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
E. Wilhelm et al., 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, Starke, 50(1), 1998, pp. 7-13
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.