Current toxicity tests with microalgae are often criticized as being overly sensitive to metals because algae are cultured in metal-deficient media. If such bioassays overestimate copper toxicity in surface waters, the relevance of water quality guidelines derived from these tests is questionable. In this study, the effect of acclimation to copper at environmentally relevant concentrations, on ...

This work shows the results of biosynthesis silver nanoparticles using microalga Chlorella sp, growth media with different concentrations glycerol, between 5%–20%, and light temperature conditions. The synthesis was studied supernatants pellets from autotrophic, heterotrophic mixotrophic cultures microalga. presence verified by ultraviolet-visible spectroscopy samples showing highest concentrat...

Plant growth-promoting bacteria (PGPB) of the genus Azospirillum are known to enhance the growth of numerous agricultural crops. We are proposing the use of these bacteria as “microalgae-growth promoting bacteria” (MGPB) to enhance the cleaning capacity of polluted water by the freshwater microalgae Chlorella vulgaris and C. sorokiniana. Deliberate inoculation of Chlorella sp. with a terrestria...

Polusi logam berat dan implikasinya bagi kesehatan manusia lingkungan telah menyebabkan meningkatnya minat untuk mengembangkan pendekatan bioteknologi lingkungan. Lima berat, antara lain arsenik (As), timbal (Pb), merkuri (Hg), cadmium (Cd), kromium (Cr) bersifat karsinogenik serta menunjukkan toksisitas walaupun dalam jumlah yang sedikit dapat mengancam ekologi manusia. Mikroalga memiliki bebe...

We established artificial consortia of bacteria inoculated from soil and a green alga, Chlorella vulgaris NIES-227. The bacteria and the alga were mixed in a tube or partitioned in a dialysing culture vessel, and the bacterial composition was examined after cultivation. The community of bacteria formed in the consortia included those phylogenetically closely related to the genera Phenylobacteri...

Marine chlorophytes of the genus Chlorella are unicellular algae capable of accumulating a high proportion of cellular lipids that can be used for biodiesel production. In this study, we examined the broad physiological capabilities of a subtropical strain (C596) of Chlorella sp. "SAG-211-18" including its heterotrophic growth and tolerance to low salt. We found that the alga replicates more sl...

Total lipid contents of green (Chlorella pyrenoidosa, C), red (Porphyra tenera, N; Palmaria palmata, D), and brown (Laminaria japonica, K; Eisenia bicyclis, A; Undaria pinnatifida, W, WI; Hizikia fusiformis, H) commercial edible algal and cyanobacterial (Spirulina platensis, S) products, and autotrophically cultivated samples of the green microalga Chlorella kessleri (CK) and the cyanobacterium...