Fuente: PubMed "wine" Food Res Int. 2026 Apr 30;230:118464. doi: 10.1016/j.foodres.2026.118464. Epub 2026 Feb 2.ABSTRACTTerroir-driven variation in polyphenolic compounds plays a central role in defining wine style. This study investigated how mesoclimatic differences in the Xixia and Yongning sub-regions of the Eastern Foothills of the Helan Mountains (Ningxia, China) influence the phenolic profiles of 'Cabernet Sauvignon' and 'Marselan'. Comparative analyzes revealed pronounced phenolic contrasts between Xixia and Yongning. The TF parcel in Yongning, with gravelly soils and high thermal accumulation, promoted flavonoid biosynthesis, resulting in wines with deeper color and stronger astringency. 'Cabernet Sauvignon' maintained a stable phenolic composition across sites, while 'Marselan' exhibited greater phenotypic plasticity. Correlation analysis revealed a negative relationship between effective accumulated temperature and anthocyanin levels in 'Cabernet Sauvignon', contrasting with a positive correlation between temperature and flavonols in 'Marselan'. These results clarify the cultivar-specific metabolic responses to terroir and support terroir-driven strategies for viticultural zoning and wine quality optimization in emerging regions.PMID:41794517 | DOI:10.1016/j.foodres.2026.118464