Dietary intake of
polyphenols and vitamins before surgery may have beneficial effect on survival
of the patients. Table beet (Beta
vulgaris L. var. rubra) contains
bioactive agents, which have a wide range of different physiologic effects.
These agents have beneficial antioxidant properties. The aim in the present
study was to determine the gut protecting properties of bioactive substances of
table beet in a model of ischaemic-reperfusion injury of the rat liver.
Chemiluminescent intensity, H-donating ability, reducing power and free
SH-group concentracion were determined by luminometry and spectrophotometry in
duodenum and plasma. Lyophilized table beet increased significantly the free
radical scavenging property of the plasma measured by chemiluminometry. Other
antioxidant parameters of the plasma increased in rats fed table beet diet, and
change in reducing power was significant. Beneficial effect of the treatment
was found in changes of total scavenger capacity of the duodenum during
ischaemia-reperfusion injury. H-donating ability and reducing power of the gut
decreased in the table beet-fed group during ischaemia-reperfusion compared to
normal group with ischaemia-reperfusion. Based on these data, it can be
concluded that table beet can protect the entire body from the oxidative damage
caused by ischaemia-reperfusion of the liver, but the effect of table beet
treatment on gut mucosa needs further investigation.