Fiber Tester--Measurement Principle of Crude Fiber Content in Pepper

Fiber Tester--Measurement Principle of Crude Fiber Content in Pepper

Crude fiber is different from what we usually call protein, fat, vitamins and other nutrients, it is a "non-nutritional" material. In spite of this, the role of crude fiber in people is still huge. Crude fiber is a general term for many substances. It includes substances such as cellulose, hemicellulose, pectin, and lignin, and is a major component of plant cell walls. The greatest function of crude fiber is to help digestion and enhance gastrointestinal function. Can prevent certain diseases such as coronary heart disease, diabetes, constipation and so on. Therefore, crude fiber is an indispensable "non-nutrient" substance.

Most vegetables and fruits contain a certain amount of crude fiber, such as corn, pepper, and bamboo shoots are all vegetables with very high crude fiber content. Fruits such as apples and red dates also contain more crude fiber. Since we know what material contains more crude fiber, how do we measure the amount of crude fiber contained in the material?

The determination of crude fiber content in pepper can be determined by referring to several national standard methods: GB 10469-89 Determination method for crude fibres of fruits and vegetables; GB 5009.10 Determination method for crude fibres in foods and GB 8858 Dried fruit and vegetable products The method of determining the substance and moisture content, the specific measurement method will be explained in detail below. At the same time, according to these national standard methods, many companies have also developed corresponding measuring instruments, such as fiber gauges, which have only one model, the CXC-06 fiber gauge. The CXC-06 fiber tester digests the sample according to the currently used acid-alkali digestion method, and performs gravimetric measurement to obtain various crude fiber content of food, feed, and other instruments. The crude fiber analyzer can determine the content of crude fiber in various foods, feeds, grains, foods and other agricultural and sideline products, which is convenient and practical.

Determination of crude fiber content in pepper:

Samples were co-boiled with hot dilute acid and dilute alkali, and were separated by filtration, washed with residues, and then dried and ashed. The acid can be removed by hydrolysis of sugar, starch, pectin and part of the hemicellulose. Alkali can remove proteins, partially hemicellulose, lignin, and saponify fatty acids. It is treated with ethanol and ether. The residue obtained after drying is the crude fiber content minus the ash weight.

This principle is actually the instrumental principle of the crude fiber analyzer. Both use the acid-alkali digestion method, and then use the gravimetric method to measure. This is because the results obtained by the laboratory method and the crude fiber analyzer are almost the same. When using the laboratory method, it is more complicated, because all manual operations are completed, and when the crude fiber analyzer instrument is used, many complicated steps in the middle can be eliminated and the instrument is automatically completed.