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Investigation of aqueous-methanol extract from red marine macroalgae Gracilaria verrucosa as inhibitor for biocorrosion
Simatupang D.F.a,b, Madayanti F.a, Bundjali B.a, Akhmaloka A.a,c
a Department of Chemistry, Institut Teknologi Bandung, West-Java, 40132, Indonesia
b Department of Chemical Engineering, Politeknik Teknologi Kimia Industri, North-Sumatera, 20228, Indonesia
c Department of Chemistry, Faculty of Science and Computer, Universitas Pertamina, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© Global Science Publications.Tropical marine environment is highly corrosive to metals of construction material for marine transportation and pipelines to distribute oil and gas. Indonesia’s tropical marine macroalgae have high potential and quality to be developed as a biocorrosion inhibitor for metals in tropical marine environment. This study was conducted to determine the bioactivity from Indonesia’s tropical marine macroalgae extract Gracilaria verrucosa to inhibit biocorrosion on carbon steel. Aqueous-methanol crude extract was separated by using column chromatography and produced 6 fractions through UV analysis which respectively treated with quantitative test of ability to inhibit biocorrosion with weight loss method of carbon steel coupon in liquid media of bacteria Thiobacillus ferrooxidans. There were 2 active fractions which have the lowest corrossion rate then treated with analysis for determination of corrosion rate in concentration and time variation. Analysis result of SEM-EDS to carbon steel revealed the biocorrosion mechanism and identification of UV spectrum revealed that both active fractions were mixture of phenolic and flavonoid compounds.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Biocorrosion,Carbon steel,Gracilaria verrucosa[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]We would like to thank to P3MI program of ITB, Ministry of Research, Technology and Higher Education for financial support in this research[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]