The determination of crude fiber content is very important for the evaluation of the nutritional value of food, and it is also of great significance for the study of many human diseases. For soybeans, its nutritional value has always been recognized by people. When the nutritional composition of soybean meal was tested, it was found that after dilute acid and dilute alkalis were boiled, they were filtered with linen and the results were low. Crude fiber tester is an important instrument for the determination of crude fiber content, and its measurement results are also relatively accurate.

Precisely weigh 2g of ground soybean powder that has been smashed and sifted through an 80-mesh sieve, transfer it to a 500ml beaker, add 200ml of boiled 1125% H2SO4, record the liquid surface, cover with a watch glass, and boil it in an electric oven for 1min. 30min, add boiling water to maintain the volume of the acid and shake the beaker frequently, then remove the beaker, immediately fold into 12 layers with 200 mesh 30cm2 nylon cloth, wash with boiling water until the wash solution is neutral. Transfer to a 500ml beaker and add 1125% NaOH according to the above acid method. Remove the beaker and stand still. Use a 200-mesh 12-layer nylon cloth suction tube to suck the supernatant and wash it repeatedly with boiling water until the lotion is in the middle. Sex.

Determination of Crude Fiber in Food by Crude Fiber Tester 6 Determination of Crude Fiber Content in Soybean Meal Conspicuously lower than this reference range, using a 200 mesh 12-layer nylon cloth filter improvement method to determine crude fiber content in soybean meal is in the reference range in. The average difference of soybean meal (A) is 0174%, and that of soybean meal (B) is 0157%. However, the standard deviation and coefficient of variation of the two methods showed little change, indicating that the same method used to determine the same sample showed little bias.

As a result of the measurement by the crude fiber measuring instrument, it was found that the crude fiber determination method in plant foods was low in the determination of crude fiber in foods. In order to effectively reduce the system deviation caused by filtration, a 200-mesh 12-layer nylon cloth filtration improvement method is recommended to improve the accuracy of the determination of crude fiber in plant foods.

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