Detection method for silkworm cocoon reelability

Abstract

The invention relates to a detection method for silkworm cocoon reelability. No method which is rapid in operating and used for detecting silkworm cocoon reelability exists at present. The detection method includes the following steps: (1) taking a silkworm cocoon sample and enabling a sensor contact needle to conduct constant speed sliding along the surface of the silkworm cocoon sample, the sliding speed is 0.15 millimeters per second, the sliding time is 1.67 seconds, and a roughness numerical value is obtained; (2) changing the surface position of the silkworm cocoon sample in step (1), repeating step (1) and obtaining another roughness numerical value; (3) repeating step (2) 8 times and obtaining 8 roughness numerical values; (4) conducing roughness detection on another 9 silkworm cocoon samples according to the step (1), the step (2) and the step (3); (5) counting the general average of the roughness of the silkworm cocoons according to the roughness numerical values which are gained in the step (1), the step (2), the step (3) and the step (4); (6) judging the good and bad of the reelability performance of the silkworm cocoons according to the general average of the roughness, the bigger the value is , the worse the reelability performance is, and the smaller the value is ,the better the reelability performance is. The detection method for the silkworm cocoon reelability is rapid in operating and low in cost.

Description

technical field [0001] The invention relates to a method for detecting silkworm cocoon unwinding, which is used for detecting the quality of silkworm cocoon unwinding performance, and belongs to a method for detecting the quality of silkworm cocoons. Background technique [0002] Unwinding refers to the difficulty of cocoon silk dissociation during silk reeling, and is usually evaluated by the unwinding rate, which is defined as the percentage of the number of silkworm cocoons used for silk reeling and the number of effective threading times. The higher the unwinding rate, the better the unwinding performance of the cocoon and the better quality of the cocoon, which is good for silk reeling; otherwise, the poor unwinding performance of the cocoon and the poor quality of the cocoon are not good for silk reeling. The cocoon unwinding rate is an important economic indicator in the cocoon trade and silk reeling industry. Therefore, it is of great economic significance to quickly...

AI Technical Summary

Problems solved by technology

[0003] At present, the detection method of the unwinding rate is the silk reeling method, which is measured and calculated by accurately recording the number of effective threads added (Chinese national standard GB / T 9196-2006 "Test method for silkworm cocoons"; Zhang Shancai, Peng Peng Yuchang, Research on the actual measurement method of unwinding rate in automatic reeling production [J], Silk, 2000, (2): 10-12, 19); however, this method has the disadvantages of high labor intensity, many factors affecting accuracy, and high technical requirements shortcoming

Zhu Liangjun researched and understood the dependence of Shuyouba and sericin on the molecular structure of β structure or random coil, and on this basis, through the circular dichroism spectrum, DSC curve and infrared absorption spectrum of cocoon sericin extracted from the cocoon to analyze the silkworm cocoon The unwinding performance has been tested (Zhu Liangjun, The detection research on the pros and cons of silkworm cocoon unwinding [J], Acta Textile Sinica, 2000, 21 (5): 42-44); but this method needs to extract sericin first, resulting in operation complexity, and the cost of the instruments used is high, it is difficult to popularize and use

In order to simplify the detection steps, Zhu Liangjun et al. disclosed an evaluation method for cocoon unwinding, that is, in a Chinese patent whose publication date is August 19, 2009, and whose publication number is CN101509911, an evaluation method for unwinding silkworm cocoons is disclosed. This method uses the total reflection method of the infrared spectrophotometer to evaluate the secondary structure information value of the sericin molecule on the surface of the cocoon cocoon layer, and obtains the cocoon unwinding rate value through the numerical conversion relationship, which is used to evaluate the unwinding performance of the cocoon; There are problems such as high instrument cost and difficulty in popularization

[0004] To sum up, there is currently no quick and low-cost method for testing silkworm cocoon unwinding performance.