目的调查主产区广西、广东、福建及海南杨桃中农药残留状况,评估其农药残留风险。方法对在主产区采集的70份杨桃中105种农药残留进行检测,并对检出的农药残留慢性膳食摄入风险(percent of acceptable daily intake,%ADI)、急性膳食摄入...目的调查主产区广西、广东、福建及海南杨桃中农药残留状况,评估其农药残留风险。方法对在主产区采集的70份杨桃中105种农药残留进行检测,并对检出的农药残留慢性膳食摄入风险(percent of acceptable daily intake,%ADI)、急性膳食摄入风险(percent of acute reference dose,%ARfD)进行评估及风险排序。结果在70份杨桃中共有53份样品检出农药残留,检出率为75.7%;检出的农药共有18种,检出最多的前3位是多菌灵、甲基毒死蜱、啶虫脒,检出率分别为42.8%、17.1%、15.7%;检出农药的%ADI均值为2.03%;%ARfD均值为5.89%,所有农药残留风险值均低于100%,风险很低。杨桃中高风险农药是灭多威、3-羟基克百威、三氯杀螨醇3种。结论主产区杨桃中农药残留慢性膳食摄入风险和急性膳食摄入风险均很低,在杨桃安全生产和消费、质量安全监管中应对高风险农药重点关注,建议加快对杨桃中使用农药的登记和最大残留限量的制修订。展开更多
In order to develop natural antistaling agent for blueberries preservation,the antibacterial activities of 10 kinds of plant essential oils were analyzed by oxford-cup test and tube dilution method,and their inhibitor...In order to develop natural antistaling agent for blueberries preservation,the antibacterial activities of 10 kinds of plant essential oils were analyzed by oxford-cup test and tube dilution method,and their inhibitory abilities to two kinds of representative Gram bacteria which are Escherichia coli and Staphylococcus aureus,and three kinds of harmful fungi in blueberries,involving Alternaria alternata,Penicillium digitatum and Botrytis cinerea,were tested.The results showed that 7 kinds of essential oils can inhibit the three fungi,among which cinnamon oil,clove oil,anise oil and thyme oil have strong fungi static efficacy.Cinnamon oil and thyme oil can effectively inhibit the Gram-positive bacterium(Staphylococcus aureus);cinnamon oil and masson pine oil are strongly inhibitory to Gram-negative bacterium(E.coli).Cinnamon oil has broad-spectrum ability to inhibit fungi,Gram-negative and positive bacteria,with a minimum inhibitory concentration(MIC)ranging from 0.0391 to 0.1560 L/mL.With strong inhibition effects on fungi,cinnamon oil can be used as a compound base oil and mixed with other essential oils to retain the freshness of blueberries,thus achieving better antibacterial and anti-corrosion effects.展开更多
文摘目的调查主产区广西、广东、福建及海南杨桃中农药残留状况,评估其农药残留风险。方法对在主产区采集的70份杨桃中105种农药残留进行检测,并对检出的农药残留慢性膳食摄入风险(percent of acceptable daily intake,%ADI)、急性膳食摄入风险(percent of acute reference dose,%ARfD)进行评估及风险排序。结果在70份杨桃中共有53份样品检出农药残留,检出率为75.7%;检出的农药共有18种,检出最多的前3位是多菌灵、甲基毒死蜱、啶虫脒,检出率分别为42.8%、17.1%、15.7%;检出农药的%ADI均值为2.03%;%ARfD均值为5.89%,所有农药残留风险值均低于100%,风险很低。杨桃中高风险农药是灭多威、3-羟基克百威、三氯杀螨醇3种。结论主产区杨桃中农药残留慢性膳食摄入风险和急性膳食摄入风险均很低,在杨桃安全生产和消费、质量安全监管中应对高风险农药重点关注,建议加快对杨桃中使用农药的登记和最大残留限量的制修订。
基金Supported by Hunan Key Research&Development Project(2016NK2182)National Science and Technology Support Program(2015BAD16B01)~~
文摘In order to develop natural antistaling agent for blueberries preservation,the antibacterial activities of 10 kinds of plant essential oils were analyzed by oxford-cup test and tube dilution method,and their inhibitory abilities to two kinds of representative Gram bacteria which are Escherichia coli and Staphylococcus aureus,and three kinds of harmful fungi in blueberries,involving Alternaria alternata,Penicillium digitatum and Botrytis cinerea,were tested.The results showed that 7 kinds of essential oils can inhibit the three fungi,among which cinnamon oil,clove oil,anise oil and thyme oil have strong fungi static efficacy.Cinnamon oil and thyme oil can effectively inhibit the Gram-positive bacterium(Staphylococcus aureus);cinnamon oil and masson pine oil are strongly inhibitory to Gram-negative bacterium(E.coli).Cinnamon oil has broad-spectrum ability to inhibit fungi,Gram-negative and positive bacteria,with a minimum inhibitory concentration(MIC)ranging from 0.0391 to 0.1560 L/mL.With strong inhibition effects on fungi,cinnamon oil can be used as a compound base oil and mixed with other essential oils to retain the freshness of blueberries,thus achieving better antibacterial and anti-corrosion effects.
