. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMICAL NATURE PIGMENTS IN PAiUEMONETES 367 methyl alcohol the astacin enters the methyl alcohol layer as a sodium salt of astacin. When this layer is acidified the astacin comes out of solution as violet crystals. It has been found that if the pigment ob- tained by extraction of the whole Palccuwnctcs with chloroform was .15 = .10 u 1) o c o U .05. o o o 00 O o o 04 o -f 10 Wave Lengths (m/u) FIG. 2. The unbroken line represents the absorption bands of shrimp yellow pigment in chloroform; - - shows the absorption bands of
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMICAL NATURE PIGMENTS IN PAiUEMONETES 367 methyl alcohol the astacin enters the methyl alcohol layer as a sodium salt of astacin. When this layer is acidified the astacin comes out of solution as violet crystals. It has been found that if the pigment ob- tained by extraction of the whole Palccuwnctcs with chloroform was .15 = .10 u 1) o c o U .05. o o o 00 O o o 04 o -f 10 Wave Lengths (m/u) FIG. 2. The unbroken line represents the absorption bands of shrimp yellow pigment in chloroform; - - shows the absorption bands of plant carotin in alco- hol and ether as measured by McNicholas (1931). dissolved in petroleum ether and then shaken with a solution of potas- sium hydroxide in 90 per cent methyl alcohol, a reddish pigment en- tered the methyl alcohol layer and a yellow pigment remained in the petroleum ether. Figure 2 shows the absorption spectrum of the petro-. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
