The apparent soluble amylose content of F. thunbergii flour was determined using the method described by Sun et al.(2014). About 100 mg of the flour was accurately weighed andtaken in a 100-mL conical flask. The flour was wetted with1 mL of distilled alcohol, and then about 50 mL of distilledwater was added.The flask was then covered with a bulb stop-per, heated for 20 min in a boiling water bath with occasionalshaking, and then cooled to ambient temperature. Then dis-tilled water was added to the contents in a volumetric flask toobtain a final volume of 100 mL. The mixture was then filtered through a What man No. 4 filter paper, and the first portion was removed. About 20 mL of the extract was then trans ferred into a graduated 50 mL glass-stoppered cylinder, and 7 mL of petroleum ether (boiling range, 60–80◦C) was added. Thecy linder was shaken intermittently for 10 min and allowed to stand for 10–15 min. The ether layer was then suctioned of fusing a water suction device.