Variation in the Consumer Prices of Sago Palm Starch and Similar Powdery Starch Obtained from Other Crops in Jakarta, Indonesia

抄録

The consumer price of sago starch and similar powdery starch obtained was investigated at the retail stores of 8 companies chosen from different classes to cover various level of consumers’ income and the official online stores. The analyzing price of sago starch was compared with the main similar starches such as flour, tapioca starch, rice starch, and the unit price of sago starch remained higher position compared with tapioca, potato and rice starch or flour. The offline price was much higher than online price in sago starch. There were four categories of sago type starch produced by sago palm (Metroxylon sagu: M.s) and sugar palm (Arenga pinnata: A.p) online. The mean value of unit price was highest in ‘Sagu’ (M.s), followed by “Sagu Aren Murni’ (A.p), ‘Sagu Aren’ (A.p) and ‘Sagu Rumia’ (M.s). As the results of the principal component analysis in M.s employing the package weight, package price, price promotion sale, unit price and order number, two interaction PCs were extracted. Larger package with expensive price per package will be negative factor and the promotion sale of more expensive quality ones will be positive factor for larger order number. The cheaper starch that is sugar palm starch was considered to attract consumers’ attention rather than sago palm in average. Contrarily, when the starch variations in each species are compared (between Sagu and Sagu Rumbia (M.s) or between Sagu Aren Murni and Sagu Aren (A.p), more expensive starch considered as quality ones will attract consumers’ preference in average.