Carob or ceratonia siliqua is a typical mediterranean forest and fruit tree that has considerable ecological and socio-economic importance. It is frequently used in our culinary and medical traditions to combat cholesterol, acute diarrhea and digestive disorders. Our work was based on the study of the polyphenolic extract of Ceratonia siliqua pods on fruit oxidation and maturation. Our results show that the total polyphenols (PPT) carob tree pod play a role in apple, banana and lemon maturation. It is then suggested that carob PPT has a major role in accelerating fruit oxidation that play a role in fruit maturation. We suggest that our product can be used to replace chemicals that are used in the acceleration of fruit maturation.