Product Introduction to Kekeling, a New Type of Silkworm Disinfectant

(1) Content Introduction Disinfection and disease prevention are key technical measures for stabilizing silkworm crops and increasing cocoon production. Researching and promoting silkworm disinfectants that are highly effective, low in toxicity, broad-spectrum in sterilization, stable in medicinal properties, non-corrosive, low in cost, and simple and safe to use is a topic that the sericulture industry in all countries attaches importance to. In recent years, various silkworm-producing areas in China have developed and promoted numerous silkworm disinfectants, and many have been restricted in their promotion and application due to reasons such as unstable medicinal properties, strong corrosiveness, and insufficiently broad-spectrum sterilization. The new silkworm disinfectant Kekeling was developed through collaborative research by South China Agricultural University, the Shunde Chemical and Biological Research Institute, and the Guangdong Silk Group Company, and belongs to the Spark Plan project of the Guangdong Provincial Science and Technology Commission. Kekeling is a colorless, tasteless, odorless, non-corrosive transparent aqueous solution that is not easily decomposed. This product contains 8% stabilized chlorine dioxide, and under acidic conditions (pH value < 4) it can release chlorine dioxide. Kekeling has highly effective, broad-spectrum sterilization, and has strong killing effects on silkworm viral disease pathogens (NPB, CPB, DNV), bacterial disease pathogens (Serratia marcescens, Bacillus thuringiensis-like bacteria, etc.), and fungal disease pathogens (Beauveria bassiana, Aspergillus, etc.). At room temperature, using a 400-500 uL/L Kekeling disinfectant solution for 20-30 min can kill the above-mentioned silkworm pathogens, and the silkworm disease control effect index all reaches above 90%. In particular, it has an even stronger killing effect on the microsporidia of silkworm pebrine disease; only a concentration of 50 uL/L and 10 min of contact can inactivate them; it is non-corrosive and safe for iron, wood, silk, cotton fabrics, and plastics; it is non-toxic to humans, livestock, and silkworms, and continuous feeding to silkworms has no adverse effects on the current generation or the next generation, and it can be used for mulberry leaf and mulberry field disinfection without affecting mulberry sprouting and growth or leaf quality; it also has a deodorizing effect, and after spraying it can remove odors from silkworm rearing rooms and egg production rooms and keep the air fresh; the cost is slightly lower than bleaching powder disinfection, and it is simple and safe to use. It is especially welcomed by the public for @#@250@#@ household room disinfection and environmental disinfection. According to pilot production survey results from 128 batches in 83 households across 5 counties, the disinfection effect of Kekeling is significantly better than that of bleaching powder, and the yield per single sheet of silkworm eggs increased by 4%-11%. Because it is non-toxic, odorless, and non-corrosive, no further cleaning is needed after disinfection, it does not absorb moisture or become damp again, it can extend the service life of silkworm tools, and it has a deodorizing effect, so it is very popular among silkworm farmers. This product passed the technical appraisal chaired by the Guangdong Provincial Science and Technology Commission. It is considered that the successful research of Kekeling is a new breakthrough in silkworm disinfectants in China and is a domestic first. It has been promoted and applied in silkworm-producing areas such as Guangdong, Guangxi, Hunan, Sichuan, and Shandong, especially playing an important role in preventing and controlling silkworm pebrine disease and ensuring safe production in silkworm egg farms in various places.

(2) Advanced Nature of the Product This product is a silkworm disinfectant with broad-spectrum sterilization, high effectiveness and low toxicity, odorlessness, no peculiar smell, non-corrosiveness, chemical stability, simple and safe use, and a deodorizing effect, making it a relatively ideal silkworm disinfectant. It can also be used for disinfection in food and beverage factories, pipelines, and medical and health settings. It has broad prospects for development and application.

(3) Scope of Application This product is suitable for disinfection in silkworm rearing for silk cocoon rearing and seed cocoon rearing in silkworm-producing areas, as well as in silkworm egg farms, original silkworm household room disinfection, mulberry leaf disinfection, and mulberry field disinfection. It can also be used for disinfection of livestock and poultry houses and for food and beverage, food, and medical and health disinfection, etc.

(4) Production Conditions The Shunde Chemical and Biological Research Institute has already built a chlorine oxide (C102) production plant with an annual output of 200 t. After 3 years of operation, product quality has been stable, proving that the process is reasonable and feasible.