Effects of myo-inositol concentration on growth and pigments of Nannochloropsis oculata culture

Inositols are used as growth promoting agents over plants. But microalgae are different from higher plant especially photosynthetic efficiency and productivity. According to the results of this study, myo-inositol addition to the culture medium of Nannochloropsis oculata provides higher cell densities. 100 mg L-1 myo-inositol added experimental group was reached to 1.42-fold cell mL-1 , while the 500 mg L-1 myo-inositol added group was reached to 1.28-fold cell mL-1 than the control group. Mean chlorophyll a per cell amounts were calculated for experimental groups and control groups as 0.052 pg cell-1 and 0.053 pg cell-1 , respectively. Mean total carotene per cell amounts were calculated for all groups as 0.016 pg cell-1 . These results show that no difference was occurred between all groups by chlorophyll a and total carotene amounts per cell. This study shows that myo-inositol use in microalgae production may provide higher yields.

Myo-inositol konsantrasyonunun Nannochloropsis oculata kültüründe büyüme ve pigmentleri üzerine etkileri

İnositoller, bitkilerde büyüme arttırıcı olarak kullanılmaktadır. Ancak, mikroalgler yüksek bitkilerden özellikle fotosentetik etkinlik ve üretkenlik açısından farklıdır. Bu çalışmada elde edilen verilere göre Nannochloropsis oculata kültür ortamına myo-inositol ilave edilmesi daha yüksek hücre yoğunluğuna neden olmaktadır. 100 mg L-1 myo-inositol ilave edilen grup kontrol grubuna göre 1,42 kat hücre mL-1 , 500 mg L-1 myo-inositol ilave edilen grup ise kontrol grubuna göre 1,28 kat hücre mL-1 yoğunluğa ulaşmıştır. Hücre başına ortalama klorofil a değerleri ise deneme grupları ve kontrol grubu için sırasıyla 0,052 pg hücre-1 ve 0,053 pg hücre-1 olarak hesaplanmıştır. Hücre başına ortalama toplam karoten miktarları ise tüm gruplar için 0,016 pg hücre-1 olarak hesaplanmıştır. Bu sonuçlar gruplar arasında hücre başına klorofil a ve toplam karoten miktarlarının değişmediğini göstermektedir. Bu çalışma, mikroalg üretiminde myo-inositol kullanımının daha fazla ürün elde edilmesini sağlayabileceğini ortaya koymaktadır.

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