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preventing infection by inhibiting the growth or action of microorganisms (同)disinfectant, germicidal

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/03/15 05:41:05」(JST)

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A bactericide or bacteriocide, sometimes abbreviated Bcidal, is a substance that kills bacteria. Bactericides are disinfectants, antiseptics, or antibiotics.^[1]

Bactericidal disinfectants[edit]

The most used disinfectants are those applying

active chlorine (i.e., hypochlorites, chloramines, dichloroisocyanurate and trichloroisocyanurate, wet chlorine, chlorine dioxide, etc.),
active oxygen (peroxides, such as peracetic acid, potassium persulfate, sodium perborate, sodium percarbonate, and urea perhydrate),
iodine (povidone-iodine, Lugol's solution, iodine tincture, iodinated nonionic surfactants),
concentrated alcohols (mainly ethanol, 1-propanol, called also n-propanol and 2-propanol, called isopropanol and mixtures thereof; further, 2-phenoxyethanol and 1- and 2-phenoxypropanols are used),
phenolic substances (such as phenol (also called "carbolic acid"), cresols (called "Lysole" in combination with liquid potassium soaps), halogenated (chlorinated, brominated) phenols, such as hexachlorophene, triclosan, trichlorophenol, tribromophenol, pentachlorophenol, Dibromol and salts thereof),
cationic surfactants, such as some quaternary ammonium cations (such as benzalkonium chloride, cetyl trimethylammonium bromide or chloride, didecyldimethylammonium chloride, cetylpyridinium chloride, benzethonium chloride) and others, non-quaternary compounds, such as chlorhexidine, glucoprotamine, octenidine dihydrochloride etc.),
strong oxidizers, such as ozone and permanganate solutions;
heavy metals and their salts, such as colloidal silver, silver nitrate, mercury chloride^{[disambiguation needed]}, phenylmercury salts, copper sulfate, copper oxide-chloride etc. Heavy metals and their salts are the most toxic and environment-hazardous bactericides and therefore their use is strongly discouraged or prohibited
properly concentrated strong acids (phosphoric, nitric, sulfuric, amidosulfuric, toluenesulfonic acids) and
alkalis (sodium, potassium, calcium hydroxides), such as of pH < 1 or > 13, particularly under elevated temperature (above 60°C), kills bacteria.

Bactericidal antiseptics[edit]

As antiseptics (i.e., germicide agents that can be used on human or animal body, skin, mucoses, wounds and the like), few of the above mentioned disinfectants can be used, under proper conditions (mainly concentration, pH, temperature and toxicity toward humans and animals). Among them, some important are

properly diluted chlorine preparations (f.e. Daquin's solution, 0.5% sodium or potassium hypochlorite solution, pH-adjusted to pH 7 – 8, or 0.5 – 1% solution of sodium benzenesulfochloramide (chloramine B)), some
iodine preparations, such as iodopovidone in various galenics (ointment, solutions, wound plasters), in the past also Lugol's solution,
peroxides such as urea perhydrate solutions and pH-buffered 0.1 – 0.25% peracetic acid solutions,
alcohols with or without antiseptic additives, used mainly for skin antisepsis,
weak organic acids such as sorbic acid, benzoic acid, lactic acid and salicylic acid
some phenolic compounds, such as hexachlorophene, triclosan and Dibromol, and
cation-active compounds, such as 0.05 – 0.5% benzalkonium, 0.5 – 4% chlorhexidine, 0.1 – 2% octenidine solutions.

Others are generally not applicable as safe antiseptics, either because of their corrosive or toxic nature.

Bactericidal antibiotics[edit]

Bactericidal antibiotics kill bacteria; bacteriostatic antibiotics slow their growth or reproduction.

Antibiotics that inhibit cell wall synthesis: the Beta-lactam antibiotics (penicillin derivatives (penams), cephalosporins (cephems), monobactams, and carbapenems) and vancomycin.

Also bactericidal are daptomycin, fluoroquinolones, metronidazole, nitrofurantoin, co-trimoxazole, telithromycin.

Aminoglycosidic antibiotics are usually considered bactericidal, although they may be bacteriostatic with some organisms

References[edit]

^ Klaus Grünewald: Theorie der medizinischen Fußbehandlung 1: Ein Fachbuch für Podologie. 3. Auflage. Verlag Neuer Merkur GmbH, 2006, ISBN 3-929360-60-8, S. 232 (Digitalitat)

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