样品前处理对电子鼻评价中药气味结果的影响
首发时间:2013-07-30
摘要:目的:探讨粉碎后的中药材放置时间对电子鼻评价中药材气味的影响。方法:选择不同产地,不同批次的生、炒枳实共计12批,比较放置时间对电子鼻区分辨识能力的影响,并比较电子鼻对放置不同时间的26种药材的气味识别聚类能力。结果:中药材粉碎后立即进行电子鼻检测,气味变化大,重现性差,放置7天后进行电子鼻测定,结果稳定性和重复性均好,但放置超过7天后,测定区分度差。结论:中药材粉碎后的放置时间影响电子鼻的测定结果,进行样品测定前应对放置时间进行方法学的建立。
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The effect of sample preparation on the odor evaluation of electronic noses in traditional Chinese medicine
Abstract:[Objective] To compare the different effects of the storage time after crushing on odor evaluation of electronic nose in traditional Chinese medicine. [Methods] Choosing a total of 12 batches about different producing regions, different batches of raw or roasted aurantii frutus immaturus, the influences of different storage times after crushing on the electronic nose detection were compared. And the effect of the storage time after crushing on recognition clustering ability of electronic nose was also investigated on 26 kinds of traditional herbs. [Result] The results of detection of electronic nose on Chinese herbal medicine pieces immediately after crushing were poor reproducibility and the herbs smells changed greatly. The stability and repeatability were good after placing 7 days, but the discrimination of the small differentiation was bed by putting more than 7 days. [Conclusion] The storage time after crushing of Chinese herbal medicine affect the determination results of electronic nose. The methodology about storage time should be established, before the samples are determined by electronic nose.
Keywords: Electronic nose traditional Chinese medicine crushing odor scatter reproducibility
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