检索结果-南通市图书馆

Physicochemical and Chromatographic Profiles of Distilled Sugarcane Spirits Produced in Mozambique

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2018年第4期9卷 617-627页

作者： manuel Carlos Minez Tábua maria das Gracas Cardoso Wilder Douglas santiago Gustavo da Silva Goncalves Richard Bispo Barbosa Allan da Silva Lunguinho Renan Elan da Silva Oliveira Gabriel Biscotto d’Avila maísa lamounier magalhaes David Lee Nelson Department of Chemistry Federal University of LavrasLavrasMGBrazil Department of Food Science Federal University of LavrasLavrasMGBrazil Pro-Reitoria de Pesquisa e Pós-Graduacao Federal University of Vales de Jequitinhonha and MucuriDiamantinaMGBrazil

Knowledge of the chemical composition of Mozambican spirits is extremely important because the studies of potentially toxic compounds have been a determinant factor in quality control. The objectives of this work were to analyze and physicochemically characterize distilled sugarcane spirits and other raw materials from Mozambique on the basis of the standards established by the Brazilian Ministry of Agriculture, Livestock and Food Supply (maPA). The samples came from five provinces of southern and central Mozambique, provided by the owners of the stills in the localities of manhica, Xinavane, Chókwe, massinga, mafambisse, Beira and Chimoio. The four samples from Brazil were randomly collected from different regions of Minas Gerais. The parameters analyzed were ethanol, methanol, higher alcohols, aldehydes, volatile acidity, furfural, esters and copper concentrations. The Mozambican spirits produced from different raw materials, compared to Brazilian spirits, contained very variable concentrations of the components analyzed. Mozambican spirits are of much lower quality than Brazilian beverages and are not suitable for consumption.

关键词： Mozambican Liquor Quality Distilled Alcoholic Beverages

Essential Oils from the Leaves and Flowers of Callistemon viminalis:Chemical Characterization and Evaluation of the Insecticide and Antifungal Activities

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2017年第10期8卷 2516-2529页

作者： Thais Aparecida sales maria Das Gracas Cardoso Luiz Gustavo De Lima Guimaraes Karen Caroline Camargo Danúbia Aparecida De Carvalho Selvati Rezende Rafaela magalhães Brandao Rafaela Vieira Souza Vanúzia Rodrigues Fernandes Ferreira Ana Ermelinda marques maísa lamounier magalhaes David Lee Nelson epartment of Chemistry Federal University of LavrasLavrasBrazil Department of Natural Science Federal University of Sao Joao Del ReiSao Joao Del ReiBrazil Department of Food Science Federal University of LavrasLavrasBrazil Pro-Reitoria de Pesquisa e Pós-Graduacao Federal University of the Jequitinhonha and Mucuri ValleysDiamantinaBrazil

The chemical compositions of the essential oils from the leaves and flowers of Callistemon viminalis and their insecticide and fungitoxic activities were determined. The essential oil was extracted by the hydrodistillation method using a modified Clevenger apparatus. The chemical characterization was performed by GC-MS and GC-FID. The evaluation of the insecticidal activity was performed with the Myzus persicae aphid, and the antifungal potential was determined via the inhibition of the mycelial growth of Alternaria alternata, Fusarium oxysorum and Botrytis cinérea phytopathogenic fungi. The principal components of the essential oils from the leaves and flowers were eucalyptol (84.60% and 61.47%), α-pinene (10.28% and 21.48%) and α-terpineol (2.59% and 2.79%), respectively. The use of a 0.5% concentration of the essential oil from the flowers influenced the preference of aphids and their reproduction. The number of adult aphids decreased within a period of 48 hours in the presence of the essential oil from the leaves. In the test with no chance of choice, the mean number of adults decreased with both oils within 48 hours. No inhibition of the mycelial growth of the A. alternate microorganism was observed in any of the treatments with the two essential oils. However, the growth of F. oxysporum and B. cinerea fungi was inhibited. The mycelial growth of F. oxysporum was inhibited with the concentration of 100 μL·Lˉ1 of the oil from the flowers and 250 μL·Lˉ1 of the oil from the leaves. The inhibition of the growth of B. cinerea was observed at concentrations of 500 and 100 μL·Lˉ1 for the oils from the flowers and leaves, respectively. The essential oils presented insecticidal and antifungal potentials. However, further studies are needed for these oils to be used in integrated pest management.

关键词： Myzus persicae Biological Activity Phytopathogenic Fungi Natural Products

saccharification of Sugarcane Bagasse Using an Enzymatic Extract Produced by Aspergillus fumigatus

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Renewable materials 2018年第2期6卷 169-175页

作者： Kenia F.R.lamounier Patrisia O.Rodrigues Daniel Pasquini Milla A.Baffi Institute of Agricultural Sciences Federal University of Uberlândia(UFU)UberlândiaMG38408-100Brazil Chemistry Institute Federal University of Uberlândia(UFU)UberlândiaMG38408-100Brazil

This study investigates the efficiency of a crude enzymatic extract produced by Aspergillus fumigatus SCBM6 by solid state fermentation(SSF)in the hydrolysis of alkali pretreated sugarcane bagasse(PTB).After SSF using in natura sugarcane bagasse(SCB),the enzymatic extract presented 21.33 U.g^-1 of β-glucosidase and 544.46 U.g^-1 of *** alkaline pretreatment with sodium hydroxide 2%NaOH(w/v)removed 43% of the lignin from PTB and the cellulosic fraction increased to 75%.The hydrolysis was optimized as a function of time,temperature,and concentration of *** hydrolysis,the maximum yield(30.05%)of total released reducing sugars(TRS)was obtained under the following conditions:24 h,55℃,2% of PTB and 3 U.g^-1 of β-glucosidase(CBU).Furthermore,an approximate TRS value(26.4%)was also obtained after saccharification carried out during 6 h,55℃,4% of PTB and 1 *** results indicate that hydrolysis can be performed in a short incubation period and with low enzymatic load for reasonable TRS release.

关键词： A.fumigatus enzymatic hydrolysis sugarcane bagasse alkaline pretreatment solid state fermentation

Essential Oils from Mentha piperita,Cymbopogon citratus,Rosmarinus officinalis,Peumus boldus and Foeniculum vulgare:Inhibition of Phospholipase A_(2) and Cytotoxicity to Human Erythrocytes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2017年第9期8卷 2196-2207页

作者： Danubia Aparecida de Carvalho Selvati Rezende maria das Gracas Cardoso Rafaela Vieira Souza maria Luisa Teixeira Rafaela magalhaes Brandao Vanuzia Rodrigues Fernandes Ferreira Jéssica Oliveira e Nogueira maisa lamounier magalhaes Silvana marcussi David Lee Nelson Departamento de Química Universidade Federal de Lavras Lavras Brasil Departamento de Ciência dos Alimentos Universidade Federal de Lavras Lavras Brasil Universidade Federal do Vale do Jequitinhonha e Mucuri Diamantina Brasil

The essential oils from Mentha piperita, Cymbopogon citratus, Rosmarinus officinalis, Peumus boldus and Foeniculum vulgare were extracted by hydrodistillation and characterized and quantified by GC-MS and GC-DIC. The oils induced hemolysis with all the doses evaluated (0.6 to 1.8 μL), and the diameters of the halos varied between 9 and 15 mm. Pre-incubation of P. boldus oil with Bothrops jararacussu venom resulted in potentiation of venom-induced hemolysis (30%) (proteases and phospholipases A2). The essential oil from M. piperita (0.6 μL) inhibited venom-induced hemolysis by 45%, whereas 0.6 μL of R. officinalis oil increased the hemolysis by 20%. For the essential oil from F. vulgare, 100% inhibition of activity (0.6 and 1.2 μL) was observed. The application of C. citratus oil induced hemolysis with all the volumes evaluated. Phospholipase activity induced by the venom was only inhibited (10%) with the 0.6 μL volume of R. officinalis oil. The oils from M. piperita and F. vulgare (1.8 μL) and C. citratus oil (0.6 μL) potentiated the phospholipase activity. The results highlight the need for a broad characterization and regulation of the use of natural products, because they can have therapeutic or toxic actions.

关键词： Natural Products Snake Venoms Hemolysis Pharmacological Potential

Influence of Cold Storage on the Bioactivity Properties and the Quality of the Juice of Moro Blood Orange(Citrus sinensis(L.)Osbeck)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2019年第1期10卷 24-37页

作者： maisa lamounier magalhaes Luiz Carlos De Oliveira Lima Allan da Silva Lunguinho Danubia Aparecida De Carvalho Selvati Rezende Vanuzia Rodrigues Fernandes Ferreira Rafaela magalhaes Brandao Josefina Aparecida De Souza Ellen Cristina De Souza Kátia Júlia De Almeida David Lee Nelson maria Das Gracas Cardoso Departamento de Ciencia dos Alimentos Universidade Federal de Lavras(UFLA)LavrasBrazil Departamento de Química Universidade Federal de Lavras(UFLA)LavrasBrazil Programa de Pos-Graduacao em Biocombustívis Universidade Federal do Vale do Jequitinhonha e MucuriDiamantinaBrazil

The possibility of commercialization of Moro blood oranges in tropical countries such as Brazil was evaluated to verify whether post-harvest management through storage at low temperatures for a period of 60 days can improve the bioactive properties and quality parameters. Moro blood oranges cultivated in Brazil did not contain significant amounts of anthocyanins at the time of harvesting, but these compounds were activated by post-harvest management through storage at low temperatures (4°C and 8°C) for a period of 60 days. The emergence of the anthocyanins in the juices occurred within a few weeks of storage, but the maximum levels were attained after 60 days and at the temperature of 8°C. Cold storage positively influenced other bioactive compounds such as total phenolic compounds, individual phenolic compounds, β-carotene and the antioxidant activity determined by the sequestration of DPPH free radicals. It did not influence the vitamin C content. In addition, storage significantly altered the color, total acidity and pH of the fruits, but it did not prevent its commercial use. The remaining quality parameters were not influenced. It is possible to commercialize these oranges in Brazil through post-harvest management.

关键词： Cyanidin-3-Glycoside Antioxidant Post-Harvest

Antimicrobial Activity of the Essential Oil from Hyptis carpinifolia Benth

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2017年第11期8卷 2871-2877页

作者： Karen Caroline Camargo Luís Roberto Batista Paulo Estevao de Souza maria Luisa Teixeira Thaís Aparecida sales Vanuzia Rodrigues Fernandes Ferreira Jéssica Oliveira e Nogueira maísa lamounier magalh?es Alex Rodrigues Silva Caetano David Lee Nelson maria das Gra?as Cardoso Department of Chemistry Federal University of Lavras Lavras Brazil Department of Food Science Federal University of Lavras Lavras Brazil Department of Phytopathology Federal University of Lavras Lavras Brazil Pro-Rectory of Research and Graduate Studies Federal University of the Jequitinhonha and Mucuri Valleys Diamantina Brazil

Essential oils are secondary metabolites whose biological properties have been studied with emphasis on antimicrobial activity. Hyptis carpinifolia Benth (Rosmaninho) is used in folk medicine in the fight against colds and rheumatism. The objective of this study was to evaluate the antimicrobial activity of the essential oil from H. carpinifolia. The essential oil was extracted by hydrodistillation using a modified Clevenger apparatus. The biological activity was determined using the Agar Cavity Diffusion technique to evaluate the effect of concentrations of 500, 250, 125, 62.5, 31.25, 15.62, 7.81 and 3.9 μg·mL-1 on the bacteria Escherichia coli, Listeria monocytogenes, salmonella Choleraesuis, Staphylococcus aureus and Pseudomonas aeruginosa. The fungicidal potential was evaluated by the method of dilution in agar, and the percentage inhibition of mycelial growth of Alternaria alternata, Botrytis cinerea and Fusarium oxysporum was evaluated. The dilutions tested were 1000, 750, 500, 250 and 100 μL·L-1. The minimum inhibitory concentrations (MIC) of the essential oil for L. monocytogenes, S. aureus and E. coli were 31.25;15.62 and 62.5 μg·mL-1, respectively. The MIC was 500 μg·mL-1 for salmonella Choleraesuis and P. aeruginosa. The percentage inhibitions of mycelial growth of B. cinerea and A. alternate were 67% and 33%, respectively, at the dilution of 750 μL·L-1. The essential oil inhibited about 48% of the mycelial growth of F. oxysporum, at the dilution of 1000 μL·L-1. The essential oil of H. carpinifolia presented biological activity against all the microorganisms evaluated.

关键词： Essential Oils Antimicrobial Activity

Relationship between Overweight and Dietary Patterns in Brazilian Preschoolers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food and Nutrition Sciences 2017年第6期8卷 598-612页

作者： Luciana Neri Nobre Angelina do Carmo Lessa Joel Alves lamounier Sylvia do Carmo Castro Franceschini Department of Nutrition Universidade Federal dos Vales do Jequitinhonha e Mucuri Diamantina Brazil Department of Paediatrics Universidade Federal de Minas Gerais Belo Horizonte Brazil Department of Nutrition Universidade Federal de Vicosa Vicosa Brazil

Background/Objectives: The prevalence of overweight in children is a growing health problem. The aim of this study was to investigate the relationship between overweight and dietary patterns in preschoolers. Methods: In total, 232 preschoolers (age 5) residing in the city of Diamantina, Brazil, were evaluated. Dietary intake from a food frequency questionnaire, anthropometric parameters and socioeconomic/behavioral information from a questionnaire were evaluated using a cross-sectional design. Dietary patterns were identified using principal component analysis, and the relationship between overweight and dietary patterns was examined by logistic regression analysis. Results: “Mixed diet”, “snack” and “unhealthy” dietary patterns were identified. Children daughters of obese mothers, and those who had higher average weight gain in the first four months of life had a significantly higher chance of being overweight (respective values: OR = 3.81;p = 0.002;and OR = 2.97;p = 0.009). Higher levels of maternal education were associated with higher “mixed diet” scores (p maternal education (p < 0.001), higher per capita income (p < 0.001) and higher average weight gain from 0 to 4 months (p = 0.002) were associated with higher “snack” scores. Higher per capita income was also associated with lower “unhealthy” scores (p Conclusions: In the present study, overweight was not associated with dietary pattern. However, unhealthy eating habits are known to be risk factors for overweight, and considering that eating habits are formed in childhood, it is very important that healthy eating be encouraged in the family environment and in other spaces like childcare and school.

关键词： Dietary Patterns Nutritional Assessment Overweight Childhood Dietary Intake

Drinking Water as Iron Carrier for the Prevention of Iron Deficiency Anemia:The Brazilian Experience

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Water Resource and Protection 2013年第9期5卷 854-858页

作者： Jose E.Dutra-de-Oliveira Júlio S.marchini Joel lamounier Carlos A.N.de Almeida Department of Internal Medicine Ribeirao Preto School of MedicineUniversity of Sao PauloRibeirao PretoBrazil Department of Pediatrics Medical School Belo HorizonteBelo HorizonteBrazil Department of Pediatrics Ribeirao Preto School of MedicineUniversity of Ribeirao PretoRibeirao PretoBrazil

On a global base, estimated 2 billion people are iron deficient and/or anemic with small children and child bearing age most likely to be the ones affected. These high levels of world anemia prevalence have been maintained and even growing in spite of the global and national food fortification programmes carried out in several places. These have been based on the iron fortification of local foods. In Brazil a wheat flour iron fortification program has been going on for several years and the anemia prevalence has been going on as a still large public health problem. We started since the nineties and in several under five day care centers, in various part of Brazil a new program using drinking water as the iron carrier for the prevention of iron deficiency anemia. It was shown through several studies in different places in Brazil that drinking water being available everywhere, daily consumed by everyone, children, adults and old people have shown to be effective for the prevention of iron anemia. Iron salts are low-priced, water soluble, effective, easily and locally prepared, should be known and accepted as a rational, practical and effective locally community preventive solution for iron anemia, still a great problem of our developing and underdeveloped countries of the world.

关键词： Iron Anemia Iron Carrier Control Anemia Drinking Water Fortification Community Studies and Support

Stable isotopes and body composition in children: History, fundamentals, and clinical applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Health 2013年第8期5卷 61-68页

作者： Wendell Costa Bila Joel Alves lamounier Andre Everton de Freitas Valmin Ramos Silva Sylvia Dias Turani Jose Eduardo Dutra de Oliveira Graduate Program in Health Sciences Federal University of Sao Joao Del Rei-West Campus CenterDivinopolisBrazil Graduate Program in Child and Teenager Health-Medicine School-UFMG Belo Horizonte College of Health and Human Ecology-FASEH VespasianoBrazil Faculty of Medicine School of Sciences of Santa Casa de Misericordia of VitoriaNossa Senhora da Gloria Children’s HospitalVitoriaBrazil Faculty of Medicine Federal University of Sao Joao Del Rei-West Campus CenterDivinopolisBrazil Faculty of Medicine University of Sao Paulo-Ribeirao PretoBrazil

The aim of this study was to gather information on the use of stable isotopes to measure total body water and body composition scan in children. We selected studies in the last 13 years, in addition to classical studies on the subject, indexed in the database PubMed, LILACS, BVS and SciELO. The body composition was characterized by the amount of bone tissue, muscle and adipose tissue, also including the organs as well as levels of body water. Your knowledge becomes increasingly important in light of the changes that occur in the nutritional status of various types of diseases in frameworks, such as diabetes mellitus, protein energy malnutrition, in cases of obesity and metabolic syndrome. The ability to accurately assess body fat mass especially in children is associated with the importance of effective strategies for prevention and treatment of childhood obesity. Historically, in addition to clinical applications, measurements of total body water were used to determine body composition in nutritional studies. To the knowledge of the body composition, the body water can be measured and used by the ingestion of a dose of labeled water. The measured isotope enrichment is a function of the amount of body water. The method of deuterium is particularly interesting for the assessment of body composition in children, due to its characteristics of collection and analysis.

关键词： Body Water Deuterium Body Composition Doubly Labeled Water Obesity Children