DeterminationofMelamineResiduesinCatfishTissue
triple quadrupole liquid chromatography tandem mass spectrometry method is presented for the quantitative determination and confirmation of melamine residues in catfish. Catfish tissue was extracted with 50:50 acetonitrile:water and 1 N hydrochloric acid and cleaned-up using Oasis® MCX solid phase extraction cartridges. Extracts were analyzed by Thermo TSQ LC-MS-MS with HILIC chromatography and electrospray ion......阅读全文
赛默飞世尔科技三聚氰胺检测方法汇总
一、液相色谱——串联质谱法测定三聚氰胺 美国国家食品安全与技术中心建立了测定食品中的三聚氰胺的新方法 TSQ Quantum系统在三聚氰胺的分析上得到了应得的认可。我们可以很容易的在含有10ppb三聚氰胺的鲶鱼的分析中，获得超过3800的信噪比。 >>下载全文 二、ELISA方法检测三聚氰胺
美国环保署豁免三聚氰胺甲醛缩聚树脂的最大残留限量
据美国联邦公报消息称，2019年6月20日，美国环保署发布条例，豁免三聚氰胺甲醛缩聚树脂（Melamine Formaldehyde Polycondensate Resin）用作农药化学制剂中的惰性成分时的最大残留限量。 本次豁免申请由BASF Corporation按照美国《联邦食品、药
三聚氰胺事件及其对全球食品供应链的冲击
近期关于亚洲国家发生的三聚氰胺污染婴幼儿配方奶粉的新闻报道，又一次引起了全球对食品供应链安全的关注。其实，2007年3月相类似的事件在美国宠物食品中也曾发生过，世界各国政府管理机构都在研究科学的质控方法检测三聚氰胺和其代谢物，以其保证人类食品和动物饲料的安全性。 有关婴幼儿配方奶粉、饼干和糖果中检
Bradford－–－Protein－Determination
Bradford – Protein DeterminationIntroductionA rapid and accurate method for the estimation of protein concentration. The technique is simpler, faster
Lowry－–－Protein－Determination
Lowry – Protein Determination(From Protein Protocols on CD-ROM Humana Press, 1998 - Section 1-2 The Lowry Method for Protein Quantitation Jakob H. Wat
Determination－of－IC50
DescriptionIn vitro whole cell assay by [H3] Hypoxanthine uptake assay Procedure[H3] Hypoxanthine uptake assay (with respect to red blood cell culture
COMPARISION－OF－DIFFERENT－PROTEIN－DETERMINATION－METHODS
COMPARISION OF DIFFERENT PROTEIN DETERMINATION METHODSCompanyMethodDetection RangeApplications -CompatibilityAssay protocolPrecautions-InterferencesA
TISSUE－CULTURE－ON－COVERSLIPS
I. Purpose:A. Skin tissue may be used for chromosome analysis in special cases when the results from peripheral blood are inconclusive, e.g. suspected
PCR－from－Tissue
collect piece of tissue (e.g., pieces of a leaf or flower) in Eppendorf tube containing 40 ml 0.25 N NaOHput in boiling H2 O for 30 sec (optimum may n
Tissue－Harvest－Protocol
TISSUES TO BE PROCURED(minimally and preferably within 5-8 hours after death):1. Brain2. Liver3. Muscle4. Skin5: Others as the specific case dictatesP
Tissue－Culture－Media
We use two different kinds of media. Most cells are grown in DMEM. A few lymphoid cell lines are grown in RPMI. Cells grown in DMEM must be grown in a
PCR－from－Tissue
1.collect piece of tissue (e.g., pieces of a leaf or flower) in Eppendorf tube containing 40 ml 0.25 N NaOH 2.put in boiling H2O for 30 sec (optimum
PCR－from－Tissue
collect piece of tissue (e.g., pieces of a leaf or flower) in Eppendorf tube containing 40 ml 0.25 N NaOHput in boiling H2O for 30 sec (optimum may ne
Quantitative－Determination－of－Peptides－by－Sulfhydryl－(SH)－Groups
Quantitative Determination of Peptides by Sulfhydryl (-SH) GroupsAuthor: David Van Horn, Greg BulajSource: Contributed by David Van Horn, Dept. of Che
UV－Absorbance－(280－nm)－－–－Protein－Determination
UV Absorbance (280 nm) – Protein Determination Simple and quick method to accurately quantitate total protein in purified material or approximately q
Tissue－preparation－protocol－for－ChIP
实验概要This protocol describes how chromatin is prepared from tissue, which can subsequently be used for chromatin immunoprecipitation (ChIP). It is re
DNA－Extraction－from－Tissue
实验概要DNA extraction from tissue.主要试剂Extraction buffer100 mM Tris-HCl (pH 8.0) 100 mM EDTA (pH 8.0) 100 mM Na-Phosphate (pH 8.0) 1.5 M NaCl1% CTAB
Stock－solutions－for－tissue－culture
The kitchen makes Tris, TD, Tryp/TD, PBS, and VE.Tris is a fairly complex, Tris-buffered physiological saline solution. It is used to wash cells and i
Dissociation－of－spleen－and－hemopoietic－tissue
You need to buy glass slides with frosted, sandblasted ends (Fisher Scientific, Catalog N. 12-552). Frosting by painting (e.g.Superfrost) should not
PCR－from－Plant－Tissue
1.protocol(1)collect piece of tissue (e.g., pieces of a leaf or flower) in Eppendorf tube containing 40 ml 0.25 N NaOH(2)put in boiling H2Ofor 30 sec
Cell－and－tissue－lysis－hub
This page should point you to the many different general and lab-specific protocols describing tissue and cell lysis and serve as forum for comparison
PCR－from－Plant－Tissue
PCR from Tissue Reference: Klimyuk et.al., 1993, Plant J. 3:493-494 Last updated: 1/27/00 By: Kay Schneitz collect piece of tissue (e.g., piec
DNA－Immunoprecipitation－for－the－Determination－of－DNABinding－Specificity
Andrea J. Gossett and Jason D. Lieb1Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA1Corresponding autho
Determination－and－Detection－of－Reactive－Oxygen－Species－(ROS),－Lipid－...
Reactive oxygen species or intermediates are formed by the incomplete reduction of oxygen. Organisms living in aerobic environment generate variou
美国FDA发布婴儿配方乳制品中三聚氰胺的检测方法
应用Thermo Scientific TSQ Quantum LC-MS/MS 美国FDA于日前在Laboratory Information Bulletin No.4421上发布婴儿配方乳制品中三聚氰胺的检测方法 （Determination of Melamine and Cyanuric
The－Determination－of－Proteinprotein－Interactions－by－the－Matingbased－...
Dynamic and reversible protein–protein interactions have a pivotal function in all living cells. For instance, protein–protein interactions are in
TISSUE－CULTURE－STOCK－SOLUTIONS－AND－MEDIA
MS MEDIUM FOR ARABIDOPSISTo 990 ml H2O add: Sucrose ........... 10.0 g MOPS .............. 0.5 g Agar .............. 8.0 g Adjust pH to 5.7
HP－Tissue－DNA－Maxi－Protocol
实验概要The E.Z.N.A.® HP Tissue DNA Maxi Kit is designed for efficient recovery of genomic DNA up to 60 kb in size from up to 2 grams of tissue samples.
HP－Tissue－DNA－Midi－Protocol
实验概要The E.Z.N.A.® HP Tissue DNA Midi Kit is designed for efficient recovery of genomic DNA up to 60 kb in size from up to 500mg of tissue samples.
Histopathological－Approach－to－Rat－Liver－Tissue
ProcedureAfter deep ether anesthesia, dissect the rat’s liver (Wistar albino rats, 200 – 250 g) by cutting on the ventral side.Fix 2 – 3 mm. of the li