Maize (Zea mays L.) is a grass native to North America (the United States is the largest producer in the world). It is an annual plant. The caryopsis contains about 5% of oil of which 80% is concentrated in the germ. To extract the oil, the germ is

The sunflower (Helianthus annus L.) native to the Americas, arrived in Europe in the 16th century. It is an annual plant that reaches full maturity after about 4 months from sowing. There are two varieties: one with a high content of linoleic acid, the other of oleic acid.

The sunflower (Helianthus annus L.) native to the Americas, arrived in Europe in the 16th century. It is an annual plant that reaches full maturity after about 4 months from sowing. There are two varieties: one with a high content of linoleic acid, the other of oleic acid.