UNIT 1:
Threshing - traditional methods
mechanical threshers -Types-principles and operation
measurement - direct and indirect methods- moisture meters
equilibrium moisture content
Engineering properties of agricultural produce
Post harvest engineering - introduction - objectives
Post-harvest losses of cereals, pulses and oilseeds - importance
UNIT 2:
Cylinder separator, spiral separator
Cylinder separator, spiral separator
magnetic separator, colour sorter, inclined belt separator
Principles, air screen cleaners: types, adjustments
Different types of graders for cereals, pulses and oil seed crops.
Drying: principles and theory of drying, thin layer and deep bed drying
Drying: principles and theory of drying, thin layer and deep bed drying
selection, construction, operation and maintenance of dryers, design of dryers
hot air drying, methods of producing hot air
UNIT 3:
chain conveyor, bucket elevators
belt conveyor, screw conveyor
Direct and indirect types of damages
types of storage structures: vertical, horizontal and underground storages
storage structure Designs
UNIT 4:
Paddy processing: parboiling of paddy
methods, merits and demerits
rice polishers: types, constructional details polishing
Wheat milling, pulse milling methods
dehusking of paddy- methods, merits and demerits
layout of modern rice mill
performance evaluation of modern mills
Oil seed processing, Sugarcane crushing, extraction recovery and processing of jaggery
Principles and operation: maize sheller, husker sheller for maize, groundnut decorticator, castor sheller
UNIT 5:
Blanching of fruits and vegetables
Thermal processing of fruit pulps.
Controlled atmospheric storage
Modified atmospheric storage
shrink film storage of fruits and vegetables
Physical and thermal properties of fruits and vegetables
maturity indices for fruits, cleaning and grading of fruits and vegetables.
Electronic colour sorting of fruits and vegetables
Unit operation of fruit processing
