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Chlorophyll is not accurate measurement for algal biomass


Paper Type 
 Contributed Paper
Title 
 Chlorophyll is not accurate measurement for algal biomass
Author 
 Rameshprabu Ramaraj **[a], David D-W. Tsai [a] and Paris Honglay Chen *[a]
Email 
 hlchen@dragon.nchu.edu.tw; rrameshprabu@gmail.com
Abstract:

Microalgae are key primary producers and their biomass is widely applied for the production of pharmaceutics, bioactive compounds and energy. Conventionally, the content of algal chlorophyll is considered an index for algal biomass. However, this study, we estimated algal biomass by direct measurement of total suspended solids (TSS) and correlated it with chlorophyll content. The results showed mean chlorophyll-a equal to 1.05 mg/L; chlorophyll-b 0.51 mg/L and chlorophyll-a+b 1.56 mg/L. Algal biomass as 161 mg/L was measured by dry weight (TSS). In statistical t-tests, F-tests and all the tested growth models, such as linear, quadratic, cubic, power, compound, inverse, logarithmic, exponential, s-curve and logistic models, we did not find any discernible relationship between all chlorophyll indices and TSS biomass. Hence, the conventional method of chlorophyll measurement might not be a good index for biomass estimation. 

Start & End Page 
 547 - 555
Received Date 
 2012-08-01
Revised Date 
Accepted Date 
 2013-03-19
Full Text 
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Keyword 
 Microalgae, Biomass, Chlorophyll, Total suspended solids, Eco-tech
Volume 
 Vol.40 No.4 (OCTOBER 2013)
DOI 
Citation 
 **[a] R.R., [a] D.D.T. and *[a] P.H.C., Chlorophyll is not accurate measurement for algal biomass, Chiang Mai Journal of Science, 2013; 40(4): 547-555.
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