美泰科学家认定番石榴营养价值
美国农业部网10月1日消息，美国农业研究局和泰国的科学家已将番石榴添加到如蓝莓、黑豆和花椰菜等抗氧化剂丰富的植物名单中。抗氧化剂抑制自由基，可以很好的预防由于自由基氧化损伤人体细胞引发的各种慢性疾病。他们发现，番石榴的抗氧化剂含量排名仅低于蓝莓，高于杨桃、荔枝、芒果和木瓜的抗氧化剂含量。（国际情报研究室译）
【原文】
U.S.-ThaiScientificEffortsPegGuava'sNutritionalValue
ByAlfredoFlores
October1,2007
AcooperativestudybyAgriculturalResearchService(ARS)andThaiscientistshasshownthatguavafruitishighinantioxidants—addingittothelistofotherantioxidant-richfoodssuchasblueberries,blackbeansandbroccoli.
Becausetropicalfruitsaren'tusuallygrownincoolerU.S.climates,littleinformationabouttheirnutritionalvalue—especiallyofthatofthemore"exotic"species—hasbeendeveloped.ButSouthFloridagrowersarebeginningtoproduceguava,carambola,pitaya,mameysapote,sapodilla,lychee,longan,mangoandpapayatomeetrisingconsumerdemandforunusualfruits.
AttheARSU.S.CitrusandSubtropicalProductsResearchLaboratoryinWinterHaven,Fla.,scientistshavebeenusingstandardmethodstoanalyzetropicalfruitsfromSouthFloridaforcomponentsthatcouldbebeneficialtohumanhealth.
LeadingtheresearchisARShorticulturistElizabethBaldwin,withARSchemistsJohnMantheyandKevinGoodner,alongwithcooperatingscientistsattheUniversityofFlorida'sCitrusResearchandEducationCenterinLakeAlfred,andatSiamUniversity-BangkokandChiangMaiUniversity,bothinThailand.TheThairesearchersaretestingSoutheastAsianvariationsthatarenotnativetoFlorida.TheTropicalFruitGrowersofSouthFloridaprovidedagranttomaketheresearchpossible.
FruitsandvegetablesplayasignificantroleinthehumandietbecausetheyprovideanoptimalmixofantioxidantssuchasvitaminsCandE,polyphenols,carotenoidsandcomplexcarbohydrates.Antioxidantsareplantchemicalsthathavethepowertoneutralizefreeradicals,toxiccompoundsgeneratedinsidethehumanbodyandalsofoundinpollutantslikecigarettesmoke.Gettingridofthesedamagingcompoundscanhelpimprovehumanhealth,sincefreeradicalscauseoxidativedamagetohumancellsthatcantriggervariouschronicdiseases.
Inthestudy,guava'santioxidantcontentrankedjustbelowthatofblueberries,whichisNo.1inantioxidantactivity.Otherfruitsrankingsurprisinglyhighwerecarambola,lychee,mangoandpapaya.
【原文】
U.S.-ThaiScientificEffortsPegGuava'sNutritionalValue
ByAlfredoFlores
October1,2007
AcooperativestudybyAgriculturalResearchService(ARS)andThaiscientistshasshownthatguavafruitishighinantioxidants—addingittothelistofotherantioxidant-richfoodssuchasblueberries,blackbeansandbroccoli.
Becausetropicalfruitsaren'tusuallygrownincoolerU.S.climates,littleinformationabouttheirnutritionalvalue—especiallyofthatofthemore"exotic"species—hasbeendeveloped.ButSouthFloridagrowersarebeginningtoproduceguava,carambola,pitaya,mameysapote,sapodilla,lychee,longan,mangoandpapayatomeetrisingconsumerdemandforunusualfruits.
AttheARSU.S.CitrusandSubtropicalProductsResearchLaboratoryinWinterHaven,Fla.,scientistshavebeenusingstandardmethodstoanalyzetropicalfruitsfromSouthFloridaforcomponentsthatcouldbebeneficialtohumanhealth.
LeadingtheresearchisARShorticulturistElizabethBaldwin,withARSchemistsJohnMantheyandKevinGoodner,alongwithcooperatingscientistsattheUniversityofFlorida'sCitrusResearchandEducationCenterinLakeAlfred,andatSiamUniversity-BangkokandChiangMaiUniversity,bothinThailand.TheThairesearchersaretestingSoutheastAsianvariationsthatarenotnativetoFlorida.TheTropicalFruitGrowersofSouthFloridaprovidedagranttomaketheresearchpossible.
FruitsandvegetablesplayasignificantroleinthehumandietbecausetheyprovideanoptimalmixofantioxidantssuchasvitaminsCandE,polyphenols,carotenoidsandcomplexcarbohydrates.Antioxidantsareplantchemicalsthathavethepowertoneutralizefreeradicals,toxiccompoundsgeneratedinsidethehumanbodyandalsofoundinpollutantslikecigarettesmoke.Gettingridofthesedamagingcompoundscanhelpimprovehumanhealth,sincefreeradicalscauseoxidativedamagetohumancellsthatcantriggervariouschronicdiseases.
Inthestudy,guava'santioxidantcontentrankedjustbelowthatofblueberries,whichisNo.1inantioxidantactivity.Otherfruitsrankingsurprisinglyhighwerecarambola,lychee,mangoandpapaya.
