Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp.

The percentage yield of alginate in brown seaweeds, Sargassum and Padina spp., from Sabah, and the intrinsic viscosities of these alginates were determined. Young and mature Sargassum, respectively, gave 35% and 32%, while Pad ina only yielded 18.5% of alginate. The intrinsic viscosities [TIl, obt...

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Main Authors:	Omar, Siraj, Ahmad, Norasmah, Ahmad, Fashihuddin
Format:	Article
Language:	English English
Published:	1988
Online Access:	http://psasir.upm.edu.my/id/eprint/2557/ http://psasir.upm.edu.my/id/eprint/2557/1/Composition_of_Aiginates.pdf

id	upm-2557
recordtype	eprints
spelling	upm-25572013-05-27T07:01:53Z http://psasir.upm.edu.my/id/eprint/2557/ Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp. Omar, Siraj Ahmad, Norasmah Ahmad, Fashihuddin The percentage yield of alginate in brown seaweeds, Sargassum and Padina spp., from Sabah, and the intrinsic viscosities of these alginates were determined. Young and mature Sargassum, respectively, gave 35% and 32%, while Pad ina only yielded 18.5% of alginate. The intrinsic viscosities [TIl, obtained were 412 mL/g and 312 mL/g foralginates from mature SargassumandPadina, respectively. It was found that these intrinsic viscosities depend on the source and species of seaweeds. Treating the alginate sample with bleaching agent such as NaOC1 yielded samples with [TIl =210 mL/g. However, a higher intrinsic viscosity, [TIl = 650 mL/g, was obtained from Sargassum samples which were pre-treated in dilute formaldehyde solution. Results from intrinsic viscosity determination were used to estimate the viscosity average molecular weight, Mv' of the phycocolloid using the Mark-Houwink equation. Block compositions of alginates were determined using the technique ofpartial heterogenous hydrolysis. Results showed that young Sargassum was richer in the poly (I3-D-mannuronate) block, while matured Sargassllm 1.27, 0.64 and 0.85 for alginates from young Sargassum, mature Sargassum and Padina, respectively. This shows that mature Sargassum yields alginates with the lowest MIG ratio. was richer in the poly (a-L-guluronate) block. From these compositions, M/G ratios were estimated as 1.27, 0.64 and 0.85 for alginates from young Sargassum, mature Sargassum and Padina, respectively. This shows that mature Sargassum yields alginates with the lowest MIG ratio. 1988 Article NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/2557/1/Composition_of_Aiginates.pdf Omar, Siraj and Ahmad, Norasmah and Ahmad, Fashihuddin (1988) Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp. Pertanika, 11 (1). pp. 79-85. English
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Putra Malaysia
building	UPM Institutional Repository
collection	Online Access
language	English English
description	The percentage yield of alginate in brown seaweeds, Sargassum and Padina spp., from Sabah, and the intrinsic viscosities of these alginates were determined. Young and mature Sargassum, respectively, gave 35% and 32%, while Pad ina only yielded 18.5% of alginate. The intrinsic viscosities [TIl, obtained were 412 mL/g and 312 mL/g foralginates from mature SargassumandPadina, respectively. It was found that these intrinsic viscosities depend on the source and species of seaweeds. Treating the alginate sample with bleaching agent such as NaOC1 yielded samples with [TIl =210 mL/g. However, a higher intrinsic viscosity, [TIl = 650 mL/g, was obtained from Sargassum samples which were pre-treated in dilute formaldehyde solution. Results from intrinsic viscosity determination were used to estimate the viscosity average molecular weight, Mv' of the phycocolloid using the Mark-Houwink equation. Block compositions of alginates were determined using the technique ofpartial heterogenous hydrolysis. Results showed that young Sargassum was richer in the poly (I3-D-mannuronate) block, while matured Sargassllm 1.27, 0.64 and 0.85 for alginates from young Sargassum, mature Sargassum and Padina, respectively. This shows that mature Sargassum yields alginates with the lowest MIG ratio. was richer in the poly (a-L-guluronate) block. From these compositions, M/G ratios were estimated as 1.27, 0.64 and 0.85 for alginates from young Sargassum, mature Sargassum and Padina, respectively. This shows that mature Sargassum yields alginates with the lowest MIG ratio.
format	Article
author	Omar, Siraj Ahmad, Norasmah Ahmad, Fashihuddin
spellingShingle	Omar, Siraj Ahmad, Norasmah Ahmad, Fashihuddin Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp.
author_facet	Omar, Siraj Ahmad, Norasmah Ahmad, Fashihuddin
author_sort	Omar, Siraj
title	Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp.
title_short	Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp.
title_full	Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp.
title_fullStr	Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp.
title_full_unstemmed	Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp.
title_sort	composition of aiginates from brown seaweeds, sargassum and padina spp.
publishDate	1988
url	http://psasir.upm.edu.my/id/eprint/2557/ http://psasir.upm.edu.my/id/eprint/2557/1/Composition_of_Aiginates.pdf
first_indexed	2018-09-07T11:54:28Z
last_indexed	2018-09-07T11:54:28Z
_version_	1610949611059412992

Composition of Aiginates from Brown Seaweeds, Sargassum and Padina spp.

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