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BIOLOGICALLY SAFE APPROACHES TO CONTROL SAPBURN, CHILLING INJURY AND POSTHARVEST DISEASES OF MANGO

KrishiKosh

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Title BIOLOGICALLY SAFE APPROACHES TO CONTROL SAPBURN, CHILLING INJURY AND POSTHARVEST DISEASES OF MANGO
Ph D
 
Creator KALYAN BARMAN
 
Contributor Ram Asrey
 
Subject Mango, sapburn, desapping, firmness, antioxidant capacity, ascorbic acid, phenolics content, carotenoids content, enzyme activity, quality parameters
 
Description T-8682
Sapburn injury in mango is regarded as the most serious problem as it reduces
the cosmetic appeal and downgrade the fruit quality with considerable economic
losses. For the control of sapburn injury, physiologically mature mango fruits of cv.
Chausa were harvested along with 5 - 8 cm pedicel attached. Immediately after
harvesting, fruits were de-stemmed and treated with different desapping agent
solutions [calcium hydroxide (1%), sodium hydroxide (1%) and alum (0.5 and 1%)]
by dipping them for 5 minutes. In control fruits, the pedicels were removed and sap
was allowed to spread freely over the fruit surface. After treatment application, fruits
were air-dried and stored at ambient condition (30º ± 2ºC) for 12 days. Among the
treatments, fruits desapped with sodium hydroxide (1%) followed by alum (0.5%)
showed significantly lower sapburn injury than that of control. Respiration and
ethylene evolution rates were also significantly suppressed and delayed with sodium
hydroxide (1%) treatment. Fruit firmness and functional properties like, ascorbic acid,
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total carotenoids, phenolics content and antioxidant capacity were also found higher
in sodium hydroxide (1%) treated fruits. Pectin methyl esterase and polygalacturonase
enzyme activity were recorded higher in fruits of control and calcium hydroxide
treatment however; it was suppressed by sodium hydroxide and alum treatments.
Among fruit quality parameters, higher total soluble solids, total sugars, colour
development and lower titratable acidity were found in calcium hydroxide treated
fruits. Disease incidence was also found lowered by sodium hydroxide treatment.
 
Date 2016-09-08T19:02:01Z
2016-09-08T19:02:01Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/76172
 
Format application/pdf
 
Publisher IARI, DIVISION OF POST HARVEST TECHNOLOGY