基于相关性分析的山楂炮制过程气味变化机制研究

Preliminary study of odor change mechanism in Crataegi Fructus stir-fried process based on correlation analysis

该文研究山楂炮制过程气味变化与5-羟甲基糠醛(5-HMF)的相关性,探讨气味变化机制。取净山楂炮制成山楂炭过程中的不同样品,采用电子鼻获取其气味传感器响应值,运用统计质量控制法(SQC)客观描述山楂炮制过程气味的变化;高效液相色谱法(HPLC)测定样品中5-HMF的含量;采用相关性分析法分析二者相关性。实验结果表明,建立的SQC模型显示出山楂炒制过程气味变化呈一定的规律性;5-HMF的含量先升后降;相关性分析显示山楂炮制过程气味变化与5-HMF呈显著性相关(P<0.05)。山楂炮制过程气味变化与5-HMF含量变化有关,糖降解反应及美拉德反应可能是山楂炮制过程气味变化的作用机制之一。

In order to investigate the mechanism, the correlation between the odor change in Crataegi Fructus stir-fried process and 5-HMF were studied. Required samples were retrieved from Crataegi Fructus stir-fried process. Statistical quality control （SQC） was used to analyze the response values acquired by the electronic nose. At the same time, the content of 5-HMF was detected by high performance liquid chromatography （HPLC）. Correlation analysis was used to analyze the relationship between the above two. Experimental results showed that SQC model established by response values of all samples could show the change law of odor in Crataegi Fructus stir-fried process and changes of 5-HMF content was dropped after the first increase. Correlation analysis showed that the odor change in Crataegi Fructus stir-fried process and 5-HMF were significantly correlated （ P 〈 0. 05 ）. Sugar degradation reaction and the Maillard reaction may be one of the mechanisms of the odor change in Crataegi Fructus stir-fried process.