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Character impact odorants of the apple cultivars Elstar and Cox Orange

机译:苹果品种Elstar和Cox Orange的特征性香气

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Extracts obtained from Elstar and Cox-Orange apples (Malus var. domestica Borkh.) were screened for potent odorants by aroma extract dilution analysis (AEDA). (E)-beta-Damascenone (I), (E)-beta-damascone (II), hexanal (III), (Z)-3-hexenal (IV), (Z)-2-nonenal (V), linalool (VI), butyl acetate (VII), 2-methylbutyl acetate (VIII) and hexyl acetate (IX) were identified in Elstar and 1, III-V, ethyl butanoate (X), ethyl 2-methylbutanoate (XI), 1-octen-3-one (XII), (E)-2-octenal (XIII), methional (XIV), (E)-2-nonenal (XV), eugenol (XVI) and wine lactone (XVII) in Cox Orange. The release of odorants by the cultivars was analysed by gas chromatography-olfactometry of headspace samples. Esters X and XI showed the highest odour activities in the air above Elstar apples and ester X, acetaldehyde (XVIII), 2-methylbutanol (XIX) and ethyl methylpropanoate (XX) in that of Cox Orange. Preparation of a homogenate changed the headspace composition of potent odorants. Hexyl acetate (IX) became the key odorant of Elstar and aldehydes III and IV those of Cox Orange. Quantification and calculation of odour activity values indicated I, IV, V, VII, VIII and IX as the character impact odorants of the fruit flesh of the two cultivars. Elstar contained more I, V, VII and IX and Cox Orange more IV than the other cultivar. The concentrations of VIII were similar.
机译:通过香气提取物稀释分析(AEDA)筛选了从Elstar和Cox-Orange苹果(Malus var。domestica Borkh。)获得的提取物中的强力香精。 (E)-β-大马烯酮(I),(E)-β-大马酮(II),己醛(III),(Z)-3-己醛(IV),(Z)-2-壬烯(V),芳樟醇(VI)在Elstar中鉴定出乙酸丁酯(VII),乙酸2-甲基丁酯(VIII)和乙酸己酯(IX),III-V,丁酸乙酯(X),2-甲基丁酸乙酯(XI),1-辛橙中的辛烯-3-一(XII),(E)-2-辛烯(XIII),蛋氨酸(XIV),(E)-2-壬烯(XV),丁子香酚(XVI)和葡萄酒内酯(XVII)。通过顶空样品的气相色谱-嗅觉法分析了栽培品种释放的气味。酯X和XI在空气中的气味最高,超过Elstar苹果和酯X,乙醛(XVIII),2-甲基丁醇(XIX)和甲基丙酸乙酯(XX),是考克斯橙中的最高。匀浆的制备改变了强力气味剂的顶空组成。乙酸己酯(IX)成为Elstar和考克斯橙的醛III和IV的主要气味。气味活性值的定量和计算表明,I,IV,V,VII,VIII和IX是这两个品种果肉的特征性香气。 Elstar的I,V,VII和IX含量更高,而Cox Orange的IV含量高于其他品种。 VIII的浓度是相似的。

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