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VOL. 10, ISSUE 8 (2025)
Electric field assisted improvement of growth and photosynthetic efficiency of Chlorella sorokiniana
Authors
Pinky Dotaniya, GP Singh
Abstract
This study investigated the influence of electric field (EF) exposure
on growth and photosynthetic pigment content in Chlorella sorokiniana
over a five-week incubation period. Microalgal cultures were subjected to EF
treatment at 2kV for 25, 50, 75, 100, and 125 minutes, and changes in dry cell
weight (DCW) and chlorophyll content (Chl a, Chl b, and total chlorophyll) were
evaluated. DCW increased in all treatments with time, reaching the highest
improvement in cultures treated for 50 min, which exhibited up to 4.9% higher
biomass than control by 2nd week. However, exposure beyond 75 min
resulted in a decline, with 5-week DCW decreasing by ~2%–5% compared to
control. Photosynthetic pigments exhibited a similar trend: Chl a content
increased 2.8 folds to 3.9 folds across treatments, with the highest
enhancement (up to 130.4% over control) in 50-min treated cells. Chl b and
total chlorophyll followed a comparable pattern, showing maximum increases of
4.2-folds and ~116% over control, respectively, after 50-min EF exposure.
Prolonged exposure (≥75 min) caused decline in pigment accumulation, though
values remained higher than control. These findings demonstrate that moderate
EF exposure (50 min) enhances biomass and photosynthetic efficiency in C.
sorokiniana, while prolonged exposure may impose stress, reducing growth
and pigment synthesis.
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Pages:79-84
How to cite this article:
Pinky Dotaniya, GP Singh "Electric field assisted improvement of growth and photosynthetic efficiency of <i>Chlorella sorokiniana</i>". International Journal of Botany Studies, Vol 10, Issue 8, 2025, Pages 79-84
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