Changes of the Total Phenols and Flavonoids in Apricot Peel and Pulp of Different Cultivars During Fruit Development

Two apricot cultivars(‘Qingmisha’ and ‘Luotuohuang’) differed in fruit development days and fruit color were used as experimental materials of this experiment.Changes of total phenols,total flavonoids and anthocyanin in peel and pulp of two apricot cultivars were measured from about 14days after full bloom until harvest,in order to explore the changes mechanism of the total phenols and flavonoids in apricot fruits during fruit development.The results showed that the contents of total phenols and total flavonoids increased at early stage of rapid growth both in peel and pulp,and then generally decreased during the pit hardening,while the values in commercial mature fruits were slightly increase again.The anthocyanin levels were gradually increased with the fruit development in two cultivars.The amount of total phenols and total flavonoids in fruit of ‘ Qingmisha ’ was higher than that in ‘ Luotuohuang ’.For any of the three bioactive compounds,the amount in peel was markedly higher than pulp.It was concluded that the polyphenols and flavonoids levels in apricot fruits were correlated with the cultivar,fruit development stage and different tissues.