Selecta 4002429 - Formula F* Calculation and Tables

MANUAL DE INSTRUCCIONES CODIGO 80342 REV O 11/2021 Pag.: 57
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FormulaF
0
*
It is a numerical value (minutes) that parameterizes the time required
to destroy a known number of reference pathogenic bacteria (pas-
teurization) or spores (sterilization), at a determining temperature.
The nal F
0
value is the result of a combination of times and tem-
peratures that occur inside the container (at the coldest point) during
the heat treatment. A certain F
0
value (sterilization or pasteurization
value) can be reached with different combinations of times and tem-
peratures (Table 1 Sterilization, Table 2 and Table 3 Pasteurization).
A higher temperature requires less time and vice versa, to obtain the
same degree of sterilization or pasteurization (F
0
) as the case may be.
* tables according to Reichert, 1977
Temp. F
0
100 0,007
101 0,009
102 0,012
103 0,015
104 0,019
105 0,024
106 0,030
107 0,038
108 0,048
109 0,061
110 0,077
111 0,097
112 0,122
113 0,154
114 0,194
115 0,244
116 0,303
117 0,388
118 0,488
119 0,615
120 0,774
121 0,974
122 1,227
123 1,544
124 1,944
125 2,448
126 3,082
127 3,830
128 4,885
129 6,150
130 7,745
Table 3: Sterilization F
0
values
Temp. F
0
67 0,001
68 0,001
69 0,001
70 0,002
71 0,003
72 0,004
73 0,005
74 0,007
75 0,009
76 0,011
77 0,015
78 0,019
79 0,024
80 0,032
81 0,041
82 0,054
83 0,069
84 0,089
85 0,115
86 0,150
87 0,194
88 0,251
89 0,325
90 0,422
91 0,546
92 0,708
93 0,917
94 1,180
95 1,540
96 1,935
97 2,585
98 3,349
99 4,340
100 5,624
Table 2: High pasteuriza-
tion F
0
values
Temp. F
0
55 0,03
56 0,04
57 0,05
58 0,06
59 0,08
60 0,10
61 0,13
62 0,16
63 0,20
64 0,25
65 0,32
66 0,40
67 0,50
68 0,63
69 0,79
70 1,00
71 1,26
72 1,58
73 1,99
74 2,51
75 3,16
76 3,96
77 5,01
78 6,31
79 7,94
80 10,00
81 12,59
82 15,85
83 19,95
84 25,12
85 31,62
86 39,81
87 50,12
88 63,09
89 79,43
90 100,00
91 125,89
92 158,49
93 199,53
94 251,19
95 316,23
Table 1: Low pasteuriza-
tion F
0
values