Abstract
The effect of alkali pre-treatments on the properties of agar obtained from Gelidiella acerosa and Gelidium pusillum growing along the West and South coast of India was studied in order to evaluate its potential for industrial use. Agar samples
were extracted by hot water extraction and termed native agar, and alkali pre-treatment was carried out with various NaOH
concentrations e.g. 4%, 6%, 8%, 10% and 15%, to optimise the alkali concentration for preparation of alkali-treated agar.
Gelidiella acerosa and Gelidium pusillum produced superior quality agar polymers having greater gel strengths 2,000 ± 50 and 1,400 ± 50 g cm−2 and lower sulphate contents ≤0.30% and ≤0.50%, respectively, as opposed the low gel strength and high sulphate content agars
reported in the literature. Furthermore, the physicochemical properties of agars were identical with the commercially available
agars. The results of this study revealed that Indian agarophytes may be used for production of superior quality agar and
agaroses, which may be used for food and biological applications.
were extracted by hot water extraction and termed native agar, and alkali pre-treatment was carried out with various NaOH
concentrations e.g. 4%, 6%, 8%, 10% and 15%, to optimise the alkali concentration for preparation of alkali-treated agar.
Gelidiella acerosa and Gelidium pusillum produced superior quality agar polymers having greater gel strengths 2,000 ± 50 and 1,400 ± 50 g cm−2 and lower sulphate contents ≤0.30% and ≤0.50%, respectively, as opposed the low gel strength and high sulphate content agars
reported in the literature. Furthermore, the physicochemical properties of agars were identical with the commercially available
agars. The results of this study revealed that Indian agarophytes may be used for production of superior quality agar and
agaroses, which may be used for food and biological applications.
- Content Type Journal Article
- DOI 10.1007/s10811-010-9523-9
- Authors
- Ramavatar Meena, Council of Scientific Industrial & Research, India Marine Biotechnology and Ecology Discipline, Central Salt & Marine Chemicals Research Institute G. B. Marg Bhavnagar 364 002 Gujarat India
- Kamalesh Prasad, Council of Scientific Industrial & Research, India Marine Biotechnology and Ecology Discipline, Central Salt & Marine Chemicals Research Institute G. B. Marg Bhavnagar 364 002 Gujarat India
- A. K. Siddhanta, Council of Scientific Industrial & Research, India Marine Biotechnology and Ecology Discipline, Central Salt & Marine Chemicals Research Institute G. B. Marg Bhavnagar 364 002 Gujarat India
- Journal Journal of Applied Phycology
- Online ISSN 1573-5176
- Print ISSN 0921-8971
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