. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. Fig. 22.—Osazones. A, of glucose; B, of maltose (after Plimmer) of phenylhydrazine h^'drochloride in gh'cerine ^^-ith which a drop of a solution of sodium acetate in gtycerine (Appendix II) is thoroughly mixed. The preparation is heated for about half an hour (although a longer period is often necessary) and aUowed to cool. The phenylhydrazine reacts ^\•ith many of the sugars to form insoluble yellow cr^'staUine compounds, known as osazones. Glucose and fructose produce the same osazone, whose crystals appear
. An introduction to the structure and reproduction of plants. Plant anatomy; Plants. Fig. 22.—Osazones. A, of glucose; B, of maltose (after Plimmer) of phenylhydrazine h^'drochloride in gh'cerine ^^-ith which a drop of a solution of sodium acetate in gtycerine (Appendix II) is thoroughly mixed. The preparation is heated for about half an hour (although a longer period is often necessary) and aUowed to cool. The phenylhydrazine reacts ^\•ith many of the sugars to form insoluble yellow cr^'staUine compounds, known as osazones. Glucose and fructose produce the same osazone, whose crystals appear as long needles arranged in sheaves (Fig. 22, A); that of maltose forms rosettes or plates of broad needles (Fig. 22, B), whilst in the case of cane-sugar no osazone is produced. Another method of storage of carbohydrate-material takes the form of strongly thickened ceU-waUs (cf. p. 30 and Fig. 14, A), as in many seeds (Date, Lupine, Coffee, etc.). Such walls consist. 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 Fritsch, Felix Eugene, 1879-; Salisbury, E. J. (Edward James), Sir, b. 1886. London, G. Bell and sons ltd.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpl, booksubjectplants
