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| Registros recuperados: 109 | |
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| Funasaki,Mariko; Menezes,Ingrid Sabino; Barroso,Hiléia dos Santos; Zanotto,Sandra Patricia; Carioca,Cláudia Regina Ferreira. |
| The tocopherol content of Brazil nut oil from different Amazon regions (Manicoré-AM, Rio Preto da Eva-AM, São João da Baliza-RR, Caroebe-RR, Belém-PA, and Xapurí-AC) was investigated by normal-phase high-performance liquid chromatography. For all authentic oils, two isomers: α- and γ-tocopherols were observed (37.92-74.48 µg g-1, 106.88-171.80 µg g-1, respectively), and their levels were relatively constant among the oils having these geographic origins, which would enable to distinguish Brazil nut oil from other plant oils for authentication purposes. Commercial Brazil nut oils were also evaluated, and some of these oils demonstrated a tocopherol content that was very different from that of the authentic oils. Therefore, we suggest that the tocopherol... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bertholletia excelsa H.B.K.; Amazonian vegetable oil; Quality control; Authenticity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400012 |
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| ANSELMO,CARINA DE S.; MENDES,THAMARA C.; CABRAL,LUCIO M.; SOUSA,VALÉRIA P. DE. |
| Abstract Dietary supplements in many countries such as the USA do not require registration prior to commercialization. The Agência Nacional de Vigilância Sanitária (ANVISA) registers substances with functional properties as foods. Lutein is a carotenoid with antioxidant activity available on the market. However, no regulatory mandates exist to govern the design of quality control tests, which are necessary to ensure formulation effectiveness. Therefore, in the present study, tablet and dosage formulations from different manufacturers were tested following general methods outlined in the Brazilian and American Pharmacopeias. The averageweight, disintegration, content and dose uniformity assays were performed for all tablets and capsules, whereas hardness... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dietary supplements; Lutein; Quality control; Age-related macular degeneration. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000603063 |
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| Silva,R.C.S.N.; Minim,V.P.R.; Silva,A.N.; Carvalho,A.F.; Minim,L.A.. |
| The standardization of requeijão cheese quality characteristics is a processing stage which is directly influenced by the chemical composition of the raw material. Fat and water concentrations are the main factors that cause variation in quality properties of the requeijão and, when not thoroughly controlled, may cause a lack in standardization of the food. Calculations of ingredients for effective standardization must be made in relation to the final product through of iterative calculations, which makes the manual process unfeasible. Thus, the objective of the present study was to develop a spreadsheet for ingredient calculation, with restrictions being the different concentrations of fat and water in order to standardize the final products. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quality control; Calculation of ingredients; Excel; Solver function. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200038 |
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| Galvão,Marcos Aurelio Morais; Arruda,Alice Oliveira de; Bezerra,Isabelle Cristinne Ferraz; Ferreira,Magda Rhayanny Assunção; Soares,Luiz Alberto Lira. |
| ABSTRACT The stem bark and pods of “jucá” are widely used in Brazilian folk medicine and, despite their therapeutic relevancies, there are insufficient reports about their quality control. Both herbal drugs from the species are rich in tannins, which showed a lot of biological and economic interest. Thus, the purpose of this study was to evaluate the method for quantification of tannins in the stem bark and pods from L. ferrea. The performance of the method was tested against the influence of the most relevant parameters (reaction time; amount of drug; type and amount of precipitationagents; and, concentration of the reagents). The procedure was validated according to the literature. After optimization, the experimental conditions were established as: 30... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Libidibia ferrea; Quality control; Spectrophotometry; Tannins. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100431 |
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| Almeida,Niza Helena de; Nohama,Percy. |
| We present a proposal for evaluating and qualifying pH measuring devices based on the requirements of relevant standards. The proposal presented is based on ASTM E70, NBR 7353, JIS Z 8805, BS 3145, DIN 19268, NBR ISO 17025 and other standards, as well as the results of field research carried out in conjunction with professionals performing pH measurements in public health laboratories. Evaluation is performed by inspection of a form which records data from the measuring system. The form gives acceptable variations in the parameters being tested and allows a conclusion to be reached regarding acceptability of the system. Using the proposed protocol allows definition of suitable analysis criteria, while taking into account the influence pH measurement is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quality control; PH measurement; Instrumentation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000200005 |
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| Justus,Barbara; Almeida,Valter Paes de; Gonçalves,Melissa Marques; Assunção,Daniele Priscila da Silva Fardin de; Borsato,Debora Maria; Arana,Andres Fernando Montenegro; Maia,Beatriz Helena Lameiro Noronha Sales; Paula,Josiane de Fátima Padilha de; Budel,Jane Manfron; Farago,Paulo Vitor. |
| ABSTRACT Lavandula dentata, popularly known as lavender, is commonly used in traditional medicine for the treatment of digestive and inflammatory disorders. The objective of this study was to analyzed the chemical oil composition, antioxidant and antimicrobial activities of the essential oil and anatomical markers of the leaf and stem of L. dentata cultivated in South Brazil. Essential oil showed an antioxidant activity similar to rutin and gallic acid when analyzed by phosphomolybdenum method. However, by the free radical DPPH and ABTS methods, it showed a slight potential antioxidant. Essential oil presented 1,8-cineol (63%) as major component, antimicrobial activity against Gram-positive, Gram-negative bacteria strains and Candida albicans, by broth... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Antimicrobial; Antioxidant; Lamiaceae; Quality control; Volatile oil. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100441 |
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| Soares,Marcus Alvarenga; Leite,Germano Leão Demolin; Zanuncio,José Cola; Sá,Veríssimo Gibran Mendes de; Ferreira,Cleidson Soares; Rocha,Silma Leite; Pires,Evaldo Martins; Serrão,José Eduardo. |
| The objective of this work was to assess the flight capacity, parasitism and emergence of Trichogramma atopoviriliaand two strains of T. pretiosum (Hymenoptera: Trichogrammatidae) (L1 and L2). The flight capacity of these species was assessed in test units consisting of a plastic PVC cylinder with a rigid transparent plastic circle on the upper part and an extruded polystyrene disk closing its bottom. A tube was placed in each test unit containing a card with 300 Anagasta kuehniella (Lepidoptera: Pyralidae) eggs parasitised by Trichogramma. These cards were assessed to determine the parasitism rate and adult emergence of these natural enemies. T. atopovirilia and T. pretiosum L1 presented adequate flight capacity and parasitism, in addition to high... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Flight; Parasitism; Quality control; Emergence. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200018 |
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| Camilotti,Júlia Gabriela; Biu,Ciane Costa; Farago,Paulo Vitor; Santos,Vera Lúcia Pereira dos; Franco,Celia Regina Cavichiolo; Budel,Jane Manfron. |
| The genus Calea belongs to the tribe Heliantheae and presents about 125 species. Calea serrata, popularly known as erva-de-cobra, chá-amargo and quebra-tudo, is an endemic species found in southern Brazil and is used in traditional medicine to treat ulcers and livers problems. The present work aimed to study the pharmacobotanical characters of leaves and stems of C. serrata for quality control purposes. The plant material was processed according to standard methods of light and scanning electron microscopy. Glandular capitate-stalked and capitate-sessile, uniseriate multicellular non-glandular trichome with tapered apical cell, conical non-glandular trichome, isobilateral mesophyll, secretory ducts near the endoderm and circular shape with six ribs in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calea serrata; Anatomical study; Quality control. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000600867 |
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| Sasamoto,Sandra Aragão de Almeida; Tipple,Anaclara Ferreira Veiga; Souza,Adenícia Custódia Silva e; Paiva,Enilza Maria M. de; Souza,Carlos de Paula e; Pimenta,Fabiana Cristina. |
| A guarantee of quality of all steps involved in processing dental materials is essential to achieve security. A descriptive study was made of how Public Dental Medicine Colleges in Brazil process critical materials and determine the patterns of physical, chemical and biological control in their use of hot air ovens and autoclaves to sterilize these materials. The data were obtained with a questionnaire, sent by mail and analyzed with the software EPI-INFO 6.04. Among the 40 Brazilian public Dental Medicine Colleges, only 16 returned the questionnaire. In eight of these, the individuals responsible for the materials and sterilization center had a college degree in a human health field. In 14 institutions, the students were responsible for the cleaning of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Central supply unit; Odontology; Quality control. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702004000600009 |
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| Ladwig,R.; Vigo,A.; Fedeli,L.M.G.; Chambless,L.E.; Bensenor,I.; Schmidt,M.I.; Vidigal,P.G.; Castilhos,C.D.; Duncan,B.B.. |
| Multi-center epidemiological studies must ascertain that their measurements are accurate and reliable. For laboratory measurements, reliability can be assessed through investigation of reproducibility of measurements in the same individual. In this paper, we present results from the quality control analysis of the baseline laboratory measurements from the ELSA-Brasil study. The study enrolled 15,105 civil servants at 6 research centers in 3 regions of Brazil between 2008–2010, with multiple biochemical analytes being measured at a central laboratory. Quality control was ascertained through standard laboratory evaluation of intra- and inter-assay variability and test-retest analysis in a subset of randomly chosen participants. An additional sample of urine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multi-center studies; Laboratory measurements; Quality control. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000900701 |
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| Calixto,J.B.. |
| This review highlights the current advances in knowledge about the safety, efficacy, quality control, marketing and regulatory aspects of botanical medicines. Phytotherapeutic agents are standardized herbal preparations consisting of complex mixtures of one or more plants which contain as active ingredients plant parts or plant material in the crude or processed state. A marked growth in the worldwide phytotherapeutic market has occurred over the last 15 years. For the European and USA markets alone, this will reach about $7 billion and $5 billion per annum, respectively, in 1999, and has thus attracted the interest of most large pharmaceutical companies. Insufficient data exist for most plants to guarantee their quality, efficacy and safety. The idea that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbal medicine; Efficacy; Safety; Quality control; Market; Regulatory guidelines. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000200004 |
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| Cantarelli,Vlademir Vicente; Inamine,Everton; Brodt,Teresa Cristina Zenobin; Secchi,Carina; Pereira,Fabiana de Souza; Amaro,Maria Cristina; Batalha,Alice Aurora; Ligiero,Simone Dornellas. |
| Stringent quality control protocols must be used in order to guaranty that a particular medium is able to recover all sort of organism that may be present in clinical samples. Our aim was to evaluate an alternative protocol that would allow us to detect medium failure to yield quantitative growth of selected pathogens, and compare with the document M22-A2 from NCCLS. The detection limit of Haemophilus influenzae was significantly different depending on media source. We conclude that for some fastidious microorganisms, quantitative verification of the growth capacity of the culture medium is advised. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quality control; Culture medium; NCCLS. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500003 |
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| Silva,Joanda Paolla Raimundo e; Reis,Malu Maria Lucas dos; Santana,Cleildo Pereira; Medeiros,Ana Cláudia Dantas de; Alves,Harley da Silva. |
| Tacinga inamoena (K. Schum.) N.P. Taylor & Stuppy, also known as quipá, is a native cactus of the Caatinga used in traditional medicine to treat urethral infections and inflammation. This study aimed to determine the physicochemical characteristics of vegetal drug obtained from the roots of T. inamoena. Analytical techniques and phytochemical tests were used, such as thermal analysis, qualitative and semiquantitative determination of secondary metabolites and spectroscopy at the infrared region. The powder of the vegetal drug met the parameters established by the Brazilian Pharmacopoeia, except for compressibility, which was low. On the thermogravimetric curve, three events related to the mass loss were verified, which correlate with the vegetal drug... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cactaceae; Quality control; Herbal medicine; Secondary metabolites; Thermogravimetry. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100602 |
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| Registros recuperados: 109 | |
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