The terms potato and protein don't often come up in the same sentence--probably because we think of potatoes solely as a starch source. But in our ever-expanding search for useful ingredients in the petfood industry, potato protein, a concentrated extract from the potato tuber, has turned up in several specialty petfoods in the last couple of years.
Like other concentrated vegetable proteins-for example, soy protein concentrate, wheat gluten or rice protein concentrate-potato protein is low in ash, retains some modest amount of food functionality and has a high content of protein and corresponding essential amino acids. In addition, like the others, it can:
