Sodium nitrite is mainly used to marinate meat foods. Adding sodium nitrite not only has a color development effect, but also has a certain preservative effect. The specific analysis is as follows:
1. Color development: Sodium nitrite forms nitrous acid under slightly acidic conditions. Nitrous acid is very unstable and is reacted by reducing substances to form nitric oxide (NO) during the curing process. The formation rate of nitric oxide (NO) is related to the acidity of the medium, temperature and the presence of reducing substances. The reaction between NO and the reduced state of myoglobin combines to form nitrosomyoglobin. When nitrosomyoglobin is heated, it releases its thiol group to form a stable, bright red nitrosohemoglobin, which gives the meat a special carmine color;
2. Antiseptic effect: There are two theories for the antibacterial mechanism of sodium nitrite. One is that NO combines with protein to form a complex, thereby preventing the degradation of pyruvate and releasing ATP, destroying the growth environment of bacteria, while sodium nitrite After nitrite is generated in the meat, it is decomposed to produce NO and oxygen, which can inhibit the reproduction of anaerobic Clostridium botulinum in the deep meat, thereby preventing food poisoning caused by Clostridium botulinum producing botulinum toxin, and also plays a role in Preservative effect; secondly, only free sodium nitrite in cured meat has antibacterial effect.
Qingdao Fangjinlong Technology Development Co., Ltd. was founded in 2010 and is located in Qingdao City, Shandong Province,
on the coast of the beautiful Bohai Bay. Focus on chemical production and sales for more than 20 years; We have all kinds of dangerous goods licenses; Rich experience in safe transportation; Provide high-quality customer service; and Deliver high-quality products and services to all parts of the world anytime, anywhere.
The company invested in and participated in the operation of two production enterprises in 2006, mainly producing chemical products related to water environmental engineering, including Sodium Hypochlorite, Ferric Chloride, sodium acetate, Polyferric Sulfate,
Polyaluminum Chloride, etc. In 2008, in the laboratory independently operated by the company, famous researchers from the
School of Environmental Science and Engineering, Ocean University of China jointly conducted research and development on sewage treatment chemicals and sludge reduction technology and made breakthrough progress. Obtained three national patents in one fell swoop. In the same year, it was awarded the title of high-quality supplier of large water group companies such as Qingdao Water Group, and Everbright Water Group.
In May 2013, the company invested in the establishment of Qingdao Fangjinlong Supply Chain Co., Ltd., an enterprise in China
(Shandong) Qingdao Free Trade Pilot Zone, which greatly promoted the development of international business. The expansion of
main products involves mining chemical products, petrochemical products, sewage treatment chemical products, food additives, etc.
In order to facilitate the transportation of goods, the company cooperates with well-known freight companies in Huangdao District, Qingdao, and can independently complete the storage and transshipment business of the warehouse, which greatly improves the convenience and safety of goods transportation. Up to now, the company has reached long-term and stable cooperative relations
with 36 companies from South America, North America, Europe, the Middle East, Russia, and other countries and regions. In 2022, the export volume exceeded 80 million US dollars, accounting for 30% of the company's total revenue.
For many years, relying on our rich market experience, precise corporate strategy, and excellent scientific and technological talents, the company has been steadily and continuously moving forward on the track of specialization and diversification.
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