Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method

Objective of this research is to find and explain how chemical prevents enzymatic browning to occur. There are three stages in the experiment for this research, first is obtain the oil palm sap and let it react with air and observe the changes of the color of oil palm sap. Second stage is obtain the...

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Main Author:	Mohd.Khairul Anuar, Samsudin
Format:	Undergraduates Project Papers
Language:	English
Published:	2010
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/3114/ http://umpir.ump.edu.my/id/eprint/3114/1/CD5631_MOHD._KHAIRUL_ANUAR_BIN_SAMSUDIN.pdf

id	ump-3114
recordtype	eprints
spelling	ump-31142015-03-03T07:59:29Z http://umpir.ump.edu.my/id/eprint/3114/ Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method Mohd.Khairul Anuar, Samsudin TP Chemical technology Objective of this research is to find and explain how chemical prevents enzymatic browning to occur. There are three stages in the experiment for this research, first is obtain the oil palm sap and let it react with air and observe the changes of the color of oil palm sap. Second stage is obtain the oil palm sap sample and test it with selected chemical which is Ascobic Acid (AA), Citric Acid (CA), L-cystien (LC), Sodium Chlorite (SC) and Catechol (CAT). The last stages of this research is analysis the oil palm sap, observation in color changes of the sap for 12 hour and 24 hour, measures absorbance from the UV range of the oil palm sap and using FTIR. Since browning reaction initiated by the enzymatic oxidation of Monophenol to 0-Diphenol than Quinines, non enzymatic browning polymerization of Quinines lead to the formation of the pigmen that cause change in color of the sap. Result of the first stages of the experiment show the enzymatic browning occurs to oil palm sap with change of color of sap within 24 hour. For second stage of the experiment show AA, CA and LC show the positive result which the lowest concentration of selected chemical give change of sap color and high concentration of selected chemical does not change the original color of the sap after 24 hour. CAT and SC show the negative result which the highest concentration of CAT changes the sap color darker and highest concentration of SC change the actual sap color to another color. Result from the analysis using FTIR and Uv- Vis analysis show there are possibility all of the sample have phenolic compound that can cause the enzymatic browning .When comparing result with control measure of FTIR with FTIR of the inhibitor, result of ascorbic acid is most preferable to be inhibition of browning agent for oil palm sap. 2010-11 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/3114/1/CD5631_MOHD._KHAIRUL_ANUAR_BIN_SAMSUDIN.pdf Mohd.Khairul Anuar, Samsudin (2010) Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method. Faculty of Chemical & Natural Resources Engineering , Universiti Malaysia Pahang .
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Mohd.Khairul Anuar, Samsudin Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method
description	Objective of this research is to find and explain how chemical prevents enzymatic browning to occur. There are three stages in the experiment for this research, first is obtain the oil palm sap and let it react with air and observe the changes of the color of oil palm sap. Second stage is obtain the oil palm sap sample and test it with selected chemical which is Ascobic Acid (AA), Citric Acid (CA), L-cystien (LC), Sodium Chlorite (SC) and Catechol (CAT). The last stages of this research is analysis the oil palm sap, observation in color changes of the sap for 12 hour and 24 hour, measures absorbance from the UV range of the oil palm sap and using FTIR. Since browning reaction initiated by the enzymatic oxidation of Monophenol to 0-Diphenol than Quinines, non enzymatic browning polymerization of Quinines lead to the formation of the pigmen that cause change in color of the sap. Result of the first stages of the experiment show the enzymatic browning occurs to oil palm sap with change of color of sap within 24 hour. For second stage of the experiment show AA, CA and LC show the positive result which the lowest concentration of selected chemical give change of sap color and high concentration of selected chemical does not change the original color of the sap after 24 hour. CAT and SC show the negative result which the highest concentration of CAT changes the sap color darker and highest concentration of SC change the actual sap color to another color. Result from the analysis using FTIR and Uv- Vis analysis show there are possibility all of the sample have phenolic compound that can cause the enzymatic browning .When comparing result with control measure of FTIR with FTIR of the inhibitor, result of ascorbic acid is most preferable to be inhibition of browning agent for oil palm sap.
format	Undergraduates Project Papers
author	Mohd.Khairul Anuar, Samsudin
author_facet	Mohd.Khairul Anuar, Samsudin
author_sort	Mohd.Khairul Anuar, Samsudin
title	Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method
title_short	Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method
title_full	Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method
title_fullStr	Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method
title_full_unstemmed	Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method
title_sort	elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method
publishDate	2010
url	http://umpir.ump.edu.my/id/eprint/3114/ http://umpir.ump.edu.my/id/eprint/3114/1/CD5631_MOHD._KHAIRUL_ANUAR_BIN_SAMSUDIN.pdf
first_indexed	2023-09-18T21:57:10Z
last_indexed	2023-09-18T21:57:10Z
_version_	1777414156038701056

Elucidation of the mechanism of enzymatic browning inhibition of the sap from oil palm trunk by chemical method

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