抗黄曲霉毒素B1蛋黄抗体的制备及其性质的研究

将黄曲霉素Ｂ１－牛血清白蛋白（ＡＦＢ１Ｏ－ＢＳＡ）妆物免疫注射４只（Ａ、Ｂ、Ｃ、Ｄ）产蛋鸡。研究了抗ＡＦＢ１蛋黄抗体的产生进程，除鸡Ｂ外，其它３只鸡从第一次注射搞后的第９０天开始有较明显的抗体产生，第１３５天达到高峰，从第１６５天开始下降。在抗体产生高峰期，蛋黄抗体Ａ、Ｃ、Ｄ的间接ＥＬＩＳＡ效价分别为１：８０００、１：６０００、１：６０００。以蛋黄抗体Ａ为材料，研究了抗体的特异性，结果表明，该抗体     

抗A型产气荚膜梭菌α毒素单克隆抗体杂交瘤细胞系的建立与中和效应

用提取的Ａ型产气荚膜梭菌α毒素包涵体免疫ＢＡＬＢ／ｃ小鼠，取小鼠脾细胞与ＳＰ２／０骨髓瘤细胞进行融合和克隆化，经ＥＬＩＳＡ筛选，共获得７株稳定分泌单克隆抗体（ＭｃＡｂ）的杂交瘤细胞株，分别命名为１Ａ８、１Ｃ３、１Ｄ５、１Ｄ８、１Ｆ１、１Ｈ１和２Ｅ３。经鉴定，７株ＭｃＡｂ的Ｉｇ亚类有ＩｇＧ１（１Ｄ８）、ＩｇＧ３（１Ａ８、１Ｃ３和２Ｅ３）和ＩｇＭ（１Ｄ５、１Ｆ１和１Ｈ１）。细胞培养上清和腹水抗体效价分别为：１∶５１２～１∶１０２４和１∶１０６～１∶１０８。尤为重要的是，２Ｅ３杂交瘤细胞株分泌的ＭｃＡｂ不仅能够中和α毒素的磷脂酶Ｃ活性和溶血活性，而且能够对致死性腹腔感染小鼠产生良好的被动保护作用     

安徽省肾综合征出血热沙鼠肾细胞Ⅰ型灭活疫苗免疫性及其流行病学效果的考核

采用ＥＬＩＳＡ、ＩＦＡ检测特异性抗体,ＭＣＰＥＮＴ检测中和抗体和ＨＩ,进行血清学分型。结果：选择姬鼠型疫区,接种沙鼠肾细胞Ⅰ型灭活出血热疫苗安全性较好。免疫后４２天ＨＦＲＳ．Ｖ．ＩｇＧ抗体阳性率为９６４３％,ＧＭＴ＝３５１８,１８０天有明显下降,加强免疫两周后阳性率达１００％,而且１２００天仍有３６３６％人群存在１∶１０（＋）抗体;ＭＣＰＥＮＴ抗体较ＩＦＡ抗体阳性率低,但疫苗免疫人群具有特异性回忆反应。中期流行病学防病效果接种组发病率为２３５／１０万,对照组为４２９３／１０万,保护率９４５３％。     

干扰素治疗丙型肝炎疗效相关因素分析

目的：探讨预测干扰素治疗慢性丙型肝炎（ＣＨＣ）疗效的临床上适用、简便、易行的指标。方法：对采用干扰素（ＩＦＮα－１ｂ）治疗３２例ＣＨＣ临床资料进行观察,包括治疗前后肝功能（ＡＬＴ、ＳＢ、ＧＧＴ）、抗－ＨＣＶＯＤ水平、ＨＣＶ基因型、ＨＣＶＲＮＡ、ＳＩＬ－２Ｒ、β２－ＭＧ等,治疗结束时有效者为肝功能复常同时ＨＣＶＲＮＡ阴转,其余反应模式均为无效者。结果：ＨＣＶ基因型为Ⅲ型患者疗效（５／１０）明显高于Ⅱ型（２／１９）（Ｐ＜０．０５）,有效者治疗前血清抗—ＨＣＶＯＤ明显低于无效者（Ｐ＜０．０５）,治疗后有效者β２－ＭＧ升高水平（３．４５±１．０８）ｍｇ／Ｌ明显高于无效者（１．３３±０．９５）ｍｇ／Ｌ（Ｐ＜０．０５）,而两者治疗前ＡＬＴ、ＳＢ、ＧＧＴ、ＩｇＭ、β２－ＭＧ患者的年龄无明显差别（Ｐ＞０．０５）。结论：感染ＨＣＶ基因型,治疗前抗—ＨＣＶＯＤ水平及治疗后β２－ＭＧ变化对预测ＩＦＮ治疗ＣＨＣ疗效有一定参考价值。     

库尔特MD10血球计数仪改MD18的方法

１软件库尔特ＭＤ１０（Ｅ版本）在一张高密小盘上载有：（１）ＤＯＳ５．０系统文件５个：ＩＯ．ＳＹＳ、ＭＳ－ＤＯＳ．ＳＹＳ、ＣＯＭＭＡＮＤ．ＣＯＭ、ＨＩＭＥＭ．ＳＹＳ、ＲＡＭ－ＤＲＩＶＥＲ·ＳＹＳ。其中前三个文件是ＤＯＳ的核心，完成操作系统的基本功能；ＨＩＭＥＭ．ＳＹＳ可以提供上位内存，ＲＡＭＤＲＩＶＥＲ．ＳＹＳ可用建立一个虚拟盘。（２）系统配置、自动批处理文件各１个：ＣＯＮ－ＦＩＧ．ＳＹＳ、ＡＵＴＯＥＸＥＣ．ＢＡＴ。前者为程序的运行提供运行环境，包括用ＨＩＭＥＭ．ＳＹＳ开辟上位内存和用ＲＡＭＤＲＩ…     

腰/臀比值与糖、脂代谢相关性研究

测定２２６例ＮＩＤＤＭ、３８９例ＩＧＴ患者体质指数（ＢＭＩ）及腰／臀比值（ＷＨＲ），并与１５３例糖耐量正常对照组作了比较。结果显示：ＮＩＤＤＭ组、ＩＧＴ组ＢＭＩ、ＷＨＲ均显著高于对照组（Ｐ＜０．０１）；ＮＩＤＤＭ组ＷＨＲ显著高于ＩＧＴ组（Ｐ＜０．０１），两组间ＢＭＩ无显著性差异（Ｐ＞０．０５）。另外，ＮＩＤＤＭ组、ＩＧＴ组的ＦＩｎｓ、２ｈＢＧ、２ｈＩｎｓ、ＴＧ、ＳＢＰ、ＤＢＰ及高血压患病率均显著高于正常组（Ｐ＜０．０１）；ＮＩＤＤＭ组ＦＢＧ、ＦＩｎｓ、２ｈＢＧ、ＴＧ及高血压患病率显著高于ＩＧＴ组（Ｐ＜０．０１），而ＩＤ１、２ｈＩｎｓ、ＩＤ２显著低于ＩＧＴ组（Ｐ＜０．０１）。ＮＩＤＤＭ组Ｃｈ明显高于对照组（Ｐ＜０．０５），而ＩＧＴ组Ｃｈ与对照组相比无显著性差异（Ｐ＞０．０５）。相关分析结果示ＷＨＲ与ＩＤ１、ＩＤ２、Ｃｈ、ＴＧ、ＳＢＰ、ＤＢＰ，均呈正相关。提示ＷＨＲ是体脂分布对糖、脂及胰岛素代谢影响较重要的指标。     

茶油延缓动脉粥样硬化形成及其机理的探讨

本文报告了富含单不饱和脂肪酸（ＭＵＦＡ）的茶油对动脉粥样硬化（ＡＳ）形成及脂质代谢、血栓素Ｂ２（ＴＸＢ２）和脂质过氧化物（ＬＰＯ）的影响。结果提示，茶油具有明显的延缓ＡＳ形成的作用；其机理可能是茶油中富含的ＭＵＦＡ纳入组织后，通过降低血脂、肝脂，升高ＨＤＬ一Ｃ／ＴＣ比值，抑制ＴＸＢ２释放，增加机体抗氧化酶ＳＯＤ和ＧＳＨ一Ｐｘ的活性，降低血浆、肝脏ＬＰＯ生成等环节而发挥作用。因此，我国特产的茶油对防治冠心病（ＣＨＤ）有益，值得开发利用。     

β-胡萝卜素和核黄素对大鼠脂质过氧化的影响

目的：进一步探讨亚硝胺通过脂质过氧化而致癌的可能途径,以及研究β－胡萝卜素（β－Ｃ）和核黄素（ＶＢ２）通过抑制脂质过氧化反应而影响亚硝胺致癌的可能途径。方法：将５０只二级ＳＤ雄性大鼠随机分成５组。实验组在每日灌胃二甲基亚硝胺（ＮＤＭＮ）１．７５ｍｇ／ｋｇ的基础上,每日分别给予β－Ｃ２５ｍｇ／ｋｇ和／或ＶＢ２１８ｍｇ／ｋｇ补充,实验期为２８天。实验结束时,收集血液,摘取肝脏和肾脏,测红细胞和肝肾匀浆ＳＯＤ活性,全血ＧＳＨ－Ｐｘ活性,血清和肝肾匀浆ＭＤＡ含量,血清ＲＯＯＨ以及全血Ｈｂ含量。结果：１．ＮＤＭＮ可使ＳＯＤ和ＧＳＨ－Ｐｘ活性下降（Ｐ＜０．０５）,ＭＤＡ和ＲＯＯＨ产生增多（Ｐ＜０．０５）。２．添加β－Ｃ后,ＳＯＤ和ＧＳＨ－Ｐｘ活性有明显提高（Ｐ＜０．０５）,ＭＤＡ和ＲＯＯＨ的含量明显降低（Ｐ＜０．０５）。３．添加ＶＢ２后,肝ＳＯＤ和全血ＧＳＨ－Ｐｘ活性均有明显提高（Ｐ＜０．０５）,但ＭＤＡ和ＲＯＯＨ的含量没有差异（Ｐ＞０．０５）。４．同时补充β－Ｃ和ＶＢ２后,各项指标的变化与单纯β－Ｃ组基本一致。结论：脂质过氧化也是亚硝胺致癌的途径之一;一定剂量的β－Ｃ可对抗ＮＤＭＮ引发的脂质过氧化;核黄素对提高抗氧化?     

抗着丝点蛋白Ｂ抗体阳性的原发性干燥 综合征的实验室特征分析

摘要：目的　分析原发性干燥综合征（ｐｒｉｍａｒｙＳｊｇｒｅｎ′ｓｓｙｎｄｒｏｍｅ,ｐＳＳ） 抗着丝点蛋白Ｂ （ＣＥＮＰＢ）, ＣＥＮＰＢ抗体阳性与抗ＣＥＮＰＢ抗体阴性的ｐＳＳ病例实验室检查特点,为ｐＳＳ的诊治提供更好的帮助。方 法　选取２０１３—２０１７ 年在北京大学口腔医院就诊的２９８ 例ｐＳＳ 患者的临床和实验室检查资料,分为抗 ＣＥＮＰＢ抗体阳性组（８７例）和抗ＣＥＮＰＢ抗体阴性组（２１１例） 进行回顾性分析。结果　抗ＣＥＮＰＢ 抗 体阳性的ｐＳＳ患者发病年龄大于阴性组（６４．２０±１０．６７）岁狏狊（５５．３５±１３．７２）岁,差异有统计学意义（狋 ＝５．９６４,犘＜０．０１）。血清ＡＬＰ （９５．３２±５６．７８）Ｕ／Ｌ狏狊（７４．１６±２２．７８）Ｕ／Ｌ、ＧＧＴ （７４．０５±１５７．３３） Ｕ／Ｌ狏狊（２７．４３±４０．９８）Ｕ／Ｌ 和ＩｇＭ （２．０４±１．８５）ｇ／Ｌ狏狊（１．５０±１．１７）ｇ／Ｌ 水平高于阴性组,ＡＭＡ Ｍ２的检出率较高１６．０９％ 狏狊８．０６％, 差异均有统计学意义（ＡＬＰ：狋＝３．２６２,犘＜０．０５;ＧＧＴ：狋＝ ２．６４５,犘＜０．０５;ＩｇＭ：狋＝２．５１５,犘＜０．０５;ＡＭＡ Ｍ２：χ ２＝４．２７,犘＜０．０５）。结论　抗ＣＥＮＰＢ抗体阳 性的ｐＳＳ患者实验室检查特点与抗ＣＥＮＰＢ抗体阴性患者有差异,部分患者肝脏受累明显,可能是ｐＳＳ中 的一个类型。 关键词：抗着丝点蛋白Ｂ;干燥综合征;ＡＭＡ Ｍ２;自身抗体;实验室检测 中图分类号：Ｒ４４６．６　　文献标识码：Ａ　　文章编号：１００９ ６６３９ （２０１８）０３ ０２３４ ０４     

用计算机辅助精子分析系统测定TCDD对大鼠精子运动能力的影响

利用计算机辅助的精子分析系统（ＣＡＳＡ）研究了２,３,７,８—四氯二苯－Ｐ－二口恶口英（ＴＣＤＤ）对大鼠精子运动能力的影响。给２１天龄幼鼠腹腔注射ＴＣＤＤ０．１、１．０和５．０μｇ／ｋｇ,对照组注射等量体积的溶媒。在性成熟后（９０天）,用扩散法收集附睾尾精子,测定其运行速度（ＶＣＬ、ＶＳＬ、ＶＡＰ）、运动方式（ＳＴＲ、ＬＩＮ、ＢＣＦ、ＡＬＨ、ＭＡＤ等）及活动精子的比率（Ｍｏｔ％）。结果表明,ＴＣＤＤ１．０μｇ／ｋｇ组,精子的运动速度明显低于对照组（ＶＣＬＰ＜０．０５;ＶＡＰ、ＶＳＬ、ＢＣＦＰ＜０．０１）,０．５μｇ／ｋｇ时精子的运动速度、及前向性和直线性运动性能均明显降低（Ｐ＜０．０１）,活动精子的比率也明显低于对照组（Ｐ＜０．０１）。本研究结果为ＴＣＤＤ的男性生殖毒理学研究,以及ＣＡＳＡ在男性生殖毒理学研究中的应用提供了进一步参考依据     

烟台市售食品黄曲霉毒素污染状况及膳食暴露评估

目的 了解烟台市售食品黄曲霉毒素污染状况及居民膳食来源暴露风险水平。方法 免疫亲和层析高效液相色谱法测定样品中黄曲霉毒素,点评估方法估算人群黄曲霉毒素暴露量。结果 检测的市售食品中AFB1检出率为4.19%（19/453）,超标率为0.22%（1/453）,均值为0.86 μg/kg。AFB2、AFG1、AFG2和AFM1检出率分别为2.13%（9/423）、1.65%（7/423）、0.95%（4/423）和41.90%（44/105）,均值分别为0.29、0.64、0.33和 0.03 μg/kg。食品中存在AFB1、AFB2、AFG1和AFG2多重污染情况。AFB1的检出均值占到黄曲霉毒素(AFB1、AFB2、AFG1和AFG2)均值总和的47.18%。AFB1、AFB2、AFG1、AFG2和AFM1的日膳食暴露量分别为4.326、1.733、3.143、2.423和0.168 ng/（kg·bw·d）。AFB1、AFB2、AFG1、AFG2和AFM1的膳食暴露贡献率分别占到总体的36.69%、14.70%、26.65%、20.55%和1.42%。谷类及其制品的膳食暴露贡献最大,食用植物油的贡献次之。结论 AFB1总体检出率和均值均高于AFB2、AFG1和AFG2,是主要的污染品种。谷类及其制品和食用植物油是主要的AFB1、AFB2、AFG1和AFG2膳食暴露来源。乳制品是主要的AFM1的膳食暴露来源。烟台市居民AFB1和AFM1膳食暴露导致肝癌发病率为0.101/10万人和0.004/10万人。     

玉米中四种黄曲霉毒素的关系

目的了解我国玉米中黄曲霉毒素B1（AFB1）、黄曲霉毒素B2（AFB2）、黄曲霉毒素G1（AFG1）和黄曲霉毒素G1（AFG1）污染的关系。方法用统计方法分析玉米中任意两种毒素污染率、污染浓度的相关性;计算AFB1与总黄曲霉毒素（AFs）的数量关系,分析AFB1在AFs中的构成1结果AFB1检出率最高,AFB1没有单独污染,均伴随AFB1。任两种毒素浓度呈正相关（P=0．000）,AFB1、AFB1、AFG1与AFG1的相关系数均大于0．951任两种毒素检出率有相关性（P=0．000）,AFB1和AFBz相关性最强1随AFB1浓度区间增高,AFB1检出率增高,AFG1和AFG1检出率先升高后降低;AFB1与AFs浓度比升高,AFs高于4μg／kg时,浓度比超过0．51结论AFB1和AFBz污染密切相关,AFBz伴随AFB1,二者污染率和浓度呈正向变化。当AFB1浓度较高时,对AFG1和AFG1呈现抑制作用1按照AFs限量是AFB1的两倍,当玉米中AFs限量在4μg／kg以上时,同时制定AFB1和AFs限量,与仅制定AFB1限量相比,不增加管理效力。     

Microbial contamination of seven major weaning foods in Nigeria

Five million children aged less than five years die annually due to diarrhoea. The aim of the study was to identify some possible contributing factors for persistent diarrhoea. Seven weaning foods, including a locally-made food, were evaluated by estimating the microbial load using the most probable number method and aflatoxin levels (AFM1, AFG1, AFG2, and AFB2) by immunoaffinity column extraction and high-performance liquid chromatography (HPLC) with detection of fluorescence. The results showed that the locally-made weaning food had the highest microbial count (2,000 cfu/g) and faecal streptococcal count (25 cfu/g). Moulds isolated were mainly Aspergillus niger, A. flavus, A. glaucus, Cladosporium sp., and Penicillium sp. The home-made weaning food recorded the highest fungal count (6,500 cfu/g). AFM1 of the weaning foods was 4.6-530 ng/mL. One weaning food had AFB1 level of 4,806 ng/g. Aflatoxin metabolites, apart from AFM1 and AFB1 present in the weaning foods, were AFG1 and AFG2. There were low microbial counts in commercial weaning foods but had high levels of aflatoxins (AFM1, AFG1, AFG2, AFB1, and AFB2). Growth and development of the infant is rapid, and it is, thus, possible that exposure to aflatoxins in weaning foods might have significant health effects.     

Inhibition of aflatoxin production and growth of Aspergillus parasiticus by Cuminum cyminum, Ziziphora clinopodioides, and Nigella sativa essential oils

Aflatoxins are highly toxic and carcinogenic metabolites produced by Aspergillus parasiticus on food and agricultural commodities. Natural products may control the production of aflatoxins. The aims of this study were to evaluate the effects of the essential oils (EOs) of Cuminum cyminum, Ziziphora clinopodioides, and Nigella sativa on growth and aflatoxins production by A. parasiticus. Minimal inhibitory concentrations (MICs) and minimal fungicidal concentrations (MFCs) of the EOs were determined and compared with each other. Determination of aflatoxins (AFB(1), AFB(2), AFG(1), and AFG(2)) was performed by immunoaffinity column extraction using reverse phase-high performance liquid chromatography. The major oil components were α-pinene (30%) in C. cyminum, pulegone (37%) in Z. clinopodioides, and trans-anthol (38.9%) in N. sativa oils. In broth microdilution method, C. cyminum oil exhibited the strongest activity (MIC(90): 1.6; MFC: 3.5?mg/mL), followed by Z. clinopodioides (MIC(90): 2.1; MFC: 5.5?mg/mL) and N. sativa (MIC(90): 2.75; MFC: 6.25?mg/mL) oils against A. parasiticus (p<0.05). Aflatoxin production was inhibited at 0.25?mg/mL of C. cyminum and Z. clinopodioides oils, of which that of C. cyminum was a stronger inhibitor. C. cyminum EO caused significant reductions in values of 94.2% for AFB(1), 100% for AFB(2), 98.9% for AFG(1), 100% for AFG(2), and 97.5% for total aflatoxin. It is concluded that the EOs of C. cyminum, Z. clinopodioides, and N. sativa could be used as natural inhibitors in foods at low concentrations to protect from fungal and toxin contaminations by A. parasiticus.     

The effect of bread making steps on the degradation of aflatoxins produced as a result of single inoculation with Aspergillus flavus and combined inoculation with Aspergillus flavus and Aspergillus ochraceus

This study aimed to determine the effect of bread making steps on the stability of aflatoxin. Sakha 8 wheat and Gemaiza 5 wheat cultivars, were used in the present study. They were inoculated with a dense spore suspension of toxigenic fungal species of Aspergillus flavus and a non toxigenic species of Aspergillus ochraceus singly and combined. Aflatoxin concentration was determined in the whole wheat grain, after milling, after fermentation, and after bread-baking process. Results showed that the highest reduction percentage for the total aflatoxins (81, G1 and G2), was in Sakha 8 (32.96%) (single treatment), Gemaiza 5 (19.54%) (single treatment ), Gemaiza 5 (18.65%) (combined treatment), and finally in Sakha 8 (16.49%) (combined treatment). There was no significant difference (p < 0.05) in aflatoxins content between Sakha 8 and Gemaiza 5 treated singly and in a combined way before and after milling process. In the mean time, the percentage of AFB1, AFG1 and AFG2 were reduced by 31.98%, 44.53% and 35.35%, respectively, while the total aflatoxins concentration were reduced by 41.17% after baking. Results also showed the presence of a significant difference at p < 0.05 among the whole grain, after milling and after baking concerning AFG1, AFG2 and the total aflatoxins content. No significant difference was found in case of AFB1.     

Ionic liquid functionalized zinc oxide nanorods for solid-phase microextraction of aflatoxins in food products

Aflatoxins (AFs) in food and agricultural products pose serious health hazards to consumers. As a result, exports are restricted and farmers lose much needed income. One major challenge faced in controlling AFs in developing countries in particular is lack of simple and cost-effective methods of analysis. To address this problem, a solid-phase microextraction (SPME) technique was developed based on 1-hexyl-3-methylimidazolium hexafluorophosphate functionalized zinc oxide nanorods for the extraction of AFB1, AFB2, AFG1 and AFG2 in food products prior to HPLC analysis. The SPME was performed using 10 mg of the adsorbent at pH 7 and vortexing for 1 min at 500 rpm, and desorbed by sonication for 2 min in 1 mL acetonitrile. The technique showed excellent linearity (correlation coefficients, ≥0.997). LOD and LOQ were determined respectively to be 0.07 and 0.73 μg/kg for AFB1, 0.01 and 0.12 μg/kg for AFB2, 0.04 and 0.44 μg/kg for AFG1 and 0.02 and 0.18 μg/kg for AFG2. The intra- and inter-day relative standard deviations were in the ranges of 3.9–4.7% and 6.9–8.4%, respectively. The acquired recovery of blank samples of the pepper and groundnut samples spiked with mixed analytes at 5 and 10 μg/kg spiking levels were in the range of 88.6–99.8%. The SPME was employed for the analysis of the considered analytes from real chili pepper and processed groundnut samples. Overall, the technique is easy, fast, cost-effective and environmentally friendly and can be used for the analysis of AFs in various food and agricultural products.     

中国部分地区玉米中4种黄曲霉毒素污染调查

目的了解中国玉米中黄曲霉毒素B1(AFB1)、黄曲霉毒素B2(AFB2)、黄曲霉毒素G1(AFG1)和黄曲霉毒素G2(AFG2)的污染状况。方法从吉林、河南、湖北、四川、广东、广西采集玉米样品,用HPLC测定黄曲霉毒素含量。结果共测定279份玉米,黄曲霉毒素阳性率为75.63%,阳性样品平均浓度为44.04μg/kg,浓度范围0.20～888.30μg/kg。四川、湖北、广西、河南、广东和吉林样品的阳性率依次为90.48%、93.75%、87.50%、36.96%、91.84%和52.17%,平均浓度依次为107.93、70.98、39.65、8.06、3.70和1.15μg/kg。4种毒素中AFB1阳性率和平均浓度最高,分别为74.55%和39.64μg/kg;AFB2、AFG1和AFG2的阳性率和平均浓度依次降低,阳性率分别为58.42%、41.22%和19.71%,平均浓度分别为3.81、3.47和0.51μg/kg。结论玉米的黄曲霉毒素污染比较普遍;调查的各地样品均有不同程度污染,总体上南方地区高于北方;4种毒素中以AFB1污染为主。     

福建省市售花生及花生制品中4种黄曲霉毒素污染调查

目的:了解福建省花生中黄曲霉毒素B1(AFB1)、黄曲霉毒素B2(AFB2)、黄曲霉毒素G1(AFG1)和黄曲霉毒素G2(AFG2)的污染状况。方法:从福建省九个地区采集花生和花生制品,用高效液相色谱测定黄曲霉毒素含量。结果:共测定62份花生,40份花生酱,20份花生油。以国家标准规定的黄曲霉毒素B1限值20μg/kg计,超标率分别为17.7%、37.5%和0。4种毒素中AFB1阳性率和平均浓度最高,AFB2、AFG1和AFG2的阳性率和平均浓度依次降低。结论:福建省花生和花生制品的黄曲霉毒素污染比较普遍,4种毒素中以AFB1污染为主。