Foods: their composition and analysis : A manual for the use of analytical chemists and others. With an introductory essay on the history of adulteration / By Alexander Wynter Blyth. With numerous tables and illustrations.

  • Alexander Wynter Blyth
Date:
1882
Catalogue details

Licence: Public Domain Mark

Credit: Foods: their composition and analysis : A manual for the use of analytical chemists and others. With an introductory essay on the history of adulteration / By Alexander Wynter Blyth. With numerous tables and illustrations. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

    186/673 (page 145)
    I. Granules throughout many-angled. (1.) With an evident nucleus, largest -0066 mm. [-00025 inch]—RICE. (2.) Without a nucleus, the largest -0088 mm. [-00034 inch]—MlLLET STARCH. II. Among many angular forms also some rounded. (A.) No drum-shaped starches present, angular forms predominating. (1.) Without a nucleus, very small, •0044 mm. [-00016 inch]—OAT STARCH. (2.) With a nucleus, -0132 to -0220 mm. [0005 to -0008 inch]. (a.) Evident round nucleus, here and there the smaller combined, granules in variously shaped groups—BUCKWHEAT. (6.) Mostly a radiating or star-shaped fissure, none of the granules united— MAIZE. (B.) More or less numerous drum-shaped to sugar-hat shaped granules. (1.) Numerous eccentric layers. Largest granules, '0220 to -0352 mm. [-0008 to 0014 inch]—BATATA STARCH. (2.) Without concentric circles, '008 to 022 mm. [-0003 to -0008 inch]. (a.) The slit of the drum-shaped particles enlarged towards the flattened side, -008 to 022 mm. [ 0003 to '0008 inch]-CASSAVA STARCH. (6.) Slit wanting or not large. (aa.) Nucleus small, eccentric, -008 to -016 mm. [-0003 to -0006 inch]— PACHYRHIZUS ANGULATUS. (bb.) Nucleus small, central, or vi^anting. {aaa.) Irregular many-angled forms, -009, -008 to -0176 mm. [-0003 to '0007 inch]—SECHIUM STARCH (Cucurbitaceaj). (bbh.) Only a few angular forms, some with a radiated fissure, -008 to '0176 mm. [ 0003 to 0007 inch]—CHESTNUT STARCH. C. Gbanules Single and Compound, the Majority Egg-shaped and rounded with eccentric nucleus and numerous concentric Layers, the Compound Masses composed of a Larok Granule AND one or a few VERY SmALL FLATTENED DRUM-SHAPED BoDIES -025 to -066 mm. [-00097 to -0025 inch]—SAGO STARCH. Karraarsch has determined the maximum size of some of the starches. Karmarsch's values, as well as Wiesner's, are arranged in the following Table (XI.) They differ in a few instances from the dimensions the author has given at pp. 139-144.