Application of Modified Atmosphere Packaging on Quality of Selected Vegetables: A Review - Application of Modified Atmosphere Packaging on Quality of Selected Vegetables - page 74

Weight loss

PMAP 1

4

MAP 1

20 ∞ C

3.5

PMAP 2

3

12 ∞ C

PMAP 3

2.5

4 ∞ C

2

MAP 2

5 ∞ C

4 ∞ C

1.5

PMAP 4

10 ∞ C

1

4 ± 1 ∞ C

PMAP 5

0.5

5 ∞ C

4 ∞ C PMAP 6

0

0 2 4 6 8 0 2 4 6 8 0 MAP 3

Storage Time (Days)

Fig. 1.5 Weight loss in mushrooms stored under passive or active modifi ed atmosphere conditions
[PMAP 1 was created in polyolefi n pouches with OTR: 13,800 mL/m 2 day atm., Roy et al. ( 1996 ),
MAP 1 with initial atmosphere of 5 ± 1 % O 2 /3 ± 1 % CO 2 and LDPE fi lm used after vacuum cool-
ing treatment at 5 °C, Tao et al. ( 2006 ), PMAP 2 and 3 with microperforated OPP used as packag-
ing fi lm (with 45,000 and 2,400 mL/m 2 day atm. O 2 permeabilities, respectively), Simon et al.
( 2005 ), MAP 2 was created in PE packages with initial conditions of 15 % O 2 , a macroperforated
PE (17 perforations/m 2 with 0.1 mm 2 surface) was used for shiitake mushrooms storage at PMAP
4, Antmann et al. ( 2008 ), for PMAP 5 an PO fi lm was used to preserve fresh enoki mushrooms,
Kang et al. ( 2000 ), for common mushrooms stored under PMAP 6 a paper fi lm coated with a wheat
gluten solution was used (Guillaume et al. 2010 ) and MAP 3 for Agaricus bisporus mushrooms
stored under MAP (12 O 2 and 2.5 CO 2 ) by Jiang et al. ( 2010a , b , c , d ) ]

An evaluation of Fig. 1.5 leads to the conclusion that packaging under passive or
active atmosphere conditions has benefi cial effects on weight loss (all samples but
one were under 2.5 %). Storage under low temperatures and the selection of fi lms
with low water vapor transmission rate can reduce water loss and increase shelf life
of the product.

1.7.9 Other

1.7.9.1 Coleslaw mix (80 % Shredded Cabbage, 20 % Shredded Carrots)

Coleslaw mix inoculated with L. monocytogenes and L. innocua and then stored
under PMAP (OPP and four microperforated OPP fi lms, PA-120, PA-160, PA-190
and PA-210) at 3 and 8 °C was studied by Bourke and O'Beirne ( 2004 ). By day 12,
L. innocua counts fell rapidly in PA-120 (1.7 log CFU/g) than in all other PA fi lms.
The initial record of approximately 10 6 CFU/g total aerobic mesophiles at 3 °C
increased by 2 more log cycles by day 7 and fi nally remained at this level in the PA
fi lms, while OPP counts declined.
Different packaging treatments (PMAP with OPP and four microperforated OPP