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| Kahl, Dr. Johannes; Huber, Machteld; Busscher, Dr. Nicolaas; Kretschmer, Sebastian; Andersen, Dr. Jens-Otto; Mergardt, Gaby; Paulsen, Marianne; Doesburg, Paul; Meier-Ploeger, Prof.Dr. Angelika. |
| Because of the growing market in organic produce screening methods are needed which allow the characterization of the food. Since many years the so called biocrystallization technique has been used to characterize products derived from different farming systems yet the method was not validated. The results of our investigations in the last three years show that the method can fulfill the requirements for the validation process due to international standards. The sample preparation and the crystallization procedures could be standardised and documented. For the crystallization factors of influence were described and controlled. In addition to the traditionally used visual evaluation a new computerized image texture analysis program was succesfully applied.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2005 |
URL: http://orgprints.org/3775/1/3775.pdf |
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| Huber, Machteld; Doesburg, Paul; van de Vijver, Lucy. |
| Following two milk studies performed by the Louis Bolk Instituut, the hypothesis that processing of milk has an important effect on bio crystallisation pictures was investigated. Two raw whole milk tank samples, coded A and B, and 5 treatments performed on these samples (in total A/B 1-6) were offered for analysis. Evaluation was performed Visually and by means of computerized Texture analysis. Conclusions: Processing of milk has a strong effect on the crystallisation pictures. Especially homogenisation of milk had a large impact on the crystallisation picture. Surprisingly, this influence is higher than the treatment with ultra high temperatures at 140C. |
| Tipo: Report |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2007 |
URL: http://orgprints.org/13447/1/2010.pdf |
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| Zalecka, Aneta; Skjerbaek, Kirsten; Doesburg, Paul; Pyskow, Bent; Huber, Machteld; Kahl, Dr. Johannes; Ploeger, Prof. Angelika. |
| The growing organic market demands for methods which can describe food quality within the organic system. With the capillary dynamolysis technique patterns are produced on thin-layer chromatographic paper and evaluated as a fingerprint of the sample as a whole. To be applied in routine analysis the method has to be standardised according to international standard norms. After the laboratory process had been documented and a visual pattern evaluation method had been developed and applied for the evaluation of the patterns, the method was standard-ized for selected carrot and wheat samples, which is described here. For standardization several factors of influence were tested and the reproducibility between 3 different laboratories in the EU was investigated.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2006 |
URL: http://orgprints.org/7308/1/kahl1odensea.doc |
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