storage of f & v

8/3/2019 Storage of F & V

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STORAGE OPERATIONS FOR

FRUITS AND VEGETABLES


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INTRODUCTION

Fresh fruits and vegetables have a highermoisture content.

Post harvest behavior depends on variouspre- harvesting conditions.

Factors affecting fruits and vegetables

Temperature -

Relative humidity Light -Texture of soil - Rainfall and Soil

management.


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AIM OFSTORAGE

To control the rate of Transpiration- Respiration

- Disease

To control life process Germination

- Discoloration

- Toughening

Processing

Preservation


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IMPORTANCE OF STORAGE

Quality

Shelflifestability

FACTORS AFFECTINGSTORAGEo Harvestandhandlingpractices

o Precooling

o Variety

o Stageofmaturity

o Cleanliness


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CLASSIFICATION OF STORAGE

OPERATIONS


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Natural Storage Operation

Definition :

Any storage conditions without anyartificial means which is used to store

the produce It aims at letting the fruit mature or

ripen on the plant as long as possible by

delaying the harvest . Eg : Potato , Sweet Potato, Yam, Ginger,

Banana


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Artificial Storage Operations

Classifiedintomanytypes:

Fieldstorage Ventilatedstorage

Cellarstorage


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FieldStorage

Fieldisthestoragearea

Donebydiggingpitsortrenches

T

hey are dug in the ground and thevegetables are stored in them afterbeing covered with soil, on the surface.

Thepitiscoveredbyhayorstraw,inordertoprotectfromwaterleakageorfreezing.


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StructureofFieldStorage

On both sides tunnelsare dug

After the vegetables

are stored with straw(12 layer)

And then soil is coveredwith hay or straw to( 8-

12) Then the top is covered

by stone


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Advantages:Can be done any where and at any time

in the whole field

Suitable for short term storageDisadvantages:

Quality is affected by weather or soil

conditionsPests can easily penetrate into the

storage area


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Ventilated Storage Operation

Used for the storage of produce with along storage potential, such as roots andtubers, pumpkins, onions and hard white

cabbage. Such stores must be designed and built

specifically for each intended location.

The free circulation of air through thestructure and its contents is necessary.


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Ventilated storage


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Cellar Storage

A structure built underground orpartially underground, used to store

fruits and vegetables.

Root cellar - type of cellar which is used

to store food at low temperature andsteady humidity.

storage of f & v

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