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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Makara Journal of Technology
Prihantini, N. B.
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pertumbuhan Mikroalga Chlamydomonas dalam Medium Beneck dan Air Tanah yang Mengandung Insektisida Berbahan Aktif Klorpirifos Kurniasih, M.; Prihantini, N. B.; Nurtiyani, E.
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 8, No 1 (2003): February 2003
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (276.111 KB) | DOI: 10.24002/biota.v8i1.2827

Abstract

The research of insecticide effect to the growth of genus Chlamydomonas had been done.  Research was experimental study with block random design to 9 concentrations of chlorpiriphos containing insecticide in Beneck and soil water media i.e. 0 (control), 0.05, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35, and 0.40%.  Observations were done for 35 days.  Friedman test showed that there were some effects of media and insecticide concentrations on cell numbers of Chlamydomonas (cell/ml) in culture (p>0.05).  Dunnets test showed that mean of cell numbers of Chlamydomonas (cell/ml) differ (on p>0.05) and very differ (on p>0.01) on every concentrations in Beneck and soil water media.  Insecticide could reduced the cell size of Chlamydomonas, yet increased the number of cells on 0.05--0.30% concentrations in Beneck medium, and 0.05--0.20% concentrations in soil water medium.  On peak culture, insecticide with 0.10% concentration produced the highest cell numbers i.e. 21,179,167 cell/ml in Beneck medium, and 4,087,500 cell/ml in soil water medium.
The Study on Fluorescence Characteristics of Chlorella spp: pH Influence on Culture P., Retno Wigajatri; Handojo, Andrianto; Kurniawan, Hendrik; Prihantini, N. B.
Makara Journal of Technology Vol. 7, No. 2
Publisher : UI Scholars Hub

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Abstract

The Study on Fluorescence Characteristics of Chlorella spp: pH Influence on Culture. Experiments for measuring the fluorescence characteristics of Chlorella spp. by using high stability and high repetition rate nitrogen laser of energy 5 mJ with pulse duration of 5 ns have been carried out. The results show that for a cell concentration range from 2,625 cells/ml up to 2,769,000 cells/ml, the fluorescence intensities at pada λ = 687 nm have a linear relationship with the cell concentration. It has been also found that for a 7 days old chlorella culture, the pH variation at the starting culture influenced the cell concentration.
Co-Authors Andrianto Handojo, Andrianto Hendrik Kurniawan Kurniasih, M. Nurtiyani, E. P., Retno Wigajatri