【摘要】 目的:利用DNA条形码鉴定技术,快速、准确地鉴别不同种类及产地的商品燕窝,揭示其不同基源的物种差异。方法:采用试剂盒提取基因组DNA,利用PCR技术扩增Cytb序列,应用DNAStar软件进行校对拼接,采用MEGA 6.0软件对32份样品的条形码序列进行比对,构建邻接树(Neighbor-Joining tree,NJ),并进行遗传距离分析。结果:实验所用的Cytb条形码可鉴别出燕窝的物种及亚种;收集的32个商品燕窝中,23个官燕窝的基源为爪哇金丝燕Aerodramus fuciphagus,8个官燕窝的基源为其亚种淡腰金丝燕Aerodramus fuciphagus germani,而1个毛燕窝的基源为大金丝燕Aerodramus maximus或其亚种Aerodramus maximus lowi。结论:不同来源的商品燕窝基源差异较大,利用Cytb条形码可快速、准确鉴别出燕窝基源。更多还原

【Abstract】 This study was aimed to quickly and accurately identify different origins and categories of commodity edible bird’s nest(EBN) using DNA barcoding technique, in order to reveal its genetic differences. The total genomic DNA was isolated from the EBN samples. And Cytb gene sequences were amplified and sequenced by PCR. Then, 32 sequences were aligned and analyzed with DNAStar and MEGA 6.0 software. NJ phylogenetic tree was constructed. The nearest distance was calculated. The results showed that the original species of 32 samples of EBN were identified. Aerodramus fuciphagus was the genetic origin of 23 white nest samples. And Aerodramus fuciphagus germani was the genetic origin of the other 8 samples. The origin of black nest sample was Aerodramus maximus or Aerodramus maximus lowi. It was concluded that the genetic origin of different EBN categories was variant. The identification of EBN’s origin species with Cytb sequence was quick and accurate.更多还原