古希臘人用銀來加速療效,同時防止感染,可是這種療法在抗生素出現後就被打入冷宮。
製藥廠把這種古方拿來加以改良,把奈米大小的銀微粒塗在創傷紗布上,銀微粒的反應性較佳,會穿透皮膚持續發揮功效。
「銀」本身有廣泛的殺菌作用,像是古代宮廷就是用「銀針」來測試菜餚裡的毒素,古羅馬時代也使用銀器存放酒或牛奶等液體,以避免腐壞,中外戰爭史上也有拿銀箔防止傷兵細菌感染的例子,都證明了「銀」的抗菌特性。
銀具有預防潰爛和加速傷口癒合的作用,通過奈米技術處理後的銀表面急劇增大,表面結構發生變化,殺菌能力可提高200倍左右。奈米銀的滅菌原理是當帶正電荷的奈米銀顆粒接觸到帶負電荷的微生物細胞後,會相互吸附,經有效地擊穿細胞壁與細胞膜,使微生物細胞蛋白質變性,無法呼吸、代謝和繁殖,直至死亡,達到滅菌的效果。奈米銀抗菌劑在水中呈中性,能耐酸、耐鹽和弱鹼,對熱和光穩定性好;同時奈米銀抗菌成分並未做任何消耗,仍保持原有的抗菌能力,因此它的抗菌能力可長期有效。
透過高科技奈米技術的方式,使銀粒子活性變大,抗菌功能增強,對居家環境及個人衛生的品質提昇。銀的奈米級細微顆粒以及奈米銀所釋放的銀離子,都具有顯著的殺菌效果,奈米銀在多倍稀釋的情況下,對於大腸桿菌、金黃色葡萄球菌,沙門氏桿菌及綠膿桿菌等,均有99.99%的抑制功效,其主因為銀本身具有的生物作用。
據美國FDA研究文獻證實:銀具有公認的抗菌效果,一般而言,一種抗生素大致可殺死6種不同的抗生體,但是銀卻可殺死 650多種細菌,再加上銀是不具毒性的物質,所以銀的使用範圍相當廣且歷史悠久。透過高科技奈米技術的方式,使銀粒子活性變大,抗菌功能增強,因此奈米銀的殺菌功效最為有效。在無光源的夜間或稀暗處,奈米銀可獨自發揮自我還原能力,並在銀粒子靠近病毒、真菌類、細菌或嗜菌體時,將直接進入菌體,迅速與氧代謝的硫醇(-sh)結合,阻斷代謝,使其喪失活性,進而自然死亡;所以奈米銀的功效是屬於長效型抗菌劑。
Nano Silver has been tested effective against H5N1 and over more than 650 kinds of harmful bacteria like the BIRD FLU, Tuberculosis, AIDS, and Hepatitis. And tests have proved that Nano Silver will not stimulate the skin, is not harmful to humans, which are the actual non-toxic-class products.
The Nano Silver when in contact with bacteria and fungus will adversely affect cellular metabolism and inhibit cell growth. The Nano Silver suppresses respiration, basal metabolism of electron transfer system, and transport of substrate in the microbial cell membrane. The Nano Silver inhibits multiplication and growth of those bacteria and fungi which cause infection, odor, itchiness and sores.
Silver Film was developed by Sputtering Technology to form a continuous bond at molecular silver (Nano Silver) level.
The Silver Film nonwoven fabric, certified by the Ministry of Agriculture of the People’s Republic of China and tested by the BSL-3 State Key Laboratory, will effectively reduce the vital activity of the H5N1 avian influenza (bird flu) virus to a log value of 2.75, which is equivalent in reduction to 1/500.
Testing results by SGS showed that the bacteriostatic effect of the nonwoven fabric with Silver film for Peumococcus, Staphylococcus, Aurcus, Pseudomonas Aeruginosa, Escherichia coli, reached 99.9%. The fabric when used for ordinary flu victims can reduce the chance of pneumonia complication.