| 摘要 |
755,750. Quick-cooking rice. GENERAL FOODS CORPORATION. Feb. 25, 1954 [July 29, 1953], No. 5571/54. Class 58. Rice is gun-puffed to yield quick-cooking rice having a volume 2 to 3 times its original volume. The puffing gun may have a cylindrical barrel closed at one end and fitted at the other end with a hinged door releasably locked by trigger mechanism. The rice may be soaked in water and heated in the gun barrel, by a gas flame and/or live saturated steam under pressure, until it attains a terminal temperature between 325‹ and 370‹ F. and a terminal moisture content ranging from a value between 18 to 38 per cent at 325‹ F. to 28 per cent at 370‹ F., as defined by areas C 1 and C 2 on the graph, and thus subjected to a water vapour pressure corresponding to that of saturated steam at the particular rice temperature concerned, this pressure being suddenly released to the atmosphere by triggering-off the gun. The rice may be subjected to the terminal conditions prevailing in area D of the graph and after puffing, any puffed rice produced with a volume greater than that of the quickcooking rice of the invention, may be removed. The rice may be puffed by using apparatus described in Specification 700,140. The pressure in the gun may be boosted by the introduction of air or carbon dioxide or an inert gas such as nitrogen. |
