الفهرس 
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Abstract
For a long time benzoic acid and its sodium salt has
additive to certain food
been used as protect them
an from deterioration
caused products to
by spoilage
organisms. The Vicia faba root meristem test system isused to
72 hour intact primary roots of Vicia faba L.
Giza 2 were treated for 24,
48, 72 and 96 h with
different sodium benzoate concentrations (0.00%, 0.01%,
’0.05% and the permissible 0.10%) dissolved in 2 liters of
distilled water containing 3% (w/v) agar agar. Then the
seedlings were transferred to plain agar agar to test the
effect of recovery from sodium benzoate treatments for
further 24 and 48 h. The experiment was carried out in an
incubator adjusted at 23 ±2°C. Mitotic activity, rate of
aberrant dividing and nondividing cells as well as.