Nano-silver antibacterial property The silver particle has larger area to contact with the outside environment which enables it with higher antibacterial activity. Besides, the nano-silver particle also has stronger infiltration ability owing to its small size and the surface effect so as to achieve a more efficient antibacterial effect. The nano-silver particle will release silver ions unceasingly by means of ionizing balance and the silver irons will suppress the reproduction of the bacteria radically by the following three ways: 1. Silver ions attack the SH group in the internal metabolic enzymes of the bacterial. The metabolic enzymes will be inactive and the normal bacterial metabolism is destroyed; 2. Silver ions react with the peptidoglycan exposed on the bacterial cell wall so that the peptidoglycan can not fulfill the task of energy transfer and the normal physiological activity is destroyed; 3. The bacterial DNA structure is changed because of the combination of silver irons and the DNA base and the DNA transcription is restrained. The reproduction of the bacteria will be suppressed completely by the above three means so that the excellent antibacterial effect is achieved. The nano-silver particle has higher antibacterial activity for its larger surface and contact area and bacteria will loss activity after 6 seconds contact with the nano silver. Besides, because of the unique antibacterial mechanism of the silver, bacterial will not produce drug-resistant property for the nano-silver antimicrobial agent as for the other antimicrobial agent, so that the sustained dosage and antibacterial effects can be guaranteed. Since the nano-silver is a kind of single-inorganic antimicrobial agent and the silver has good chemical stability, the nano-silver antimicrobial agent has better stability that other antimicrobial agent which also means that the nano-silver has longer antibacterial effect. The silver ion will be released unceasingly by ionization and the silver iron will infiltrate into the bacteria internal to destroy the activity of the bacterial. Then, the silver iron can dissociate out to participate in a new round of attacks, which enables the nano-silver has excellent semi-permanent antibacterial property as the catalyst. With the help of the high activity and high specific surface area of the nano-silver iron, the excellent antimicrobial effect will be achieved with lower concentration (the minimum effective antimicrobial concentration is 10ppm). The nano-silver is the nano level particle of the metal form silver. As we are known, the metal silver has been applied to the antibacterial field for a history of thousands of years and countless examples have tell us that the silver antibacterial technology is nontoxic. Also, the scientific experiments made by modern scientific testing have also proved that the nano-silver is nontoxic and safe. (Some domestic relevant products have been certificated by the United States FDA certification ID CODE: 2030950 and have passing the oral toxicity test, skin irritation test, peripheral cell toxicity test, 0 grade toxicity GB/T16886.5.)
|