Acta Agriculturae Boreali-Sinica ›› 2025, Vol. 40 ›› Issue (S1): 153-163. doi: 10.7668/hbnxb.20195700

Special Issue: Grape Fruits Cultivation & Physiology

• Tillage & Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Effects of Different Harvest Dates on the Accumulation of Phenolic Compounds in Beime Wine Grapes and Resulting Wines

XU Wendi, SHAN Shouming, ZHANG Wenwen, LI Ping   

  1. School of Enology and Horticulture,Ningxia University,Yinchuan 750021,China
  • Received:2024-12-16 Published:2025-12-29

Abstract:

In order to investigate the differences of phenolic substances in wine grape berries and wines at different harvesting periods,three maturity levels (23,25 and 27 °Brix) were set as harvesting periods for Beimei wine grape berries in the eastern foothills of the Helan Mountains in Ningxia,and the basic physical and chemical indexes and phenolic substance contents of berries and wines were analyzed by transcriptome sequencing.Physicochemical indexes and phenolic content were measured,and transcriptome sequencing analysis was performed on the fruit at 23 and 25 °Brix.The results showed that the 100-grape weight and titratable acid content of Beimei fruits decreased with the prolongation of the harvesting period,while the total soluble sugar,tannin,anthocyanin,total phenol content and sugar-acid ratio showed an increasing trend,with significant differences in different periods.The alcoholic content,total phenol and tannin content of wines also increased with the prolongation of harvest period,and the titratable acid,volatile acid and anthocyanin content varied with different periods.Acid,volatile acid and anthocyanin content did not change much;the phenolic acid and flavonol content of grape berries and wine showed an overall increasing trend with the prolongation of the harvest period,and the flavanol content fluctuated and changed,which was the main phenolics,reaching the maximum value at T2 and W2.Transcriptomic analysis revealed 1 316 DEGs,including 598 upregulated and 718 downregulated genes.KEGG pathway analysis revealed that the differentially expressed genes (DEGs) were primarily enriched in four pathways associated with phenolic compound biosynthesis,which are flavonoid biosynthesis,phenylalanine metabolism,phenylpropanoid biosynthesis and flavonoid and flavonol biosynthesis,among which PAL and CHS were the main differentially expressed genes.In summary,as the harvest period extends,the quality of grape fruit and wine improves,the content of phenolic compounds increases,and the expression of PAL and CHS was up-regulated,providing a theoretical basis and foundation for the selection of raw materials for brewing different types of wine and the mining of genes related to phenolic synthesis.

Key words: Wine grapes, Monomeric phenols, Transcriptome analysis, Wine, Quality

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Cite this article

XU Wendi, SHAN Shouming, ZHANG Wenwen, LI Ping. Effects of Different Harvest Dates on the Accumulation of Phenolic Compounds in Beime Wine Grapes and Resulting Wines[J]. Acta Agriculturae Boreali-Sinica, 2025, 40(S1): 153-163. doi: 10.7668/hbnxb.20195700.

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