Since a tryptophan is a nutritionally essential aminoacid, what can be said of the nutritional value?

Question

Since a tryptophan is a nutritionally essential aminoacid, what can be said of the nutritional value of gelatin as a sole of protein in the diet?

Answer 1

Household gelatin comes in the form of sheets, granules or as powder. Instant types can be added to the food as they are; others need to be soaked in water beforehand.

Special kinds of gelatin are made only from certain animals or from fish (known as K-gelatin) in order to comply with Jewish kosher or Muslim halal laws. Vegetarians and vegans may substitute similar gelling agents such as agar, nature gum, carrageenan, pectin, or konnyaku sometimes referred to as "vegetable gelatins" although there is no chemical relationship; they are carbohydrates, not proteins. The name "gelatin" is colloquially applied to all types of gels and jellies; but properly used, it currently refers solely to the animal protein product. There is no vegetable source for gelatin.