meat).
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Quick Answer about "Why don't chicken and turkey sausages typically have sodium nitrate, but other meat sausages do?"
1, while preserving meat in long days, the nitrite content in chicken sausage is much higher than pork/beef sausage. For food safety, Nitrosamine where is transformed from nitrite is an important cancer factor. So there are only pork/beef(red meat) sausage in market but not for turkey/fish(white meat).Does turkey sausage have sodium nitrates?
Nitrates can be added to any processed meat, including deli meat, bacon, sausage, hot dogs, salami, chorizo and jerky. Technically, turkey and chicken made with nitrates fall into this category, too.Does turkey sausage have more sodium than pork sausage?
Two ounces of turkey sausage contain 80 to 100 calories, 4 to 8 grams of fat and 500 milligrams of sodium, while pork sausage contains 222 calories, 18 grams of fat and 900 milligrams of sodium.Which sausages do not have nitrates?
Fresh sausages (like Italian sausage, for example) don't contain nitrates because you're just making them with fresh meat and natural salt (and not curing salt). If you want to make dry-cured sausages, however, then you'd be adding curing salt to the mix, which does contain sodium nitrite and sodium nitrate.Does ground turkey sausage have nitrates?
But turkey sausage also has nitrates. Although It turns out that turkey is safer than its pork counterpart when it comes to nitrate consumption (and therefore nitrosamide consumption), salt can also be an issue because it enhances the presence of nitrites/nitrates in foods. Nitrates cause heart disease and cancer.Why Don't We - Fallin' (Adrenaline) [Official Music Video]
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Answer 2
i did some research and this is what i found...There are two reasons for adding this chemical to processed meats:It prevents the growth of the bacteria that spoils meat and preserves the meat as a red or pink color. There is some evidence that it also prevents botulism. And Sodium nitrate is not added to chicken or tuna, as there is no red color to preserve. Thats it!
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