IGNITION CHARACTERISTICS OF SPRAY-DRIED MILK PRODUCT POWDERS IN OVEN TESTS

被引:6
作者
DUANE, TC [1 ]
SYNNOTT, EC [1 ]
机构
[1] NATL UNIV IRELAND UNIV COLL CORK,DEPT FOOD ENGN,CORK,IRELAND
关键词
D O I
10.1016/0260-8774(92)90067-G
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A range of seven spray-dried milk product powders, commercially manufactured in Ireland, is tested for minimum ignition temperature (MIT) in an oven (all-round heating). Samples are tested as cubes with side dimensions of 25, 38, 51, 76 and 102 mm. The relationship obtained between MIT (T) and r, which is half the characteristic dimension of the sample (cube side), is given, with the coefficient of correlation obtained. In all cases, MIT decreases with increasing sample size and the equation In (delta(c)T2/r2) = M - N/T is found to describe the relationship accurately when using modified values of delta(c) for each cube size. The value of the constant, N, in each case and its relationships with the percentage fat content, total unsaturation of the powders and percentage protein content are examined Excellent correlation is found for N as a joint function of percentage of fat and percentage of protein.
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页码:163 / 176
页数:14
相关论文
共 14 条
  • [1] Bowes P. C., 1976, PROCESS IND HAZARDS, P93
  • [2] BOWES PC, 1981, P S RUNAWAY REACTION, P1
  • [3] CURTIN A, 1990, THESIS U COLLEGE COR
  • [4] DUANE TC, 1981, P S RUNAWAY REACTION, P1
  • [5] FOLEY J, 1974, COMMERCIAL TESTING P
  • [6] FOX PF, 1976, FOOD ANAL 1
  • [7] FOX PF, 1975, FOOD CHEM
  • [8] Frank-Kamenetskii's D.A., 1969, DIFFUSION HEAT TRANS, P374
  • [9] GEANKOPLIS GJ, 1983, TRANSPORT PROCESSES, P322
  • [10] EFFECT OF TEMPERATURE AND BULK DENSITY ON THERMAL CONDUCTIVITY OF SPRAY-DRIED WHOLE MILK POWDER.
    MacCarthy, Diarmuid A.
    [J]. Journal of Food Engineering, 1985, 4 (04) : 249 - 263