Quality Protein Maize (QPM) contains nearly twice as much usable protein as other maize (or corn) grown in the tropics and yields 10% more grain than traditional varieties of maize. It was developed by Dr. Surinder Vasal and Dr. Evangelina Villegas at the International Maize and Wheat Improvement Center (CIMMYT) in the late 1990’s. For their achievement, they won the 2000 World Food Prize.

120 grams of lean beef contain 25 grams of high quality proteins, almost totally assimilable, unlike the plant proteins, which the body assimilates just in a proportion of 50-65 %. But proteins from the meatcan be replaced by various foods.

The egg is a highly nutritious and functional food. It contains one of the highest quality proteins one can get. Egg protein has just the right mixture of essential amino acids needed by humans to build a strong body. Next to mother's milk, it is the second most nutritious food for human consumption.

Is it hard for vegans to get enough protein in their diet? Does plant protein get contain all the essential amino acids? Do vegans have to carefully combine plant foods in order to get high quality protein?