Physical properties of starch of Asian-adapted potato varieties

Starch was purified from 24 potato (Solanum tuberosum L) genotypes (varieti es and breeding selections) intended for production in Philippine condition s. Genotypes varied widely in their thermal, pasting and other physicochemi cal properties. The locally bred Philippine varieties and selected advanced clones had comparable starch qualities to the more widely grown commercial varieties from Europe and the USA. The genotypes B71-240.2, LBR 1-5, and t he three TPS hybrids (Serrana x LT-7, HPS 7/67 and HPS II/67) had some star ch properties that could make them suitable for processing and starch produ ction. Other genotypes have unique properties that could be useful for indu strial or other purposes. The addition of 10 g litre(-1) NaCl solution sign ificantly decreased and stabilized starch pasting values of all time potato genotypes, but genotypes varied in their relative response to 10 g litre(- 1) NaCl. (C) 1999 Society of Chemical Industry.