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.
Vellum - Manufacture. 1  Vellum is a translucent material produced from the skin, often split, of a young animal. 2  Any remaining hair is removed (scudding) and the skin is dried by attaching it to a frame (a herse). [14] 3  Once the skin is completely dry, it is thoroughly cleaned and processed into sheets.