Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried <i>Alchornea Laxiflora</i> Leaves in Corrosion Prevention

Oluwafemi Lawrence Adebayo; Emmanuel Folorunso Olasehinde; Labunmi Lajide; Daniel Oloruntoba; Morenike Grace Ajayi

doi:doi:10.11648/j.ajmsp.20190402.13

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Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention

Oluwafemi Lawrence Adebayo, Emmanuel Folorunso Olasehinde, Labunmi Lajide, Daniel Oloruntoba, Morenike Grace Ajayi

Published in American Journal of Materials Synthesis and Processing (Volume 4, Issue 2)

Received: 25 July 2019 Accepted: 5 September 2019 Published: 22 November 2019

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Abstract

The aim of this study was to determine the thermal stability and shelf life of the extract together with the influence of extract concentration, temperature and pH variation of the acidic medium on the inhibition efficiency using 1.0 M Sodium hydroxide. The dried plant samples were ground, sieved using 0.25µm and then extracted with methanol using maceration method. The phytochemical constituents were analyzed using appropriate methods. The phytochemicals detected were: Alkaloid, saponin, flavnoid, tannin, terpenoid, steroid and cardiac glycoside. Weight loss experiment was performed to ascertain the stability and shelf life of the extract at different storage temperature and time respectively while polarization experiment was used to study the behaviour of the extract on mild steel corrosion at varying concentration of the extract, pH and temperature of the acidic media. It was found that the stability of the extract inhibition efficiency was affected by the mode of storage and the inhibition efficiency decreases with increase in storage temperature of the extract. The life span of the extract was found to be 60 days from its production stage, after this, there was reduction in the inhibition efficiency of the extract. Moreso, the corrosion rate of the mild steel in 1.0 M HCl, monitored by electrochemical measurement revealed that the corrosion rate decreases with increase in the pH, decrease in temperature and increase in concentration of the extract in the acidic solution.

Published in	American Journal of Materials Synthesis and Processing (Volume 4, Issue 2)
DOI	10.11648/j.ajmsp.20190402.13
Page(s)	68-74
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Phytochemicals, Storage Temperature, Shelf Life, Solution pH

References

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Oluwafemi Lawrence Adebayo, Emmanuel Folorunso Olasehinde, Labunmi Lajide, Daniel Oloruntoba, Morenike Grace Ajayi. (2019). Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention. American Journal of Materials Synthesis and Processing, 4(2), 68-74. https://doi.org/10.11648/j.ajmsp.20190402.13

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ACS Style

Oluwafemi Lawrence Adebayo; Emmanuel Folorunso Olasehinde; Labunmi Lajide; Daniel Oloruntoba; Morenike Grace Ajayi. Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention. Am. J. Mater. Synth. Process. 2019, 4(2), 68-74. doi: 10.11648/j.ajmsp.20190402.13

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AMA Style

Oluwafemi Lawrence Adebayo, Emmanuel Folorunso Olasehinde, Labunmi Lajide, Daniel Oloruntoba, Morenike Grace Ajayi. Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention. Am J Mater Synth Process. 2019;4(2):68-74. doi: 10.11648/j.ajmsp.20190402.13

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@article{10.11648/j.ajmsp.20190402.13,
  author = {Oluwafemi Lawrence Adebayo and Emmanuel Folorunso Olasehinde and Labunmi Lajide and Daniel Oloruntoba and Morenike Grace Ajayi},
  title = {Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention},
  journal = {American Journal of Materials Synthesis and Processing},
  volume = {4},
  number = {2},
  pages = {68-74},
  doi = {10.11648/j.ajmsp.20190402.13},
  url = {https://doi.org/10.11648/j.ajmsp.20190402.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmsp.20190402.13},
  abstract = {The aim of this study was to determine the thermal stability and shelf life of the extract together with the influence of extract concentration, temperature and pH variation of the acidic medium on the inhibition efficiency using 1.0 M Sodium hydroxide. The dried plant samples were ground, sieved using 0.25µm and then extracted with methanol using maceration method. The phytochemical constituents were analyzed using appropriate methods. The phytochemicals detected were: Alkaloid, saponin, flavnoid, tannin, terpenoid, steroid and cardiac glycoside. Weight loss experiment was performed to ascertain the stability and shelf life of the extract at different storage temperature and time respectively while polarization experiment was used to study the behaviour of the extract on mild steel corrosion at varying concentration of the extract, pH and temperature of the acidic media. It was found that the stability of the extract inhibition efficiency was affected by the mode of storage and the inhibition efficiency decreases with increase in storage temperature of the extract. The life span of the extract was found to be 60 days from its production stage, after this, there was reduction in the inhibition efficiency of the extract. Moreso, the corrosion rate of the mild steel in 1.0 M HCl, monitored by electrochemical measurement revealed that the corrosion rate decreases with increase in the pH, decrease in temperature and increase in concentration of the extract in the acidic solution.},
 year = {2019}
}

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TY  - JOUR
T1  - Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention
AU  - Oluwafemi Lawrence Adebayo
AU  - Emmanuel Folorunso Olasehinde
AU  - Labunmi Lajide
AU  - Daniel Oloruntoba
AU  - Morenike Grace Ajayi
Y1  - 2019/11/22
PY  - 2019
N1  - https://doi.org/10.11648/j.ajmsp.20190402.13
DO  - 10.11648/j.ajmsp.20190402.13
T2  - American Journal of Materials Synthesis and Processing
JF  - American Journal of Materials Synthesis and Processing
JO  - American Journal of Materials Synthesis and Processing
SP  - 68
EP  - 74
PB  - Science Publishing Group
SN  - 2575-1530
UR  - https://doi.org/10.11648/j.ajmsp.20190402.13
AB  - The aim of this study was to determine the thermal stability and shelf life of the extract together with the influence of extract concentration, temperature and pH variation of the acidic medium on the inhibition efficiency using 1.0 M Sodium hydroxide. The dried plant samples were ground, sieved using 0.25µm and then extracted with methanol using maceration method. The phytochemical constituents were analyzed using appropriate methods. The phytochemicals detected were: Alkaloid, saponin, flavnoid, tannin, terpenoid, steroid and cardiac glycoside. Weight loss experiment was performed to ascertain the stability and shelf life of the extract at different storage temperature and time respectively while polarization experiment was used to study the behaviour of the extract on mild steel corrosion at varying concentration of the extract, pH and temperature of the acidic media. It was found that the stability of the extract inhibition efficiency was affected by the mode of storage and the inhibition efficiency decreases with increase in storage temperature of the extract. The life span of the extract was found to be 60 days from its production stage, after this, there was reduction in the inhibition efficiency of the extract. Moreso, the corrosion rate of the mild steel in 1.0 M HCl, monitored by electrochemical measurement revealed that the corrosion rate decreases with increase in the pH, decrease in temperature and increase in concentration of the extract in the acidic solution.
VL  - 4
IS  - 2
ER  -

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Author Information

Oluwafemi Lawrence Adebayo

Department of Chemical and Process Engineering, University of Strathclyde, Glasgow, United Kingdom
Emmanuel Folorunso Olasehinde

Department of Physical and Chemical Sciences, Elizade University, Ilara Mokin, Nigeria
Labunmi Lajide

Department of Chemistry, Federal University of Technology, Akure, Nigeria
Daniel Oloruntoba

Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, Nigeria
Morenike Grace Ajayi

Department of Chemistry, College of Education, Ikere, Nigeria

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APA Style

Oluwafemi Lawrence Adebayo, Emmanuel Folorunso Olasehinde, Labunmi Lajide, Daniel Oloruntoba, Morenike Grace Ajayi. (2019). Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention. American Journal of Materials Synthesis and Processing, 4(2), 68-74. https://doi.org/10.11648/j.ajmsp.20190402.13

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ACS Style

Oluwafemi Lawrence Adebayo; Emmanuel Folorunso Olasehinde; Labunmi Lajide; Daniel Oloruntoba; Morenike Grace Ajayi. Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention. Am. J. Mater. Synth. Process. 2019, 4(2), 68-74. doi: 10.11648/j.ajmsp.20190402.13

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AMA Style

Oluwafemi Lawrence Adebayo, Emmanuel Folorunso Olasehinde, Labunmi Lajide, Daniel Oloruntoba, Morenike Grace Ajayi. Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention. Am J Mater Synth Process. 2019;4(2):68-74. doi: 10.11648/j.ajmsp.20190402.13

Copy | Download

@article{10.11648/j.ajmsp.20190402.13,
  author = {Oluwafemi Lawrence Adebayo and Emmanuel Folorunso Olasehinde and Labunmi Lajide and Daniel Oloruntoba and Morenike Grace Ajayi},
  title = {Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention},
  journal = {American Journal of Materials Synthesis and Processing},
  volume = {4},
  number = {2},
  pages = {68-74},
  doi = {10.11648/j.ajmsp.20190402.13},
  url = {https://doi.org/10.11648/j.ajmsp.20190402.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmsp.20190402.13},
  abstract = {The aim of this study was to determine the thermal stability and shelf life of the extract together with the influence of extract concentration, temperature and pH variation of the acidic medium on the inhibition efficiency using 1.0 M Sodium hydroxide. The dried plant samples were ground, sieved using 0.25µm and then extracted with methanol using maceration method. The phytochemical constituents were analyzed using appropriate methods. The phytochemicals detected were: Alkaloid, saponin, flavnoid, tannin, terpenoid, steroid and cardiac glycoside. Weight loss experiment was performed to ascertain the stability and shelf life of the extract at different storage temperature and time respectively while polarization experiment was used to study the behaviour of the extract on mild steel corrosion at varying concentration of the extract, pH and temperature of the acidic media. It was found that the stability of the extract inhibition efficiency was affected by the mode of storage and the inhibition efficiency decreases with increase in storage temperature of the extract. The life span of the extract was found to be 60 days from its production stage, after this, there was reduction in the inhibition efficiency of the extract. Moreso, the corrosion rate of the mild steel in 1.0 M HCl, monitored by electrochemical measurement revealed that the corrosion rate decreases with increase in the pH, decrease in temperature and increase in concentration of the extract in the acidic solution.},
 year = {2019}
}

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TY  - JOUR
T1  - Studies on Thermal Stability, Shelf Life and Electrochemical Measurement of Methanol Extract of Air Dried Alchornea Laxiflora Leaves in Corrosion Prevention
AU  - Oluwafemi Lawrence Adebayo
AU  - Emmanuel Folorunso Olasehinde
AU  - Labunmi Lajide
AU  - Daniel Oloruntoba
AU  - Morenike Grace Ajayi
Y1  - 2019/11/22
PY  - 2019
N1  - https://doi.org/10.11648/j.ajmsp.20190402.13
DO  - 10.11648/j.ajmsp.20190402.13
T2  - American Journal of Materials Synthesis and Processing
JF  - American Journal of Materials Synthesis and Processing
JO  - American Journal of Materials Synthesis and Processing
SP  - 68
EP  - 74
PB  - Science Publishing Group
SN  - 2575-1530
UR  - https://doi.org/10.11648/j.ajmsp.20190402.13
AB  - The aim of this study was to determine the thermal stability and shelf life of the extract together with the influence of extract concentration, temperature and pH variation of the acidic medium on the inhibition efficiency using 1.0 M Sodium hydroxide. The dried plant samples were ground, sieved using 0.25µm and then extracted with methanol using maceration method. The phytochemical constituents were analyzed using appropriate methods. The phytochemicals detected were: Alkaloid, saponin, flavnoid, tannin, terpenoid, steroid and cardiac glycoside. Weight loss experiment was performed to ascertain the stability and shelf life of the extract at different storage temperature and time respectively while polarization experiment was used to study the behaviour of the extract on mild steel corrosion at varying concentration of the extract, pH and temperature of the acidic media. It was found that the stability of the extract inhibition efficiency was affected by the mode of storage and the inhibition efficiency decreases with increase in storage temperature of the extract. The life span of the extract was found to be 60 days from its production stage, after this, there was reduction in the inhibition efficiency of the extract. Moreso, the corrosion rate of the mild steel in 1.0 M HCl, monitored by electrochemical measurement revealed that the corrosion rate decreases with increase in the pH, decrease in temperature and increase in concentration of the extract in the acidic solution.
VL  - 4
IS  - 2
ER  -

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