Determinação das propriedades físicas do colorau e dos grãos do urucum (Bixa orellana L.) para elaboração de projeto de pressões e fluxo em silos.

Abstract

The Annato {Bixa orellana L.) is an arbust of the bixacea family, that vegetates in forest ecosystems in the Tropical America. Their seeds are covered by a rouge layer that has a high concentration of bixine, which is a natural dye used in the food, cosmetic and pharmacological industries largely substituten of the sintetics.This research was developed aiming to determine the annato and pepper physical propreties. It was done tests utilizing the TSG 70-140 machine, that is known over the world as Jenike Shear Cell and recommended by the main international policies. The following properties were determined, particle size, density, interface friction angle, interface friction angle with consolidation time, angle of effective friction, angle of effective friction with consolidation time, friction angle of silo wall and flow function. The results show that the annato has different comparing to others granulate products: the increment of moisture content results in a decreasing in the studied angles.