TABLE 1.
Sampling | Mean population (log CFU/g)a |
|
---|---|---|
BSA or NASMACb | NATSAc | |
Salmonella | ||
Trial (n = 256 each) | ||
1 | 2.79 A | 3.00 A |
2 | 2.78 A | 2.95 A |
Germination day | ||
9 (n = 128) | 3.20 A | 3.57 A |
7 (n = 128) | 3.19 A | 3.40 A |
5 (n = 128) | 3.13 A | 3.30 A |
3 (n = 96) | 1.63 B | 1.67 B |
1 (n = 32) | 1.45 B | 1.48 B |
Strain (n = 128 each) | ||
S. Stanley | 3.09 A | 3.52 A |
S. Baildon | 3.30 A | 3.37 A |
S. Cubana | 3.16 A | 3.24 A |
S. Montevideo | 1.55 B | 1.75 B |
Tissue sections of sprouts/seedlings | ||
Cotyledon (n = 96) | 3.63 A | 3.82 A |
Seed coat (n = 96) | 3.52 A | 3.80 A |
Root (n = 128) | 2.69 B | 2.96 B |
Seed coat/cotyledon (n = 32) | 2.11 B,C | 2.13 C |
Stem (n = 128) | 2.17 C | 2.30 C |
Pregerminated seeds (n = 32) | 1.45 D | 1.48 D |
Vegetable seed type (n = 128 each) | ||
Fenugreek | 4.08 A | 4.36 A |
Alfalfa | 4.21 A | 4.30 A |
Tomato | 1.47 B | 1.68 B |
Lettuce | 1.35 B | 1.55 B |
EHEC | ||
Trial (n = 256 each) | ||
1 | 1.60 A | 1.93 A |
2 | 1.54 A | 1.89 A |
Germination day | ||
9 (n = 128) | 2.30 A | 2.91 A |
7 (n = 128) | 1.76 B | 2.27 B |
5 (n = 128) | 1.43 B | 1.54 C |
3 (n = 96) | 1.11 B,C | 1.15 C,D |
1 (n = 32) | 0.88 C | 1.03 D |
Strain (n = 128 each) | ||
E. coli K4492 | 1.70 A | 1.91 A |
E. coli H1730 | 1.72 A | 1.93 A |
E. coli BAA-2326 | 1.49 A,B | 1.90 A |
E. coli F4546 | 1.37 B | 1.91 A |
Tissue sections of sprouts/seedlings | ||
Cotyledon (n = 96) | 1.83 A | 2.19 A |
Seed coat/cotyledon (n = 32) | 1.66 A | 2.18 A,B |
Seed coat (n = 96) | 1.67 A | 1.95 A,B |
Root (n = 128) | 1.53 AB | 1.85 A,B |
Stem (n = 128) | 1.44 AB | 1.68 B |
Pregerminated seeds (n = 32) | 1.11 B | 1.15 C |
Vegetable seed type (n = 128 each) | ||
Alfalfa | 3.31 A | 3.70 A |
Fenugreek | 1.93 B | 2.27 B |
Lettuce | 0.67 C | 1.54 C |
Tomato | 0.38 C | 1.15 D |
Mean populations of the same bacterial pathogen within a column and the same comparative category that are not followed by the same letter are significantly different (P < 0.05).
BSA, bismuth sulfite agar; NASMAC, sorbitol MacConkey agar supplemented with nalidixic acid.
NATSA, tryptic soy agar supplemented with nalidixic acid.