Memoirs of the Science Department, University of Tokio, Japan

Memoirs of the Science Department, University of Tokio, Japan

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1881 edition. Excerpt: ...two actions is to leave the dextrin very nearly what it was on the third day. It is important to observe that even so early as the third clay only dextrose, and no maltose, is present in solution; the observed s1iecific rotatory power is 124, and that calculated for dextrose and dextrin in the observed proportions is 123.4. The specific gravity of the mash has increased a little owing to the larger amount of solid matter in the solution, and the specitic rotatory lxwer has diminished, the proportion of dextrose to dextrin being greater on the fifth day than on the third day. The composition of the mash as given on the fifth day may probably be looked upon as the usual composition just before heating; this sample was taken at 8 a.m. and the heating commenced at 3 p. m. on the same day. If no change had occurred the mash would have contained 32.17 percent. of starch. The dextrose and dextrin on the third day correspond to 11.735, which leaves 20.435 of starch undissolved, and in the same way the starch undissolvcd on the fifth day amounts to 15.4GJ&. The heating i.s effected in all establishments in the same way. A closed tub called nukume or rfiiki of a somewhat conical form, 18 inches high, 12 in. at its upper diameter and 9 to 10 inches in diameter at the lower part, is filled with boiling water and tightly closed. It is supported by moans of a handle farmed by a cross bar fastened to two ears which project upwards from opposite sides; in this way it is let down into the thick mash contained in the large tub, and the mixture is agitated by moving the heater about. As a rule one heater is allowed to remain in the mash for half-a-day, and is then replaced by a fresh one which is left in for the same time, but the number of heaters used more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236557174
  • 9781236557179