Variation of Native Agar Gel Strength in Light Deprived Gracilaria chilensis Bird, McLachlan et Oliveira
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J. A. Hemmingson
Abstract
Wild-grown Gracilaria chilensis subjected to a post-harvest period of light-deprived culture prior to extraction gave native agar with greatly improved gel strength. Two quite different sets of post-harvest seawater nutrient and motion conditions gave the greatest improvements in gel strength. Gel strengths of dialysis/freezethaw purified native agars (711–912 g cm−2 for a 1.5% w/w gel) compared favourably with those of a commercial bacteriological agar (645 g cm−2 for a 1.5% w/w gel). Such a post-harvest light deprivation regime might be a practical, environmentally friendly alternative to the chemical processing (alkali treatment) currently necessary for the production of food grade agar from Gracilaria chilensis.
Copyright © 2003 by Walter de Gruyter GmbH & Co. KG
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Articles in the same Issue
- Checklist of Mediterranean Free-living Dinoflagellates
- Taxonomic Notes on Marine Algae from Malaysia. X. Four Species of Dasya (Rhodophyceae), with the Descriptions of Dasya longifila sp. nov. and D. malaccensis sp. nov.
- The Density and Survival of Fucus vesiculosus L. (Fucales, Phaeophyta) on Different Bedrock Types on a Baltic Sea Moraine Coast
- Seasonal and Spatial Patterns of "Green Tides" (Ulvoid Algal Blooms) and Related Water Quality Parameters in the Coastal Waters of Washington State, USA
- Effect of Irradiance and Temperature on Photosynthesis and Growth of Two Antarctic Benthic Diatoms, Gyrosigma subsalinum and Odontella litigiosa
- Marine Ascomycetes from Algae and Animal Hosts
- Variation of Native Agar Gel Strength in Light Deprived Gracilaria chilensis Bird, McLachlan et Oliveira
- Fucols and Phlorethols from the Brown Alga Scytothamnus australis Hook. et Harv. (Chnoosporaceae)
- Meetings
