Environmental risk assessment on capsaicin used as active substance for antifouling system on ships

Wang, Jianbing; Shi, Ting; Yang, Xuwu; Han, Wenya; Zhou, Yunrui

doi:10.1016/j.chemosphere.2013.10.061

Cited by 34 publications

(18 citation statements)

References 14 publications

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“…Capsaicin, one of the main components in chili, is a stable alkaloid that has broad‐spectrum antibacterial activity and is environmentally friendly. It has been widely used in medicine, as a biological pesticide, in the chemical industry, military industry, in antifouling technology, etc. Introducing the capsaicin monomer to an inhibitor molecule can be a way to develop a new kind of green corrosion inhibitor.…”

Section: Introductionmentioning

confidence: 99%

Investigation of polyacrylamide containing capsaicin monomer as a novel corrosion inhibitor for mild steel in hydrochloric acid

Sun

2018

Materials & Corrosion

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Polyacrylamide containing capsaicin‐derived monomer P(AM‐MAA‐AMPS‐HDDE‐SA) (PAMAHS) was investigated as a novel green polymer inhibitor for Q235 mild steel at 298 K in 1 M hydrochloric acid solution. Weight loss measurements, electrochemical techniques, and surface investigation methods were conducted to evaluate the inhibition performance and mechanism. The results indicated that the green inhibitor performed well in inhibiting the corrosion of mild steel and that the inhibition efficiency increased with the increase in the PAMAHS concentration. The polarization curves revealed that PAMAHS functions as a mixed‐type inhibitor. The outstanding anticorrosion effects could contribute to the PAMAHS molecule film adsorbed on the metal surface following a Langmuir adsorption isotherm, and the hydrophobic groups played an important role in protecting the metal surfaces from corrosion media.

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Section: Introductionmentioning

confidence: 99%

Investigation of polyacrylamide containing capsaicin monomer as a novel corrosion inhibitor for mild steel in hydrochloric acid

Sun

2018

Materials & Corrosion

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“…Of note from the natural products listed in Table 7 are capsaicin and brominated furanone. The former is considered an “emerging” anti-foulant and recent biodegradation studies conclude that capsaicin is readily biodegradable, has a low potential to bioaccumulate and is therefore a low environmental risk [40]. …”

Section: Resultsmentioning

confidence: 99%

Searching for “Environmentally-Benign” Antifouling Biocides

Cui

Teo

Leong

et al. 2014

IJMS

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As the result of the ecological impacts from the use of tributyltins (TBT) in shipping, environmental legislation for the registration of chemicals for use in the environment has grown to a monumental challenge requiring product dossiers to include information on the environmental fate and behavior of any chemicals. Specifically, persistence, bioaccumulation and toxicity, collectively known as PBT, are properties of concern in the assessment of chemicals. However, existing measurements of PBT properties are a cumbersome and expensive process, and thus not applied in the early stages of the product discovery and development. Inexpensive methods for preliminary PBT screening would minimize risks arising with the subsequent registration of products. In this article, we evaluated the PBT properties of compounds reported to possess anti-fouling properties using QSAR (quantitative structure-activity relationship) prediction programs such as BIOWIN™ (a biodegradation probability program), KOWWIN™ (log octanol-water partition coefficient calculation program) and ECOSAR™ (Ecological Structure Activity Relationship Programme). The analyses identified some small (Mr < 400) synthetic and natural products as potential candidates for environmentally benign biocides. We aim to demonstrate that while these methods of estimation have limitations, when applied with discretion, they are powerful tools useful in the early stages of research for compound selection for further development as anti-foulants.

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“…Based on different principles, there are six RBTs (301A-F) methods in the OECD guidelines. Without any limit for the solubility, volatility, and absorbability of the tested compounds, 301B, 301D, and 301F are widely employed in the environmental impact assessment of pharmaceuticals (Girardi et al 2013;Weltman et al 2011), surfactants (Brycki et al 2014;Kön-necker et al 2011), lubricants (Stolte et al 2012, hormone-like chemicals (Pessala et al 2009;Stasinakis et al 2008), detergents (Pedrazzani et al 2012), dyes (Mei et al 2015), antifouling agents of ships (Wang et al 2014), etc. However, 301A and 301E tests are not applicable for insoluble and volatile compounds, which are generally used for investigating and evaluating the primary biodegradation of some soluble pharmaceuticals and nonionic surfactants in the aquatic environment (Jurado et al 2009;Yamamoto et al 2009).…”

mentioning

confidence: 99%

The Effects of Molecular Properties on Ready Biodegradation of Aromatic Compounds in the OECD 301B CO2 Evolution Test

Chengfang

Sun

et al. 2015

Arch Environ Contam Toxicol

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Ready biodegradation is the primary biodegradability of a compound, which is used for discriminating whether a compound could be rapidly and readily biodegraded in the natural ecosystems in a short period and has been applied extensively in the environmental risk assessment of many chemicals. In this study, the effects of 24 molecular properties (including 2 physicochemical parameters, 10 geometrical parameters, 6 topological parameters, and 6 electronic parameters) on the ready biodegradation of 24 kinds of synthetic aromatic compounds were investigated using the OECD 301B CO2 Evolution test. The relationship between molecular properties and ready biodegradation of these aromatic compounds varied with molecular properties. A significant inverse correlation was found for the topological parameter TD, five geometrical parameters (Rad, CAA, CMA, CSEV, and N c), and the physicochemical parameter K ow, and a positive correlation for two topological parameters TC and TVC, whereas no significant correlation was observed for any of the electronic parameters. Based on the correlations between molecular properties and ready biodegradation of these aromatic compounds, the importance of molecular properties was demonstrated as follows: geometrical properties > topological properties > physicochemical properties > electronic properties. Our study first demonstrated the effects of molecular properties on ready biodegradation by a number of experiment data under the same experimental conditions, which should be taken into account to better guide the ready biodegradation tests and understand the mechanisms of the ready biodegradation of aromatic compounds.

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Environmental risk assessment on capsaicin used as active substance for antifouling system on ships

Cited by 34 publications

References 14 publications

Investigation of polyacrylamide containing capsaicin monomer as a novel corrosion inhibitor for mild steel in hydrochloric acid

Investigation of polyacrylamide containing capsaicin monomer as a novel corrosion inhibitor for mild steel in hydrochloric acid

Searching for “Environmentally-Benign” Antifouling Biocides

The Effects of Molecular Properties on Ready Biodegradation of Aromatic Compounds in the OECD 301B CO2 Evolution Test

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