Defence Institute of Bio-Energy Research Defence R&D Organization, Ministry of Defence, Govt. of India, Field Station, Pithoragarh 262 501, Uttarakhand, India.
Bioresour Technol. 2013 Mar;131:246-9. doi: 10.1016/j.biortech.2012.12.159. Epub 2013 Jan 4.
The influence of different nitrogen source of varying concentrations on biomass production of green algae Scenedesmus was investigated. The result revealed that there was a significant difference among nitrogen sources in promoting algal biomass growth at lower concentrations of 5 and 10 mM. Nitrate was found to be a preferred form of nitrogen source and potassium (0.32 g/L) and sodium nitrates (0.28 g/L) performed better for biomass growth of Scenedesmus. Among the ammonical forms, urea (0.25 g/L) resulted in almost equal biomass as nitrates, making it an economical substitute for nitrogen source in large scale culturing of algae being commercially available.
研究了不同浓度的不同氮源对绿藻小球藻生物量生产的影响。结果表明，在较低浓度 5 和 10 mM 下，氮源对藻类生物量生长的促进作用存在显著差异。硝酸盐被发现是一种更优的氮源形式，钾（0.32 g/L）和硝酸钠（0.28 g/L）对小球藻的生物量生长表现更好。在氨态形式中，尿素（0.25 g/L）的生物量几乎与硝酸盐相当，使其成为大规模藻类养殖中经济实惠的氮源替代品，这些藻类在商业上是可利用的。
