Malowicki Sarah M M, Martin Robert, Qian Michael C
Department of Food Science and Technology, Oregon State University, Corvallis, OR 97330, USA.
J Agric Food Chem. 2008 Jun 11;56(11):4128-33. doi: 10.1021/jf073489p. Epub 2008 May 13.
Twenty-nine volatile compounds in 'Chilliwack', 'Tulameen', 'Willamette', 'Yellow Meeker', and 'Meeker' raspberries were quantified using stir bar sorptive extraction (SBSE) paired with gas chromatography-mass spectrometry (GC-MS). Good correlation coefficients were obtained with most aroma-active compounds in raspberry, with quantification limits of 1 microg/kg. However, poor recoveries were observed for raspberry ketone and zingerone. Quantitative data showed that volatile concentrations varied for different cultivars. Large variations for alpha-ionone, beta-ionone, geraniol, linalool, and ( Z)-3-hexenol were observed in different raspberry cultivars. In addition, the volatile compositions in 'Meeker' raspberry grown at different locations also varied. The chiral isomeric ratios of raspberry ketone, alpha-ionone, alpha-pinene, linalool, terpinen-4-ol, delta-octalactone, delta-decalactone, and 6-methyl-5-hepten-2-ol were studied using a CyclosilB column. alpha-Ionone, alpha-pinene, delta-octalactone, and delta-decalactone had strong chiral isomeric preference, with more than 96% for one isomeric form. Much weaker chiral isomeric preference was observed for terpinen-4-ol, while linalool was almost a racemic mixture. Both growing locations and cultivars affect the isomeric ratio of linalool with a range of 37-51% for ( R)-linalool.
采用搅拌棒吸附萃取(SBSE)结合气相色谱 - 质谱联用(GC - MS)技术对“奇利瓦克”、“图拉梅恩”、“威拉米特”、“黄米克”和“米克”树莓中的29种挥发性化合物进行了定量分析。与树莓中大多数香气活性化合物的相关系数良好,定量限为1微克/千克。然而,树莓酮和姜辣素的回收率较低。定量数据表明,不同品种的挥发性成分浓度有所不同。在不同的树莓品种中,α - 紫罗兰酮、β - 紫罗兰酮、香叶醇、芳樟醇和(Z)-3 - 己烯醇存在较大差异。此外,在不同地点种植的“米克”树莓的挥发性成分也有所不同。使用CyclosilB柱研究了树莓酮、α - 紫罗兰酮、α - 蒎烯、芳樟醇、萜品醇 - 4、δ - 辛内酯、δ - 癸内酯和6 - 甲基 - 5 - 庚烯 - 2 - 醇的手性异构体比例。α - 紫罗兰酮、α - 蒎烯、δ - 辛内酯和δ - 癸内酯具有强烈的手性异构体偏好,其中一种异构体形式的比例超过96%。萜品醇 - 4的手性异构体偏好较弱,而芳樟醇几乎是外消旋混合物。种植地点和品种都会影响芳樟醇的异构体比例,(R)-芳樟醇的比例范围为37% - 51%。