SMALL GRANULE STARCHES AND HYDROPHILIC PO LYMERS AS COMPONENTS FOR NOVEL BIODEGRADABLE 2-PHASE COMPOUNDS FOR SPECIAL APPLICATIONS - PART 1 - SEPARATION AND REFINEMENT TECHNIQUES FOR SMALL GRANULE STARCHES FROMAMARANTH AND QUINOA

A small technical scale process for the separation and special refinem ent of small granule starches from amaranth and quinoa seed was develo ped using basic starch technology and machinery equipment as well asa neutral extraction process with xylanases and other enzymes. By using aqueous alkaline media for starch extraction, instead of water, the na tive starch structure was irreversibly changed, as indicated by Braben der and RVA peak viscosities as well as damaged starch measurements. T he functional properties of these smallest native starch granules (0.5 -3.0 mu m) were investigated for novel applications in starch-compound products. Extrusion compounding processes for the formation of two-ph ase compounds from small granule starches and synthetic thermoplastics with polar structure units request native starch structures with high thermal stability.