. The chemistry of plant and animal life. Agricultural chemistry. ORGANIC COMPOUNDS OF PLANTS 185 of polarized light a definite number of degrees which are accurately measured by the polariscope. Any decrease in purity influences proportionally the angle of diver- gence of the polarized light. Hence, if the angle of. Fig. 78. — Polariscope divergence of a commercial sugar is determined, its purity is likewise determined. 254. Sugar-beets are usually paid for on the basis of their content of sugar and purity of juice. For sugar- making purposes, the higher the content of sugar and the purer the
. The chemistry of plant and animal life. Agricultural chemistry. ORGANIC COMPOUNDS OF PLANTS 185 of polarized light a definite number of degrees which are accurately measured by the polariscope. Any decrease in purity influences proportionally the angle of diver- gence of the polarized light. Hence, if the angle of. Fig. 78. — Polariscope divergence of a commercial sugar is determined, its purity is likewise determined. 254. Sugar-beets are usually paid for on the basis of their content of sugar and purity of juice. For sugar- making purposes, the higher the content of sugar and the purer the juice, the more valuable the beets. Ordinarily, sugar-beets contain from 12 to 16 per cent sugar; occasion- ally as low as 8 and as high as 20 per cent. In addition to sugar, the beet juice has other solids, as small amounts of organic acids, albumin, and pectin. When the content of solid matter is 20 per cent and 16 of the 20 parts are sugar, the juice has a purity coefficient of 80 (j% X 100). 255. Food Value of Sugar. — When properly combined with other foods, sugar is a valuable nutrient for the pro- duction of heat and energy. Like starch, it is incapable of sustaining life unless associated with nitrogenous. 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 Snyder, Harry, 1867-1927. New York, The Macmillan company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagricul, bookyear1913
