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Kurniati Kemer
UNSRAT
Earth & Planetary Sciences

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Efek Senyawa Timbal Asetat Terhadap Pertumbuhan Dan Kandungan Pigmen Klorofil Mikroalga Dunaliella sp. Joshep Tamalonggehe; Kurniati Kemer; Darus Sa’adah J Paransa; Desy MH Mantiri; Nickson J Kawung; Suzanne L Undap
JURNAL PESISIR DAN LAUT TROPIS Vol. 8 No. 2 (2020): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.8.2.2020.28764

Abstract

Microalgae is one of the marine biota that has an important role in the waters because it acts as a supplier of food in the waters. Microalgae is a biological source that needs to be exploited because it is rich in essential compounds. Dunaliella sp. is one of the many micro algae used as research. Utilization of Dunaliella sp. quite diverse and has been marketed in developed countries because of its very attractive economic value. This study aims to determine the effects of lead acetate compounds on growth and content of chlorophyll pigments microalgae Dunaliella sp. The results obtained in this study are the lead acetate compounds can affect the number of cells in the growth of microalgae and analysis results obtained with a spectrophotometer showed that the extraction concentration of control day 5 (Exponential Phase) was higher than the concentration of 15 ppm and 25 ppm, whereas extraction on day 21 (Death Phase) concentration of 15 ppm was higher than 25 ppm.Keywords : Dunalella sp., Lead Acetate, Pigment chlorophyll RingkasanMikroalga adalah salah satu biota laut yang memiliki peran penting di perairan karena berfungsi sebagai pemasok makanan di perairan. Mikroalga adalah sumber biologis yang perlu dieksploitasi karena kaya akan senyawa esensial. Dunaliella sp. adalah salah satu dari banyak mikroalga yang digunakan sebagai penelitian. Pemanfaatan Dunaliella sp. cukup beragam dan telah dipasarkan di negara maju karena nilai ekonominya yang sangat menarik. Penelitian ini bertujuan untuk mengetahui efek senyawa timbal asetat terhadap pertumbuhan dan kandungan pigmen klorofil Dunaliella sp. Hasil yang diperoleh dalam penelitian ini adalah senyawa timbal asetat dapat mempengaruhi jumlah sel dalam pertumbuhan mikroalga, penurunan jumlah sel mengikuti konsentrasi timbal asetat yang diberikan dan hasil analisis yang diperoleh dengan spektrofotometer menunjukkan bahwa konsentrasi ekstraksi kontrol hari 5 (Fase Eksponensial) lebih tinggi daripada konsentrasi 15 ppm dan 25 ppm, sedangkan ekstraksi hari 21 (Fase Kematian) konsentrasi 15 ppm lebih tinggi dari 25 ppm.Kata kunci : Dunaliella sp., Timbal Asetat, Pigmen Klorofil
LAJU PERTUMBUHAN DAN KEPADATAN MIKROALGA Dunaliella sp. PADA PEMBERIAN TIMBAL ASETAT DENGAN KONSENTRASI YANG BERBEDA Fitly Tewal; Kurniati Kemer; Joice R.T.S.L. Rimper; Desy M.H. Mantiri; Wilmy E Pelle; Joppy D Mudeng
JURNAL PESISIR DAN LAUT TROPIS Vol. 9 No. 1 (2021): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.1.2021.33571

Abstract

Microalgae are organisms that contain chlorophyll and other pigments so they can carry out photosynthesis. Microalgae are widespread in nature and can be found in any environment exposed to sunlight. Microalgae are micro-sized biota with a diameter of less than 2 µm. The benefits of microalgae for other living things, especially humans, are numerous, including as a source of food and ingredients in the manufacture of medicines. Dunaliella sp. is a group of green algae that contains protein, fat and carbohydrates as a good source of food. Growth rate and density of microalgae Dunaliella sp. and the effect of lead acetate with different concentrations was observed using a microscope, starting from the lag phase, the logarithmic phase, the stationary phase and the declination phase. Dunaliella sp. Experiencing an exponential phase in the observation before treatment, namely on the 9th day and then doing the treatment. Treatment with lead acetate with concentrations of 10 ppm, 50 ppm and 80 ppm is very influential in the growth of microalgae. The result is that lead acetate contains toxins that can kill microalgae cells in both low and high concentrations.Keywords: Microalgae, Dunaliella sp., Lead Acetate, Concentration
Co-Authors Darus S. Paransa Fitly Tewal Joice R.T.S.L. Rimper Joppy D Mudeng Joshep Tamalonggehe Mantiri, Desy M. H Nickson J Kawung Suzanne L Undap Wilmy E Pelle