**1. Introduction**

The word vegetable is derived from Medieval Latin vegetabilis "growing, flourishing" (i.e. of a plant), a semantic change from a Late Latin meaning "to be enlivening, quickening" while the meaning of "vegetable" refers to as a "plant grown for food" [1].

Vegetables are known as the segments of plants that serve as food to humans and other animals. It is often regarded collectively as edible plant matter, including flowers, fruits, stems, leaves, roots, and seeds.

Vegetable gathering from the wild was done by hunter-gatherers. This evolved to the cultivation of vegetables in several parts of the world during the period 10,000 BC to 7000 BC following the development of a new agricultural way of life. Primarily, plants grown locally would have been cultivated. However, with time, various exotic crops from other regions were introduced to the local market. Presently, the production of most vegetables around the world is highly dependent on the climate and crops may be cultivated as protection for the environments in less appropriate areas. The level of vegetable production varies as a result of the purpose, on the one hand, subsistence farmers supply the needs of their families for food and on the other hand, supply agro-allied businesses.

Moreso, vegetables are edible when raw or cooked and serve an important role in human nutrition because it has low fat and carbohydrates but high in vitamins, minerals, and dietary fiber. Nutrition experts advised people to consume more fruit and vegetable, also recommended five or more portions a day. Generally, vegetables are rich sources of minerals- especially calcium and iron, and vitamins A and C. while nearly all classes of vegetables are adequate as antioxidants and dietary fiber [2].
