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1、Articlepubs.acs.org/JAFCCharacterizationofChemicalCompositionofBeePolleninChina?,??,????KaiYang,DanWu,XingqianYe,*DonghongLiu,JianchuChen,andPeilongSun?DepartmentofFoodScienceandNutrition,ZhejiangUniversity,Hangzhou310029,People’sRepublicofChina?CollegeofBiologicalandEnvironmentalEngineering,Zh
2、ejiangUniversityofTechnology,Hangzhou310032,People’sRepublicofChinaABSTRACT:Beepollenhasbeenpraisedforitsgoodnutritionandtherapeuticvalues.Chinaisthelargestproducerintheworld.Twelvecommonvarietiesofmono?oralbeepollencollectedfromChina’smainproducingregionswereselectedfornutritionalcompositionan
3、alysis,includingproximatecontents,dietary?bers,aminoaciddistribution,fattyacidcomposition,andmineralelements.Theproximatecompositionsmostlymetthespeci?cationsregulatingpollenloadqualityofChina.Prolineandglutamicacidswerefoundtobethepredominantaminoacidsintheformofbothtotalaminoandfreeaminoacids
4、.Lysinewastherelativelimitingaminoacid.Thepercentageoftotalessentialaminoacids(TEAA)tototalaminoacids(TAA)reachedthenutritionrecommendationoftheFoodandAgriculturalOrganization(FAO).Themajorfattyacids,presentedasmeanvalues,wereC18:3(25.1%),C16:0(19.6%),C18:1(17.3%),C18:2(8.78%),C22:0(4.07%),andC
5、18:0(2.96%)acids.TheproportionsofC18:3weregenerallyhigherthanthoseofC18:2,andtheratiooftotalunsaturatedfattyacids(TUS)tototalsaturatedfattyacids(TS)was>1.0,exceptforNelumbonuciferaGaertn.pollenforthecharacteristicabsenceofC18:3acids.Highlevelsofbene?cialelementssuchasK,Ca,Mg,Zn,Fe,Mn.andCuwereo
6、bservedinpollensamples.ThecontentsofdetrimentaltraceelementsofCd,Pb,andHgwereprimarilylowerornotdetected.However,moreattentionshouldbepaidtoalargeamountofAl,withaconcentrationof>100mg/kgDWinmostsamples.Thereweresomesigni?cantdi?erencesbetweensamples.Onthewhole,theChinesebeepollenwasevaluatedasa
7、goodcomplementtodiet.KEYWORDS:Chinesebeepollen,chemicalcompositionanalysis,nutrition,aminoacids,fattyacids,minerals■INTRODUCTIONWithitsextensiveterritory,diversi?ed?ora,favorableclimatethroughouttheyear,andabout300,000beekeepersfr
