Control of spoilage and ripening in mango fruit by zineb and sodium diethyldithiocarbamate.
Subramanyam H., Moorthy N. V. N.
Author Affiliation: Central Food Technological Research Institute, Mysore, India.
Pesticide Science 4 : 25-31
Abstract : Alphonso and Pairi mangoes were dipped for 5 min in hot water (52 deg C) either alone or + zineb (0.375%) 1 or 7 days after harvest, or in hot water + sodium diethyldithiocarbamate (0.4%) 7 days after harvest, after which they were air dried and held at 24 deg . Hot water + zineb applied 1 day after harvest improved colour, texture and aroma after 7 days, but the onset of the climacteric was delayed. Early water treatment alone had a similar effect after 15 days, as did both these treatments when applied 7 days after harvest. Losses due mainly to stem-end rot/anthracnose (Colletotrichum gloeosporioides) were greatly reduced by hot water + zineb applied early, and with this treatment fruits could be held for 18 days without deterioration. Of the treatments applied 7 days after harvest hot water + sodium diethyldithiocarbamate gave the best results. Hot water alone also gave good control when applied early. Data are also tabulated on the effects of hot water either alone or + zineb on the pH and chemical composition of the fruits.