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表面增强拉曼光谱(surface-enhanced Raman spectroscopy,SERS)技术作为一种新型的快速检测技术正在被广泛应用于保健食品非法添加化学药物的检测中。通过设计不同的SERS基底,可以搭建出集样品前处理、上机分析、匹配定性的一体化拉曼光谱检测系统。与传统的检测方式相比,SERS技术具有无损、快速、图谱指纹特性强等优点,在保健食品非法添加化学药物的快速检测中具有巨大潜力。本文主要综述了SERS的技术原理、SERS基底分类以及SERS技术在保健食品中非法添加化学药物检测中的应用,并对SERS技术在保健食品中非法添加化学药物检测方面的应用前景进行了展望,以期为保健食品中未知违禁物的识别提供理论支撑。 相似文献
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目的建立筛查保健食品中非法添加药物的新方法。方法对39种常见减肥类药物进行离子迁移(IMS)检测,建立该39种非法添加药物的IMS检测数据库。称取保健食品一次服用量,用无水乙醇溶解,取上清液点于试纸上,直接进样。通过离子迁移谱对减肥类保健食品中可能非法添加药物进行筛查。结果离子迁移测定39种可能非法添加的药物,其筛查的假阳性率小于10%,假阴性率小于5%。结论 IMS可以用于保健食品中非法添加药物的筛查,并具有较高的筛查效率,可作为保健食品监督检测中更快速、灵敏的技术手段。 相似文献
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本文结合保健食品的功能声称分类, 综述了近年来较常发生非法添加的功能类别的保健食品产品中, 非法添加药物成分的现状, 并对其中每个类别非法添加的特点进行了分析。由于近年来不断出现非法添加药物, 本文通过梳理药物的药理作用机制, 对可能添加的药物进行了归纳。从样品的前处理方法和检测技术2个方面, 对目前非法添加检测的研究现状进行了综述。结合本实验室工作及目前非法添加的现状, 本文对其检测技术的需求、今后研究的发展方向和检测结果的判定等进行了分析。以期为开展保健食品非法添加药物成分检测的科研工作者提供参考, 为保健食品质量安全提供技术支持, 为监管部门打击此类非法行为提供借鉴。 相似文献
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建立在线固相萃取-高效液相色谱快速检测辣椒粉中苏丹红染料的方法。样品经乙腈超声提取离心过滤后直接进样,在富集柱上进行纯化和富集,通过阀的切换把富集柱上的被测组分苏丹红转移至分析柱上分离,外标峰面积法定量。四种苏丹红在1200 ng/m L浓度范围内具有良好的线性关系(r≥0.9992),检出限为1.01.95 ng/g,加标回收率为86.2%101.6%,相对标准偏差小于6.18%。该方法简单,快速,准确可靠,满足辣椒粉中苏丹红染料的快速检测要求。 相似文献
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保健食品是特殊食品,向其中添加违禁药物的现象屡禁不止,市场监管人员需要根据不同的需要选择合适的检测技术.本文对目前保健品中违禁药物的常用样品前处理方法和检测技术光谱法、薄层色谱分析法、液相色谱法、气相色谱-质谱法进行综述,以期为保健品中违禁药物的检测和市场监管提供参考. 相似文献
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近年来,向保健品中非法添加药物的现象时有发生。本研究针对不同保健食品的类别,梳理近年来发生的保健食品非法添加药物事件,对各类保健食品中常可能非法添加的药物及危害进行总结,并且对不同类别的保健食品中非法添加药物的检测技术进行归纳,分析技术的优缺点,为保健食品的市场监管提供参考。 相似文献
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保健食品是适用于特定人群食用, 具有调节机体功能, 不以治疗疾病为目的食品。随着人们生活水平和对健康关注度的不断提高, 保健食品市场也日益增加。一些不法商家为了牟取利益在保健食品中非法添加具有治疗效果的化学药物和有害成分, 给消费者的身体健康造成严重威胁。非法添加化学药物的种类繁多, 且新型化学药物不断出现, 因此对保健食品中非法添加化学药物进行有效监管, 建立能同时对保健食品中目标物和非目标物进行全面检测分析的高效、可靠、灵敏的检测方法已成为行业亟需解决的焦点问题。本文对保健食品非法添加化学药物的现状进行了简单概述, 重点梳理了保健食品中非法添加化学物质检测方法, 并对新型检测技术与方法进行展望, 为保健食品非法添加快速筛查提供参考。 相似文献
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Madonna N. Mashabela Kamogelo M. Selahle Puffy Soundy Kevin M. Crosby Dharini Sivakumar 《Journal of food science》2015,80(11):H2612-H2618
In this study, influence of 3 types of photo‐selective nets (pearl, red and yellow) and a standard black net on marketable yield, fruit quality and bioactive compounds after postharvest storage was investigated. Percentage marketable fruits were higher in green sweet peppers produced under the pearl nets. Fruits produced under the pearl nets showed higher fruit mass, firmness, chlorophyll content, ascorbic acid content, antioxidant scavenging activity after postharvest storage. Red/far red photon ratio under the pearl net could have improved the ascorbic acid content and the antioxidant scavenging activity in green peppers. Green sweet peppers grown under the pearl nets had higher hue values and maintained green color longer. Our results showed the impact of modified light quality on the bioactive compounds of green sweet pepper during postharvest storage. 相似文献
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目的建立电喷雾-离子迁移谱(electrospray ionization-ion mobility spectrometry,ESI-IMS)技术快速筛查改善睡眠类保健食品和中成药中非法添加地西泮、咪达唑仑、硝西泮、阿普唑仑、巴比妥等5种化学药物的分析方法。方法样品用乙腈超声提取,90%乙腈水溶液稀释后ESI-IMS直接测定。在正离子模式下检测地西泮和咪达唑仑,在负离子模式下检测硝西泮、阿普唑仑、巴比妥,基质外标法定量。结果 5种化合物在各自浓度范围内线性关系良好,相关系数均大于0.99。地西泮、咪达唑仑、巴比妥、硝西泮、阿普唑仑的检出限分别为0.20、0.50、2.00、8.00、8.00mg/L,平均回收率为78.7%~113.8%,相对标准偏差(RSD,n=6)小于10%,与液相色谱-串联质谱(1iquid chromatography-tandem mass spectrometryLC-MS/MS)检测结果一致。结论本方法快速准确,可实际应用于改善睡眠类健康产品中非法添加地西泮、咪达唑仑、硝西泮、阿普唑仑、巴比妥等5种违禁药物的筛查。 相似文献
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目的 建立固相萃取-超高效液相色谱法同时测定辣椒干、辣椒酱、辣椒油等辣椒制品中非法添加的4种苏丹红染料(苏丹红Ⅰ、苏丹红Ⅱ、苏丹红Ⅲ、苏丹红Ⅳ)的方法.方法 样品经正己烷超声提取,提取液经ProElutTMSDH苏丹红专用柱净化富集,采用Agilent ZORBAX Eclipse Plus C18柱(4.6 mm×1... 相似文献
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Silicon has proven to be effective in controlling many diseases in plants and could be used as an alternative strategy against chemical control of diseases. Rice hull is an environmental friendly natural source of silicon. This study was conducted to investigate the effect of rice hull as a Si source on anthracnose disease and also on fruit cuticle thickness (CT), total soluble and cell wall-bound phenolic compounds (TSP and CWBP) in fruits and formation of fungal appressoria on fruits as possible mechanisms of disease reduction in capsicum (Capsicum annuum L.). In this study a simplified hydroponics system (SHS) with rice hull as an inert media and nutrients supplied with either NF (New Formula) or Albert's solution was used. A liquid hydroponic system (LHS) was also maintained with same nutrient solutions as controls. Disease development was assessed by challenge inoculation with Colletotrichum gloeosporioides on fruits. CT was measured using stage and ocular micrometer. TSP and CWBP in fruits were analysed by Folin-Ciocalteu method during first 5 days after inoculation (DAI). Appressoria formation by fungal conidia on fruit peels at inoculated spots was observed through micrometer daily after inoculation. More than 83% disease reduction was observed in fruits harvested from SHS compared to that of LHS supplied with both nutrient solutions. There were significantly higher values of CT and CWBP (about 45% and 30% respectively) in fruits from SHS compared to that of LHS (Si-free). However, TSP was not significantly affected by Si treatment. A higher percentage of appressoria was prevailed on fruits harvested from SHS thus the disease initiation was delayed compared to that of LHS. There may be a possibility that germination of appressoria was hindered by thicker cuticle or biochemical reaction involved with induced CWBP in fruits from Si treated plants. 相似文献
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目的:优化辣椒叶总多酚超声波辅助提取工艺。方法:乙醇溶液为提取溶剂,多酚得率为考察指标。在单因素实验考察6项影响因素的基础上,运用正交实验法对辣椒叶总多酚的提取工艺进行优化。结果:影响多酚得率的主要因素是乙醇体积分数、pH、料液比和提取温度;最优提取工艺为溶剂乙醇体积分数60%,pH1,料液比1:30g/mL,提取温度45℃,超声功率200W,提取时间40min;此条件下多酚得率为22.72mg/g。结论:采用正交实验法优化辣椒叶总多酚超声波辅助的提取工艺,具有可行性,且此工艺提取的辣椒叶多酚得率较高。 相似文献
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ABSTRACT: The levels of capsaicinoids and carotenoids and ASTA color values in Korean red pepper powders ( Capsicum annuum , L.) were 10.54-250.87mg/100g, 187-335mg/100g, and 64.55-124.07, respectively. The investigation of decoloring effects caused by sunlight exposure was carried out over 42 d. ASTA color values, which had been 18.35-64.56, were decreased by more than 50% after 42 d. During sunlight exposure, the L* value was increased, and a* and b* values were decreased in colorimetric values. The a* value showed a markedly decrease. Properties like higher C* values and lower ̊ab and δE*ab values can be regarded as very effective parameters for the convenient assessment of color quality in red pepper powder. 相似文献
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