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Extraction of antioxidant, phenolic content and mineral content from guava peel

Guava peel contains high amount of antioxidant activity and phenolic content and also the employment of peels would result in the waste to wealth application. The objective of this research is to investigate the extraction on antioxidant activity, phenolic content and mineral contents (Mg, Ca and Na...

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Main Author: Siti Zuulaika, Rejal
Format: Undergraduates Project Papers
Language:English
Published: 2010
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/3102/1/CD5511_SITI_ZULAIKA_REJAL.pdf
http://umpir.ump.edu.my/id/eprint/3102/
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spelling my.ump.umpir.31022021-07-01T07:46:34Z http://umpir.ump.edu.my/id/eprint/3102/ Extraction of antioxidant, phenolic content and mineral content from guava peel Siti Zuulaika, Rejal TP Chemical technology Guava peel contains high amount of antioxidant activity and phenolic content and also the employment of peels would result in the waste to wealth application. The objective of this research is to investigate the extraction on antioxidant activity, phenolic content and mineral contents (Mg, Ca and Na) in guava peel. Guava peels were freeze dried and grounded before mixing it with different type of organic solvent (methanol, ethanol, acetone and ethyl acetate) in various solvent ratio (20, 40, 60, 80, 100%). After that, the extraction time (20, 40, 60, 80, 100, 120, 150, 180 minutes) and temperature (25, 35, 45, 55, 65 ºC) were investigated to obtain the optimum condition for extraction. Then the extracts obtained were evaporated using rotary evaporator to remove solvent and were analyzed using Ultraviolet-Visible Spectrophotometer for analysis of antioxidant activity and phenolic content, Atomic Absorption Spectrophotometer for analysis of mineral content and High Performance Liquid Chromatography to verify ascorbic acid existence. It was found that methanol with 60% solvent/water ratio at temperature 55ºC for 120 minute gave the highest yields of antioxidant activity and phenolic content which were 1021.00 μmol/L and 596.67mg/L. After the analysis using AAS, it was prove that peel of guava contained 206.65, 17.31 and 2.04 ppm of Mg, Ca and Na respectively. From analysis of HPLC, it was determined that there were significant amount of ascorbic acid in the extracts. 2010-12 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/3102/1/CD5511_SITI_ZULAIKA_REJAL.pdf Siti Zuulaika, Rejal (2010) Extraction of antioxidant, phenolic content and mineral content from guava peel. Faculty of Chemical & Natural Resources Engineering , Universiti Malaysia Pahang .
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Siti Zuulaika, Rejal
Extraction of antioxidant, phenolic content and mineral content from guava peel
description Guava peel contains high amount of antioxidant activity and phenolic content and also the employment of peels would result in the waste to wealth application. The objective of this research is to investigate the extraction on antioxidant activity, phenolic content and mineral contents (Mg, Ca and Na) in guava peel. Guava peels were freeze dried and grounded before mixing it with different type of organic solvent (methanol, ethanol, acetone and ethyl acetate) in various solvent ratio (20, 40, 60, 80, 100%). After that, the extraction time (20, 40, 60, 80, 100, 120, 150, 180 minutes) and temperature (25, 35, 45, 55, 65 ºC) were investigated to obtain the optimum condition for extraction. Then the extracts obtained were evaporated using rotary evaporator to remove solvent and were analyzed using Ultraviolet-Visible Spectrophotometer for analysis of antioxidant activity and phenolic content, Atomic Absorption Spectrophotometer for analysis of mineral content and High Performance Liquid Chromatography to verify ascorbic acid existence. It was found that methanol with 60% solvent/water ratio at temperature 55ºC for 120 minute gave the highest yields of antioxidant activity and phenolic content which were 1021.00 μmol/L and 596.67mg/L. After the analysis using AAS, it was prove that peel of guava contained 206.65, 17.31 and 2.04 ppm of Mg, Ca and Na respectively. From analysis of HPLC, it was determined that there were significant amount of ascorbic acid in the extracts.
format Undergraduates Project Papers
author Siti Zuulaika, Rejal
author_facet Siti Zuulaika, Rejal
author_sort Siti Zuulaika, Rejal
title Extraction of antioxidant, phenolic content and mineral content from guava peel
title_short Extraction of antioxidant, phenolic content and mineral content from guava peel
title_full Extraction of antioxidant, phenolic content and mineral content from guava peel
title_fullStr Extraction of antioxidant, phenolic content and mineral content from guava peel
title_full_unstemmed Extraction of antioxidant, phenolic content and mineral content from guava peel
title_sort extraction of antioxidant, phenolic content and mineral content from guava peel
publishDate 2010
url http://umpir.ump.edu.my/id/eprint/3102/1/CD5511_SITI_ZULAIKA_REJAL.pdf
http://umpir.ump.edu.my/id/eprint/3102/
_version_ 1705056903569080320
score 13.222552

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