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首页> 外文期刊>Acta Horticulturae >Discrimination of 'Isabella', 'Concord', 'Ives' and 'White Niagara' grape juices by their free amino acid composition.
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Discrimination of 'Isabella', 'Concord', 'Ives' and 'White Niagara' grape juices by their free amino acid composition.

机译：通过其游离氨基酸组成歧视“伊莎贝拉”，“Concord”，'Ives'和“白色尼亚加拉”葡萄汁。

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In 2006 Brazil commercialized 15.64 million L of natural grape juice and 23,328 t of the concentrated type, which means that over 130 thousand t of grapes were crushed for this purpose. In this way, the country is one of the most important grape juice producers of the world. The main cultivars used by the grape juice industry are primarily 'Isabella' and 'Concord', and secondly 'Ives', but there is a small market for the 'White Niagara' grape juice. Aiming to characterize and to discriminate these grape juices, analyses of 16 free amino acids were performed using an amino acid autoanalyser. Data were submitted to the principal component analysis. Results show that most variables had strong correlation with the factors 1, 2 and 3. Indeed, they represented, respectively, 46.37, 36.39 and 17.24% of the total variation. Projection of the variables on the factor-plane 1x2 shows that 'Isabella' grape juice was better characterized by lysine, arginine, aspartate, histidine and glutamate; 'Concord', by alpha -alanine, alpha -alanine/arginine and alpha -alanine/proline ratios; 'White Niagara', by phenylalanine, tyrosine, isoleucine, leucine, proline, valine, glycine and proline/arginine ratio. Projection of the variables on the factor-plane 1x3 shows that 'Ives' is characterized by methionine and threonine. However, serine was not well represented in any grape juice and factor-plane. This work is an important contribution to the characterization of the Brazilian grape juice made from American/hybrid cultivars, which can be discriminated by its free amino acid composition.
机译：2006年巴西商业化了1564万升天然葡萄汁和23,328吨的浓缩型，这意味着为此目的粉碎了超过13万吨葡萄。通过这种方式，该国是世界上最重要的葡萄汁生产商之一。葡萄汁行业使用的主要品种主要是“Isabella”和'Concord'，其次是“Ives”，但“白色尼亚加拉”葡萄汁有一个小市场。旨在表征和鉴别这些葡萄汁，使用氨基酸自动αα进行16种游离氨基酸的分析。数据提交给主成分分析。结果表明，大多数变量与1,2和3的因素具有强烈的相关性，实际上，它们分别为总变异的46.37,36.39和17.24％。因子平面1x2上的变量的投影显示，“伊莎贝拉”葡萄汁以赖氨酸，精氨酸，天冬氨酸，组氨酸和谷氨酸种子更好地表征; 'Concord'，通过α-alanine，α-alanine /精氨酸和α-alanine /脯氨酸比例; “白色尼亚加拉”，苯丙氨酸，酪氨酸，异亮氨酸，亮氨酸，脯氨酸，缬氨酸，甘氨酸和脯氨酸/精氨酸比。因子平面1x3上的变量的投影显示“I度”的特征在于蛋氨酸和苏氨酸。然而，丝氨酸在任何葡萄汁和因子平面中都不好。这项工作是对由美国/杂种品种制造的巴西葡萄汁表征的重要贡献，其可以通过其游离氨基酸组成来区分。

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