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Bioconversion of lignocelluloses from paddy straw to Vanillic Acid using Aspergillus niger

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Main Author: Siti Roshayu, Hassan
Other Authors: Hafiza Shukor (Advisor)
Format: Learning Object
Language:English
Published: Universiti Malaysia Perlis 2011
Subjects:
Lignocellulosic
Paddy straws
Vanillic Acid
Aspergillus niger
Agricultural waste
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/13149
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spelling my.unimap-131492011-07-11T04:40:38Z Bioconversion of lignocelluloses from paddy straw to Vanillic Acid using Aspergillus niger Siti Roshayu, Hassan Hafiza Shukor (Advisor) Lignocellulosic Paddy straws Vanillic Acid Aspergillus niger Agricultural waste Access is limited to UniMAP community. Lignocellulosic materials are important natural renewable resources. This is because it is low in cost, renewable and it requires low processing energies. Agricultural residues, such as paddy straw are sources for lignocellulosic materials. Paddy straws are unique in their chemical compositions as well as their chemical, physical and mechanical properties. Its consist mainly of cellulose, hemicelluloses, lignin and a small amount of extractives. A number of different pretreatment methods of lignocellulosic materials to release lignin, cellulose and hemicelluloses are addressed such as chemical and steam pretreatment. Alkaline hydrolysis was choosed as the most suitable method to release ferulic acid for low low lignin content biomass. Optimum conditions for vanillic acid obtained from alkaline hydrolysis using Sodium Hydroxide, NaOH of paddy straw at different temperature (80ºC, 90ºC, and 100ºC) and NaOH concentration (3M, 4M and 5M) were 3M NaOH, 100ºC for 3 hours which yielded 0.02% of ferulic acid. The results obtained showed that lower concentration of NaOH, high temperature and longer reaction time have favored the ferulic acid formation. A vanilic acid concentration of 0.000567g was obtained after 3 days of fermentation at 30 ºC and pH at 5.5 using Aspergillus niger as the fermentative organism. Nevertheless, the yield of vanillic acid on this study was relative lower due to the fact that lower concentration of ferulic acid obtained from this study. 2011-07-11T04:40:38Z 2011-07-11T04:40:38Z 2010-05 Learning Object http://hdl.handle.net/123456789/13149 en Universiti Malaysia Perlis School of Bioprocess Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Lignocellulosic
Paddy straws
Vanillic Acid
Aspergillus niger
Agricultural waste
spellingShingle Lignocellulosic
Paddy straws
Vanillic Acid
Aspergillus niger
Agricultural waste
Siti Roshayu, Hassan
Bioconversion of lignocelluloses from paddy straw to Vanillic Acid using Aspergillus niger
description Access is limited to UniMAP community.
author2 Hafiza Shukor (Advisor)
author_facet Hafiza Shukor (Advisor)
Siti Roshayu, Hassan
format Learning Object
author Siti Roshayu, Hassan
author_sort Siti Roshayu, Hassan
title Bioconversion of lignocelluloses from paddy straw to Vanillic Acid using Aspergillus niger
title_short Bioconversion of lignocelluloses from paddy straw to Vanillic Acid using Aspergillus niger
title_full Bioconversion of lignocelluloses from paddy straw to Vanillic Acid using Aspergillus niger
title_fullStr Bioconversion of lignocelluloses from paddy straw to Vanillic Acid using Aspergillus niger
title_full_unstemmed Bioconversion of lignocelluloses from paddy straw to Vanillic Acid using Aspergillus niger
title_sort bioconversion of lignocelluloses from paddy straw to vanillic acid using aspergillus niger
publisher Universiti Malaysia Perlis
publishDate 2011
url http://dspace.unimap.edu.my/xmlui/handle/123456789/13149
_version_ 1643790760152137728
score 13.214268

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