Beans are not good sources of either zinc or iron, and they have low protein digestibility because these legumes are chock full of antinutrients that impair our bodyâs ability to absorb and assimilate potential nutrients found in these foods.eans are not good sources of either zinc or iron, and they have low protein digestibility because these legumes are chock full of antinutrients that impair our bodyâs ability to absorb and assimilate potential nutrients found in these foods.
Vellum (derived from the Latin word vitulinum meaning made from calf, leading to Old French vÃ©lin, calfskin) often refers to a parchment made from calf skin, as opposed to that from other animals. It is prepared for writing or printing on, to produce single pages, scrolls, codices or books.
Parchment with a quill and ink. Parchment is a writing material made from specially prepared untanned skins of animalsâprimarily sheep, calves, and goats. It has been used as a writing medium for over two millennia. Vellum is a finer quality parchment made from the skins of young animals such as lambs and young calves. It may be called animal membrane by libraries and museums that wish to avoid distinguishing between parchment and the more restricted term vellum.