Effect of drying, storage temperature and air exposure on astaxanthin stability from Haematococcus pluvialis

Ahmed, Faruq, Li, Yan, Fanning, Kent, Netzel, Michael, and Schenk, Peer M. (2015) Effect of drying, storage temperature and air exposure on astaxanthin stability from Haematococcus pluvialis. Food Research International, 74. pp. 231-236.

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Abstract

Astaxanthin is a powerful antioxidant with various health benefits such as prevention of age-related macular degeneration and improvement of the immune system, liver and heart function. To improve the post-harvesting stability of astaxanthin used in food, feed and nutraceutical industries, the biomass of the high astaxanthin producing alga Haematococcus pluvialis was dried by spray- or freeze-drying and under vacuum or air at -20 degrees C to 37 degrees C for 20 weeks. Freeze-drying led to 41% higher astaxanthin recovery compared to commonly-used spray-drying. Low storage temperature (-20 degrees C, 4 degrees C) and vacuum-packing also showed higher astaxanthin stability with as little as 123 +/- 3.1% degradation during 20 weeks of storage. Cost-benefit analysis showed that freeze-drying followed by vacuum-packed storage at -20 degrees C can generate AUD$600 higher profit compared to spray-drying from 100 kg H. pluvialis powder. Therefore, freeze-drying can be suggested as a mild and more profitable method for ensuring longer shelf life of astaxanthin from H. pluvialis.

Item ID: 41812
Item Type: Article (Research - C1)
ISSN: 1873-7145
Keywords: astaxanthin, cost-benefit analysis, freeze-drying, Haematococcus pluvialis, spray-drying
Funders: James Cook University - The University of Queensland (JCU-UQ)
Projects and Grants: JCU-UQ JCU20732
Date Deposited: 08 Dec 2015 17:59
FoR Codes: 06 BIOLOGICAL SCIENCES > 0607 Plant Biology > 060701 Phycology (incl Marine Grasses) @ 50%
10 TECHNOLOGY > 1003 Industrial Biotechnology > 100302 Bioprocessing, Bioproduction and Bioproducts @ 50%
SEO Codes: 82 PLANT PRODUCTION AND PLANT PRIMARY PRODUCTS > 8203 Industrial Crops > 820399 Industrial Crops not elsewhere classified @ 100%
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