. The butter industry, prepared for the use of creameries, dairy students and pure food departments. Butter. 528 Butter Defects more butter on the open shelves of their stores than they may rea- sonably expect to dispose of each day, or preferably to reserve a compartment in their refrigerator for all the butter they carry in Pig". 83. Unsalted iDutter held at room temperature for 30 days, showing- deep yellow horder at periphery due to evaporation of moisture, while interior retained its original color; moisture in surface layer was 1 per cent, in interior 16 per cent. Green Spot
. The butter industry, prepared for the use of creameries, dairy students and pure food departments. Butter. 528 Butter Defects more butter on the open shelves of their stores than they may rea- sonably expect to dispose of each day, or preferably to reserve a compartment in their refrigerator for all the butter they carry in Pig". 83. Unsalted iDutter held at room temperature for 30 days, showing- deep yellow horder at periphery due to evaporation of moisture, while interior retained its original color; moisture in surface layer was 1 per cent, in interior 16 per cent. Green Spots in Butter.—Green spots occasionally appear on the surface or in the interior of butter, other than those described under "moldy ; This green coloration, especially when found on the surface, usually shows up in the form of small circles or rings, which grow larger with age. Microchemical examination of these green spots by Hunziker and Hosman^ showed these spots to contain traces of copper. When they appear on the surface of print butter they can generally be traced to the presence in the parchment wrapper of very minute specks with metallic lustre. These specks in the wrapper have been found, by the authors, to consist of copper or an alloy containing copper, such as German silver, or brass. Further investigation has revealed that the parchment paper manufacturers are experiencing considerable difficulties to keep * Hunziker and Hosman, Blue Valley Research Laboratory, 1917-1919. Re- sults not Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hunziker, Otto Frederick, b. 1873. La Grange, Ill. , The author
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbutter, bookyear1920
