Antifouling and anticorrosion potential of Pseudoalteromonas piscicida extract

Evaluation of the Anti-fouling Efficacy of Bacillus licheniformis Extracts Under Environmental and Natural Conditions

“…For this reason, the B. licheniformis NCTC 10341 T MCE should be explored as a booster biocide, in conjunction with a biocide with a broad-spectrum anti-fouling activity able to prevent the settlement of hard-encrusting macro-fouler organisms. The incorporation of 1% butanol extract of Pseudoalteromonas piscicida in paints also inhibited macrofouling and reduced microfouling 1.5-2.5-fold in the coating/seawater interface in a 3 months experiment, with important differences being found in the activity depending on the organic extract assayed (Kharchenko et al, 2020). Further purification/concentration of the B. licheniformis MCE extract may therefore result in higher effectivity.…”

“…the real effectivity of an anti-fouling compound can only be assessed in field trials. The use of microbial extracts containing multiple bioactive substances may constitute a cost-effective, eco-friendly alternative to the use of chemically synthesized biocides (Adnan et al, 2018;Kharchenko et al, 2020;Liu et al, 2020). The possibility of fine-tuning the production of anti-fouling compounds through cultivation techniques (Rajarajan et al, 2013), the stability of the production and the ease of cultivation represent clear advantages of microorganisms as a source of anti-fouling compounds in comparison to higher organisms.…”

“…Although the identification of the active molecules is compulsory for the industrial application of the anti-fouling compounds, the use of microbial extracts with anti-fouling activity may represent an interesting alternative to the use of purified compounds, presenting a lower production cost and the possibility of having different bioactive compounds in the same extract that could act synergically on different targets. Microbial extracts with anti-fouling activity have been identified (Armstrong et al, 2000;Peppiatt et al, 2000) and even tested successfully under field conditions (Kharchenko et al, 2020). Live cells or spores have been also successfully incorporated into antifouling coatings (Gatenholm et al, 1995;Eduok et al, 2015).…”

“…Live cells or spores have been also successfully incorporated into antifouling coatings (Gatenholm et al, 1995;Eduok et al, 2015). Nevertheless, in most cases, the microbial strains and extracts are selected based on antimicrobial or biocide activity (Armstrong et al, 2000;Peppiatt et al, 2000;Gao et al, 2014;Kharchenko et al, 2020), and few candidates are available that have been selected based on specific anti-biofilm or anti-fouling activity, presenting a low toxicity profile.…”

Use of silicate by-products in water treatment processes and development of eco-friendly self-polishing antifouling coatings

“…In order to figure out the respective influence of SiO 2 and calcium hydrosilicate on the coating physicochemical characteristics, different paints were composed by varying filler types and their ratio (Table 1). Bacterial organic extract from Pseudoalteromonas piscicida 2202, possessing antifouling and anticorrosive properties (Kharchenko et al 2020), served as the antifouling agent. The extract was obtained as described in (Kharchenko et al 2020).…”