| To improve the efficiengcy of determinating the content of amylose in paddy rice, a modified method is development. The method is based on the computerized colorimetric principle, which can be used in the quality purchasing, processing and trading practice.The modified method of pretreatment and the mode of gathering information were discussed The main conclusions are as follows:(1) The method of pretreatment was simplified. The main processes included that the pure amylose and amylopection was replaced with the rice flour demarcated by GB 15683-1995 as the standard sample, the defatting was left out, and the samples must be disposed by bathing for 15 minutes at 85℃.The results also showed that the dosage of stardand iodine solution was 2 mL, the height of color-developing reagent was 3 ~ 6 mm, and the steady time must be less than 30 minutes.(2) The ideal experimental results could be obtained by microwaving for 10 ~ 20 seconds on 800 watts instead of the water bathing. And the microwave curing could shorten the time of digeating and improve the efficiency.(3) The colorimetric utensil and the scanner for collecting images were developed as the main devices accompanied with CCMA. And through loading color filter, the precision could be improved.(4) The synergistic method for determination of amylose content and gelatinization temperature by RQS1.0 was proposed. And the piecewise prediction method of amylase content through iodining rice flour directly was raised. So that we can quickly, easily and accurately forecast amylose content of samples. The new method is supposed to find wide application in the quality improvement of paddy material.
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