Analysis of barking Pingou hazelnut volatiles by HS-SPME-GC-MS
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摘要: 香气物质是榛子炒食过程中质量评价的重要指标。本文采用顶空固相微萃取(HS-SPME)和气相色谱质谱联用(GC-MS)技术对生榛子和不同微波焙烤工艺条件下获得的榛子样品中挥发性成分进行差异性分析。结果显示,生平欧榛子检测出挥发性成分22种,低火(140 W,4 min)处理的平欧榛子检测出29种,中低火(210 W,4 min)处理的平欧榛子检测出30种,高火(350 W,4 min)处理的平欧榛子检测出47种;不同焙烤条件下的榛子样品中均检测到了吡嗪类挥发性成分,并且随着焙烤功率的增加吡嗪类和醛酮类挥发性成分的种类和含量均有明显的增加,而生榛子中不含有吡嗪类挥发性成分;通过OAV值筛选出11种香气成分,通过主成分分析出第一主成分和第二主成分的特征值为8.080和2.887,其累积贡献率达73.456%,99.705%,能够较好的代表原始数据所反应的信息,焙烤榛子的主要香气来源于吡嗪类、醛酮类物质。
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关键词:
- 榛子 /
- 挥发性成分 /
- 顶空固相微萃取 /
- 气相色谱-质谱联用(GC-MS) /
- 主成分分析
Abstract: Aroma components are the important indexes for evaluation of the quality in the fry process of hazelnut.Headspace solid phase microextraction( HS- SPME) and gas chromatography mass spectrometry( GC- MS) were used on the hazelnut to analysis raw and different microwave baking process conditions. Results showed that by the test analysis of raw hazelnut 22 kinds of the volatile components were defected. There were 29 kinds of the hazelnut volatile components defected in low heat( 140 W,4 min) processing,30 kinds of the volatile components were detected in low fire( 210 W,4 min) processing hazelnut and 47 kinds of the volatile components were detected in high fire( 350 W,4 min) processing hazelnut.Aldehyde,ketones and pyrazine were detected under the condition of different baking hazelnut which were significantly increased during processing,and there were no pyrazine volatile components in raw hazelnut.By OAV value of 11 kinds of aroma components.Through principal component analysised of the first principal component and the second principal component characteristic value was 8.080 and2.887,the cumulative contribution rate of 73.456%,99.705%,can better represent the original data information reaction by,baked hazelnut's main source of aroma is pyrazine,aldehyde,ketone substance. -
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