Polyphenoloxidase(catecholoxidases)assay
Polyphenoloxidase(catecholoxidases)assayBrowningofthecutsurfaceofsomefruitsandvegetablesisduethepresenceofagroupofenzymescalledpolyphenoloxidases.Theseenzymesarereleasedbythebrokencellsandtheycatalysethereactionbetweencolourlessmoleculescalledpolyphenolsandmolecularoxygen.Thisreactioncreatescoloured...
药品天地;专业药学;实验技术;生化实验;酶学实验低剂量的硫化氢可以提高生物燃料产量
硫化氢是一种具有刺鼻性气味的致命毒气。这种物质牵连着几次大规模物种灭绝。但是美国华盛顿大学的研究人员发现,硫化氢在低剂量时可以促进植物生长,这可以解决全球粮食供应的激增并保证生物燃料产品的储备充足。研...
医药经济;生物技术;生物能源RelationofdiettocardiovasculardiseaseriskfactorsinsubjectswithcardiovasculardiseaseinAustraliaandNewZealand:analysisoftheLong-TermInterv
...heLIPIDtrial,1077tookpartinthebaselinesurveyofeatinghabitsthatusedadetailedfood-frequencyquestionnaire(FFQ).Furthersurveyswereconductedamongthissubcohort1yand4ylater;therespectiveresponserateswere89%and84%,sothataprogressivedietaryhistorywasobtainedover4yin849subjects,approximatelyone-halfofwhomwere...
医源资料库;在线期刊;美国临床营养学杂志;2005年81卷第6期Adaptationinironabsorption:ironsupplementationreducesnonheme-ironbutnotheme-ironabsorptionfromfood
...individuals,eventhosewithlowironstores,hadreducednonheme-ironabsorptionfromfoodinresponsetoironsupplementation.Despitethispartialadaptation,ironstoresweregreaterafterironsupplementationthanafterplaceboandthisdifferencewassustained,exceptinindividualswiththelowestironstores.KeyWords:Ironsupplementati...
医源资料库;在线期刊;美国临床营养学杂志;2000年72卷第4期DietarypatternsareassociatedwithbiochemicalmarkersofinflammationandendothelialactivationintheMulti-EthnicStudyofAtherosclerosis(MESA)
...rnsandmarkersofinflammationandendothelialactivation.Design:Atbaseline,diet(food-frequencyquestionnaire)andconcentrationsofC-reactiveprotein(CRP),interleukin6(IL-6),homocysteine,solubleintercellularadhesionmolecule-1(sICAM-1),andsolubleEselectinwereassessedin5089nondiabeticparticipantsintheMulti-Ethn...
医源资料库;在线期刊;美国临床营养学杂志;2006年83卷第6期Povertyandobesity:theroleofenergydensityandenergycosts
...relationbetweenenergydensity(MJ/kg)andenergycost($/MJ),suchthatenergy-densefoodscomposedofrefinedgrains,addedsugars,orfatsmayrepresentthelowest-costoptiontotheconsumer.Third,thehighenergydensityandpalatabilityofsweetsandfatsareassociatedwithhigherenergyintakes,atleastinclinicalandlaboratorystudies.F...
医源资料库;在线期刊;美国临床营养学杂志;2004年79卷第1期HouseholdfoodsecurityandnutritionalstatusofHispanicchildreninthefifthgrade
...Alto,CA94304-1825.E-mail:donna.matheson{at}stanford.edu.ABSTRACTBackground:Foodinsecurityisacriticalvariableforunderstandingthenutritionalstatusoflow-incomepopulations.However,limitedresearchisavailableontherelationbetweenhouseholdfoodinsecurityandchildren‘snutritionalstatus.Objective:Ourobjective...
医源资料库;在线期刊;美国临床营养学杂志;2002年76卷第1期Relationbetweenfoodreinforcementanddopaminegenotypesanditseffectonfoodintakeinsmokers
...treet,Buffalo,NY14214-3000.E-mail:lhenet{at}buffalo.edu.ABSTRACTBackground:Foodreinforcementanddopaminergicactivitymayinfluencefoodconsumption,butresearchonwhethertheyinteracthasnotbeenperformed.Objective:Weassessedtheeffectsoffoodreinforcementandtheinteractionoffoodreinforcementwiththedopaminetrans...
医源资料库;在线期刊;美国临床营养学杂志;2004年80卷第1期MeasuringdietaryacculturationinJapaneseAmericanswiththeuseofconfirmatoryfactoranalysisoffood-frequencydata
...couldbemeasuredbyconfirmatoryfactoranalysis(CFA)byusingaculturallysensitivefood-frequencyquestionnaire(FFQ).Weexaminedtheutilityoftheestimatedfactorscoresbytestingforassociationswithdiabetesand2riskfactorsfordiabetes—bodymassindex(BMI;inkg/m2)andC-reactiveprotein(CRP).Design:Byusingcross-secti...
医源资料库;在线期刊;美国临床营养学杂志;2007年86卷第2期Doeatinghabitsdifferaccordingtoalcoholconsumption?ResultsofastudyoftheFrenchcohortoftheEuropeanProspectiveInvestigationintoCancerandNu
...25and1950.Dietarydatawereobtainedbetween1993and1995byusingself-administeredfood-frequencyquestionnaires.About73000questionnaireswereanalyzed,andwomenwereplacedinto7categoriesofalcoholconsumption.Results:Afteradjustmentforenergyderivedfromalcohol,increasingalcoholconsumptionwasassociatedwithahigherto...
医源资料库;在线期刊;美国临床营养学杂志;2001年74卷第3期