POST - HARVEST STUDIES IN BER ( Zizyphus mauritiana Lamk)
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Date
1989
Authors
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ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD
Abstract
Investigations on storage and · ca~dy making of three ber
varieties (Umran, Gola and Seb) were conducted at College of
Agriculture, Rajendcanagar, Hyderabad (Andhra Pradesh) during the
fruiting season 1988-89.
Extens:i. w ~l of shelf life was tried by treating the fruits
with cycocel 1,000 and 2,000 ppm and keepin? the fruits in earthen
~ ots, polyethene bags and zero energy cool chamber. An untreated
control is maintained for comparision. Quality analysis was done
at an interval of three days.
Thi:: results obtained have indil'.!ated that the shelf life
and quality parameters were significantly afiected by storage
period, post-harvest treatments and their interactions. Further,
varieties have also responded differently.
The physiological loss in weight (PLW) increased with
increase in storage period. PLW was least in polyethene bags
followed by zero energy cool chamber. Storage in earthen pots
failed to check PLW. In Gola PLW was more in cycocel treatments.
Total soluble solids declined finally at the end. Fruits
stored in polyethene bags and zero energy cool ~hamber had similar
amounts of TSS. Among the cultivars, irrespective of treatments,
Umran fruits had highest level of TSS, and least in Seb frui~s.
Acidity reached a peak by third day of storage, followed
by a fall after six days of storage and a considerable rise at the
end of storage. Fruits stored in earthen pots and polyethene bags
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had l •ss acidity than control. Cycocel treated fruits of Umr an
registered highest content ui acidity while in Golu. and Seb,
fruits stored in zero energy cool chamii..:r registered hi ghest
acidity. Ascorbic acid declined as the storage period extended
and the d~cline was very drastic in case of Seb, as co~pared to
other two varieties.
T~tal sugars and reducing sugars in stor~J fruits increased
progressively and reached peak by the end of the
experiment. However, the contents of total sugars due to postharvest
treatments were less than that of control. Among the
post-har'Vest treatments cycocel treated fruits of Umran and Gola
had higher level of total sugars, but in Seb, fruits stured in
zero energy cool chamber followed by those treated with cycocel
recorded higher contents. On the other hand, the levels of
reductng sugars were not influenced by various tr~atments
appreciably.
Organoleptic rating was highest at the start of the
experiment and it gradually fell with the progress of t ht!
storage period. Fruits of control treatment lost palatability
rapidly. Wherea1:a fruits kept in zero energy cool chamber
retained better palatability, followed by those kept in
polyethene bags. However the influence of cycocel treatmen t ~;
was not consistent.
For extending the shelf life without loss in quality,
storage in zero-energy cool chamber is most best and ~conomical,
followed by sLorage in polyethene bags.
All the three varieties evaluated were found to be
good for making candy, however, Umran was most suitable
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Keywords
POST, HARVEST, STUDIES, BER, Zizyphus, mauritiana,