检索结果-南通市图书馆

Organochlorine Pesticides in Infant Milk Formulas Marketed in the South of Mexico City

Food and Nutrition Sciences 2014年第13期5卷 1290-1298页

作者： Rey Gutiérrez Tolentino Salvador Vegay León beatriz schettino bermúdez Guadalupe Prado Flores María de Lourdes Ramírez Vega Claudia Radilla Vázquez María Radilla Vázquez Marcela Vazquez Francisca Departamento de Atención a la Salud Universidad Autónoma Metropolitana Unidad Xochimilco Coyoacán D.F. México Departamento de Producción Agrícola y Animal Universidad Autónoma Metropolitana Unidad Xochimilco Coyoacán D.F. México Puente de Piedra #150 Tlalpan D.F. México Universidad Autónoma Metropolitana México D.F. México

The nature of organochlorine pesticides (OCP) and their physical-chemical properties exert immediate action of control on live systems, which has justified their use in agricultural practices. Their long life makes them a persistent ecological aggressor and biomagnifier. They reach foods by biotic and abiotic means, and are absorbed and accumulate in adipose tissue. In lactation processes, they are excreted in milk through the mobilization of fats. Diverse studies have identified them as neurotoxic, affecting reproductive processes, altering the immunological response and act as endocrine disruptors. An analysis was made of the content of organochlorine pesticides in twenty-one samples of infant milk formulas marketed in the south of Mexico City in 2010. The determinations were made following the protocols of the International Dairy Federation, by means of gas chromatography with electron capture detector, and the majority presence was found of α-HCH (100%), β-HCH (95.2%), γ-HCH (90.5%), aldrin (85.7%), heptachlor (80.9%) and heptachlor epoxide (80.9%) with mean values of 0.24, 0.13, 0.32, 0.62, 0.92 and 0.18 μg/kg of fat, respectively;all below the limits permitted by the Codex Alimentarius. With null or lower recurrence and in lowerquantities, the family of DDT, endrin, endrin aldehyde and the endosulphanes were quantified.

关键词： Organochlorine Pesticides Infant Milk Formulas Gas Chromatography Mexico

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

Composition of Triacylglycerols in Fats of Cow and Goat Milk Produced in Four Zones of Mexico

引用

Food and Nutrition Sciences 2015年第6期6卷 555-561页

作者： Rey Gutié rrez Tolentino Salvador Vega y Leó n Mario Noa Pé rez Marta Coronado Herrera Acacia Ramí rez Ayala José Jesús Pé rez González beatriz schettino bermúdez Rutilio Ortiz Salinas Marcela Vazquez Francisca Juan Gabriel Rivera Martí nez Departamento de Producció n Agrí cola y Animal Universidad Aut&oacute noma Metropolitana-Xochimilco M&eacute xico D.F. M&eacute xico Departamento de Salud Pública Universidad de Guadalajara Guadalajara M&eacute xico Maestrí a en Ciencias Agropecuarias Universidad Aut&oacute noma Metropolitana-Xochimilco M&eacute xico D.F. M&eacute xico Departamento de Biologí a de la Reproducció n Universidad Aut&oacute noma Metropolitana-Iztapalapa M&eacute xico D.F. M&eacute xico

The study of the triacylglycerols (TAG) by gas chromatography (GC) using capillary columns is an efficient technique for the determination of some characteristics of quality of fats and oils. The objective of the present study was to determine by GC the content of TAG present in fat of cow and goat milk produced in four zones of Mexico. According to criteria established in Mexican Standardization, 25 samples were obtained of 1 L of ultra-pasteurized cow milk (UHT) and 27 and 48 of raw cow and goat milk, respectively. The fat was extracted from all of the milk samples by detergent solution, and was stored at –20℃ until its analysis. The chromatographic conditions made it possible to identify and quantify TAG of 28 to 54 numbers of carbons, which were analyzed under descriptive and inferential statistical techniques. For the cow milk fat, the statistical analyses indicated significant difference (p < 0.05) in the TAG C34, C50 and C52, and for the goat milk fat in the TAG of C36 to C52. No equality of means was found among the TAG of the cow and goat milk fat. This study offers an advance in the characterization of the TAG present in the cow and goat milk fat produced in Mexico.

关键词： Cow Milk Goat Milk Mexico Triacylglycerols

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

Proximate Composition,Fatty Acid Profile and Mycotoxin Contamination in Several Varieties of Mexican Maize

引用

Food and Nutrition Sciences 2017年第9期8卷 865-872页

作者： Silvia Denise Pena Betancourt Rey Gutiérrez Tolentino beatriz schettino Toxicology Laboratory Department of Agricultural and Animal Production Autonomous Metropolitan UniversityMexico CityMexico

In Mexico maize (Zea mays L.) is an important cereal due to excellent taste and nutritional value. Nutritional content and fatty acid profile has been reported in white maize, however, there are several genotypes natives (red, yellow, black, blue, pinto), and many improved hybrids maize of which little is known. Fumonisins and aflatoxins are mycotoxins present in 25% of the world’s cereals, mainly in tropical and subtropical regions around the world. This study presents the analysis of proximate composition (ash, protein, lipids), as well as mycotoxins (fumonisins and aflatoxins) and five different fatty acids, two of saturated fatty acids (palmitic and stearic) and three of polyunsaturated fatty acids (oleic, linoleic and linolenic), evaluated by Gas Chromatography and Flame Detector (GC-DF). Thirty varieties of maize (native and hybrid maize) were collected in states of central region. The total fumonisins were determined using the QuickTox TM extraction and quantificated by QuickScan fumonisins;the aflatoxins were analyzed by commercial ELISA kit. The highest protein level was 10.43 g/100g, 5.63 g/100g for fat, 1.62 g/100g for ash in hybrid maize. In native maize, the highest levels of protein and ash were 10.94 g/100g and 1.45 g/100g for pinto maize. The higher value for fat was 5.45 g/100g in yellow maize. The palmitic and stearic acids, in native maize were higher that hybrid maize, for linoleic acid and linoleinic fatty with a significant difference between native corn. Fumonisins and aflatoxins were contaminated in all genotypes of maize, in allow levels. This information obtained may be considered in maize breeding programs, industrialization processes and healthy diets.

关键词： Zea mays L. Fatty Acid Profile Fumonisins Aflatoxins Mexican Corn

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

Chia Seeds （Salvia hispanica L） Wild Plant Rich in Nutrients

引用

Journal of Life Sciences 2016年第5期10卷 221-227页

作者： Virginia Melo-Ruiz beatriz schettino-bermudez Jesris Rodriguez-Diego Rafael Diaz-Garcia ConcepcionCalvo-Carrillo Cesar Gazga-Urioste Biologic Systems Department Metropolitan Autonomous University Mexico City 04960 Mexico Agricultural and Animal Production Department Metropolitan Autonomous University Mexico City 04960 Mexico Health Care Department Metropolitan Autonomous University Mexico City 04960 Mexico

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

The Importance of Consuming Charales （Chirostomajordani） for Human Nutrition

引用

Journal of Life Sciences 2014年第1期8卷 42-45页

作者： Virginia Melo-Ruiz beatriz schettino-bermudez Karina Sanchez Herrera Nidia Vargas-Martinez Tomas Quirino-Barreda Jesus Juarez-Sandoval Biological and Health Sciences Department Metropolitan Autonomous University Mexico City PC 04960 Mexico

The diversity of existing food may decrease malnutrition through the consumption of underutilized species. In Mexico, the "charal" fish Chirostoma spp. is grouped in five species: Chirostoma grandocule, Chirostoma patzcuaro, Chirostoma humboltianum, Chirostoma attenuatum and Chirostoma jordani which live in lakes in the country, and they are not consumed or their demand is low. The objective of this research was to analyze the macronutrients of Chirostoma jordani charal and inform population their nutritional value to increase human nutrition. Sampling was provided at Xochimilco channels in Xochimilco, D. F., summer and winter seasons at 2009. Fish (200 g) were maintained in channels water for proximal analysis according AOAC methods (1995). The results in dry bases were: protein 74.36%, lipids 1.24%, fiber 0.27%, minerals 4.9%, and soluble carbohydrates 19.23%. This fish grants protein, plastic material essential for human development: its lipid and carbohydrate contents, sources of energy, are low; however, the excess of disseminated proteins increase the energy sources. Fiber is found in a minimum amount. Dehydrated charales may be stored without refrigeration up to 3 months, maintaining their nutritional value. Consumption of the charal should be considered in the basic diet for its nutritional properties, to diminish malnutrition in the Mexico and other countries.

关键词：营养不良人类发展消费可溶性碳水化合物碳水化合物含量营养价值蛋白质人体营养

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

Grasshoppers Sphenarium Purpurascens Ch Source of Proteins and Essential Amino Acids

引用

Journal of Chemistry and Chemical Engineering 2015年第7期9卷 472-476页

作者： Melo-Ruiz Virginia Quirino-Barreda Tomas Garcia-Nunez Maritza Diaz-Garcia Rafael Sanchez-Herrera Karina schettino-bermudez beatriz Departament of Biological Systems Universidad Autonoma Metropolitana-Xochimilco Mexico D. F. 04960 Mexico

Protein malnutrition is quite common worldwide; its deficiency has adverse effects in all organs. Edible insect"s traditional cultural food, commonly consumed in rural communities, now intake is also being incorporated in some countries. Grasshoppers comprise proteins, the building blocks of AA (amino acids), that are one of the five classes of complex biomolecules found in cells and tissues that play an important role in human metabolism and nutrition. This research was conducted to determine proximal composition of Sphenarium purpurascens Ch, grasshoppers, focused on proteins and AA. Sampling was performed during autumn, 2013, in Oaxaca State. Dry raw adult insects were ground and proceeded to macro molecules proximal analysis, protein by Kjeldahl AOAC (Association of Official Analytical Chemists) method and essential AA in a Beckman 6300 equipment. Obtained data were: total proteins 71.56%; lipids 8.14%; minerals 3.52%; fiber 7.48%; soluble carbohydrates 9.30%. Essential AA (mg/16 g·N): isoleucine 4.5; leucine 8.1; lysine 5.4; methionine + cysteine 5.1; phenylalanine + tyrosine 8.5; threonine 3.5; tryptophan 0.6; valine 5.5. Sphenarium purpurascens Ch, Grasshoppers represent a good source of proteins and essential AA that can grow almost everywhere, available mostly all year round and affordable to all social groups, thus being a good option to improve human health.

关键词：必需氨基酸蛋白质蚱蜢营养不良生物分子异亮氨酸分析化学家凯氏定氮法

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

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

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

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：