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Physiological characterization of Dunaliella sp. (Chlorophyta, Volvocales) from Yucatan, Mexico [An article from: Bioresource Technology]
Book Details
PublisherElsevier
ISBN / ASINB000PDSF2M
ISBN-13978B000PDSF26
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Bioresource Technology, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Physiological responses of Dunaliella salina and Dunaliella viridis, isolated from solar saltworks on the Yucatan Peninsula, were studied. Optimal growth temperature for D. salina was 22^oC (3.06x10^6 cellsmL^-^1) and 26^oC for D. viridis (4.04x10^6cellsmL^-^1). Total carotenoid content in D. salina increased with temperature to a maximum of 35.14pgcell^-^1 at 38^oC. Dunaliella salina @a-carotene and @b-carotene content was 0.083+/-0.003 and 0.598+/-0.020mg 100g dry wt^-^1 respectively, whereas lower values were found in D. viridis cultured under same experimental conditions (0.018+/-0.002 and 0.136+/-0.012mg 100g dry wt^-^1 respectively). The highest specific growth rate in D. salina was obtained at 10% NaCl (0.28d^-^1), while its cell volume increased from 524 to 2066.93@mm^3 when cultured from 10% to 35% NaCl. Maximum photosynthetic rates were attained when increasing from optimal growing temperature to 30^oC for D. viridis (108nmol O"2@mgchlah^-^1) and D. salina (139nmol O"2@mgchl ah^-^1). Photosynthetic responses to temperature variations indicated physiological adjustments in both species, with higher acclimation in D. salina. Evaluation of physiological attributes of these species will be used for to carry out mass cultivation.
Description:
Physiological responses of Dunaliella salina and Dunaliella viridis, isolated from solar saltworks on the Yucatan Peninsula, were studied. Optimal growth temperature for D. salina was 22^oC (3.06x10^6 cellsmL^-^1) and 26^oC for D. viridis (4.04x10^6cellsmL^-^1). Total carotenoid content in D. salina increased with temperature to a maximum of 35.14pgcell^-^1 at 38^oC. Dunaliella salina @a-carotene and @b-carotene content was 0.083+/-0.003 and 0.598+/-0.020mg 100g dry wt^-^1 respectively, whereas lower values were found in D. viridis cultured under same experimental conditions (0.018+/-0.002 and 0.136+/-0.012mg 100g dry wt^-^1 respectively). The highest specific growth rate in D. salina was obtained at 10% NaCl (0.28d^-^1), while its cell volume increased from 524 to 2066.93@mm^3 when cultured from 10% to 35% NaCl. Maximum photosynthetic rates were attained when increasing from optimal growing temperature to 30^oC for D. viridis (108nmol O"2@mgchlah^-^1) and D. salina (139nmol O"2@mgchl ah^-^1). Photosynthetic responses to temperature variations indicated physiological adjustments in both species, with higher acclimation in D. salina. Evaluation of physiological attributes of these species will be used for to carry out mass cultivation.
