qiagen69514食品基因组DNA提取试剂盒DNeasy mericon Food Kit
生产过程中,食物容易受到热、高压和pH值变化的影响,这些会导致DNA降解和片段化。DNeasy mericon Food Kit中的优化试剂专为回收短的DNA片段(100 bp)而设计,确保高度片段化的DNA可被有效分离,并在PCR反应中进行扩增。凭借这些优势,DNeasy mericon Food Kit是*个可广泛应用于从强抑制性、多脂、酸性、有很高或很低DNA含量的加工食物中纯化核酸的试剂盒,结果可靠,而且可得到纯化效果。
qiagen69514食品基因组DNA提取试剂盒DNeasy mericon Food Kit
mericon Sample Preparation Kits适用于从多种初始材料中提纯高品质核酸,如经富集的培养基(mericon DNA Bacteria和 Bacteria Plus Kits)及多种食物原材料与成品(DNeasy mericon Food Kit)等。这些复杂食物样本的纯化产物中所含PCR抑制剂的水平达到zui低。纯化获得的DNA适用于各种下游应用,如应用mericon PCR Assays Kits进行real-time PCR成分鉴定、病原体检测;或GMO DNA定量检测。
该试剂盒采用改良的CTAB纯化细胞内核酸。CTAB是非离子去污剂,广泛用于从多种类型的组织样本中高效提纯细胞内核酸。与盐浓度相关,CTAB可能与细胞内核酸结合(低盐浓度);也可与细胞内的抑制剂结合,如多糖、蛋白质和植物代谢产物(高盐浓度,如在Food Lysis Buffer中)。
这种提纯方法的步骤少于传统CTAB 操作方法,应用DNeasy mericon Food Kit可在2.5个小时内可处理多达30个样本。
经优化的方案,采用CTAB和蛋白酶K初步消化紧密组织,然后同时沉淀蛋白质和其他细胞内和来自于食品本身的抑制剂。
离心后抑制剂沉淀下来,而提纯的DNA保留在溶液中。然后进行lv仿抽提,所有剩余的、未沉淀CTAB结合蛋白、CTAB结合杂质或 CTAB 结合多糖都将与其他脂溶性抑制剂一起被抽提入lv仿层。水层中含有DNA和极少的抑制剂,将进一步处理。在水相中加入结合缓冲液(调节结合条件),将其上样到QIAquick Spin Column。纯化后得到的DNA可即用于下游的mericon real-time PCR分析。
For extraction of high-quality DNA from microbial enrichment cultures and raw or processed foods
- Modified CTAB procedure ensures faster sample processing
- Efficient isolation of even fragmented DNA from processed foods
- Fast and efficient lysis of Gram-negative and Gram-positive bacteria
- No carryover of PCR inhibitors from complex food matrices
mericon Sample Preparation Kits are designed to enable the extraction of high-quality nucleic acids from a wide range of starting materials, such as pathogen enrichment cultures (mericon DNA Bacteria and Bacteria Plus Kits) and a variety of raw and processed foods (DNeasy mericon Food Kit). The carryover of PCR inhibitors from these complex food matrices is minimized. The isolated, pure DNA is suitable for downstream applications, such as real-time PCR ingredient authentication, pathogen detection, or GMO DNA detection and quantification using mericon PCR Assay Kits.