Fruits are among the essential elements of human nutrition. Although the first definition that comes to mind when talking about fruit is “edible products of trees”, in fact, fruit is botanically described as “the organ that is formed by the development of the ovary in plants after the fertilization of the flower and carries the seeds”. In other words, we call fruit the organ that flowering plants form in different ways from the ovary and that develops with or without seeds. The importance of fruits in human nutrition is mainly due to the large/primary molecules such as carbohydrates, proteins, and fats they contain, the vitamins and inorganic minerals that people must take from outside, and the polyphenols, fatty acids, and organic acids, which are called secondary metabolites that have many important functions although they are small in quantity.