EFECTO DE LA ZEOLITA NATURAL CLINOPTILITA SOBRE EL CRECIMIENTO DE DUNALIELLA SALINA (TEODORESCO, 1905) CULTIVADA EN UN FOTOBIORREACTOR DE MÚLTIPLES CÁMARAS OSCILANTES

Resumen

We studied the growth and production of pigment of microalgae Dunaliella salina cultivated in
photobioreactor multicamera oscillating outside laboratory conditions to evaluate the effect of different
concentrations of zeolite (ZC). Growth was evaluated by cell count and pigment content was performed
by spectrophotometric techniques. The results indicate that the concentration of 50 mgL-1 of ZC produced
a better stimulus on the growth of the microalga reaching maximum cell density (MDC) of 5.51 ±0.45 x 106
celmL-1, growth rate (μ) 0.37 ±0.03 divday-1 and duplication time (Td) of 1.87 ±0.02 days. Likewise,
produced a greater increase in the total chlorophyll and carotenoids in the logarithmic phase of values
15.554 ±0.77 and 0.50 ±0.01 mgmL-1, respectively. Chloroplastic pigments concentration per volume of
culture has a significant correlation with maximum cell density of D. salina treatments based on zeolite at
all stages of growth with rMDC, chla.tot= 0.89 y una rMDC, carot.tot=0.926 at a level of significance (p <0.01). The
results demonstrated the feasibility of using this product as a suitable substrate for the growth of the
microalga, being an innovative alternative and less costly to obtain significant metabolites.