Post-Harvest Technology Flashcards
6 cards from real Agricultural/Bioengineering practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Post-Harvest Technology flashcards as text
In grain aeration, the purpose of running fans in the fall is to:
Answer: Cool grain to reduce insect activity and spoilage over winter
Fall aeration cools stored grain to temperatures that inhibit insects, mold, and respiration during long-term storage.
Ethylene gas plays what role in fruit post-harvest management?
Answer: Triggers ripening and senescence in climacteric fruits
Ethylene is a plant hormone that accelerates ripening, color development, and senescence in climacteric fruits such as bananas and apples.
Which milling process for wheat produces flour by gradually reducing grain through multiple roller passages?
Answer: Roller milling (gradual reduction)
The gradual reduction roller mill system separates bran from endosperm in stages to produce refined wheat flour.
Chilling injury in tropical fruits such as bananas and tomatoes is caused by:
Answer: Exposure to temperatures below their critical threshold but above freezing
Tropical fruits are damaged by chilling temperatures (typically 50–55°F for bananas) that disrupt cell membrane function without freezing.
Bulk density of grain is important for bin storage design because it affects:
Answer: Calculation of bin capacity and structural load
Bulk density (test weight) determines how much mass a given bin volume holds and the load on bin floors and walls.
The Hazard Analysis and Critical Control Points (HACCP) system in post-harvest food safety is designed to:
Answer: Identify and control biological, chemical, and physical hazards in food processing
HACCP is a systematic preventive approach to food safety that identifies critical control points where hazards can be prevented or reduced.