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Extraction, Characterisation And Application Of Agar From Gracilaria Sp

The methods for extraction of agar from seaweeds differed either in the type of extraction solution, its concentration, the heating temperature or heating time used. Alkali pre-treatment of the seaweeds has also been performed in order to improve the agar gel strength. Sodium hydroxide has been u...

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Main Author: Wongsuban, Benchamaporn
Format: Thesis
Language:English
Published: 1999
Online Access:http://psasir.upm.edu.my/id/eprint/11848/1/FSMB_1999_1_A.pdf
http://psasir.upm.edu.my/id/eprint/11848/
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spelling my.upm.eprints.118482016-01-06T00:47:26Z http://psasir.upm.edu.my/id/eprint/11848/ Extraction, Characterisation And Application Of Agar From Gracilaria Sp Wongsuban, Benchamaporn The methods for extraction of agar from seaweeds differed either in the type of extraction solution, its concentration, the heating temperature or heating time used. Alkali pre-treatment of the seaweeds has also been performed in order to improve the agar gel strength. Sodium hydroxide has been used and the conditions were varied in terms of sodium hydroxide concentration, soaking temperature and time. In this study, the optimum conditions for extraction of agar from Gracilaria sp. were determined. The characteristics of the extracted agar were then compared with that of conumercial agar and the behaviour of the agar in roselle jelly was also determined. The three species of Gracilaria used in this study were Gracilaria changii, Gracilaria fisheri and Gracilaria tenuistipitata. Agar was extracted from the seaweeds using different extraction solutions. They were distilled water, sulphuric acid, acetic acid and sodium hexametaphosphate. The concentrations of sulphuric acid and acetic acid were in the range of 0.005-0.03% while the concentrations of sodium hexametaphosphate were in the range of 0.0005-0.003 M. 1999-06 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/11848/1/FSMB_1999_1_A.pdf Wongsuban, Benchamaporn (1999) Extraction, Characterisation And Application Of Agar From Gracilaria Sp. Masters thesis, Universiti Putra Malaysia.
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The methods for extraction of agar from seaweeds differed either in the type of extraction solution, its concentration, the heating temperature or heating time used. Alkali pre-treatment of the seaweeds has also been performed in order to improve the agar gel strength. Sodium hydroxide has been used and the conditions were varied in terms of sodium hydroxide concentration, soaking temperature and time. In this study, the optimum conditions for extraction of agar from Gracilaria sp. were determined. The characteristics of the extracted agar were then compared with that of conumercial agar and the behaviour of the agar in roselle jelly was also determined. The three species of Gracilaria used in this study were Gracilaria changii, Gracilaria fisheri and Gracilaria tenuistipitata. Agar was extracted from the seaweeds using different extraction solutions. They were distilled water, sulphuric acid, acetic acid and sodium hexametaphosphate. The concentrations of sulphuric acid and acetic acid were in the range of 0.005-0.03% while the concentrations of sodium hexametaphosphate were in the range of 0.0005-0.003 M.
format Thesis
author Wongsuban, Benchamaporn
spellingShingle Wongsuban, Benchamaporn
Extraction, Characterisation And Application Of Agar From Gracilaria Sp
author_facet Wongsuban, Benchamaporn
author_sort Wongsuban, Benchamaporn
title Extraction, Characterisation And Application Of Agar From Gracilaria Sp
title_short Extraction, Characterisation And Application Of Agar From Gracilaria Sp
title_full Extraction, Characterisation And Application Of Agar From Gracilaria Sp
title_fullStr Extraction, Characterisation And Application Of Agar From Gracilaria Sp
title_full_unstemmed Extraction, Characterisation And Application Of Agar From Gracilaria Sp
title_sort extraction, characterisation and application of agar from gracilaria sp
publishDate 1999
url http://psasir.upm.edu.my/id/eprint/11848/1/FSMB_1999_1_A.pdf
http://psasir.upm.edu.my/id/eprint/11848/
_version_ 1643824881680252928
score 13.211869

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