Cappitelli Francesca, Zanardini Elisabetta, Ranalli Giancarlo, Mello Emilio, Daffonchio Daniele, Sorlini Claudia
Dipartimento di Scienze e Tecnologie Alimentari e Microbiologiche, Università degli Studi di Milano, Via Celoria 2, 20133 Milan, Italy.
Appl Environ Microbiol. 2006 May;72(5):3733-7. doi: 10.1128/AEM.72.5.3733-3737.2006.
An improved methodology to remove black crusts from stone by using Desulfovibrio vulgaris subsp. vulgaris ATCC 29579, a sulfate-reducing bacterium, is presented. The strain removed 98% of the sulfates of the crust in a 45-h treatment. Precipitation of black iron sulfide was avoided using filtration of a medium devoid of iron. Among three cell carriers, Carbogel proved to be superior to both sepiolite and Hydrobiogel-97, as it allowed an easy application of the bacteria, kept the system in a state where microbial activity was maintained, and allowed easy removal of the cells after the treatment.
本文介绍了一种利用普通脱硫弧菌亚种(Desulfovibrio vulgaris subsp. vulgaris)ATCC 29579(一种硫酸盐还原菌)从石材上去除黑色硬壳的改进方法。该菌株在45小时的处理中去除了硬壳中98%的硫酸盐。通过过滤不含铁的培养基避免了黑色硫化铁的沉淀。在三种细胞载体中,Carbogel被证明优于海泡石和Hydrobiogel-97,因为它便于细菌的应用,使系统保持在微生物活性得以维持的状态,并且在处理后便于细胞的去除。