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It was founded in 1884 as the Association of Official Agricultural Chemists (AOAC) and became AOAC International in 1991. It publishes standardized, chemical analysis methods designed to increase confidence in the results of chemical and microbiological analyses. Government agencies and civil organizations often require that laboratories use ...
In industry, the standard proximates are: [2] [3] [4] Moisture content; Volatile matter; Ash content; Fixed carbon; Carbohydrates (calculated) Analytically, four of the five constituents are obtained via chemical reactions and experiments. The fifth constituent, carbohydrates, are calculated based on the determination of the four others.
Food moisture analysis is the determination of the concentration of water in a food sample. A variety of techniques may be used including Karl Fischer titration and loss on drying. Many technical standards exist which define test methods for determining moisture in different types of food.
The Journal of AOAC International is a peer-reviewed scientific journal publishing research articles in the field of analytical chemistry and microbiology covering basic and applied research in analytical sciences related to foods, drugs, agriculture, the environment, and more. [1]
The 6th Edition contains more than 400 fats, oils and lipid related methods critical for processing and trading. Laboratory Proficiency Program (LPP) The AOCS LPP is the world's most extensive and respected collaborative proficiency testing program for oil- and fat- related commodities, oilseeds, oilseed meals, and edible fats.
S + 2 H 2 SO 4 → 3 SO 2 + 2 H 2 O. Catalysts like selenium, Hg 2 SO 4 or CuSO 4 are often added to make the digestion go faster. Na 2 SO 4 or K 2 SO 4 is also added to increase the boiling point of H 2 SO 4. Digestion is complete when the liquor clarifies with the release of fumes. [3] A distillation system depicted below is built.
Proximity analysis is a class of spatial analysis tools and algorithms that employ geographic distance as a central principle. [1] Distance is fundamental to geographic inquiry and spatial analysis, due to principles such as the friction of distance, Tobler's first law of geography, and Spatial autocorrelation, which are incorporated into analytical tools. [2]
Although largely replaced by instrumental techniques, the Orsat remains a reliable method of measurement and is relatively simple to use. [1] The apparatus was invented by Louis Orsat who reported it in the Annales des Mines in 1875. [2] [3] There was an earlier report by Thomas Egleston in 1873. [4]