Lesson 1.1 Flashcards
A reference to the amount of moisture present in a material.
Moisture content (MC)
The presence of a liquid, especially water, often in trace amounts. It is defined as water in the adsorbed of absorbed phase.
Moisture
The art of measuring the moisture content of air
Psychrometry
The ambient air temperature that is measured by regular thermometers
dry bulb temperature
Measured by thermometers that are wrapped in wetted wicks.
wet bulb temperature
A measure of the water vapor content of air.
Relative humidity (RH)
Cooling process, the removal of unwanted heat from a selected object, substance, or space and its transfer to another object, substance, or space.
Refrigeration
Sometimes called “refrigerated warehouses”. Designed for preserving the integrity and shelf life of products that don’t need to be frozen.
Cold storage facilities
It is defined as any processing activity that is or can be done on the farm or by local enterprises in which the farmer has an active interest.
Agricultural processing
It is the general term applied to the handling of crops, whether used for food or other purposes such as seeds, fiber, botanical pesticides and the like, from harvest up to the time they reach the final consumer. It is subdivided into two: primary and secondary processing.
Postproduction
Any activity that involves the handling of crops to make them more suitable to manufacturers, processors or consumers and can still be changed into other forms. The original plant part can still be recognized. It includes raw material handling and minimal processing. Raw material handling is the postharvest handling of fruits and vegetables specifically intended for food processing, and of florist crops for making dried art forms. Minimal processing is the postharvest handling of fruits and vegetables that have been peeled, sliced, cut and packaged in a form that is ready to cook or to eat uncooked.
Primary processing
A postproduction activity that involve conversion of harvested crops into stable products that can no longer be changed into other forms. It is also referred to as full processing. Secondary processing includes industrial processing (manufacture of chocolate powder, candies, instant coffee), production of medicinal products from plants (manufacture of antibiotics), and production of dried plant arts (production of art forms from dried plant parts).
Secondary processing
These are crops having very high moisture content (MC) ranging from 75 90%, hence do not last for more than a week under ordinary conditions. Example of perishable crops: fruits, vegetables, florist crops, florist greens, young coconut, herbs, roots and bulb crops (slightly perishable crops).
Perishables
These are crops whose MC can be brought down to a low level (14%), thus the crops could last for a year. Example of durables: cereals and grains.
Durables
What is under Traditional Harvesting System
Manual Reaping
Manual Threshing
