Aflatoxin levels in foodstuffs in Fiji and Tonga islands

Fungal growth is a major problem of food storage in humid environments, as occur in South Pacific countries for parts of the year. Major crops, including edible nuts, copra and root crops, are susceptible toAspergillus growth and therefore potential contamination with aflatoxin. Liver cancer occurs in Fiji and Tonga, with the occurrence in Fijians being significantly higher than in the Indian population.Thirty-three peanut samples from farmers were analysed for aflatoxin and 50% of the samples from Fiji were positive but only 9% from Tonga, reflecting different storage practices. Local copra, cassava, and maize samples were found contaminated, with only the maize at a serious level. Twenty-five plate food samples from Fiji showed low contamination. When starch foods from the Fijian diet left after cooking were analysed to follow potential aflatoxin development only sweet potatoes showed some contamination.     

世界各国动物源残留监控体系概况

本文着重介绍了欧盟、美国和澳大利亚的动物源残留监控情况并对2009年的监控报告进行了分析总结。     

我区乳、肉、禽蛋生产发展现状及其前景

本文对内蒙古自治区近三年来畜牧业生产畜产资源与乳、肉、禽蛋等动物食品生产发展及其乳、肉制品等加工能力、生产水平,人均占有量等现状,进行了系统的研究分析。並结合我国国情和营养需要,合理地调整食物结构,以植物性食物为主,适当地增加动物性食品提高人们营养质量的食物发展战略和自治区多年畜牧业发展实际与可能。进行了今后7年、12年和32年内各个阶段全区乳、肉、禽蛋等产置及人均占有量等畜产食品发展的初步规划设想和预测。     

辐照香料与食品的鉴定

本文采用ESR和化学发光等测量法鉴定辐照香料和辐照食物,研究了花椒粉、胡椒粉(黑、白)、大料、姜粉、芥末、咖哩粉、安息茴香、五香粉、香辣酥和复合调料等香料,以及全脂奶粉、纯藕粉、健儿粉、白面粉、甘草霜和食用明胶等食物经60Coγ射线辐照后,ESR及化学发光强度的变化,以及辐照剂量,贮藏时间和样品粒度对ESR及化学发光的影响。结果表明,两种方法均可有效地区分辐照和未辐照食物和香料,而ESR法较化学发光法更易应用,其鉴定的有效期在30天以上。此外,还对某些包装材料如玻璃、木材和纸等的ESR变化规律进行了初步研究。     

动物源食品官方评议工作现状及对策分析

介绍动物源食品官方评议工作主要技术依据,相关国际组织,以及动物源食品官方评议工作的意义,分析目前官方评议工作现状及取得的成就,提出加大培训完善相关法律法规建设等建议。     

竞争间接ELISA检测饲料中脱氧雪腐镰刀菌烯醇和玉米赤霉烯酮

应用本实验室研制的抗脱氧雪腐镰刀菌烯醇和抗玉米赤霉烯酮单克隆抗体建立的竞争间接ELISA方法对江西省部分猪场的45份猪全价饲料中脱氧雪腐镰刀菌烯醇和玉米赤霉烯酮的含量进行了检测,结果67%样品的玉米赤霉烯酮含量大于100 ng/g,4份样品中脱氧雪腐镰刀菌烯醇的含量超过国家限量标准100 ng/g。     

微波辅助萃取气质联用仪测定动物性食品中氯霉素残留量

运用微波辅助萃取技术,进行提取,结合气相色谱-质谱联用仪检测,建立动物性食品中氯霉素残留量的检测方法,该检测方法的回收率为76.2%-94.7%,相对标准偏差为6.1%-8.6%,最低检测浓度为0.1μg/kg。     

高效液相串联质谱法测定动物源食品中喹赛多、卡巴氧残留

本试验建立了动物源食品中喹喔啉类药物喹赛多、卡巴氧残留量的液相色谱—电喷雾串联质谱测定方法.采用酸性乙腈—甲醇混合溶剂提取样品中的残留物,提取液浓缩后经HLB固相萃取小柱净化,以液相色谱—串联质谱仪测定,外标法定量.结果表明:喹赛多、卡巴氧质量浓度为1-50μg.L-1时具有良好的线性范围,相关系数>0.999;在5-20μg.kg-13个添加水平范围内的回收率为69.10%-93.54%,相对标准偏差为2.49%-14.45%,方法检出限分别为3和2μg.kg-1.可见,本方法适用于动物源性样品中喹喔啉类药物残留的定量测定.     

Extensive Screening for Plant Foodstuffs in Okinawa,Japan with Anti-Obese Activity on Adipocytes <Emphasis Type="Italic">In Vitro</Emphasis>

To search for plant foodstuffs with potent anti-obese activity, we conducted a large scale screening based on the inhibitory activity on adipogenesis and the facilitating activity on adipolysis in vitro. That is, inhibition of intracellular lipid accumulation and facilitation of lipid degradation in 3T3-L1 adipocytes were extensively screened from ethanol and hexane extracts of approximately 100 kinds of plant foodstuffs marketed in Okinawa prefecture, which has been famous for the highest prevalence of exceptionally long-lived individuals in the world. Among them thirty one foodstuffs showed potent inhibitory activity on intracellular lipid accumulation in 3T3-L1 adipocytes, whereas only four foodstuffs showed clear facilitating effect on lipid degradation in 3T3-L1 adipocytes. Although further study to examine the in vivo effects on adipogenesis and adipolysis is required, this is the first study to investigate anti-obese characteristics of wide range of traditional Okinawa foodstuffs so that the results give useful information to take another look at Okinawa food culture.