Paschino, Francesco and Gambella, Filippo (2008) First contribute to the mechanization string of saffron flowers (Croccus sativus L). In: Innovation technology to empower safety, health and welfare in agriculture and agro-food systems: International conference, September 15-17, 2008, Ragusa, Italy. Ragusa, ElleDue.  p. ISBN 978-88-903151-1-4. Conference or Workshop Item.
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In this work the some preliminary results of tests to mechanical string of the saffron stigmas in air current are shown. In particular have been compared, three models of air separation which some structural difference: duct diameter, air speed and the separation surface. For the flower disarticulation by cut and three system of cut are compared. The force applied for the cut, was relatively low (0,21 N) if the extraction stigmas by the hand was simulated; but increased if the operating conditions was expecting to simulated the cut reaching values included between the 7,39 N and the 21,37. Between the three cyclone system there was the following differences: a) Cyclone type 1: at the 3,5 m/sec maximum speed, the 49,3% of stigmas underwent the loss of one or two filaments; b) Cyclone type 2: reduction of the 25% of the duct diameter, does not complete the separation; c) Type 3: reduction of the 14% of the duct diameter and speed of the air included between 0,69 m/sec and 1,5 m/sec, the separation is completed (96% of separate stigmas) does not highlight stigmas damage. In definitive, the system arranged with the cyclone of type 3 is able to obtain a high percent of separation of stigmas which constitutes the beginning for the realization of a prototype for the experimentation in full field.
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