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Preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine PAHs in tea samples / Nur Zabirah Zabi

Tea are the most widely consumed beverages in the world and without knowing the concentration of PAHs presence in the tea can be risky since PAHs can easily enter all the organ once it is consumed. PAHs are known for its genotoxic, mutagenic and carcinogenic effects to humans. Traces amount of polyc...

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Main Author: Zabi, Nur Zabirah
Format: Thesis
Language:English
Published: 2023
Subjects:
Food processing and manufacture
Online Access:https://ir.uitm.edu.my/id/eprint/88625/1/88625.pdf
https://ir.uitm.edu.my/id/eprint/88625/
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spelling my.uitm.ir.886252024-01-16T06:18:34Z https://ir.uitm.edu.my/id/eprint/88625/ Preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine PAHs in tea samples / Nur Zabirah Zabi Zabi, Nur Zabirah Food processing and manufacture Tea are the most widely consumed beverages in the world and without knowing the concentration of PAHs presence in the tea can be risky since PAHs can easily enter all the organ once it is consumed. PAHs are known for its genotoxic, mutagenic and carcinogenic effects to humans. Traces amount of polycyclic aromatic hydrocarbons (PAHs) in tea beverages have made their analyses difficult, thus sample pre-concentration essential. This study investigated activated carbon (AC) prepared from palm oil empty fruit bunch (EFB) encapsulated in two different biopolymers which are Alginate-EFB-AC beads (Alg-EFB-AC beads) and Agarose-EFB-AC gels (Agr-EFB-AC gels) for the microextraction of PAHs from tea samples matrices prior to high performance liquid chromatography ultraviolet detection (HPLC/UV) and gas chromatography mass spectrometry detection (GC/MS), respectively. EFB-AC, Alg-EFB-AC beads, and Agr EFB-AC gels were successfully synthesized and characterized using Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM) and nitrogen adsorption-desorption analysis. Alg-EFB-AC beads and Agr-EFB-AC gels were utilized as sorbents in the dispersive micro-solid phase extraction (D-μ-SPE) of four PAHs which are naphthalene, fluorene, phenanthrene and pyrene. The optimized condition Alg-EFB-AC beads/D-μ-SPE method is ethyl acetate as desorption solvent, 20 minutes extraction time, 15 minutes desorption time and 50 mg of sorbent. Under the optimized condition the method provides good linearity (r2≥0.9909) with good limit of detection (LODs) for analytes in tea samples in the range of 0.011 to 0.047 mg/L. Whereas, the optimized condition for Agr-EFB-AC gels/D-μ-SPE is ethyl acetate as desorption solvent, 23 minutes extraction time, 11 minutes desorption time and 0.16 %w/v AC. This method also provides satisfactory linearity (r2≥0.9915) with good LODs (0.010-0.036 mg/L) under optimized condition. The D-μ-SPE proved a fruitful extraction technique with high relative recoveries in the range of 82.82 to 120.31% with RSD ranges from 1.08 to 7.49% and 85.15 to 120.33% with RSD ranges from 0.72 to 7.78% for Alg-EFB-AC beads and Agr-EFB-AC gels, respectively. The overall results proved that the proposed methods provide alternative approaches in sample preparation to solve analytical problems. 2023 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/88625/1/88625.pdf Preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine PAHs in tea samples / Nur Zabirah Zabi. (2023) Masters thesis, thesis, Universiti Teknologi MARA (UiTM). <http://terminalib.uitm.edu.my/88625.pdf>
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Food processing and manufacture
spellingShingle Food processing and manufacture
Zabi, Nur Zabirah
Preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine PAHs in tea samples / Nur Zabirah Zabi
description Tea are the most widely consumed beverages in the world and without knowing the concentration of PAHs presence in the tea can be risky since PAHs can easily enter all the organ once it is consumed. PAHs are known for its genotoxic, mutagenic and carcinogenic effects to humans. Traces amount of polycyclic aromatic hydrocarbons (PAHs) in tea beverages have made their analyses difficult, thus sample pre-concentration essential. This study investigated activated carbon (AC) prepared from palm oil empty fruit bunch (EFB) encapsulated in two different biopolymers which are Alginate-EFB-AC beads (Alg-EFB-AC beads) and Agarose-EFB-AC gels (Agr-EFB-AC gels) for the microextraction of PAHs from tea samples matrices prior to high performance liquid chromatography ultraviolet detection (HPLC/UV) and gas chromatography mass spectrometry detection (GC/MS), respectively. EFB-AC, Alg-EFB-AC beads, and Agr EFB-AC gels were successfully synthesized and characterized using Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM) and nitrogen adsorption-desorption analysis. Alg-EFB-AC beads and Agr-EFB-AC gels were utilized as sorbents in the dispersive micro-solid phase extraction (D-μ-SPE) of four PAHs which are naphthalene, fluorene, phenanthrene and pyrene. The optimized condition Alg-EFB-AC beads/D-μ-SPE method is ethyl acetate as desorption solvent, 20 minutes extraction time, 15 minutes desorption time and 50 mg of sorbent. Under the optimized condition the method provides good linearity (r2≥0.9909) with good limit of detection (LODs) for analytes in tea samples in the range of 0.011 to 0.047 mg/L. Whereas, the optimized condition for Agr-EFB-AC gels/D-μ-SPE is ethyl acetate as desorption solvent, 23 minutes extraction time, 11 minutes desorption time and 0.16 %w/v AC. This method also provides satisfactory linearity (r2≥0.9915) with good LODs (0.010-0.036 mg/L) under optimized condition. The D-μ-SPE proved a fruitful extraction technique with high relative recoveries in the range of 82.82 to 120.31% with RSD ranges from 1.08 to 7.49% and 85.15 to 120.33% with RSD ranges from 0.72 to 7.78% for Alg-EFB-AC beads and Agr-EFB-AC gels, respectively. The overall results proved that the proposed methods provide alternative approaches in sample preparation to solve analytical problems.
format Thesis
author Zabi, Nur Zabirah
author_facet Zabi, Nur Zabirah
author_sort Zabi, Nur Zabirah
title Preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine PAHs in tea samples / Nur Zabirah Zabi
title_short Preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine PAHs in tea samples / Nur Zabirah Zabi
title_full Preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine PAHs in tea samples / Nur Zabirah Zabi
title_fullStr Preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine PAHs in tea samples / Nur Zabirah Zabi
title_full_unstemmed Preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine PAHs in tea samples / Nur Zabirah Zabi
title_sort preparation of activated carbon from palm oil fiber encapsulated with biopolymer for dispersive micro-solid phase extraction combine with liquid and gas chromatography to determine pahs in tea samples / nur zabirah zabi
publishDate 2023
url https://ir.uitm.edu.my/id/eprint/88625/1/88625.pdf
https://ir.uitm.edu.my/id/eprint/88625/
_version_ 1789429240239751168
score 13.211869

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