Xiao Zuobing, Chen Jiaying, Niu Yunwei, Chen Feng
School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China.
School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China.
J Chromatogr B Analyt Technol Biomed Life Sci. 2017 Sep 15;1063:226-234. doi: 10.1016/j.jchromb.2017.07.053. Epub 2017 Aug 5.
The key odorants and the aroma profile of six fennel essential oils from different regions were investigated by using gas chromatography-olfactometry (GC-O), gas chromatography-mass spectrometry (GC-MS) and sensory evaluation. A total of 30 volatile compounds were determined by GC-O with aroma extract dilution analysis (AEDA) and the odor activity values (OAV) of them were calculated. Among these compounds, α-pinene, α-phellandrene, limonene, α-cubebene, β-caryophyllene, estragole, α-humulene, trans-anethole, δ-cadinene and p-anisaldehyde contributed greatly to the aroma of fennel essential oil due to their high flavor dilution (FD) factors and high OAVs. The aroma of fennel essential oils was described by 7 sensory terms as spicy, woody, grassy, floral, musty, sweet and green, and was correlated to the key odorants by partial least squares regression (PLSR). It was showed that spicy, woody, grassy, musty and green attributes were covaried well with aroma compounds. In addition, hierarchical cluster analysis (HCA) was used to find out the similarities among different samples and the result indicated that three main groups were identified.
采用气相色谱 - 嗅觉测定法（GC - O）、气相色谱 - 质谱联用法（GC - MS）和感官评价法，对来自不同地区的六种茴香精油的关键气味成分和香气特征进行了研究。通过气相色谱 - 嗅觉测定法结合香气提取物稀释分析（AEDA）共测定了30种挥发性化合物，并计算了它们的气味活性值（OAV）。在这些化合物中，α - 蒎烯、α - 水芹烯、柠檬烯、α - 荜澄茄烯、β - 石竹烯、草蒿脑、α - 葎草烯、反式茴香脑、δ - 杜松烯和对甲氧基苯甲醛因其高风味稀释（FD）因子和高OAV值，对茴香精油的香气贡献很大。茴香精油的香气用7个感官术语描述为辛辣、木质、青草、花香、霉味、甜味和青香，并通过偏最小二乘回归（PLSR）与关键气味成分相关联。结果表明，辛辣、木质、青草、霉味和青香属性与香气化合物相关性良好。此外，采用层次聚类分析（HCA）来找出不同样品之间的相似性，结果表明可分为三个主要类别。
