Flashcards
MA, CA and WC
Cards in this deck (13)
- 1CA is acceptable for organic crops, whilst 1-MCP may replace CA in non-organic crops. Ref?Prangle et al 2005
- 2The size of the holes in packaging must be relative to... and ref...Product
Film
Distribution Temperature
Danish Technological Institute 2008 - 3By how much does O2 levels need to be reduced before a resp reduction is seen?Needs to be halved eg 10%. Too low leads to anaerobic conditions
- 4CO2 % is 0.03. How much does it need to increase by to reduce resp?1-3%
Apples damaged if >3%
Strawberries tolerate upto 30% - 5CO2 in water gives what?Carbonic acid
- 65 physiological orders which can occur with CA/MABrowning
Internal disorders
Off flavours
Increased rots
Irregular ripening - 7O2 reduces whilst CO2 increases over time in MA. RefNobile et al 2006
- 8Why gas flush, and optimal mix?Reduce time to equilibrium
CO2 O2 and N2 - 9What are the ideal MC conditions for wheat70% RH
15% MC - 103 Drying methodsBatch
Continuous
On-floor bulk - 11How is MC controlled in perishablesincrease RH% >90%
reduce air movement - fans are still required for hot spots - 12Condensation causes...rotting
splitting - 13Reducing temperature fluctuations is done by reducing...?Water loss
condensation
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- PHT Flashcards on MA, CA and WC, created by labradorlass on 05/06/2013.
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- labradorlass
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