Food Additives & Contaminants最新文献_第9页

Effect of time, temperature and solvent on the stability of T-2 toxin, HT-2 toxin, deoxynivalenol and nivalenol calibrants 时间、温度和溶剂对T-2毒素、HT-2毒素、脱氧雪腐烷醇和雪腐烷醇校准剂稳定性的影响

Food Additives & Contaminants Pub Date : 2001-11-01 DOI: 10.1080/02652030110050168

J. Widestrand, H. Pettersson

{"title":"Effect of time, temperature and solvent on the stability of T-2 toxin, HT-2 toxin, deoxynivalenol and nivalenol calibrants","authors":"J. Widestrand, H. Pettersson","doi":"10.1080/02652030110050168","DOIUrl":"https://doi.org/10.1080/02652030110050168","url":null,"abstract":"The influence of solvent, storage time and temperature on the stability of the trichothecene mycotoxins T-2 toxin (T-2), HT-2 toxin (HT-2), deoxynivalenol (DON) and nivalenol (NIV) was investigated. Toxins in acetonitrile, ethyl acetate or as thin film were stored in sealed glass ampoules at -18, 4, 25 and 40°C for up to 24 months. Samples were analysed by HPLC with UV detection. The results show that acetonitrile was the preferred solvent and no significant (t 0.95 -test) decomposition occurred for any of the four trichothecenes when stored for 24 months at 25°C or 3 months at 40°C. T-2 and HT-2 in ethyl acetate or as thin film were also stable under the same conditions. DON and NIV in ethyl acetate or as thin film were stable for up to 24 months at -18°C, but a significant decomposition of DON and NIV in ethyl acetate was observed for both toxins after 24 months of storage at 4°C and after 12 months at 25°C. When stored as thin film, a significant trend of decomposition of DON occurred after 24 months of storage at 4°C and after 6 months of storage at 25°C. A significant decrease of NIV stored as thin film was observed after 9 months at 25°C. In conclusion, acetonitrile was the most suitable solvent for long-term storage of T-2, HT-2, DON and NIV.","PeriodicalId":12310,"journal":{"name":"Food Additives & Contaminants","volume":"1 1","pages":"987 - 992"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79669383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 45

Polycyclic musk fragrances in fish samples from Berlin waterways, Germany 德国柏林水道鱼类样本中的多环麝香

Food Additives & Contaminants Pub Date : 2001-11-01 DOI: 10.1080/02652030110063579

H. Fromme, T. Otto, K. Pilz

{"title":"Polycyclic musk fragrances in fish samples from Berlin waterways, Germany","authors":"H. Fromme, T. Otto, K. Pilz","doi":"10.1080/02652030110063579","DOIUrl":"https://doi.org/10.1080/02652030110063579","url":null,"abstract":"The contamination of different fish species by polycyclic musks [Galaxolide® (HHCB), Tonalide® (AHTN), Celestolide® (ADBI), Phantolide® (AHMI), and Traesolide® (ATII)] within the framework of an exposure monitoring programme are reported. A total of 341 fish samples were taken from three waterways in Berlin known to be contaminated to different extents with sewage. The mean levels of musk fragrance compounds reported on a whole weight basis in fish samples were as follows for the most common polycyclic compound, HHCB, in samples (taken from edible parts) of eel caught in waters strongly polluted with sewage levels were 1513 μg/kg (6471 μg/kg lipid) (AHTN: 726 μg/kg and from slightly polluted waters 52 μg/kg (445 μg/kg lipid) (AHTN: only one value above the detection limit). Median concentrations in fish samples were: perch 200 μg/kg (33.3mg/kg lipid) common bream 1571 μg/kg (90.1mg/kg lipid), roach 168 μg/kg (13.0mg/kg lipid), pike 366 and 370 μg/kg (66.5 and 61.7mg/kg lipid) and for pike perch 190 μg/kg (47.3mg/kg lipid). ADBI, AHMI and ATII could be determined only in low concentrations (< 107% of the total contents of polycyclics in eel). Clear concentration differences were seen between fish samples from waters contaminated at different levels within the programme of biomonitoring. This demonstrated that polycyclic musks are a very good indicator of the level of contamination of a waterway with sewage. Human exposure to these musk fragrances from consumption of contaminated fish was estimated to be low in comparison to direct dermal absorption from the use of fragrance products.","PeriodicalId":12310,"journal":{"name":"Food Additives & Contaminants","volume":"41 1","pages":"937 - 944"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87071334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Modelling migration from high-density polyethylene containers into concentrated solutions used as food flavourings 模拟从高密度聚乙烯容器到用作食品调味品的浓缩溶液的迁移

Food Additives & Contaminants Pub Date : 2001-11-01 DOI: 10.1080/02652030110050339

M. Fauconnier, V. Panhaleux, E. Vanzeveren, M. Marlier, J. Wathelet

引用次数: 6

Measurement of paralytic shellfish toxins in molluscan extracts: comparison of the microtitre plate saxiphilin and sodium channel radioreceptor assays with mouse bioassay, HPLC analysis and a commercially available cell culture assay 软体动物提取物中麻痹性贝类毒素的测定:微滴板沙参苷和钠通道放射受体测定与小鼠生物测定、高效液相色谱分析和市售细胞培养测定的比较

Food Additives & Contaminants Pub Date : 2001-11-01 DOI: 10.1080/02652030110048594

L. Llewellyn, J. Doyle, J. Jellett, R. Barrett, C. Alison, C. Bentz, M. Quilliam

{"title":"Measurement of paralytic shellfish toxins in molluscan extracts: comparison of the microtitre plate saxiphilin and sodium channel radioreceptor assays with mouse bioassay, HPLC analysis and a commercially available cell culture assay","authors":"L. Llewellyn, J. Doyle, J. Jellett, R. Barrett, C. Alison, C. Bentz, M. Quilliam","doi":"10.1080/02652030110048594","DOIUrl":"https://doi.org/10.1080/02652030110048594","url":null,"abstract":"This study compared five methods of measuring paralytic shellfish toxins (PSTs) including the long-used mouse lethality bioassay, a commercially available cell culture test (MIST® Quantification kit), HPLC analysis, and two newly developed radioreceptor assays utilizing mammalian sodium channels and saxiphilin. Methods were challenged with toxic shellfish extracts prepared according to the AOAC official method. The best correlations between predicted toxicity values being 0.9 or better, were those between HPLC analysis when compared with both radioreceptor assays and the mouse lethality bioassay, as well as that between the saxiphilin and the sodium channel radioreceptor assays. In all cases, statistically significant correlations existed between the toxicity measurements of the same extracts. The ratios between some methods were not unitary as measured by the slopes of the regression lines used for correlation analyses. HPLC analysis predicted more toxicity than all of the bioassays. The saxiphilin assay underestimated toxicity relative to the mouse bioassay, the MIST® kit determinations and the sodium channel assay. The sodium channel assay predicted there to be less toxicity than the mouse bioassay and the MIST® kit. Of all of the techniques used, the MIST® kit correlation with the mouse bioassay was nearest to one. Each method possesses different virtues and it may be that a multi-method approach would harness the benefits of each method for various aspects of a shellfish testing regime.","PeriodicalId":12310,"journal":{"name":"Food Additives & Contaminants","volume":"71 1","pages":"970 - 980"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90299266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Natural co-occurrence of aflatoxin and cyclopiazonic acid in peanuts grown in Argentina 黄曲霉毒素和环吡唑酸在阿根廷花生中自然共存

Food Additives & Contaminants Pub Date : 2001-11-01 DOI: 10.1080/02652030110057125

V. F. Pinto, A. Patriarca, O. Locani, G. Vaamonde

引用次数: 61

Effect of fermentation on naturally occurring deoxynivalenol (DON) in Argentinean bread processing technology 发酵对阿根廷面包加工工艺中自然产生的脱氧雪腐镰刀菌醇(DON)的影响

Food Additives & Contaminants Pub Date : 2001-11-01 DOI: 10.1080/02652030110051284

M. M. Samar, M. S. Neira, S. Resnik, A. Pacin

引用次数: 74

Aflatoxin M 1 contamination in commercial samples of milk and dairy products in Kuwait 科威特商业牛奶和奶制品样本中的黄曲霉毒素m1污染

Food Additives & Contaminants Pub Date : 2001-11-01 DOI: 10.1080/02652030110050357

V. P. ivastava, A. Bu-Abbas, W. Al-Johar, S. Al-Mufti, M. Siddiqui

{"title":"Aflatoxin M 1 contamination in commercial samples of milk and dairy products in Kuwait","authors":"V. P. ivastava, A. Bu-Abbas, W. Al-Johar, S. Al-Mufti, M. Siddiqui","doi":"10.1080/02652030110050357","DOIUrl":"https://doi.org/10.1080/02652030110050357","url":null,"abstract":"As part of the programme on monitoring of environmental contaminants in food stuffs in Kuwait, 54 samples of fresh full cream and skimmed milk, powdered milk, yoghurt, and infant formula were analysed for aflatoxin M1 (AFM 1) by HPLC following sample clean up using immuno-affinity columns. Of samples, 28% were contaminated with AFM 1 with 6% being above the maximum permissible limit of 0.2 μg l -1. Three fresh cow milk samples collected from a private local producer showed the highest level of 0.21 μg l -1 AFM1. There was no contamination with AFM 1 in powdered milk and infant formulas. These results show the necessity of a survey involving a larger number of milk and its products and suggest that presently the contamination of milk and milk products with AFM 1 does not appear to be a serious health problem in Kuwait. Nevertheless, a continuous surveillance programme may be warranted to monitor regularly the occurrence of aflatoxins in the animal feeds responsible for current limited contamination and to note rapidly any worsening in the situation that may depend on market changes or on unfavourable climatic developments.","PeriodicalId":12310,"journal":{"name":"Food Additives & Contaminants","volume":"45 1","pages":"993 - 997"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78934065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 71

Determination of permeation parameters of experimental PET films coated with SiO x to ethyl acetate, oxygen and water vapour 实验用SiO x包覆PET薄膜对乙酸乙酯、氧和水蒸气渗透参数的测定

Food Additives & Contaminants Pub Date : 2001-11-01 DOI: 10.1080/02652030110054768

A. Adamantiadi, A. Badeka, M. Kontominas

引用次数: 5

Estimation of dietary intake of pesticide residues by the Italian population during 1997 1997年意大利人口对农药残留膳食摄入量的估计

Food Additives & Contaminants Pub Date : 2001-10-01 DOI: 10.1080/02652030118128

I. Camoni, R. Fabbrini, L. Attias, A. Muccio, E. Cecere, A. Consolino, F. Roberti

引用次数: 12

Method validation for strobilurin fungicides in cereals and fruit 谷物和水果中酯脲类杀菌剂的方法验证

Food Additives & Contaminants Pub Date : 2001-10-01 DOI: 10.1080/02652030121435

H. Christensen, K. Granby

{"title":"Method validation for strobilurin fungicides in cereals and fruit","authors":"H. Christensen, K. Granby","doi":"10.1080/02652030121435","DOIUrl":"https://doi.org/10.1080/02652030121435","url":null,"abstract":"Strobilurins are a new class of fungicides that are active against a broad spectrum of fungi. In the present work a GC method for analysis of strobilurin fungicides was validated. The method was based on extraction with ethyl acetate/cyclohexane, clean-up by gel permeation chromatography (GPC) and determination of the content by gas chromatography (GC) with electron capture (EC-), nitrogen/phosphorous (NP-), and mass spectrometric (MS-) detection. Three strobilurins, azoxystrobin, kresoxim-methyl and trifloxystrobin were validated on three matrices, wheat, apple and grapes. The validation was based on recovery tests at three or four spiking levels, determined as double determinations and repeated three times (n = 6). The mean recoveries for the three detectors were in the range of 70-114%, and the LODs were between 0.004mg/kg and 0.014mg/kg, for all three strobilurins. The values for repeatability and reproducibility were within the limits for repeatability and reproducibility given by the Horwitz equation. Validation was not accepted for azoxystrobin in grapes on all three detectors and for azoxystrobin in apple for the MS-detector. A comparison of matrix-matched standards versus standards in solvent showed varying differences","PeriodicalId":12310,"journal":{"name":"Food Additives & Contaminants","volume":"271 1","pages":"866 - 874"},"PeriodicalIF":0.0,"publicationDate":"2001-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79918390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 41