treatment induced significantly (P < 0.05) higher SOD activity on
the 1st and 2nd day compared with the control (Fig. 4A). The activity
of CAT increased slightly during the first day of incubation and
then decreased in the following 2 days. Fruit treated with B. cereus
AR156 maintained significantly (P < 0.05) higher CAT activity on
the 2nd and 3rd day of incubation (Fig. 4B). APX activity decreased
during the incubation, B. cereus AR156 treatment significantly
(P < 0.05) inhibited the activity of APX on the 1st and 3rd day of
incubation (Fig. 4C). The level of H2O2 in both control and B. cereus
AR156 treated fruit increased during the inoculation. B. cereus
AR156 treatment promoted the accumulation of H2O2, and significantly
(P < 0.05) higher H2O2 content was observed in fruit treated
with B. cereus AR156 on the 2nd day of incubation (Fig. 4D).
3.5. Effects of B. cereus AR156 treatment on activities of PAL, PPO and
POD in peach fruit
PAL activity in control fruit increased slightly during storage. B.
cereus AR156 treatment promoted the increase and maintained
significantly (P < 0.05) higher PAL activity during the whole storage
period compared to the control fruit (Fig. 5A). POD and PPO activities
increased with storage. B. cereus AR156 treatment significantly
(P < 0.05) increased their activities (Fig. 5B and C).
3.6. Effects of B. cereus AR156 treatment on total phenolic content and
DPPH radical-scavenging activity in peach fruit
The level of total phenolic compounds in control fruit decreased
gradually during storage. B. cereus AR156 treatment induced the
accumulation of total phenolic content and resulted in significantly
(P < 0.05) higher level of total phenolic content in the B. cereus
AR156 treated fruits than that in control fruit during the whole
storage (Fig. 6A). DPPH radical-scavenging activity in control fruit
increased slightly during storage, while that in B. cereus AR156
treated fruit increased rapidly and reached a peak on the 1st day,
and then decreased during the rest period of storage, but still kept
significantly (P < 0.05) higher than that in the control fruit (Fig. 6B).
treatment induced significantly (P < 0.05) higher SOD activity on
the 1st and 2nd day compared with the control (Fig. 4A). The activity
of CAT increased slightly during the first day of incubation and
then decreased in the following 2 days. Fruit treated with B. cereus
AR156 maintained significantly (P < 0.05) higher CAT activity on
the 2nd and 3rd day of incubation (Fig. 4B). APX activity decreased
during the incubation, B. cereus AR156 treatment significantly
(P < 0.05) inhibited the activity of APX on the 1st and 3rd day of
incubation (Fig. 4C). The level of H2O2 in both control and B. cereus
AR156 treated fruit increased during the inoculation. B. cereus
AR156 treatment promoted the accumulation of H2O2, and significantly
(P < 0.05) higher H2O2 content was observed in fruit treated
with B. cereus AR156 on the 2nd day of incubation (Fig. 4D).
3.5. Effects of B. cereus AR156 treatment on activities of PAL, PPO and
POD in peach fruit
PAL activity in control fruit increased slightly during storage. B.
cereus AR156 treatment promoted the increase and maintained
significantly (P < 0.05) higher PAL activity during the whole storage
period compared to the control fruit (Fig. 5A). POD and PPO activities
increased with storage. B. cereus AR156 treatment significantly
(P < 0.05) increased their activities (Fig. 5B and C).
3.6. Effects of B. cereus AR156 treatment on total phenolic content and
DPPH radical-scavenging activity in peach fruit
The level of total phenolic compounds in control fruit decreased
gradually during storage. B. cereus AR156 treatment induced the
accumulation of total phenolic content and resulted in significantly
(P < 0.05) higher level of total phenolic content in the B. cereus
AR156 treated fruits than that in control fruit during the whole
storage (Fig. 6A). DPPH radical-scavenging activity in control fruit
increased slightly during storage, while that in B. cereus AR156
treated fruit increased rapidly and reached a peak on the 1st day,
and then decreased during the rest period of storage, but still kept
significantly (P < 0.05) higher than that in the control fruit (Fig. 6B).
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