METHOD OF BERRY EXOCARP TEST FOR TENSION Russian patent published in 2008 - IPC G01N33/02 

FIELD: agriculture.

SUBSTANCE: invention refers to methods of given berry exocarp test for tension and can be used for strength characterization in food industry as well as in agriculture to evaluate storage stability, methods of berries handling and for selection. Method includes measurement of greater transverse diameter of each berry and cutting of berry perpendicular to plane through fruitstem axis so that fragment of berryc is formed containing pulp and exocarp symmetrized relative to greater transverse diameter of berry. Exocarp is crosscut within one of attaching fibres. Pulp is removed and sample of width 0.3 cm is cut of exocarp. Sample is doubled so that its surfaces previously directly contacting to pulp are inside and contacted to each other. Sample is tested with device providing tension and loading measurement at inaccuracy not more the 1% from measured value and constant speed of mutual clip removal within period when elongations are not decreased.

EFFECT: provided strength characterization of berry raw materials for optimised transportation, storage, processing and quality improvement of end product, and also to select berries by exocarp durability.