近红外判别结合COI序列基因分析鉴定地龙物种基源
2020-08-07吴怡青赵崇军张文婷赵霞顾念念孟雪丹林瑞超邹迪新
吴怡青 赵崇军 张文婷 赵霞 顾念念 孟雪丹 林瑞超 邹迪新



摘要 目的:建立地龙药材的真伪鉴别方法,为地龙药材优质用药提供新方法。方法:采用COI序列进行分子生物学层面的基因序列分析,近红外二级光谱判别建模分析进行光谱学层面的分析,两者共同鉴定地龙药材的真伪。结果:COI序列分析能够鉴别地龙种属,明确药材的基源,近红外建模分析结果与COI序列分析结果一致。结论:近红外判别与COI基因分析结合能够简便,全面的控制地龙药材真实性,明确药材基源。
关键词 地龙;COI序列;近红外建模;真伪鉴别;物种基源
Abstract Objective:To establish the authenticity identification method of Dilong medicinal materials,and to provide new methods for high-quality medication of Dilong medicinal materials.Methods:The COI sequence was used to analyze the gene sequence at the molecular biology level,and the near-infrared secondary spectrum discrimination modeling analysis was used to analyze the spectroscopy level.The 2 jointly identified the authenticity of the Dilong medicinal materials.Results:COI sequence analysis can identify the species of Dilong,identify the source of the medicinal materials,and the results of near infrared modeling analysis are consistent with the results of COI sequence analysis.Conclusion:Mutual verification shows that the combination of the 2 can be simple and comprehensively control the authenticity of Dilong medicinal materials,clarify the source of medicinal materials.
Keywords Dilong; COI sequence; Near infrared modeling; Authenticity identificat-ion; Species origin
中圖分类号:R282.5文献标识码:Adoi:10.3969/j.issn.1673-7202.2020.13.006
地龙为常见的平肝熄风类中药,《中华人民共和国药典》2015版规定:“蚓科动物参环毛蚓Pheretima aspergillum(E.Perrier)的干燥体称之为广地龙,通俗环毛蚓Pheretima vulgaris Chen、威廉环毛蚓Pheretima guillelmi(Michaelsen)、栉盲环毛蚓Pheretima pectinifera Michaelsen的干燥体称为沪地龙”。动物药分子生物学鉴定的研究对象一般选择线粒体基因[1],其可作为遗传信息的载体,用于研究动物种群起源以及进化。COI序列具有“变异少,易扩增,且不易发生碱基缺失和插入”的特性,国际上,一般将其作为研究动物类样品的通用序列。本实验基于COI引物稳定的特点,探究其对于地龙种属鉴别的优势。建立地龙物种鉴别的分子生物学方法。同时基于近红外光谱可应用广泛,可用于含氢基团的检测,同时具有简便、易操作的特性,根据其二维光谱分析结果建立的模型可用于药材真伪初步鉴别,可提高中药研究人员的工作效率,采用2种方法对地龙药材的真伪进行鉴别,互相验证,共同保证药材的基源真实性。……
