Amines in Fish Muscle: I. Colorimetric Determination of Trimethylamine as the Picrate Salt

Dyer, W. J.

doi:10.1139/f42-042

Cited by 200 publications

(87 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This reagent, otherwise used for the determination of phenols, gives a blue color with TMA (8) but not with ammonium, mono-or dimethylamine salts. Since the phenols of the urine are not aerated under the experimental conditions, the color reaction can be considered specific for TMA.…”

Section: Methodsmentioning

confidence: 99%

Urinary Excretion of Choline Metabolites Following Choline Administration in Normals and Patients With Hepatobiliary Diseases 1

Huerga¹,

Pópper²

1951

J. Clin. Invest.

119

View full text Add to dashboard Cite

Choline has been recommended for the treatment of hepatic diseases, especially those of nutritional origin, and for the prevention of arteriosclerosis. Little is known of its fate after oral or intravenous administration. A recent Spanish report (1) that patients with liver diseases and dogs with experimental hepatic damage excrete in the urine considerably more than normal of a substance precipitated by Reinecke salt (and considered as choline by the authors) after large doses of choline given orally, suggested that the utilization of choline might be altered in hepatobiliary disease. In addition, studies with radiophosphorous (2) indicate a reduced rate of phospholipid formation in the presence of hepatocellular damage and an increased rate in biliary obstruction, suggesting that less choline might appear in the urine than normal in obstructive jaundice and more than normal in liver cell damage.To test these hypotheses and to investigate the fate of choline after its oral adrministration 1 ) the identity of the reineckate precipitated from the urine was determined, and 2) the influence upon its excretion of physiologic conditions as well as hepatobiliary diseases was studied. MATERIALFour normal subj ects and 22 patients with various hepatobiliary diseases were given on separate occasions single doses of choline bicarbonate3 equivalent to 2-8 grams of choline base (230-920 mg. choline N). Their diets were not controlled. Urine samples, collected at various intervals, were preserved with 25 ml. of concentrated hydrochloric acid (diluted with equal parts of water) per liter of urine.

show abstract

Section: Methodsmentioning

confidence: 99%

Urinary Excretion of Choline Metabolites Following Choline Administration in Normals and Patients With Hepatobiliary Diseases 1

Huerga¹,

Pópper²

1951

J. Clin. Invest.

119

View full text Add to dashboard Cite

show abstract

“…Regarding color, morphological and biochemical differences are observed between two types of muscles, ordinary (white) and blood (red), being morphologically characterized as: ordinary muscle presenting large muscle fibers, large proportion of myofibril/ sarcoplasm, a few external and internal membranes and scattered distribution of blood vessels; blood muscle characterized by being composed of small muscle fibers, a small proportion of myofibril/ sarcoplasm, many external and internal membranes and compact distribution of blood vessels. Biochemically the red muscle has a higher proportion of sarcoplasmic protein, high glycogen and stroma content, higher lipids, taurine (sulfonic amino acid), iron, extractive nitrogen (mainly histidine) compared to the ordinary muscle (Dyer 1945, Stansky 1962.…”

Section: Resultsmentioning

confidence: 99%

The use of fish in Ilhabela (São Paulo/Brazil): preferences, food taboos and medicinal indications

2012

View full text Add to dashboard Cite

This study was conducted in three communities of artisanal fishermen from Ilhabela, located on the northern coast of São Paulo, Brazil. The objective was to analyze the preferences, taboos and medicinal indications of fish and thus representing one of the interactions of fishermen with fish stocks. Data collection was conducted through interviews with the aid of semi-structured questionnaires. We interviewed 25 families, 29 residents in three communities studied during our fieldwork for data collection. Five interviews were done in Jabaquara Beach, 6 in Fome Beach and 14 Serraria Beach. During the interviews, 18 species were cited as preferred for consumption, 11 species considered to be taboo (food prohibited), 5 species were cited as avoided as food, and 4 species indicated in case of illness. The families of fishermen prefer to consume finfish and do not consume puffer fish, the latter probably due to its toxic characteristic. Fish such as little tunny, largehead hairtail, shark, serra mackerel and king mackerel are avoided by unhealthy people and in cases of wounds, inflammation, pregnancy and postpartum. Other fish, such as sea chubs, silver porgy, bluefish and grouper are reported as medicinal in these situations. Aspects related to fish consumption are part of the knowledge of fishermen and their families and provide a wealth of information that combined to biological information is useful for the conservation of fishery resources. Data such as those presented in this study, regarding the use of aquatic animals for treatment of diseases, could serve as a basis for future studies on substances that contain active elements in curing diseases. Resumo: Este trabalho foi realizado em três comunidades de pescadores artesanais de Ilhabela, localizadas no litoral norte do Estado de São Paulo, Brasil. O objetivo foi analisar as preferências, os tabus e as indicações medicinais dos peixes e, desta forma, representar as interações dos pescadores com os recursos pesqueiros, visando entender os aspectos biológicos e culturais envolvidos. A coleta dos dados foi realizada através de entrevistas com o auxílio de questionários semi-estruturados. Foram entrevistadas 25 famílias, das 29 residentes nas três comunidades estudadas durante a coleta de dados, sendo que 5 delas foram realizadas na Praia do Jabaquara, 6 na Praia da Fome e 14 na Praia da Serraria. Foram citadas 18 consideradas preferidas para o consumo, 11 espécies consideradas como tabus, 5 espécies evitadas e 4 indicadas no caso de doenças. As famílias de pescadores preferem consumir peixes de escama e não consomem o baiacu, este último provavelmente devido a sua característica tóxica. Peixes como bonito, espada, cação, sororoca e cavala são evitados em casos como feridas, inflamações, gravidez e pós parto e outros como pirajica, marimba, anchova e garoupa são indicados como peixes medicinais nestas situações. Aspectos relativos ao consumo de pescado fazem parte do corpo de conhecimento dos pescadores e suas famílias e constituem um acervo rico de infor...

show abstract

“…A amônia liberada foi coletada em solução de ácido bórico (Sigma) com indicadores e quantifi cada por titulometria com ácido clorídrico padronizado. Analisou-se a concentração de trimetilamina (TMA) colorimetricamente como picrato de TMA pelo método de Dyer (1945) …”

Section: Avaliação Químicaunclassified

AVALIAÇÃO DA QUALIDADE DE PESCADA AMARELA (Cynoscion acoupa) COMERCIALIZADA RESFRIADA UTILIZANDO O MÉTODO DO ÍNDICE DE QUALIDADE (MIQ), ANÁLISES QUÍMICAS E MICROBIOLÓGICAS

2014

View full text Add to dashboard Cite

Analisou-se a qualidade química e microbiológica da pescadaamarela (Cynoscion acoupa), proveniente de 14 pontos decomercialização das cidades de Santos, São Vicente e PraiaGrande, (litoral do Estado de São Paulo), e utilizou-se o Método doÍndice de Qualidade (MIQ) para avaliação sensorial do seu frescor.Amostras de pescada amarela obtidas de pescador artesanal nomesmo dia da captura também foram analisadas. As amostrasde pescada amarela obtidas no comércio apresentaram Índicesde Qualidade (IQ) variando de 2 a 23, indicando tempo provávelapós captura de 3 até 14 dias, respectivamente. Todos os peixesanalisados estavam livres de Salmonella sp. e Escherichia coli,e as contagens de Staphylococcus aureus enquadraram-senos limites estabelecidos pela legislação brasileira. Contagensde psicrotrófi cos acima de 7 Log UFC/g foram observadas em50 % dos peixes. Coliformes totais variaram de 2 Log UFC/g até7 Log UFC/g. Os valores de trimetilamina e bases nitrogenadasvoláteis encontrados foram maiores que os estipulados pelalegislação brasileira em 50 % e 65 % dos peixes, respectivamente.Tais resultados alertam sobre o baixo grau de frescor em quenormalmente essa espécie de peixe é oferecida no varejo e apontampara a necessidade de educar comerciantes e manipuladoressobre as condições adequadas de manuseio e armazenamentode peixes in natura a fi m de preservar ao máximo sua qualidade.

show abstract

Amines in Fish Muscle: I. Colorimetric Determination of Trimethylamine as the Picrate Salt

Cited by 200 publications

References 1 publication

Urinary Excretion of Choline Metabolites Following Choline Administration in Normals and Patients With Hepatobiliary Diseases 1

Urinary Excretion of Choline Metabolites Following Choline Administration in Normals and Patients With Hepatobiliary Diseases 1

The use of fish in Ilhabela (São Paulo/Brazil): preferences, food taboos and medicinal indications

AVALIAÇÃO DA QUALIDADE DE PESCADA AMARELA (Cynoscion acoupa) COMERCIALIZADA RESFRIADA UTILIZANDO O MÉTODO DO ÍNDICE DE QUALIDADE (MIQ), ANÁLISES QUÍMICAS E MICROBIOLÓGICAS

Contact Info

Product

Resources

About