Título:	Targeted metabolomics reveals the storage potential of grape juice produced using different vine training systems and rootstocks.
Autoria:	HERNANDES, K. C. FÉLIX, L. D. SILVEIRA, R. D. RYBKA, A. C. P. BIASOTO, A. C. T. ZINI, C. A. WELKE, J. E.
Afiliação:	KAROLINA CARDOSO HERNANDES, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; LILIANE DÁRIA FÉLIX, UNIVERSIDADE FEDERAL DE SERGIPE; RAFAELA DIOGO SILVEIRA, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; ANA CECILIA POLONI RYBKA, CPATSA; ALINE TELLES BIASOTO MARQUES, CNPMA; CLÁUDIA ALCARAZ ZINI, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; JULIANE ELISA WELKE, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL.
Ano de publicação:	2026
Referência:	European Food Research and Technology, v. 252, 208, 2026.
Conteúdo:	Training system and rootstock influence grape quality by regulating vegetative vigor, canopy structure, and metabolite biosynthesis, which may impact the juice shelf life. This study applied a targeted metabolomics approach to evaluate how combinations of training system and rootstock affect the physicochemical, phenolic, antioxidant, and volatile profiles of ‘BRS Magna’ grape juices during 24 months of storage. The metabolomic evaluation was conducted using LC-DAD- qTOF-MS for phenolic profiling, HS-SPME-GC-qMS for volatile characterization, and spectrophotometric assays to deter- mine antioxidant activity and color. All juices met regulatory standards of total acidity (61.77–75.31 mEq L−1), volatile acidity (1.13 and 1.75 mEq L−1) and soluble solids (16.3–19.2 °Brix) during 24 months of storage. Total acidity and phenolic compounds, especially anthocyanins, declined during storage, causing orange color shifts and reduced antioxidant activity. These changes were observed for all combinations of training systems and rootstocks. However, the espalier × IAC 572 combination resulted in juices with the highest phenolic content, which contributed to greater antioxidant activ- ity and enhanced color stability even after 24 months of storage. These juices also contained higher levels of esters and furaneol, enhancing pleasant aromas compared to other combinations. The enhanced performance of this combination was attributed to greater sunlight exposure and vegetative vigor, which stimulate the biosynthesis of metabolites linked to stability. This study demonstrated that the storage potential of grape juices can be optimized through agronomic practices that promote the accumulation of quality- and stability-related metabolites
Thesagro:	Uva Composto Fenólico Antocianina Aroma
NAL Thesaurus:	Rootstocks Grapes Grape juice Phenolic compounds Anthocyanins Volatile compounds Shelf life
Palavras-chave:	Suco de uva Compostos voláteis Vida útil Viticultura tropical BRS Magna
Digital Object Identifier:	https://doi.org/10.1007/s00217-026-05125-5
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPATSA)