Food Inspection And Analysis. for the Use of Public Analysts, Health Officers, Sanitary Chemists, And Food Economists
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In our eReader you can find the full English version of the book. Read Food Inspection And Analysis. for the Use of Public Analysts, Health Officers, Sanitary Chemists, And Food Economists Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Food Inspection And Analysis. for the Use of Public Analysts, Health Officers, Sanitary Chemists, And Food Economists
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To quickly assess the difficulty of the text, read a short excerpt:
S. Dept. of Agric, Bur. of Chem., Bui. 107 (rev.) p. 88.
736 FOOD INSPECTION AND ANALYSIS.
as above. Designate the number of cubic centimeters of permanganate employed as " Z>." Then a—b = c, the number of cubic centimeters of permanganate solution required for the oxidation of the tannin and coloring matter in ID cc. of wine, i cc. = 0.004157 gram of tannin.
Detection and Determination of Preservatives. — See Chapter XVIII.
Detection of Colors. — Dupre Method.'^ — Dissolve i part of pure gelat...in in 10 parts boiling water, pour upon a plate to harden and cut into 2 cm, cubes. Immerse one of the cubes in the suspected sample, allow to remain for twenty-four hours, wash slightly in cold water, and cut through with a knife. If the color is a natural one, it will lightly tinge the outer surface of the cube, but will not permeate far below the surface, so that the inner portion of the cross-section will be largely free from color.
Nearly all foreign coloring matters used in wine, such as most coal-tar dyes, cochineal, Brazil wood, logwood, etc., will be found to deeply per- meate the jelly cube often to the center.
What to read after Food Inspection And Analysis. for the Use of Public Analysts, Health Officers, Sanitary Chemists, And Food Economists?
You can find similar books in the "Read Also" column, or choose other free books by Albert E Albert Ernest Leach to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
S. Dept. of Agric, Bur. of Chem., Bui. 107 (rev.) p. 88.
736 FOOD INSPECTION AND ANALYSIS.
as above. Designate the number of cubic centimeters of permanganate employed as " Z>." Then a—b = c, the number of cubic centimeters of permanganate solution required for the oxidation of the tannin and coloring matter in ID cc. of wine, i cc. = 0.004157 gram of tannin.
Detection and Determination of Preservatives. — See Chapter XVIII.
Detection of Colors. — Dupre Method.'^ — Dissolve i part of pure gelat...in in 10 parts boiling water, pour upon a plate to harden and cut into 2 cm, cubes. Immerse one of the cubes in the suspected sample, allow to remain for twenty-four hours, wash slightly in cold water, and cut through with a knife. If the color is a natural one, it will lightly tinge the outer surface of the cube, but will not permeate far below the surface, so that the inner portion of the cross-section will be largely free from color.
Nearly all foreign coloring matters used in wine, such as most coal-tar dyes, cochineal, Brazil wood, logwood, etc., will be found to deeply per- meate the jelly cube often to the center.
What to read after Food Inspection And Analysis. for the Use of Public Analysts, Health Officers, Sanitary Chemists, And Food Economists?
You can find similar books in the "Read Also" column, or choose other free books by Albert E Albert Ernest Leach to read onlineMoreLess
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