Method for quantitatively detecting content of protein in protein viscose

Abstract

The invention relates to a method for quantitatively detecting the content of protein in protein viscose. The method comprises the following steps: (1) arranging a test sample in a measuring bottle, and transferring the dried test sample to a constant weight into a conical flask with a stopper; (2) diluting a well-calibrated sodium hypochlorite stock solution to given concentration, arranging the diluted sodium hypochlorite stock solution into the conical flask with the stopper, covering a bottle cover, oscillating the moistened test sample, and arranging the test sample into a constant-temperature oscillation water-bath pot and oscillating at a given temperature; transferring residues into a glass sand core crucible with known drying mass, and washing the residues by utilizing the sodium hypochlorite sodium solution, tertiary water and dilute acetic acid respectively; (3) calculating the content of the protein according to the reduced mass of the protein viscose test sample before and after being processed by sodium hypochlorite. By adopting the method, the weaknesses that the test period is long, the danger in operation is high, toxic and harmful gas is likely to generate, and the like in the classical kjeldah method for measuring the content of the protein can be overcome. The method has the advantages of good test reproducibility, simplicity in operation, accuracy conforming to the analysis requirement, slight environmental pollution and the like.

Description

technical field [0001] The invention relates to a method for detecting textile components, in particular to a method for quantitatively detecting protein content in protein viscose fibers. Background technique [0002] Protein viscose fiber is a new type of fiber, which is prepared by blending and spinning protein spinning solution and cellulose sulfonate solution. The fiber retains the good hygroscopicity, dyeability and air permeability of viscose fiber, and because the molecular structure of the protein contains more amide bond polar groups, it has good hydrophilicity, so it has good comfort and compatibility with the skin. blind date. Protein content is an important indicator for evaluating the performance of protein viscose fiber. The classic protein content analysis method uses the Kjeldahl method, but this method has disadvantages such as long test period, high operation risk, and easy generation of toxic and harmful gases. Contents of the invention [0003] The p...

AI Technical Summary

Problems solved by technology

Protein content is an important indicator for evaluating the performance of protein viscose fiber. The classic protein content analysis method uses the Kjeldahl method, but this method has disadvantages such as long test period, high operation risk, and easy generation of toxic and harmful gases.

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