The Influence Of Priming Two Cucumber Cultivar Seeds

J. Duhok Univ. Vol.13, No.1, (Agri. And Vet. Sciences) Pp 139-147, 2010
C
4
D
Fig.(1): Arhenus plots of AA degradation:(A)glass in light.(B)glass in dark.(C)plastic in light.(D)plastic in dark.
RESULTS AND DISCUSSION
Figure 2 show content ascorbic acid of
synthetic model system orange juice stored at
20,30,40 °C for four months..It was apparent that
samples that were stored in plastic bottles lost
more ascorbic acid than stored in glass bottle
amples, plastic allows more oxygen permeation
.Samples in plastic bottles in the light loss 11.9%
more ascorbic acid than samples in the glass
bottle packed stored in light after four months of
storagr at 20 ° C,also samples that were exposed
to light loss more ascorbic acid than those
samples that were not exposed.The results can
(AA)mg/100 ml
50
45
40
35
30
25
20
15
10
5
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
be seen in the same table illustrate that a rise in
storage temperature and time caused an increase
in loss of ascorbic acid.The treatment which
presented the best retention of ascorbic acid was
packed glass bottles in dark stored at 20 ° C. This
results agrees with other authors as Ahmed et
al(1976),Maeda and Mussa(1986), Sattar et al
(1989),Ahyan et al(2001),Esteve et al(2005) and
Zerdin et al(2003).Also there are increasing loss
of ascorbic acid in samples stored in plastic
bottle and thus due to allowing more oxygen
permeation which is consistent with finding by
Kennedy et al (1992).
Figure(2):Ascorbic acid content in orange juice stored in various conditions
time(month)
glass in light 20 c
glass in light 30 c
glass in light 40 c
glass in dark 20 c
glass in dark 30 c
glass in dark 40 c
plastic in light 20 c
plastic in light 30 c
plastic in light 40 c
plastic in dark 20 c
plastic in dark 30 c
plastic in dark 40 c
Fig.(2): Ascorbic acid content in orange juice stored in various conditions.
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