. Total phenols content
Results from the determination of total phenols are
shown in Fig. 2. At the beginning, total phenols concentration
was 0.12 lmol g1 fresh tissue. At 0 and 4 C, the
proportion of soluble phenols did not vary substantially
with time. In the product stored at 10 C, a slight increase
(p < 0.05) was observed at the day 21, of some
19%.
Ke and Saltveit (1988) have observed a marked elevation
in the total soluble phenols content for iceberg lettuce
exposed to several kinds of stress (attack of
pathogens, ethylene treatment), under conditions causing
no variations in the control samples. Babic, Amiot,
Nguyen-The, and Aubert (1993a) observed an increase
of phenols in ready-to-use carrots, as a response to processing-induced
damage. In turn, Amanatidou, Slump,
Gorris, and Smid (2000) found an 8-fold increase in total
phenols concentration in carrot discs stored in air for
12 days at 8 C. The authors indicated that phenols
build up as a physiological response to infections and
damage.
Storage time seemed to influence quality of minimally
processed celery stored for extended periods, as it led to
increased total phenols concentration at 10 C. A temperature
of 0 C would lessen such a manifestation
. Total phenols content
Results from the determination of total phenols are
shown in Fig. 2. At the beginning, total phenols concentration
was 0.12 lmol g1 fresh tissue. At 0 and 4 C, the
proportion of soluble phenols did not vary substantially
with time. In the product stored at 10 C, a slight increase
(p < 0.05) was observed at the day 21, of some
19%.
Ke and Saltveit (1988) have observed a marked elevation
in the total soluble phenols content for iceberg lettuce
exposed to several kinds of stress (attack of
pathogens, ethylene treatment), under conditions causing
no variations in the control samples. Babic, Amiot,
Nguyen-The, and Aubert (1993a) observed an increase
of phenols in ready-to-use carrots, as a response to processing-induced
damage. In turn, Amanatidou, Slump,
Gorris, and Smid (2000) found an 8-fold increase in total
phenols concentration in carrot discs stored in air for
12 days at 8 C. The authors indicated that phenols
build up as a physiological response to infections and
damage.
Storage time seemed to influence quality of minimally
processed celery stored for extended periods, as it led to
increased total phenols concentration at 10 C. A temperature
of 0 C would lessen such a manifestation
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