TESTING AND PERFORMANCE EVALUATION OF SUB-BARIC STORAGE BIN FOR FOOD GRAIN STORAGE
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Date
2019-08-03
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE
Abstract
The sub-baric storage bin was tested for leak proofness and safety using hydraulic
pressure and vacuum drop test and results revealed that the bin has no explosion and
implosion. The D-value experiment for pulse beetle was carried out under 640 mm Hg
and recorded as 10 min. To evaluate the performance of SBSB at 600+50 mm Hg, rice
grains resided in SBSB and gunny bag for two months. Sampling was done for fresh
sample and at 15 days interval. Red gram grains were stored in the SBSB and plastic
containers for one month. Sampling was done for fresh sample and at 10 days interval.
Samples analyzed for nutritional composition, colour, water activity, grain damage (for
rice), insect identification (for rice) and seed germination rate (for red gram) at
predetermined interval. Results showed that SBSB provided better retention of nutritional
composition of grains. There were no variations in colour of grains under both storages.
The SBSB resulted in lower water activity. Tribolium castaneum was identified in
control and no insect in SBSB. No grain damage in SBSB and 294 damaged grains per
500 g in control. The dispersed solids in gruel for rice stored in SBSB were less i.e., 2.8%
compared to control i.e., 3.6%. The SBSB resulted in good sensory quality of cooked
rice. The highest germination rate of red gram in SBSB i.e., 93, 91, 91% compared to
control i.e., 86, 85 and 76% for 10, 20 and 30 day respectively. The Benfit-Cost ratio of
SBSB was 1.5:1.
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