Research >> Achievements |
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Last Updated:(mm/dd/yy) |
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Achievements |
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Mechanization & Process Engineering Division |
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ICAR-IINRG, Ranchi has
developed a set of four machines viz. Lac scraper cum crusher, Lac
washing machine, Lac Grader and Lac winnower for establishing Small
Scale Lac Processing Unit (Capacity-100 kg stick lac day). These machine
can be driven manually or with electric motor. Lac is harvested in form
of lac stick from which lac is scrapped with the help of a knife and
then it is sent to factories in form of sticklac which is the raw
material for lac industries. Lac growers sell sticklac immediately after
scraping at low prices due to associated storage problems and in need of
immediate cash. If sticklac is stored in bags, it forms lump which is
difficult to crush during processing. Further lump formation leads to
deterioration in quality of lac and proper storage of sticklac requires
large space with adequate ventilation. Such facility is not available in
lac grower's houses. Seedlac manufactured from sticklac through primary
processing at village level can be stored like grains in bags or bin for
longer duration without affecting the quality of lac. Application of
such technology for primary processing of lac will lead to value
addition at village/grower level itself.
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ICAR-IINRG, Ranchi has
developed integrated small scale lac processing unit (capacity-100 kg
stick lac/ day) integrating different unit operations i.e. crushing,
grading, presoaking and washing in single unit/system. Bucket conveyors
have been provided in the unit/system for easy transfer of raw materials
in the different units for quick material transfer and minimizing labour
requirement. The unit has washing barrel with tilting mechanism for
batch washing of crushed sticklac and easy removal of wash water and
prepared seedlac. The unit is suitable for up-scaled production of
seedlac from sticklac. Seedlac prepared from sticklac through the
developed unit (ISSLPU) and quality parameters (i.e. flow, life, acid
value and moisture content) of the manufactured seedlac were evaluated
and found to be similar compared with seedlac manufactured through
available small scale lac processing unit (SSLPU).
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Pilot plants for
Technical & Pure Grade Lac Dye (capacity 4 kg & 1 kg per batch), aleuritic
acid (capacity 2 kg/batch) and bleached lac (40 kg/batch) were
established. Process of aleuritic acid extraction from lac resin refined
and yield increased from 13-14% to 17-18%.. Both the pilot plants are used
to impart training to entrepreneurs.
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A rolling tapping device was
developed for guggul tapping from Commiphora wightii.
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Different storage
materials evaluated for lac. Storage in gunny bag is recommended for dried
seedlac (less than 4% moisture content). Seedlac should not be stored
inside metal container or in plastic bags.
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Drying characteristics of seedlac determined and a centrifuge developed for removing excess moisture
from washed seedlac to reduce the drying time.
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@ 2022 National Institute of Secondary Agriculture (ICAR), Ranchi - 834
010, INDIA |
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