Development, production and certification of microbiological reference materials

Janning, B.; Veld, P.H. in 't; Mooijman, Kirsten A.; Havelaar, Arie H.

doi:10.1007/bf00322335

Cited by 10 publications

(2 citation statements)

References 6 publications

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“…Spray drying has also been applied in the ceramic and painting industry because of the ability of meeting particle size distribution requirements, producing spherical particles and handling abrasive material (Jirousek, Kucera, & Hanus, 1990;Rudzinski, Sutcliffe, Dahlquist, & Key Schwartz, 1997). Another use of spray drying is in the chemical and biological industries, in which a wide variety of powdered, granulated and agglomerated products were manufactured (Janning, 1995;Muhammed, 1996). Spray dryers designed specially for integration into either batch or continuous operations under sanitary or aseptic conditions, are also of common use in the pharmaceutical industry (Lee, Huang, Wen, & Suen, 1995;Subramaniam, Carr, & McNeff, 2000).…”

Section: Introductionmentioning

confidence: 99%

Optimization of the drying step for preparing a new commercial powdered soup

Fernández‐Pérez

Tapiador²,

Martı́n

et al. 2004

Innovative Food Science & Emerging Technologies

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Section: Introductionmentioning

confidence: 99%

Optimization of the drying step for preparing a new commercial powdered soup

Fernández‐Pérez

Tapiador²,

Martı́n

et al. 2004

Innovative Food Science & Emerging Technologies

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“…Atualmente, a implementação de programas de garantia da qualidade nas práticas laboratoriais tem sido de grande importância. Entretanto, o emprego de métodos de análise oficiais e a utilização de controles internos, por si só não garantem resultados fidedignos 10 . A NBr iSo/iEC 17025 11 é a principal norma utilizada como sistema da qualidade em laboratórios de ensaios analíticos 12,13 .…”

Section: Introductionunclassified

Preparo de Itens de Ensaio de Proficiência em Matriz Queijo para a Pesquisa de Salmonella spp.

et al. 2014

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A participação de laboratórios analíticos em ensaio de proficiência permite a verificação da confiabilidade dos resultados gerados nas análises de controle da qualidade. O objetivo deste estudo foi produzir um lote de itens de ensaio (iE) a ser utilizado em ensaio de proficiência (EP) para pesquisa de Salmonella spp. em matriz queijo. Queijo Minas Frescal (QMF) Ultrafiltrado foi utilizado como matriz e fortificado com uma cepa de Salmonella Enteritidis. A trealose foi utilizada como crioprotetor e a liofilização como técnica de preservação. O lote foi avaliado quanto a verificação do vácuo, teste da homogeneidade, estudo da estabilidade em longo prazo nas temperaturas de -70 o C (referência) e -20 o C (armazenamento) e em curto prazo nas temperaturas de 4, 25 e 35ºC (transporte). o lote apresentou presença de vácuo em 95,6% dos frascos e foi considerado suficientemente homogêneo. Os IE apresentaram estabilidade a -70ºC superior a 360 dias e a -20ºC superior a 160 dias. Os IE demonstraram ser estáveis por até seis dias nas temperaturas de 4 e 25ºC, mas não a 35ºC. Conclui-se que a metodologia utilizada foi satisfatória para produção de IE para o ensaio de pesquisa de Salmonella spp. em matriz queijo.

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Reference Materials for “Life” Analysis

Jenks¹

2000

References Materials for Chemical Analysis

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So far we have examined the reference material and calibration needs of the conventional analytical chemist. But as we move into the zIst Century, new technologies are driving the quality concepts established over the past 30 years by analytical chemists into other analytical disciplines, including microbiology and molecular biology. Indeed, the next major challenge may be the development of reference materials, or the provision of a form of reference material, that gives to the molecular biologist the same ability to control and standardize their determinations and quantification as a chemical reference material gives the analytical chemist.There have been a number of attempts to achieve this objective, but so far the challenge has not been fully met. This Chapter will examine some of the conventional approaches and then go on to consider how recent developments in the use of the Polymerase Chain Reaction (PCR) with DNA for the identification of species and individual organisms by DNA analysis, sometimes known as "DNA Fingerprinting", have identified a yet unrealized need for a new dimension of certified reference materials.We will also review the development of chemical metrology in the pharmaceutical industry, an industry that is ever more closely related to molecular biology. The pharmacists first developed quality protocols and reference materials more than 40 years ago, quite independently of the activities of I S 0 and the REMCO Technical Committee. Only in the closing years of the 20th Century have these two important groups begun to realize that they share common objectives. 5.1

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Development, production and certification of microbiological reference materials

Cited by 10 publications

References 6 publications

Optimization of the drying step for preparing a new commercial powdered soup

Optimization of the drying step for preparing a new commercial powdered soup

Preparo de Itens de Ensaio de Proficiência em Matriz Queijo para a Pesquisa de Salmonella spp.

Reference Materials for “Life” Analysis

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