Application of Pulsed Electric Field Technology in Apple Juice Processing

Ne of the most widely known groups of natural metabolites are plants' derived phenolic compounds, which secondary metabolites of plants. Fundamentally, these secondary metabolites act to provide protection for the plants in the event of biological and environmental stresses, and so are usually produced in response to pathogenic confrontation or exposure to high-energy radiations. As chief sources of phenolic phytochemicals, the regular consumption of fruits and vegetables has long been recognized and many epidemiological investigations support a strong correlation between these chief sources intake and incidence of degenerative disorders including cardiovascular diseases and different forms of cancers. It is believed that fruits and vegetables by virtue of their high content of antioxidants provide protective effect for critical biomolecules such as DNA, protein and lipids from oxidation due to the production of free radicals during both normal metabolism and stress conditions.