A pomegranate peel extract (PGE) was evaluated as a natural antifungal preparation for the control of
postharvest rots. In vitro trials revealed a strong fungicidal activity against germination of conidia of
Botrytis cinerea, Penicillium digitatum and Penicillium expansum. Almost complete inhibition of all fungal
spore germination was achieved after 20 h of incubation with PGE. PGE was very effective in inhibiting
decay following artificial inoculations of lemons by P. digitatum and Penicillium italicum, grapefruits by P.
italicum and apples by P. expansum . At concentrations of 1.2 and 12 g/l complete inhibition of infection
was achieved in the majority of host pathogen combinations. Furthermore, it was also effective in
reducing natural rots under semi-commercial conditions on both sweet cherries and lemons: on cherries
Monilinia laxa and B. cinerea rots were reduced by 61.0% (cv. Bigarreau Moreau) and 95.6% (cv. Giorgia),
respectively, and on lemons 87.8% reduction of total rot was achieved. PGE treatment showed residual
effect as it was effective in inhibiting infections made at 6,12, and 24 h after the application of the extract
in fruit wounds. Additionally, PGE exhibited curative activity and reduced the incidence of rots when it
was applied 6 and 24 h after inoculation. Considering that PGE was extracted and stabilized using safe
chemicals (food grade ethanol and citric acid) and that it did not have any apparent phytotoxic effect on
treated fruit, PGE proved to be effectively eco-friendly and safe control mean for postharvest rots of fruit
A pomegranate peel extract (PGE) was evaluated as a natural antifungal preparation for the control ofpostharvest rots. In vitro trials revealed a strong fungicidal activity against germination of conidia ofBotrytis cinerea, Penicillium digitatum and Penicillium expansum. Almost complete inhibition of all fungalspore germination was achieved after 20 h of incubation with PGE. PGE was very effective in inhibitingdecay following artificial inoculations of lemons by P. digitatum and Penicillium italicum, grapefruits by P.italicum and apples by P. expansum . At concentrations of 1.2 and 12 g/l complete inhibition of infectionwas achieved in the majority of host pathogen combinations. Furthermore, it was also effective inreducing natural rots under semi-commercial conditions on both sweet cherries and lemons: on cherriesMonilinia laxa and B. cinerea rots were reduced by 61.0% (cv. Bigarreau Moreau) and 95.6% (cv. Giorgia),respectively, and on lemons 87.8% reduction of total rot was achieved. PGE treatment showed residualeffect as it was effective in inhibiting infections made at 6,12, and 24 h after the application of the extractin fruit wounds. Additionally, PGE exhibited curative activity and reduced the incidence of rots when itwas applied 6 and 24 h after inoculation. Considering that PGE was extracted and stabilized using safechemicals (food grade ethanol and citric acid) and that it did not have any apparent phytotoxic effect onถือผลไม้ PGE ที่พิสูจน์แล้วว่ามีประสิทธิภาพมิตรและหมายควบคุมที่ปลอดภัยสำหรับ rots หลังการเก็บเกี่ยวของผลไม้
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