Comparative study of Spirulina sp. Growth under conditions of autotrophic, heterotrophic and mixotrophic culture

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 271

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شناسه ملی سند علمی:

BIOCONF20_680

تاریخ نمایه سازی: 28 اردیبهشت 1398

چکیده مقاله:

Spirulina algae are among the algae that have been adapted to feed and supply energy in different environments. As a result, it can use different sources to obtain carbon. In order to produce the highest amount of biomass, growth conditions can have a significant impact on the carbon source by autotrophic, heterotrophic or mixotrophic methods. Accordingly, the growth of Spirulina microalgae in these three conditions was studied in a logarithmic growth stage and in order to compare the growth and amount of the produced biosynthesis. In this study, the growth curve and some growth factors including carbohydrates, photosynthetic pigments (chlorophylls a and b), beta-carotene and total protein were measured. The results showed that although the growth curve in autotrophic and mixotrophic culture conditions was almost similar, they were in better conditions than heterotrophic culture and were significantly different. Biomass production, protein, and photosynthetic pigmentation rates also confirm the difference between the growth curves of autotrophic and mixotrophic cultures and show that these growth indices have higher levels in autotrophic and mixotrophic cultures. In contrast, the oxidative stress index (malondialdehyde) was the highest in heterotrophic culture, indicating a better adaptation of spirulina for growth in autotrophic and heterotrophic cultures.

نویسندگان

Tahereh Nobakht,

Department of Biology, Faculty of Basic Science, University of Guilan

Davod Dadashi

Department of Biology, Faculty of Basic Science, University of Guilan

Akbar Norastehnia

Department of Biology, Faculty of Basic Science, University of Guilan