To investigate the effects of different harvesting periods on the quality and metabolites of ‘Luntai White Apricot' fruit, the quality of ‘Luntaibaixing' apricot fruits at different harvesting periods (S1-S6) was measured, and the widely targeted metabolomics were used to study the metabolites in the fruits at different harvesting periods.Results showed that as the fruit matured, the single fruit weight, soluble solids, total soluble sugar, color index, and pH value of the fruit continued to increase, while the fruit hardness and titratable total acid showed a gradually decreasing trend.The content of vitamin C showed a trend of first increasing and then decreasing, reaching its maximum value at S3.867 metabolites were identified in the fruits of ‘Luntaibaixing' apricot at six different harvest periods, including 12 major categories, including flavonoids, lipids, lignans and coumarins, alkaloids, terpenes, tannins, others (including saccharides, alcohols and vitamins), phenolic acids, amino acids and derivatives, organic acids, nucleotides and derivatives, and steroids, of which the number of flavonoids was the largest, 191, accounting for 22%.Through the analysis of metabolites with large differences, sugar, organic acids, flavonoids, amino acids and derivatives may be the root cause of the difference in taste and flavor of ‘Luntaibaixing' apricot fruit in different harvest periods.The research results indicate that S3 and S4 are the optimal harvesting periods for ‘Luntaibaixing' apricots.
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