"Roughly 3 grams out of every ten grams of gelatin or collagen is glycine". I've seen this figure repeated by others as well but according to Cronometer's NCCDB data, you actually get roughly 2 g (1.9 g to be more precise) of glycine per 10 g of plain gelatin. In terms of protein you get a similar ratio (2.2 g of glycine per 10 g).
"Roughly 3 grams out of every ten grams of gelatin or collagen is glycine". I've seen this figure repeated by others as well but according to Cronometer's NCCDB data, you actually get roughly 2 g (1.9 g to be more precise) of glycine per 10 g of plain gelatin. In terms of protein you get a similar ratio (2.2 g of glycine per 10 g).
No matter how you look at it, every 10 g is ~1/5 glycine; something similar happens with pork skin and some collagen peptide products I've checked. Something might be missing from my equation.
A figure I have from the literature is 29%, which trumps anything from USDA since USDA does not even trust their own amino acid data. But it may be quite variable depending on source.
"Roughly 3 grams out of every ten grams of gelatin or collagen is glycine". I've seen this figure repeated by others as well but according to Cronometer's NCCDB data, you actually get roughly 2 g (1.9 g to be more precise) of glycine per 10 g of plain gelatin. In terms of protein you get a similar ratio (2.2 g of glycine per 10 g).
No matter how you look at it, every 10 g is ~1/5 glycine; something similar happens with pork skin and some collagen peptide products I've checked. Something might be missing from my equation.
Regardless, very interesting article.
A figure I have from the literature is 29%, which trumps anything from USDA since USDA does not even trust their own amino acid data. But it may be quite variable depending on source.