Pigment stability studies in selected pigment-producing microbes from New Zealand environment

The industrial production of natural food colourants is already well-established and expanding. However, the range of natural colour-shades is still limited compared to synthetic dyes. Besides, the use of plant extracts is known to be expensive and uncompetitive to synthetic dyes due to their high p...

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Main Authors:	Kamarudin, Kamarul Rahim, Lewis, Gillian, Greenwood, David R., Villas-Bôas, Silas
Format:	Conference or Workshop Item
Language:	English
Published:	2009
Subjects:	Q Science (General)
Online Access:	http://irep.iium.edu.my/12952/ http://irep.iium.edu.my/12952/ http://irep.iium.edu.my/12952/1/Abstract_ComBio_2009_KAMARUL.pdf

id	iium-12952
recordtype	eprints
spelling	iium-129522012-01-27T02:41:08Z http://irep.iium.edu.my/12952/ Pigment stability studies in selected pigment-producing microbes from New Zealand environment Kamarudin, Kamarul Rahim Lewis, Gillian Greenwood, David R. Villas-Bôas, Silas Q Science (General) The industrial production of natural food colourants is already well-established and expanding. However, the range of natural colour-shades is still limited compared to synthetic dyes. Besides, the use of plant extracts is known to be expensive and uncompetitive to synthetic dyes due to their high production costs. Consequently, microorganisms are becoming a more popular alternative source for natural food grade pigments. Development of microbial food grade pigments are likely to cut down the high production cost of natural colours, thus leading to a cheaper source of natural food colourants among the modern consumers. Preceding commercialization, pigment stability and toxicity assessment are required in order to determine their suitability to the food industry. We, therefore, have screened 286 pigment-producing microbial strains isolated from New Zealand environment. Based on water solubility and colour-shades of interest, 41 pigments have been short-listed for pigment stability tests towards different pHs, temperatures and light. To date, our current results showed that 81% of the yellow-to-reddish water-soluble pigments and the red SVB-B50 water-insoluble pigment were stable at all ranges of temperature i.e. -20oC, 4oC, 60oC, 100oC and microwave heat. Light and pH stability tests are being carried out. Further to this study, metabolomics tools will be incorporated to elucidate the metabolic pathway for biosynthesis of a selected microbial pigment with most potential for industrial application, and metabolic engineering strategies will be determined aiming for improvement of the pigment production yields during fermentation. 2009-12-06 Conference or Workshop Item NonPeerReviewed application/pdf en http://irep.iium.edu.my/12952/1/Abstract_ComBio_2009_KAMARUL.pdf Kamarudin, Kamarul Rahim and Lewis, Gillian and Greenwood, David R. and Villas-Bôas, Silas (2009) Pigment stability studies in selected pigment-producing microbes from New Zealand environment. In: ComBio 2009, 6-10 December 2009, Christchurch Convention Centre, Christchurch, New Zealand. http://www.canterbury.ac.nz/conference/combio09/docs/Abstracts.pdf
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Kamarudin, Kamarul Rahim Lewis, Gillian Greenwood, David R. Villas-Bôas, Silas Pigment stability studies in selected pigment-producing microbes from New Zealand environment
description	The industrial production of natural food colourants is already well-established and expanding. However, the range of natural colour-shades is still limited compared to synthetic dyes. Besides, the use of plant extracts is known to be expensive and uncompetitive to synthetic dyes due to their high production costs. Consequently, microorganisms are becoming a more popular alternative source for natural food grade pigments. Development of microbial food grade pigments are likely to cut down the high production cost of natural colours, thus leading to a cheaper source of natural food colourants among the modern consumers. Preceding commercialization, pigment stability and toxicity assessment are required in order to determine their suitability to the food industry. We, therefore, have screened 286 pigment-producing microbial strains isolated from New Zealand environment. Based on water solubility and colour-shades of interest, 41 pigments have been short-listed for pigment stability tests towards different pHs, temperatures and light. To date, our current results showed that 81% of the yellow-to-reddish water-soluble pigments and the red SVB-B50 water-insoluble pigment were stable at all ranges of temperature i.e. -20oC, 4oC, 60oC, 100oC and microwave heat. Light and pH stability tests are being carried out. Further to this study, metabolomics tools will be incorporated to elucidate the metabolic pathway for biosynthesis of a selected microbial pigment with most potential for industrial application, and metabolic engineering strategies will be determined aiming for improvement of the pigment production yields during fermentation.
format	Conference or Workshop Item
author	Kamarudin, Kamarul Rahim Lewis, Gillian Greenwood, David R. Villas-Bôas, Silas
author_facet	Kamarudin, Kamarul Rahim Lewis, Gillian Greenwood, David R. Villas-Bôas, Silas
author_sort	Kamarudin, Kamarul Rahim
title	Pigment stability studies in selected pigment-producing microbes from New Zealand environment
title_short	Pigment stability studies in selected pigment-producing microbes from New Zealand environment
title_full	Pigment stability studies in selected pigment-producing microbes from New Zealand environment
title_fullStr	Pigment stability studies in selected pigment-producing microbes from New Zealand environment
title_full_unstemmed	Pigment stability studies in selected pigment-producing microbes from New Zealand environment
title_sort	pigment stability studies in selected pigment-producing microbes from new zealand environment
publishDate	2009
url	http://irep.iium.edu.my/12952/ http://irep.iium.edu.my/12952/ http://irep.iium.edu.my/12952/1/Abstract_ComBio_2009_KAMARUL.pdf
first_indexed	2023-09-18T20:22:05Z
last_indexed	2023-09-18T20:22:05Z
_version_	1777408173774209024

Pigment stability studies in selected pigment-producing microbes from New Zealand environment

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