Table 5.2 (continued)
Food or cultivar/Reference
MF or EF treatment
Result
Seedlings of moringa (Two
species Moringa oleifera
and Moringa peregrina)/
Hasan et al. (2018)
MW (Tap water after
magnetization through
passing in a magnetron of 30
mT, output 4–6 m
3 h
−1
)
under medium (MS) and
severe (SS) drought stress
(#) TPC lower in both
species. M. olifera and M.
peregrine seedlings exposed
to MS, SS increased TPC by
20, 30 and 13, 29% under
tap water, however,
decreased by 11%, 15% and
16%, 21% with MW
(#) TFC and AC. Similar
pattern than TPC
Lens (Lens culinaris L.)
plants and seeds/(Azimi
et al. (2018)
MW. Tap water was treated
by the magnetic field of 110
mT
TPC, TAC, and proline in
the leaf of both control and
MW-treated plants were
identical
(") AC. The Ferric reducing
antioxidant power in plant
and seeds leaves was
significantly increased by
MW
(") TCC. Noticeably
increased in leaf by MW
No significant difference was
observed between TFC and
TAC of seeds of both groups
( #) TPC and proline.
Significantly lower than
control in seeds
Blackberries. Wild (Rubus
sulcatus Vest) and cultivated
(Rubus fruticosus
Thornfree)/Răcuciu and
Oancea (2018)
MF. Homogenous 50 Hz
MF with 3 mT magnetic flux
density at 1, 2, 4, 6, and 12 h
exposure times
(") TAC. 9–33% in wild
blackberries and 30–129% in
cultivated ones depending of
irradiation time. The highest
with 1 h, both in wild and
cultivated. Long MF
exposure (12 h) caused a
decrease in wild blackberries
by 20% compared to control
(") TPC. 5–27% in wild
blackberries and 6.5–63% in
cultivated ones depending of
irradiation time. The highest
of both was recorded after
1 h
Enhanced levels of TAC and
TPC of blackberries were
obtained for samples
exposed to homogeneous
magnetic field (50 Hz, 3 mT)
for relatively short times (1–
6 h) compared to control
Used abbreviations MW Magnetized water, MF Magnetic field, PEF Pulsed electric field, AC
Antioxidant capacity, TCC Total carotenoid content, TPC Total phenolic content, TFC Total
flavonoid content, TAC Total anthocyanin content, DW dry weight, FW fresh weight, (") increment
of, (#) decrement of
5 Role of Stress and Defense in Plant Secondary Metabolites …
165
Food or cultivar/Reference
MF or EF treatment
Result
Seedlings of moringa (Two
species Moringa oleifera
and Moringa peregrina)/
Hasan et al. (2018)
MW (Tap water after
magnetization through
passing in a magnetron of 30
mT, output 4–6 m
3 h
−1
)
under medium (MS) and
severe (SS) drought stress
(#) TPC lower in both
species. M. olifera and M.
peregrine seedlings exposed
to MS, SS increased TPC by
20, 30 and 13, 29% under
tap water, however,
decreased by 11%, 15% and
16%, 21% with MW
(#) TFC and AC. Similar
pattern than TPC
Lens (Lens culinaris L.)
plants and seeds/(Azimi
et al. (2018)
MW. Tap water was treated
by the magnetic field of 110
mT
TPC, TAC, and proline in
the leaf of both control and
MW-treated plants were
identical
(") AC. The Ferric reducing
antioxidant power in plant
and seeds leaves was
significantly increased by
MW
(") TCC. Noticeably
increased in leaf by MW
No significant difference was
observed between TFC and
TAC of seeds of both groups
( #) TPC and proline.
Significantly lower than
control in seeds
Blackberries. Wild (Rubus
sulcatus Vest) and cultivated
(Rubus fruticosus
Thornfree)/Răcuciu and
Oancea (2018)
MF. Homogenous 50 Hz
MF with 3 mT magnetic flux
density at 1, 2, 4, 6, and 12 h
exposure times
(") TAC. 9–33% in wild
blackberries and 30–129% in
cultivated ones depending of
irradiation time. The highest
with 1 h, both in wild and
cultivated. Long MF
exposure (12 h) caused a
decrease in wild blackberries
by 20% compared to control
(") TPC. 5–27% in wild
blackberries and 6.5–63% in
cultivated ones depending of
irradiation time. The highest
of both was recorded after
1 h
Enhanced levels of TAC and
TPC of blackberries were
obtained for samples
exposed to homogeneous
magnetic field (50 Hz, 3 mT)
for relatively short times (1–
6 h) compared to control
Used abbreviations MW Magnetized water, MF Magnetic field, PEF Pulsed electric field, AC
Antioxidant capacity, TCC Total carotenoid content, TPC Total phenolic content, TFC Total
flavonoid content, TAC Total anthocyanin content, DW dry weight, FW fresh weight, (") increment
of, (#) decrement of
5 Role of Stress and Defense in Plant Secondary Metabolites …
165