The determination of alpha-amylase activity in wheat flour using the fall value (FN) method has been widely studied. The project has been used as one of the indicators of grain quality and price determination. However, at present, there is still less use of the drop value method for the analysis of other grain quality than wheat. Seventeen varieties of grain were collected, and the relationship between the degree of aging and the change of the landing value was discussed, and the correlation between the landing value and other quality indicators was analyzed. Scan WeChat to learn more about cutting-edge information: Rubber O Rings,O Ring,Customized Nonstandard O-Rings,Rubber O-Rings Ningbo Yongsheng Rubber And Plastic Products Co., Ltd. , https://www.yscnrubber.com
the experiment shows:
1 The changes in the falling values ​​of various cereals all increased with the degree of aging, which was reported by foreign experts. “The storage of cereals in a high-temperature environment has a very significant change in quality, and it is preceded by changes in starch structureâ€. "The knot is consistent. 2 Different cereals, the rate of change of the F'N norm ΔFNΔt is not the same, and the average change rate of the sorghum in the test sample is the highest. M times for wheat. This may be due to the fact that sorghum starch is relatively sensitive to a-starch brewing, and sorghum a-amylase is caused by a decrease in the activity during aging.
3 The results of linear regression and correlation analysis on the experimental data show that during the rooting and aging process, as the grain quality declines, the FN value also refers to the ocean with other quality indicators. Showing regular changes. For the wheat and rice test results, the correlation coefficients of FN wave and viscosity values ​​were divided into +0,97 and +0,98, and the correlation coefficients with Iodine blue were +0,92 and 10,91, respectively. Reducing sugars' gego coeffi- cients were -1, -0, 84 and -0, 82, and the correlation coefficients with fatty acid values ​​were J1, respectively. .:. And +O, ilo
The variation of FN value of 4 different kinds of grain is the same as below. Among them, the sorghum rises _ and : : one meter of rice> slightly grain> wheat. 