Characterization of the key aroma compounds in Yunnan goat milk cake using a sensory‐directed flavor analysis

己酸 芳香 化学 风味 食品科学 三硫化二甲酯 己酸乙酯 气味 丁酸乙酯 甜蜜 感官分析 脱氢乙酸 味道 嗅觉测定 色谱法 有机化学 硫黄 二甲基二硫化物
作者
Huaixiang Tian,Xuefeng Sun,Haiyan Yu,Lianzhong Ai,Chen Chen
出处
期刊:Journal of Food Science [Wiley]
卷期号:85 (11): 3981-3997 被引量:16
标识
DOI:10.1111/1750-3841.15490
摘要

Abstract To identify the key aroma compounds in Yunnan goat milk cake, seven varieties of milk cake samples were subjected to sensory analysis and gas chromatography‐mass spectrometry (GC‐MS), gas chromatography‐olfactometry (GC‐O), aroma recombination, omission, and addition tests. The GC‐MS results revealed 53 compounds with aroma characteristics in all the samples. A further comparison of odor activity values and aroma intensities (AI) revealed 25 of these compounds as the initial key aroma compounds. The contributions of these key aroma compounds to the sensory attributes were determined using a partial least squares regression. Of these compounds, 2‐heptanone and 2‐nonanone were closely related to the “milky” and “cheesy” attributes and were highly abundant in the samples from Kunming. Fatty acids, including butanoic acid, hexanoic acid, octanoic acid, and decanoic acid, were the most abundant compounds detected in the milk cakes. These fatty acids were closely related to the “rancid” and “animalic (goat)” attributes and were largely detected in the samples from Dali Dengchuan and Dali Xiaguan. Sensory‐directed aroma recombination, omission, and addition tests further validated the important contributions of ethyl butyrate, benzaldehyde, 3‐methyl‐1‐butanol, 2‐heptanone, hexanoic acid, and octanoic acid to the overall sensory properties. Moreover, ethyl butyrate, benzaldehyde, and 2‐heptanone, when added, had evident inhibitory or masking effects on the AI of “sour,” “rancid,” and “animalic (goat)” attributes. Practical Application Goat milk cake is a popular acid‐curd cheese in Yunnan, China, however, our limited knowledge to its key aroma compounds restricts its development and industrial production. In this study, a sensory‐directed flavor analysis was used to characterized the key aroma compounds of Yunnan goat milk cake, which will help to enhance our understanding on the flavor profile of Yunnan goat milk cake and provide a reference for optimizing the flavor feature and organoleptic quality of this fresh goat cheese.
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