The Longissimus lumborum muscle from the rabbits fed the flax
sprouts had higher TBARS values (Table 6). The enhanced susceptibility
of meat to lipid peroxidation ismost likely due to the different fatty acid
profile of the feed and the producedmeat, as well as the vitamin E content
of themuscle. Flax sproutswere characterized by a high proportion
of linolenic acid; however, the amount of antioxidants may not have
been adequate to compensate for the pro-oxidant thrust induced by
higher PUFA contents. The lower solid feed intake of these animals
resulted in a reduction in α-tocopherol acetate and α-tocopherol levels
(approximately −6% and 4%, respectively) and a greater ingestion of
PUFAs, which led to an imbalanced oxidative status. Our hypothesis is
that the higher degree of unsaturation of the meat of the rabbits fed
flax sprouts led to an increased consumption of antioxidants in the
muscle cell membrane (Dalle Zotte and Szendrő, 2011).
Themeat fromthe alfalfa group, despite having higher α-tocopherol
levels, had similar TBARS values as the meat of the control group. It is
likely that the previously mentioned hypothesis could also apply to
the alfalfa group.
The factorial analysis clearly confirms such assumption: TBARS
values were on the same order of magnitude as the levels of PUFA n-3
(Fig. 1), whereas α-tocopherol and α-tocotrienol levels were two-fold
higher. The enrichment of meat with significant amounts of n-3 (+32%
and +73% for alfalfa and flax sprouts, respectively) renders the meat
more unstable (TBARS and n-3 are closely characterized in Factor 1),
even if levels of the main antioxidants concomitantly increased (Factor
2; 52% and 15% for alfalfa and flax sprouts, respectively).
Lipid oxidation in meat is associatedwith the development of rancid
flavor, odor, drip loss, and a concomitant reduction in the acceptability
and nutritional quality of it (Buckley, Morrissey & Gray, 1995).
The Longissimus lumborum muscle from the rabbits fed the flaxsprouts had higher TBARS values (Table 6). The enhanced susceptibilityof meat to lipid peroxidation ismost likely due to the different fatty acidprofile of the feed and the producedmeat, as well as the vitamin E contentof themuscle. Flax sproutswere characterized by a high proportionof linolenic acid; however, the amount of antioxidants may not havebeen adequate to compensate for the pro-oxidant thrust induced byhigher PUFA contents. The lower solid feed intake of these animalsresulted in a reduction in α-tocopherol acetate and α-tocopherol levels(approximately −6% and 4%, respectively) and a greater ingestion ofPUFAs, which led to an imbalanced oxidative status. Our hypothesis isthat the higher degree of unsaturation of the meat of the rabbits fedflax sprouts led to an increased consumption of antioxidants in themuscle cell membrane (Dalle Zotte and Szendrő, 2011).Themeat fromthe alfalfa group, despite having higher α-tocopherollevels, had similar TBARS values as the meat of the control group. It islikely that the previously mentioned hypothesis could also apply tothe alfalfa group.The factorial analysis clearly confirms such assumption: TBARSvalues were on the same order of magnitude as the levels of PUFA n-3(Fig. 1), whereas α-tocopherol and α-tocotrienol levels were two-foldhigher. The enrichment of meat with significant amounts of n-3 (+32%and +73% for alfalfa and flax sprouts, respectively) renders the meatmore unstable (TBARS and n-3 are closely characterized in Factor 1),even if levels of the main antioxidants concomitantly increased (Factor2; 52% and 15% for alfalfa and flax sprouts, respectively).Lipid oxidation in meat is associatedwith the development of rancidflavor, odor, drip loss, and a concomitant reduction in the acceptabilityand nutritional quality of it (Buckley, Morrissey & Gray, 1995).
การแปล กรุณารอสักครู่..
