Chemical and sensory analysis of juices and cuts of ‘Bordô’ and ‘Niágara Rosada’ grapes

• Published in: Revista Brasileira de Fruticultura Vol. 41; no. 1
• Main Authors: Frölech, Dianini Brum, Assis, Adriane Marinho de, Nadal, Michele Carla, Mello, Letícia Leal de, Oliveira, Bruna Andressa dos Santos, Schuch, Márcia Wulff
• Format: Journal Article
• Language: English
• Published: Sociedade Brasileira de Fruticultura 2019
• Subjects: grapevine; processing; Vitis spp
• ISSN: 0100-2945; 1806-9967; 1806-9967
• DOI: 10.1590/0100-29452019141

Abstract the aim of this study was to evaluate the chemical characteristics and sensory acceptance of juices and cuts of ‘Bordô’ and ‘Niágara Rosada’ grapes. The experimental design was in a one-factor scheme, with five levels. Treatments were: T1 – ‘Bordô’ (100%); T2 – ‘Bordô’ (70%) + ‘Niágara Rosada’ (30%); T3 – ‘Bordô’ (50%) + ‘Niágara Rosada’ (50%); T4 – ‘Bordô’ (30%) + ‘Niágara Rosada’ (70%); T5 – ‘Niágara Rosada’ (100%). Chemical analyses were: content of soluble solids, pH and titratable acidity, and sensory analyses were: color, aroma, flavor, body and global acceptance. For the soluble solids content, the highest averages were verified in T1, T2 and T3 treatments. As for pH, the highest value was recorded in T3, T4 and T5 treatments, while the highest titratable acidity was recorded in T4 and T5 treatments. In the sensory analysis, in juice with the highest percentage of ‘Bordô’ grape (T1 and T2) or with the same proportion of ‘Bordô’ and ‘Niágara Rosada’ (T3), the highest mean acceptance values were found. Thus, it could be concluded that the use of 100% ‘Bordô’ grape and ‘Bordô’ juice cut with up to 50% ‘Niágara Rosada’ are presented as alternatives for juice production.
Resumo o objetivo do trabalho foi avaliar as características químicas e a aceitação sensorial de sucos e cortes de uvas ‘Bordô’ e ‘Niágara Rosada’. O delineamento experimental foi constituído em esquema unifatorial, com cinco níveis. Os tratamentos foram: T1 – ‘Bordô’ (100%); T2 - ‘Bordô’ (70%) + ‘Niágara Rosada’(30%); T3- ‘Bordô’ (50%) + ‘Niágara Rosada’ (50%); T4 - ‘Bordô’ (30%) + ‘Niágara Rosada’ (70%); T5 - ‘Niágara Rosada’ (100%). As análises químicas foram: teor de sólidos solúveis, pH e acidez titulável; e as sensoriais foram: cor, aroma, sabor, corpo e aceitação global. Para os sólidos solúveis as maiores médias foram verificadas nos tratamentos T1, T2 e T3. Quanto ao pH, o maior valor foi registrado nos tratamentos T3,T4 e T5, enquanto no T4 e T5 foi obtida a maior acidez titulável. Na analise sensorial, de modo geral, no suco com maior porcentagem de uva ‘Bordô’ (T1 e T2) ou com a mesma proporção de ‘Bordô’ e ‘Niágara Rosada’ (T3) foram verificadas as maiores médias de aceitação. Assim, conclui-se que o uso de 100% de uva ‘Bordô’ e o corte de suco de ‘Bordô’ com até 50% de ‘Niágara Rosada’ apresentam-se como alternativas para a elaboração de suco.