据史料记载,隋唐时代我国北方牧民就发现,马奶放在普通的瓷制器皿中,几天就会变质发臭,然而银碗里的马奶却能较长时间不变质。由于银的杀菌能力很强,故被誉为「永久性的杀菌剂」。现代研究证实,银器的杀菌原理是因为银在水中可形成带正电荷的银离子,能将细菌吸咐其上,细菌赖以呼吸代谢的酶就会即刻失去作用,使细菌无法生存。美国学者曾做过一个试验,将50加仑的污水(其中每毫升含7000多个大肠杆菌),经过3小时银电极处理之后,污水中所有的大肠杆菌全部死亡。据研究,伤寒杆菌在银片上只能活18小时,白喉杆菌在银片上 According to historical records, the Northern Herdsmen in Sui and Tang dynasties discovered that the milk of horses was put in common porcelain wares and would deteriorate and smelly in a few days. However, the horse milk in the silver bowls did not degenerate for a long time. Due to its strong bactericidal ability, silver is regarded as a “permanent bactericide”. Modern research confirms that the sterilizing principle of silverware is that silver can form positively charged silver ions in water and can attract bacteria to it. The enzymes that the bacteria rely on to breathe can immediately lose their function and make the bacteria unable to survive. American scholars have done a pilot, the 50 gallons of sewage (which contains more than 7000 per milliliter E. coli), after 3 hours of silver electrode treatment, all of the E. coli bacteria in the sewage death. According to the study, Salmonella typhi in silver only live 18 hours, diphtheria bacillus in silver