Agriculture Reference
In-Depth Information
Carrots
(
Daucus
carota L
.)
cv.
Nantaise
des Sables
Passive
MAP:
1. >1 %
O
2
/30 % CO
2
2. >1 %
O
2
/4 % CO
2
3. >1 %
O
2
/16 % CO
2
4. 10 %
O
2
/10 % CO
2
5. 18 %
O
2
/3 % CO
2
Chlorine
treatment (into
water with
100
ʼ
g/mL free
chlorine) for
5 min.
Carrots were
then shredded
3 and
8 °C—10 days
A 0.5 log CFU
reduction on
mesophile load
was achieved with
the use of P-plus 1
fi lm from day 5
and onwards
Firmness
values
showed a
gradual
decrease
from day 8
onwards
Samples stored
in P-Plus 1 bags
had the highest
appearance
score followed
by samples
stored in OPP
Barry- Ryan
et al. (
2000
)
1. OPP with
OTR: 1,200 mL/
m
2
day atm.
2. Pebax fi lm
with OTR:
6,500 mL/
m
2
day atm.
3. Polyether
block amide
with OTR:
13,000 mL/
m
2
day atm.
4. P-plus 1
with OTR:
25,000 mL/
m
2
day atm.
5. P-plus 2
with OTR:
200,000 mL/
m
2
day atm.
Carrots
(
Daucus
carota
)
Film with OTR:
3,000 mL/
m
2
24 h atm.
Shredding, chlorine
treatment (water
with 200
ʼ
g/mL)
and inoculation
with 2 strains
of
L. mono-
cytogenes
5 and 15 °C—24
and 7 days,
respectively
Raw carrots posed
an antimicrobial
effect, reducing
L. monocytogenes
populations.
Chlorine treatment
effectively
reduced microbial
population
of yeasts, moulds
and mesophiles by
90 %
Cutting
treatments,
chlorine
treatment and
MAP did not
show any
signifi cant
effect on
L.
monocytogenes
populations
Beuchat and
Brakett (
1990
)
1. 3 % O
2
/
97 % CO
2
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