Fourier Transform Infrared FTIR Spectroscopy for identification Chlorella vulgaris Beijerinck 1890 and Scenedesmus obliquus Turpin Kützing 1833
  
Yazarlar (7)
Dilek Yalçın Duygu
Abel Udo Udoh
Tülay Baykal Özer
Aydın Akbulut
Hacettepe Üniversitesi, Türkiye
Kazım Yıldız
Gazi Üniversitesi, Türkiye
Deniz Güler
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı African Journal of Biotechnology (Q4)
Dergi ISSN 1684-5315
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 02-2012
Cilt / Sayı / Sayfa 11 / 16 / 3817–3824 DOI 10.5897/AJB11.1863
Özet
Fourier transform infrared (FTIR) spectroscopy was used in this study to identify and determine spectral features of Chlorella vulgaris Beijerinck 1890 and Scenedesmus obliquus (Turpin) Kützing 1833. Two cultures were grown in a chemically-defined media under photoautotrophic culture conditions isolated from eutrophic freshwater lake in Ankara. For FTIR analyses, a view from the transmission region between 4000 and 500 cm-1 on the microscope was chosen. All FTIR spectra showed a closely similar sequence of 11 distinct bands and were assigned a range of vibrationally active chemical groups, including residual water (–OH), lipid (–CH2), cellulose (–C= O), protein (amide), nucleic acid (> P= O) and starch (–C–O). The nonparametric (Spearman) correlations revealed a high level of correlations between certain bands. Comparison of band intensities (normalized to amide I) using Mann-Whitney test demonstrated major differences in relative band intensities, with bands 1, 3 and 5 to 11 showing significant differences between the two algal species at the 99% significant level. While bands 8, 9 and 10 showed the highest variations (CV> 30%) in C. vulgaris, bands 1, 2, 3 and 7 with the highest variations (CV> 30%) in S. obliquus. The results show that FTIR technique has the potential to become applicable for the determination of single cell biomass composition from phytoplankton communities.
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