Influence of culture media and carbon sources on biomass productivityand oil content of the algae Sirogonium sticticum, Temnogyra reflexa,Uronema elongatum, and Chroococcus turgidus

Abstract

seeds contain oil in extractable quantities. Therefore, algae appear to be the cheapest source among all the renewable sources for biodiesel production. Green microalgae contain 20% to 70% lipid and exhibit extraordinary potential for cultivation as energy crops (Xu et al., 2006;de Vries et al., 2010). They do not need arable land for cultivation and can be grown in industrial, municipal, and agricultural effluents, and fresh-and seawater (Chinnasamy et al., 2010). The growth and oil producing efficiency of algae is much higher than that of conventional and oil seed crops such as corn and soybean (Li et al., 2008). Due to its high oil content, various countries like the UK, USA, China, Belgium, Denmark, India, and Singapore have started utilizing algae as a source of biofuels on a commercial scale.Cultivation modes and nutritional management affect the growth rate and biochemical composition of algae (Hsieh and Wu, 2009). Previous studies have demonstrated that the biomass and lipid content in some microalgae were affected by various cultivation conditions such as nitrogen supply and its sources (

Screening of Organisms and Optimization of Culture Media for the Production of Spirogyra

“…The composition of this media was correlated with the requirements of our selected species and enhanced its growth. Similar results were recorded by Alam et al (2015). They selected four algal species and studied their growth in BM soil media.…”

“…A-Z media (Prescott, 2007) 2. Bristol's media (Alam et al, 2015 ) 3. Bristol's soil media (Bristol media along with 10g soil)…”

Utilization of centrate for the outdoor production of marine microalgae at pilot-scale in flat-panel photobioreactors

“…Despite relatively high concentration of inorganic carbon in the inlet, at the outlet the inorganic carbon concentration was always low, with maximal values of 90 mg•l -1 , analogous to that found in natural seawater or freshwater sources, so exhausted culture broth being acceptable for safe releasing to environment. It has been reported that using wastewater the organic carbon contained on these effluents can enhance the productivity of microalgae cultures by favouring mixotrophic and including heterotrophic growth (Alam et al, 2015). However, based on the values here reported this fact don't take place when using centrate as nutrients source including at high percentages at which the cultures are stressed by excess of ammonium.…”

The Study of Pholas Orientalis’s Life Cycle and Its Relationship with the Ecological Parameters in States of Kedah, Perak and Selangor, Malaysia

“…Stressor also can become a factor for slow developmental of P. orientalis. Minimization of stressors factors with a combination of quality algae diets led to faster gonadal development and directly faster the maturation of P. orientalis [30]. It is shown that the physico-chemicals parameters at the study sites were compatible for the algal growth where the temperature was between 30 o C -34 o C, salinity between 20 o C -29 o C, and pH between 8 -8.5.…”

“…Nutrient content in soil and water may affect the quality of microalgae. Carbon for example, may enhance the lipid production of microalgae [30]. Nitrogen serves as important element for the growth and formation of protein and nucleic acid in algal cell.…”