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EXPLORERTM微波形態(tài)萃取儀—快速、低溶劑消耗、低溫、高回收率CEM微波萃取的常規(guī)優(yōu)勢1）微波萃取快速、安全、低溶劑消耗、無污染，高回收率，USEPA委托加州EPA對CEM的儀器進(jìn)行*評估后，批準(zhǔn)其作為EPA3546方法*的標(biāo)準(zhǔn)儀器。得到USEPA、FDA、AOAC、CAS、ASTM認(rèn)可。2）不受含水量干擾EPA3545指出樣品含水量將會嚴(yán)重影響ASE萃取回收率，因此要求進(jìn)行嚴(yán)格的干燥前處理。通常采用硫酸鈉或冷凍方法，易導(dǎo)致半揮發(fā)及揮發(fā)性分析物損失。而微波萃取回收率不受...

INTRODUCTIONPeptoidsarepolymersofvarious（N-alkyl）glycines.1Whiletheyaresimilarinstructuretopeptides（Figure1）,peptoidslackapeptidebondmakingthemresistanttoproteolyticactivityinvivo1,2.Thisstabilitymakespeptoidsanattractivepeptidomimetictarge...

INTRODUCTIONTheN-α-Fmoc-α-aminoisobutyricacidderivative（Aib）isadifficultderivativeforcouplinginSPPSduetoitssecondmethylgroupontheα-carbonthatinterfereswiththecouplingreaction（Figure1）.However,itcanbefoundinanumberofbiologicallyrelevantcompo...

INTRODUCTIONTheAKR/Grossmurineleukemiaviruses（MuLV）areC-typeretrovirusesthatcausethedevelopmentofleukemiainAKR（H-2k）mice.1Type-specificantiretroviralcytotoxicT-lymphocyte（CTL）responseshavebeenreportedthatallowdifferentiationbetweeninfection...

INTRODUCTIONInthedevelopmentofantibodiesdirectedagainstspecificpeptidesequences,T-helperepitopesareoftentaggedontothepeptidesequencetoaidinthestimulationoftheimmuneresponse.OnesuchsequenceistheuniversalPanHLADR-bindingepitope（PADRE）.Synthes...

INTRODUCTIONOnechallengefacingpeptidesynthesisisthe-lactamformationofarginine（Figure1）.Theformationof-lactamoccurswhentheinternalnitrogenoftheguanidineattackstheactivatedester,irreversiblyformingthelactamring.Thisreactioniscompetitivewithpe...