Abstract
ABSTRACTThe physicochemical properties of starch from the corm of Sagittaria trifolia L. var. sinensis Makino (arrowhead) were investigated. The starch contained 31.65% of amylose and 0.0897 mg/g of phosphorus. It had a gelatinization temperature range of 56.1–61.7–64.9°C, a mixed type of Brabender viscosity pattern, a one‐stage swelling pattern, 99.6% water binding capacity, low solubility in dimethyl sulfoxide, and high a‐amylase susceptibility. The amylose was found to be a branched molecule of DP 2202 and was hydrolyzed 86.6% with β‐amylase. Its amylopectin had an average chain length of 24.5 and was hydrolyzed 65.5% with β‐amylase. The characteristics of this starch were different from those of typical corm, bulb and tuber starches.
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