Coffee Beans Classification by defect
What is a defect
Defective bean |
any coffee bean which is not wholesome or sound, ie has been damaged physically or chemically |
Defects |
describes the quality factor based on physical appearance (defective beans) including extraneous matter |
Black beans |
coffee beans which are wholly black |
Extraneous matter |
anything other than coffee beans, and in case of Arabica coffee, Robusta beans are considered extraneous matter |
Unhulled coffee |
coffee not removed from the dried cherry (where the husk is not removed during the process of hulling) |
Insect damaged |
coffee beans which have been damaged or eaten by insects or weevils |
Pin Hole |
pinholed coffee beans by insects |
Chalky white |
coffee beans whitish in colour and usually light weight |
Discoloured |
coffee beans with brown, black discolouration |
Withered, malformed, shrivelled |
coffee beans showing abnormal shapes resulting from growth defects, eg weather and nutritive deficiency |
Badly broken |
coffee beans that are broken, during handling, into less than three quarters |
Possible defects
Black bean |
Broken bean |
Cherry |
Diseased bean |
Dried-out bean |
Eaten bean |
Half-black bean |
Husk (Large) |
Husk (Small) |
Parchment bean |
Quaker |
Shell |
Sour bean |
Stone, twig or hull (large) |
Stone, twig or hull (medium) |
Stone, twig or hull (small) |
Undesirable bean |
Unripe Bean |