Az élelmiszerek rosttartalmának antioxidáns hatása = Antioxidant effect of the fibre content of foods
2018
Absztrakt: Az antioxidansok az egeszsegre szamos kedvező hatassal rendelkeznek, amelyek
kozul napjainkig keves figyelem iranyult az elelmi rost antioxidans
tulajdonsagaira. Az elelmi rost antioxidans hatasa mogott az azt alkoto
poliszacharidkomplexhez kapcsolt polifenolvegyuletek allnak, amelyek a
belcsatornaban felszabadulva fejtik ki hatasukat. Novenyi sejtfalbol izolaltak
egy, az előbbiektől elterő molekulat, a kalcium-fruktoboratot, amelynek szinten
van antioxidans kapacitasa, annak aktiv komponense azonban a bor. Szamos olyan
elelmiszer es elelmiszeripari mellektermek ismert, amelynek jelentős antioxidans
elelmirost-tartalma van, igy ezek is hozzajarulhatnak a belcsatorna, ennek reven
a szervezet antioxidans vedelmehez. Ilyenek peldaul a gabonamagvak, a kaposzta,
a kavebab es a guava, vagy a mellektermekek kozul a szőlőtorkoly. Az antioxidans
elelmi rost polifenolvegyuletei az egyes novenyekben elterőek, igy azok
antioxidans kapacitasa is valtozo, de grammonkent hozzavetőlegesen 50–100 mg
DL-α-tokoferollal egyenertekűek. Ez olyan szamottevő antioxidans kapacitas,
amely alkalmassa teszi az antioxidans elelmi rostot egyes, bizonyitottan
oxidativ stressz altal kivaltott betegsegek, igy peldaul az atherosclerosis,
egyeb cardiovascularis korkepek vagy a colorectalis carcinoma elleni
prevencioban. Orv. Hetil. 2018; 159(18): 709–712.
| Abstract: Antioxidants have some health benefit, but up to now there was less attention
paid to the antioxidant properties of dietary fibre. The antioxidant effect of
dietary fibre is based on the polyphenol compounds bound to polysaccharide
complexes, which are released in the gut and functioning as antioxidants.
Another type of antioxidant, calcium fructoborate was also isolated from plant
cell wall. It has a marked antioxidant capacity, however, its active component
is not a polyphenol, but the boron. There are lots of food plants which have
relatively high antioxidant dietary fibre content, thus they support the
antioxidant defence of the gastrointestinal tract, and consequently the whole
body. The important ones in human nutrition are for instance cereal grains,
cabbage, grape pomace, coffee bean or guava. There are different polyphenol
compounds in the antioxidant dietary fibres in the plants, therefore their
antioxidant capacity varies, but it is approximately equivalent to 50–100 mg
DL-α-tocopherol per gram. This antioxidant capacity is considerable, and would
be suitable for the prevention of some, oxidative stress-related diseases, such
as atherosclerosis or other cardiovascular diseases, and colorectal carcinoma.
Orv Hetil. 2018; 159(18): 709–712.
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