Lukacs A, Korting H C, Lemke O, Ruckdeschel G, Ehret W, Braun-Falco O
Department of Dermatology, Ludwig-Maximilians-Universität, Munich, Germany.
Acta Derm Venereol. 1995 Jul;75(4):280-2. doi: 10.2340/0001555575280282.
Brevibacterium epidermidis is a major component of the bacterial flora of certain skin surface biotopes, characterized by a comparatively high pH-value. The presence of Brevibacterium epidermidis seems to be linked to the production of malodour. Skin surface pH has been found to be a major factor of bacterial growth on the skin. In order to find out if this might also apply to Brevibacterium epidermidis, this microorganism was grown in vitro in continuous culture using a chemostat. Specific growth rate and density of colony forming units were well correlated. While the organism grew readily from pH 5.5 to 8.5, this was not the case with a pH of 5.0. Thus pH-shifts induced by cosmetic procedures can only prevent unpleasant body odour due to abundant growth of bacteria if the pH-value is decreased to 5.0 or less.
表皮短杆菌是某些皮肤表面生物群落细菌菌群的主要组成部分，其特征是pH值相对较高。表皮短杆菌的存在似乎与恶臭的产生有关。皮肤表面pH值已被发现是皮肤上细菌生长的主要因素。为了弄清楚这是否也适用于表皮短杆菌，使用恒化器在体外连续培养中培养了这种微生物。比生长速率和菌落形成单位密度具有良好的相关性。虽然该生物体在pH 5.5至8.5时很容易生长，但在pH 5.0时并非如此。因此，只有当pH值降至5.0或更低时，美容程序引起的pH值变化才能防止因细菌大量生长而产生的难闻体味。
