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PHT 612 POST HARVEST MANAGEMENT OF HORTICULTURAL CROPS                                                          (3L+1P) II

Objective

To acquaint with the proper handling technologies of fruits and vegetables to reduce post harvest losses.

Theory

UNIT I
Maturity indices of horticultural crops, composition and structure of fruits and vegetables and their significance with post harvest management.

UNIT II
Harvesting and its relationship with quality, sorting and grading, pre-harvest crop management practices and their influence on quality during storage and marketing.

UNIT III
Respiration, ethylene in post-harvest biology, artificial ripening and de-greening of fruits. Physiology of ripening and senescence. Storage system: on-farm storage-evaporatively cooled stores, ventilated storage, pit storage etc. Refrigerated storage refrigeration cycle, controlled/modified atmosphere, hypobaric storage.

UNIT IV
Application of growth regulators for quality assurance, post-harvest treatments: pre cooling, heat treatments (hot water, hot air and vapor heat), fungicides & biologically safe chemicals, irradiation, curing, pulsing etc. Packing line operations, packaging of horticultural produce. Transportation- rail, road, sea, air. Codex norms for export of perishables.

UNIT V
Post harvest diseases of Hort. Products infection process, factors affecting it; modern methods of controlling decay (use of microbial antagonists their mode of action etc.

Practicals
Morphological features of some selected fruits and vegetables; maturity indices, harvesting techniques of fruits, field visit & identification of spoilage of fruits and vegetables, on-farm storage/ chilling injury, pre-cooling, CA- treatment post harvest treatments to Hort. produce, pre cooling and storage of fruits and vegetables; studies on pre-treatments of selected fruits; use of chemicals for ripening and enhancing shelf life of fruits and vegetables, various storage systems and structures; pre packaging of fruits; GC for ethylene estimation. Pre packaging of vegetables; physiological disorders-chillign injury of banana and custard apple, Electrolyte leakage/membrane permeability/ RWC HPLC analysis.

Suggested Readings