Extract and Characterization of Starch from White Lupine Seed

The textile industry is one of the most important sectors in Ethiopia and has grown from year to year. The extraction and processing of starch from different resources are one of the most important agro industries in the world. Starch is a product commonly used in textile industries as a sizing agent and is mainly sourced from food crops. Those food crops are mostly edible by human beings. Therefore, alternative starch sources of materials are required. This research focused on extracted starch from white lupine seed which is not edible. Two extraction methods are used namely cold and hot steeping. From those cold steeping is much better than hot to get a quality starch which is comparable with the existing starch in the market like maize, white, etc. starches. After applying the extracted whit lupine starch in textile sizing, the tensile strength of warp yarn was not a significant difference. After sizing using extracted white lupine starch which is a hot and cold steeping method the average tensile strength was 320.9 cN and 338.3cN respectively and the average elongation of yarn was 4.27 % and 4.21% respectively achieved. The size pick-up % warp yarn in the case of hot and cold steeping is 10.64 and 14.85 respectively was achieved.

Keywords: Starch; Extraction; Textile; Sizing; White lupine seed