caa a22 4500 465749054 CHVBK 20180323111828.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00322511 doi (NATIONALLICENCE)springer-10.1007/BF00322511 Production and certification of "fresh” reference material for macronutrient analysis [Elektronische Daten] [Ia Torelm, Lars-Börje Croon, Kurt Kolar, Torbjörn Schröder] Summary: Reference materials for carrying out in-house quality assurance by food laboratories that analyse macronutrients have to date been inadequate. The freeze-dried, very specialized, materials that exist on the market are not always comparable with ordinary food products analysed at those laboratories. A homogeneous, "fresh”, canned meat material was produced by an ordinary cannery. The total amount of material (pork, nitrite salt and water) was 1700 kg. During production, the fat content was continuously analysed in the different sub-batches and combinations are made accordingly. The material was packed in tin cans containing 200 g, and tested for homogeneity. The shelf life is, by experience, at least five years. A large number of authorized public and industry laboratories participated in the certification procedure. For each constituent different types of standard analytical methods were used. The material is offered for sale together with a certificate, giving mean values for moisture, ash, fat, nitrogen, sodium, sodium chloride and hydroxyproline content. The uncertainty is given as standard deviations including the analytical error and the variations between laboratories, methods and units. Springer-Verlag, 1990 Torelm Ia National Food Administration, Box 622, S-751 26, Uppsala, Sweden aut Croon Lars-Börje National Food Administration, Box 622, S-751 26, Uppsala, Sweden aut Kolar Kurt Meat Research Institute, Box 504, S-244 00, Kävlinge, Sweden aut Schröder Torbjörn National Food Administration, Box 622, S-751 26, Uppsala, Sweden aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/4(1990-01-01), 435-437 0937-0633 338:4<435 1990 338 216 https://doi.org/10.1007/BF00322511 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00322511 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Torelm Ia National Food Administration, Box 622, S-751 26, Uppsala, Sweden aut NATIONALLICENCE 700 1- Croon Lars-Börje National Food Administration, Box 622, S-751 26, Uppsala, Sweden aut NATIONALLICENCE 700 1- Kolar Kurt Meat Research Institute, Box 504, S-244 00, Kävlinge, Sweden aut NATIONALLICENCE 700 1- Schröder Torbjörn National Food Administration, Box 622, S-751 26, Uppsala, Sweden aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/4(1990-01-01), 435-437 0937-0633 338:4<435 1990 338 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer