检索结果-南通市图书馆

Fraud investigation in commercial coffee by chromatography

Food Quality and Safety 2018年第3期2卷 121-133页

作者： Víctor de Carvalho Martins Ronoel Luiz de Oliveira Godoy Ana Cristina Miranda Senna Gouvêa Manuela Cristina Pessanha de Araujo Santiago Renata Galhardo Borguini Elaine Cristina de Oliveira Braga Sidney Pacheco luzimar da silva de mattos do nascimento departamento de Tecnologia de Alimentos Instituto de TecnologiaUniversidade Federal Rural do Rio de JaneiroCEP 23890-000Seropédica-RJBrazil Laboratório de Cromatografia Líquida Embrapa Agroindústria de AlimentosCEP 23020-470Rio de Janeiro-RJBrazil Centro de Tecnologia Instituto de QuímicaUniversidade Federal do Rio de JaneiroCEP 22290-180Rio de Janeiro-RJBrazil

Coffee is currently the second largest commodity on the world market today,and there is great concern about the quality of the beans exported from producer countries to Europe and *** such as using blends of different species and adding low-cost raw materials,such as chicory,corn,and soybean,impair the sensory and functional characteristics of the drink made from roasted and ground coffee *** is a need to adopt more efficient analytical methods than the microscopy technique currently *** first chromatographic method used to determine fraud was reported in *** method used paper chromatography to differentiate between coffee and chicory based on the free reducing *** of the 1980s,different methods involving high-performance liquid chromatography and gas chromatography were developed in order to demonstrate geographic authenticity,distinction between species,occurrence of adulteration,and the presence of defective beans by determining the monosaccharides,oligosaccharides,tocopherols,fatty acids,volatiles,diterpenes,sterols,and phenolic substances,among *** far as the authors know,there are no papers published in the literature that have compiled such an extensive set of information about these chromatographic methods as *** the last 2 years,there has been a trend to develop analytical methods for ultra-performance liquid chromatography coupled with tandem mass spectrometry to confirm fraud in coffee,due to high sensitivity and selectivity.

关键词： adulteration coffee chromatographic methods carbohydrates volatile substances

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Serological evidence of Toxoplasma gondii infection as potential risk for the development of lepromatous leprosy in an endemic area for both neglected tropical diseases in Brazil

引用

Infectious Diseases of Poverty 2020年第1期9卷 36-45页

作者： Luciana Regina Pereira Oliveira Lívia mattos Martins Rebeka da Conceição Souza Yuri Scheidegger de Castro Letícia silva nascimento Juliana Azevedo da silva Edilbert Pellegrini Nahn Junior Wilmar Dias da silva Alba Lucínia Peixoto-Rangel Laboratory of Recognition Biology Center of Biosciences and BiotechnologyState University of Northern Rio de JaneiroCampos dos GoytacazesRJBrazil Campos Medical School Campos dos GoytacazesRJBrazil Laboratory of Immunochemistry Butantan InstituteSão PauloSPBrazil

Background:Mycobacterium leprae and Toxoplasma gondii infections are both neglected tropical diseases highly prevalent in *** with certain parasite species can significantly alter susceptibility to other important pathogens,and/or influence the development of *** we investigated the possible influence of ***/*** co-parasitism on the manifestation of leprosy and its clinical ***:Participants(n=291)were recruited in Campos dos Goytacazes city,Rio de Janeiro state,southeast Brazil,from August 2015 to december 2019 and clinically diagnosed for *** were selected based on the presence(patients)or absence(healthy controls)of the leprosy *** of patients were also recruited for this *** samples from patients(n=199)with leprosy,contacts(n=40)and healthy controls(n=52)were investigated for levels of IgM and IgG anti-phenolic glycolipid-1(PGL-1)by ***,IgG antibody against soluble Toxoplasma antigen(STAg)was measured in sera samples from leprosy patients,contacts and healthy controls for Toxoplasma gondii serology by ***-PGL-1 IgG and IgM levels were compared using one-way ANOVA Kruskal-Wallis or Mann-Whitney,while Spearman test was used to correlate levels of IgG anti-STAg and IgM/IgG anti-PGL-1 from seropositive and seronegative individuals for *** *** risk of *** infection for leprosy disease was assessed using Fisher’s ***:Levels of IgM anti-PGL-1 antibodies were significantly higher in multibacillary(MB)patients compared to paucibacillary(PB)patients(P=0.0068).Higher IgM and IgG levels anti-PGL-1 were detected in patients with the lepromatous *** serologic prevalence for *** infection was 74.9%.We detected increased anti-STAg antibody levels in leprosy patients(79.4%),reaching 88.8%within those with lepromatous form of this *** leprosy risk increase in *** seropositive individuals was two-fold(odds ratio[OR]=2.055;95% c

关键词： Leprosy Toxoplasmosis Coinfection Co-immunomodulation Immunoglobulins Immune response

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Clinical hematological and biochemical parameters in Swiss,BALB/c,C57BL/6 and B6D2F1 Mus musculus

引用

Animal Models and Experimental Medicine 2020年第4期3卷 304-315页

作者： Giorgio silva-Santana Juliet Cunha Bax Débora Cristina silva Fernandes daniela Tendler Leibel Bacellar Cleber Hooper Alexandre Alves Souza Oliveira Dias Cristina Barbosa silva Aline Moreira de Souza Simone Ramos Ricardo Alexandre Santos Thainara Ramos Pinto Mariana Antunes Ramão Ana Luíza mattos-Guaraldi Health Sciences Center Institute of Microbiology Paulo de GóesFederal University of Rio de JaneiroRio de JaneiroRJBrazil Laboratory of Diphtheria and Corynebacteria of Clinical Relevance Faculty of Medical SciencesUniversity of the State of Rio de JaneiroRio de JaneiroRJBrazil The Collaborating Centre for Reference and Research on Diphtheria/National Health Foundation/Ministry of Health Rio de JaneiroRJBrazil Laboratory of Clinical Research and Molecular Diagnostic Prof.Marcílio Dias do nascimento Department of Clinical Practice and PathologyFluminense Federal UniversityNiteróiRJBrazil Laboratory Bacterial Vaccines Department of ImmunologyNational Institute for Quality Control in HealthOswaldo Cruz FoundationRio de JaneiroRJBrazil Institute of Science and Technology in Biomodels Oswaldo Cruz FoundationRio de JaneiroRJBrazil Institute of Biology Federal Fluminense UniversityNiteróiRJBrazil Biomedical Center College of Medical SciencesUniversity of the State of Rio de JaneiroRio de JaneiroRJBrazil

Background:Animal models are widely used in scientific research in order to obtain information from a whole organism under a specific set of experimental *** lineages of mice have been used to investigate diseases and new therapeutic strategies,and,consequently,hematological and biochemical tests in these laboratory animals are essential to validate scientific *** study seeks to establish reference values for hematological and biochemical parameters of four lineages of ***:We evaluated the hematological and biochemical profiles of 20 males and 20 females from the lineages Swiss(heterogeneous),BALB/c and C57BL/6(isogenic),and B6D2F1(hybrid),totaling 160 *** were standardized using the systems pocH-100iV Diff™for 19 hematological parameters and VITROS®350 for 12 biochemical ***:Results are shown as means and standard deviation,grouped by lineage and *** the values obtained in this study with the values from previous studies,some variations were detected,which could be explained by differences in methodologies or individual ***:Thus our study shows that knowledge and disclosure of the values of physiological parameters of laboratory animals is necessary,and emphasises the importance of considering variations influenced by gender,lineage and genotype in the choice of the best experimental model.

关键词： B6D2F1 BALB/c biochemical C57BL/6 hematological Swiss

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：