共查询到20条相似文献，搜索用时 218 毫秒
1.
黄曲霉毒素B1、黄曲霉毒素M1具有极强"三致"作用,污染饲料、乳及乳制品,对奶牛业存在潜在的危害,给人类健康造成严重威胁。饲粮中AFB1转化为乳中AFM1呈现一定的规律,即日粮中AFB1浓度为10μg/kg时,牛奶中会出现AFM10.17μg/kg。降低牛奶AFM1浓度最根本措施是减少饲料中AFB1的污染,防止饲料AFB1污染可以通过控制饲料含水量及防止储存地点污染等措施,饲料中AFB1脱毒解毒方法有物理法、化学法和生物学法等。 相似文献
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ELISA方法检测辣椒调味品中黄曲霉毒素B1（AFB1）的含量的关键是样品的前处理过程.本研究的目的是探讨pH值、氯化钠含量和油脂含量对ELISA法检测AFB1结果的影响.方法：以市场上具有代表性的辣椒调味品为样本,通过添加不同浓度的酸碱、NaCl和大豆油脂,观察不同提取液水平对黄曲霉毒素B1 ELISA结果的影响.结果：中性的提取液环境和较低的氯化钠含量和油脂含量比较适合ELISA检测的准确度和灵敏度.结论：在AFB1 ELISA检测的过程中,去除油脂和氯化钠的影响,调节检测液的pH趋于中性是保证AFB1 ELISA检测准确性的关键,值得今后对黄曲霉毒素B1 ELISA检测方法进行改进. 相似文献
3.
孙建平 《通化师范学院学报》2006,27(4):81-82
1引言黄曲霉毒素简称AFT,是黄曲霉的代谢产物,为一种有毒物质,易污染食品,有较强的致癌作用,对人及动物的影响较大,因此检测食物中黄曲霉毒素毒性大小有很重要的意义.目前实验中常用的检测方法是高效液相色谱法(HPLC)及间接竞争酶联免疫吸附法(ELISA).本实验利用的是鸡胚培养法 相似文献
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黄曲霉毒素对机体的损害与硒的保护作用 总被引：5，自引：0，他引：5
从黄曲霉毒素与硒的生化特性和作用、致癌与抗癌的作用和机理、对机体免疫功能和非特异性免疫功能的影响和强化等六个方面进行了回顾和分析.为黄曲霉毒素中毒的防治提供了进一步的启示. 相似文献
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一、环境问题 1.环境问题的含义和分类 环境问题是由于自然或人为的原因而造成的环境污染和破坏,对人类产生不利影响或危害的现象.按成因可分为原生环境问题和次生环境问题两类,当前环境科学研究的重点内容是次生环境问题. 相似文献
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黄曲霉毒素是迄今发现污染农产品最强的一类生物毒素。它的毒性为氰化钾的10倍,为砒霜的68倍,被列入特剧毒物质,在大米,花生,大豆及油料种子等粮食中均曾发现。现今,中国农科院油料所在黄曲霉毒素的速测技术及仪器研究方面有了新的突破。该研究成果已向国家专利局申请发明专利保护。 相似文献
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王柄根 《阅读与作文(高中版)》2022,(4)
《动态》:路德环境作为一家主营河湖淤泥与工程泥浆处理业务的公司,是如何转型酒糟资源化利用业务的?
孔铭:公司起步阶段主要是以无机高含水废弃物-河湖淤泥为处理对象,在开展仁怀盐津河水环境治理项目过程中,发现当地酒企酿酒产生的白酒糟如未得到环保处理,会对当地土地、水体造成污染;同时酒糟堆放易发生霉变,产生黄曲霉毒素,存在养... 相似文献
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以往,人们只认为细菌或病毒侵袭、营养不足、不良的生活方式、心理不健康等是生病的主要原因,但近年来医学研究却揭示,体内毒素的积存也是人们患病的一个重要原因.因此,专家们认为,人们若能像打扫环境那样经常对体内进行"大扫除",及时消除毒素,就自然健康少病. 相似文献
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Abstract One of the major impediments for diversification of groundnut (Arachis Hypogaea L.) as food crop is aflatoxin contamination. The study was conducted with an objective to assess the adoption gaps in aflatoxin management practices of groundnut (AMPG) and the farmer's characteristics influencing these gaps. The study used an expost-facto research design and multi-stage random sampling. The data were collected from 180 respondents through interview schedule. For measuring adoption gap, knowledge of AMPG and perception of groundnut quality suitable scales were developed. The data were subjected to multiple regression analysis to know the characteristics, which influenced the adoption gaps in AMPG. The majority of farmers were in high adoption gap category, as most of the farmers had not adopted the harvest and post-harvest management practices. Farmers' characteristics such as knowledge, market orientation and innovativeness influenced the adoption gap significantly. These three variables put together explained 58% of variation in adoption gap. Based on the results, it is suggested to formulate strategies to increase the knowledge of farmers through various extension approaches. If the knowledge on AMPG is improved the adoption gaps can be reduced. The maiden research effort, shed light on the socio-economic dimensions of aflatoxin contamination and constraints for aflatoxin management at farmers' level. The study has significance for the policy makers, extension departments and groundnut farmers for production of quality groundnut. 相似文献
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Aflatoxins produced primarily by two closely related fungi, Aspergillus flavus and Aspergillus parasiticus, are mutagenic and carcinogenic in animals and humans. Of many approaches investigated to manage aflatoxin contamination, biological control method has shown great promise. Numerous organisms, including bacteria, yeasts and nontoxigenic fungal strains of A.flavus and A. parasiticus, have been tested for their ability in controlling aflatoxin contamination. Great successes in reducing aflatoxin contamination have been achieved by application of nontoxigenic strains of A. flavus and A. parasiticus in fields of cotton, peanut, maize and pistachio. The nontoxigenic strains applied to soil occupy the same niches as the natural occurring toxigenic strains. They, therefore, are capable of competing and displacing toxigenic strains. In this paper, we review recent development in biological control of aflatoxin contamination. 相似文献
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Da-wei Liu Hong-yi Liu Hai-bin Zhang Ming-chang Cao Yong Sun Wen-da Wu Chang-hu Lu 《Journal of Zhejiang University. Science. B》2016,17(2):158-168
A survey was conducted to determine whether mycotoxins were present in the foods consumed by red-crowned cranes (Grus japonensis) in the Yancheng Biosphere Reserve, China. Collected in the reserve’s core, buffer, and experimental zones during overwintering periods of 2013 to 2015, a total of 113 food samples were analyzed for aflatoxin B1, deoxynivalenol, zearalenone, T-2 toxin, and ochratoxin A using high performance liquid chromatography (HPLC). The contamination incidences vary among different zones and the mycotoxins levels of different food samples also presented disparity. Average mycotoxin concentration from rice grain was greater than that from other food types. Among mycotoxin-positive samples, 59.3% were simultaneously contaminated with more than one toxin. This study demonstrated for the first time that red-crowned cranes were exposed to mycotoxins in the Yancheng Biosphere Reserve and suggested that artificial wetlands could not be considered good habitats for the birds in this reserve, especially rice fields. 相似文献
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通过问卷调查等方法对超重或肥胖的学生进行调查,结果表明：超重或肥胖的学生喜欢吃油炸类和甜食的占79．85％,而以甜品饮料为零食的占61．54％,在日常习惯中吃一些高热量、低营养的快餐食品,使热量和糖的摄入大大提高,是造成超重或肥胖的主要因素;大约有一半的超重和肥胖初中生不愿意参与体育活动。运动因素、饮食习惯、对形体美的正确认知和社区环境改善是干预超重或肥胖的主要手段。 相似文献
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综合讨论了厌氧折流板反应器(ABR)工艺特征,阐述了国内外关于ABR启动及实际应用的研究现状。认为ABR具有耐冲击负荷、对有毒物质适应性强、固液分离效果好等显著特点。因此,ABR作为一种新型高效生物处理技术,在我国废水处理中,特别是对高浓度有毒工业废水处理具有良好的研究开发价值。 相似文献
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余海秋 《南宁职业技术学院学报》2012,(1):16-19
近年来,泰国美食进入昆明市场。由于泰国美食具有独特的自然和人文背景、丰富的原材料、富有特色的口味,以及独特的中国式炒菜、泰式"凉拌菜"YAM、炖、炸和烤等制作方法,并以其独特的口味、营养价值、饮食方式和餐厅布置,逐渐地被昆明人所接受和喜爱。但是,泰国美食也面临着价格偏高、品牌低下、宣传力度不够等发展问题和挑战。 相似文献
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美国高校招生时,侧重学生的高中成绩、社会实践活动中的表现以及学术能力测试（SAT）或美国高等学校测试（ACT）的成绩等多方面因素。考试形式灵活,为学生提供了多种机会和选择。中国高考制度存在着形式单一、考试承担职能过多等一系列问题。美国高校招生的政策中,有可供我国高考改革借鉴的内容。中国的高考制度改革,既要学习世界发达国家的先进经验,同时要结合中国的国情。 相似文献
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Shi-kai Fan Jun Zhu Wen-hao Tian Mei-yan Guan Xian-zhi Fang Chong-wei Jin 《Journal of Zhejiang University. Science. B》2017,18(10):897-905
Cadmium (Cd) contamination in soil is an increasingly serious problem. Management of plant nutrients has been proposed as a potentially promising strategy for minimizing Cd accumulation in crops grown in contaminated soil. This study investigated the effects of split applications of nitrogen (N) fertilizers on the Cd concentration in Chinese cabbage (Brassica chinensis L.) plants grown in Cd-contaminated soil. Compared with single applications, split applications of ammonium or urea resulted in significantly lower Cd concentrations, and higher biomass production and antioxidant-associated nutritional quality in the edible plant parts. However, when nitrate was used as the N fertilizer, there were no significant differences between the split and single applications for the same parameters. We conclude that a split application could be more beneficial than a single application method when ammonium or urea is used as the N fertilizer for vegetable cultivation in Cd-contaminated soil. 相似文献
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廖圣河 《江西教育学院学报》2003,24(2):119-121
现代社会是一个高科技、高交际、高信息、高效率的社会。与此相适应，现代语文能力呈现出典型的时代特征：突出创新精神；倡导效率意识；强化科技素养；重视口语交际；降低文言文要求。 相似文献
20.
重金属水污染对植物生长影响的方式及研究方法 总被引：2，自引：0，他引：2
胡金朝 《商丘师范学院学报》2012,28(9):74-78
我国重金属水污染日趋严重,已明显危害到水生态和人类健康,有关重金属水污染对植物毒害机理的研究越来越多.本文结合笔者的研究工作,介绍了重金属与重金属水污染的概念,总结了近年来有关重金属水污染对植物毒害影响的研究内容及相应研究方法,归纳了重金属水污染对植物毒害的一般规律与可能机理. 相似文献