DAVRIY KULTIVATSIYA JARAYONIDA DUNALIELLA SALINA MIKROSUVO‘TI TOMONIDAN AZOT O‘ZLASHTIRILISH KINETIKASI
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Dunaliella salina mikroalgasining davriy (batch) kultivatsiyasi sharoitida biomassa to‘planishi va mineral azotning o‘zlashtirilish
dinamikasi o‘rganildi. Tadqiqot natijalari madaniyat o‘sishining lag, eksponensial, statsionar va biomassa kamayish bosqichlaridan
iborat bo‘lgan tipik sigmoidal xarakterga ega ekanligini ko‘rsatdi. Biomassaning maksimal konsentratsiyasi (1,10 g/l)
kultivatsiyaning 5-sutkasida qayd etildi va azotning jadal o‘zlashtirilishi bilan kuzatildi. Sakkizinchi sutkaga kelib oziqa muhitidagi
azot deyarli to‘liq tugadi, natijada hujayralar o‘sishi to‘xtab, tajriba oxiriga kelib biomassa 0,30 g/l gacha kamaydi. Oziqa
muhitidagi azot konsentratsiyasi bilan biomassa to‘planishi o‘rtasida yaqqol teskari bog‘liqlik aniqlandi, bu esa azotning D. salina
o‘sishini cheklovchi asosiy omillardan biri ekanligini tasdiqlaydi. Biomassaning maksimal hosildorligini ta’minlash uchun
kultivatsiyaning optimal davomiyligi 5–7 kun ekanligi ko‘rsatildi. Shu bilan birga, azot tanqisligi sharoitida kultivatsiyani davom
ettirish β-karotin va neytral lipidlar biosintezini rag‘batlantirish uchun qo‘llanishi mumkin. Olingan natijalar D. salina ni sanoat
miqyosida yetishtirishning texnologik rejimlarini optimallashtirishda amaliy ahamiyatga ega.
1. Maltsev, Y., & Maltseva, K. (2021). Nitrogen and phosphorus concentrations in nutrient media across various taxonomic and
ecological groups of microalgae. Journal of Applied Phycology, 33(4), 2121-2135.
2. Borowitzka, M. A. (2018). Commercial production of microalgae: ponds, tanks, tubes and fermenters. In Progress in
Industrial Microbiology (Vol. 52, pp. 117-135). Springer, Cham.
3. Wu, Z., Duangmanee, P., Zhao, P., Juntawong, N., & Ma, C. (2016). The effects of light, temperature, and nutrition on growth
and pigment accumulation of three Dunaliella salina strains isolated from saline soil. Jundishapur Journal of Microbiology,
9(1), e26732.
4. Chantzistrountsiou, X., Ntzouvaras, A., Papadaki, S., Tsirigoti, A., Tzovenis, I., & Economou-Amilli, A. (2023).
Carotenogenic Activity of Two Hypersaline Greek Dunaliella salina Strains under Nitrogen Deprivation and Salinity Stress.
Water, 15(2), 241.
5. Charioui, I., et al. (2019). Growth and Carotenoid Production in Dunaliella spp. Isolated from Hypersaline Habitats: Effect
of NaNO 3 Concentration. Journal of Basic & Applied Sciences, 15, 88-95.
6. Harvey, P. J., & Ben-Amotz, A. (2020). Towards a sustainable bioeconomy: production of β-carotene, omega-3 fatty acids
and biodiesel by Dunaliella salina. New Biotechnology, 56, 126-132.
7. Sui, Y., & Flammini, A. (2024). Optimization of nutrient feeding strategies for high-density cultivation of Dunaliella salina
in photobioreactors. Bioresource Technology, 391, 129910.
8. Kim, M., et al. (2022). Identification and characterization of Dunaliella salina OH214 strain newly isolated from a saltpan
in Korea. Algae, 37(3), 223-234.
9. Srinivasan, R., et al. (2025). Influence of macro-nutrients manipulation on biomass productivity and biochemical composition
of Dunaliella species. Journal of Biotechnology, 402, 45-54.
10. Guedes, A. C., Amaro, H. M., & Malcata, F. X. (2019). Microalgae as sources of high-value bioactive compounds—Insights
on industrial production. Marine Drugs, 17(10), 540.
11. Методы гидрохимических исследований основных биогенных элементов – М.: Изд-во ВНИРО, 1988. – 25 с.
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