Physiological role of the ripening enzymes (invertase and cellulase) in the date palm fruits (Phoenix dactylifera L.) (Review article)

Abstract

Due to the importance of enzymes and their physiological role in the fruit ripening process, the most important causes responsible for the role of invertase and cellulase in the ripening process were identified in this study, invertase, which is an enzyme widely known as the enzyme that stimulates the hydrolysis of sucrose into reduced sugars to improve the quality of fruits. The freshness is not related to the moisture content of the fruits only, but also with the effectiveness of a number of hydrolysis enzymes accompanying the final ripening stages, such as invertase, and it is believed that it plays a major role in regulating sugar content to contribute to all aspects of plant growth. It is known that there are many enzymes that affect the softness of the fruit, As for the cellulase enzyme known to be active in the softness of the cell wall of cells, it in this way helps the softness and ripening of fruits, which is one of the important characteristics that determine the quality of dates and the extent of their consumption. Researches differed in identifying the main reasons that lead to ripening of fruits according to the variety, stage and chemical composition, so the real reasons for the role of enzymes in the ripening phase were not known. In this research, some information on the physiological causes responsible for the differences in the pattern of enzyme changes was identified invertase and cellulase in the different varieties of the date palm fruits and understanding the ripeness of the fruit, the importance of enzymes and their role in the ripening of the various varieties of date palm was highlighted, and there is still a lot that has not been discovered about this process.