The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis

The high demand of seaweed for their polysaccharide namely carrageenan leads to the commercial production of carrageenophytes through mariculture. Based on literatures it is well documented that growth rate and carrageenan yield depend on environmental factors such as salinity, pH, temperatures, lig...

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Main Authors:	Mohamad Hidayat, Nor Salamah, Mohammad Noor, Normawaty, Darnis, Deny Susanti, Saad, Shahbudin, Mukai, Yukinori
Format:	Article
Language:	English English
Published:	Universiti Teknologi Malaysia 2015
Subjects:	Q Science (General)
Online Access:	http://irep.iium.edu.my/46437/ http://irep.iium.edu.my/46437/ http://irep.iium.edu.my/46437/ http://irep.iium.edu.my/46437/1/6728-18481-1-seaweed.pdf http://irep.iium.edu.my/46437/4/46437_The_effects_of_different_ph_and_salinities_on_growth_rate__SCOPUS.pdf

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recordtype	eprints
spelling	iium-464372018-06-25T04:36:45Z http://irep.iium.edu.my/46437/ The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis Mohamad Hidayat, Nor Salamah Mohammad Noor, Normawaty Darnis, Deny Susanti Saad, Shahbudin Mukai, Yukinori Q Science (General) The high demand of seaweed for their polysaccharide namely carrageenan leads to the commercial production of carrageenophytes through mariculture. Based on literatures it is well documented that growth rate and carrageenan yield depend on environmental factors such as salinity, pH, temperatures, light intensity and water movement. In this study, growth rate and carrageenan yield of Gracilaria manilaensis, a red seaweed, was determined at different pH and salinities. G. manilaensis was cultured under laboratory conditions in a 500 mL flask at different salinities (15 psu, 20 psu and 25 psu ) and pH (7.6, 7.8, and 8.0) for 21 days. At the end of experiment, the growth rate was determined followed by carrageenan analysis. From the analysis, growth rate was highest at salinity of 15 psu and pH 7.6 with 1.3 ± 0.2 % day-1.For carrageenan analysis, the seaweed was air dried for about a week until it reached a constant weight. Farmed G. manilaensis was used as control and carrageenan yield was determined from farmed G. manilaensis. It gives yield of 50.2 ± 10.9 %. For carrageenan yield analysis, the highest value was demonstrated at salinity of 25 psu and pH 8.0 with 91.7± 14.4 %. Result shows that carrageenan yields from G. manilaensis under laboratory conditions are higher compared to farmed Gracillaria. This indicates that the quality of G. manilaensis in term of carrageenan content can be optimized under certain growth conditions. This is important as this species has the potential to be commercialized for pharmaceutical and food industries. Universiti Teknologi Malaysia 2015-10-22 Article PeerReviewed application/pdf en http://irep.iium.edu.my/46437/1/6728-18481-1-seaweed.pdf application/pdf en http://irep.iium.edu.my/46437/4/46437_The_effects_of_different_ph_and_salinities_on_growth_rate__SCOPUS.pdf Mohamad Hidayat, Nor Salamah and Mohammad Noor, Normawaty and Darnis, Deny Susanti and Saad, Shahbudin and Mukai, Yukinori (2015) The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis. Jurnal Teknologi, 77 (25). pp. 1-5. ISSN 0127–9696 E-ISSN 2180-3722 http://www.jurnalteknologi.utm.my/index.php/jurnalteknologi/article/view/6728/4454 10.11113/jt.v77.6728
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	Q Science (General)
spellingShingle	Q Science (General) Mohamad Hidayat, Nor Salamah Mohammad Noor, Normawaty Darnis, Deny Susanti Saad, Shahbudin Mukai, Yukinori The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis
description	The high demand of seaweed for their polysaccharide namely carrageenan leads to the commercial production of carrageenophytes through mariculture. Based on literatures it is well documented that growth rate and carrageenan yield depend on environmental factors such as salinity, pH, temperatures, light intensity and water movement. In this study, growth rate and carrageenan yield of Gracilaria manilaensis, a red seaweed, was determined at different pH and salinities. G. manilaensis was cultured under laboratory conditions in a 500 mL flask at different salinities (15 psu, 20 psu and 25 psu ) and pH (7.6, 7.8, and 8.0) for 21 days. At the end of experiment, the growth rate was determined followed by carrageenan analysis. From the analysis, growth rate was highest at salinity of 15 psu and pH 7.6 with 1.3 ± 0.2 % day-1.For carrageenan analysis, the seaweed was air dried for about a week until it reached a constant weight. Farmed G. manilaensis was used as control and carrageenan yield was determined from farmed G. manilaensis. It gives yield of 50.2 ± 10.9 %. For carrageenan yield analysis, the highest value was demonstrated at salinity of 25 psu and pH 8.0 with 91.7± 14.4 %. Result shows that carrageenan yields from G. manilaensis under laboratory conditions are higher compared to farmed Gracillaria. This indicates that the quality of G. manilaensis in term of carrageenan content can be optimized under certain growth conditions. This is important as this species has the potential to be commercialized for pharmaceutical and food industries.
format	Article
author	Mohamad Hidayat, Nor Salamah Mohammad Noor, Normawaty Darnis, Deny Susanti Saad, Shahbudin Mukai, Yukinori
author_facet	Mohamad Hidayat, Nor Salamah Mohammad Noor, Normawaty Darnis, Deny Susanti Saad, Shahbudin Mukai, Yukinori
author_sort	Mohamad Hidayat, Nor Salamah
title	The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis
title_short	The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis
title_full	The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis
title_fullStr	The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis
title_full_unstemmed	The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis
title_sort	effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis
publisher	Universiti Teknologi Malaysia
publishDate	2015
url	http://irep.iium.edu.my/46437/ http://irep.iium.edu.my/46437/ http://irep.iium.edu.my/46437/ http://irep.iium.edu.my/46437/1/6728-18481-1-seaweed.pdf http://irep.iium.edu.my/46437/4/46437_The_effects_of_different_ph_and_salinities_on_growth_rate__SCOPUS.pdf
first_indexed	2023-09-18T21:06:07Z
last_indexed	2023-09-18T21:06:07Z
_version_	1777410944674037760

The effects of different ph and salinities on growth rate and carrageenan yield of gracilaria manilaensis

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