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Antibiotic residues in animal-derived foods have brought serious threats to human health as well as economic losses to the food industry. Given that analytical methods are crucial but remain limited, a rapid, reliable, and cost-effective method is needed for detecting antibiotic residues. In this paper, a method using attenuated total reflection Fourier transform mid-infrared (ATR FT-MIR) spectroscopy combined with chemometrics was established for the detection of tetracyclines hydrochloride (TCsH). Firstly, TCsH powders were scanned using ATR FT-MIR spectroscopy, and the characteristic peaks of these samples were found in this region. Then, milk samples with different TCsH concentrations (1 to 160 ppb) were measured and were analyzed using principal component analysis (PCA) and partial least squares regression (PLSR) algorithms. The results showed that the kinds of TCsH in milk could not be classified. However, TCsH concentration ranging from 1 to 160 ppb in milk samples was successfully determined with high determination coefficient (R 2) values of 0.88–0.90, low root-mean-square errors values of 9.76–18.2, and high residual predictive deviation (RPD) values close to or greater than 3. These results indicated that ATR FT-MIR spectroscopy could be used to identify TCsH powders based on their unique spectral features, and was suitable for the rapid detection of TCsH concentration in milk. 相似文献
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<正>2005年亚洲食品配料及技术展览会于3月在上海光大会展中心举行,作为全球领先的维生素和类胡萝卜素产品的生产商,帝斯曼营养产品部的创新方案带来健康食品新概念。创新产品:茶维力TM(TEAVIGOTM)、叶黄素和玉米黄质帝斯曼营养产品部一向致力于将传统的健康理念整合入突破性的创新产品。从 相似文献
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结合我国纺织品市场状况和纺织企业产品开发设计情况,运用现代科学理论,从一个新的角度论述了纺织新产品开发设计的方法和路径. 相似文献
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前两天的一个晚上,晚饭后我在一旁看书,爱人在网上购物,选购着自己心仪的东西,而后很满足的说:东西真不错,我现在都是钻石等级了,你几级啊?我三颗心还差24次评价,就没好意思跟她说。不过网购真的方便、实惠,并带给了商家巨大的利益。某电商曾经很得意的说:你每眨一下眼就能卖出7件化妆品及10张电话充值卡;每一分钟能卖出63件男装和190件女装;你吃一顿饭的时间就有人买 相似文献
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2012年1月26日~22日的科隆国际家具展提出了一系列新的展示模式,将家具产品更好地融入家居氛围中,将潮流趋势更直观地展示给参观者。在生活化的室内(Living Interiors)展区,家具和浴室、地板、墙壁和灯光等紧密结合在一起,形成了4个主题居住区;在纯粹之地(Pure Village),名牌制造商和星级设计师一起打造未来居住理念;在"展台家居内景"项目中,设计师将建筑元素、室内、室外以及家具和家装元素都结合在一起;在7号展厅开启了一个室内家居实景的表演,每到整点就变成舞台。生动的展览带给全球观众和展商无尽的家居 相似文献
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本文阐述了在新形势下我国纺织印染助剂工业正迎来新的发展机遇,同时也存在不少新问题,指出了创新新途径,重点是产品创新和工艺创新,才能不断扩大建国60年来我国纺织行业发展形成的大好局面,把我国纺织印染助剂工业做精做强。 相似文献
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沙丁胺醇,莱克多巴胺和盐酸克伦特罗是饲料中主要检测的三种"瘦肉精"类添加物。根据相关国家标准GB/T22147-2008的要求,这三种化合物应该采用液相色谱-质谱联法来进行检测。本文中所介绍的方法主要根据GB/T22147-2008的要求进行样品处理,并采用Perkinelmer Flexar SQ 300 MS液质联用仪进行分析检测,实现对三种化合物5分钟内的快速分离,其最低检出限可到0.5ppb,结果具有良好的重现性(RSD=2.6%)和较宽的线性范 相似文献