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Effects of light quality on microalgae cultivation: bibliometric analysis, mini-review, and regulation approaches

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Abstract

The ever-increasing concern for energy shortages and greenhouse effect has triggered the development of sustainable green technologies. Microalgae have received more attention due to the characteristics of biofuel production and CO2 fixation. From the perspective of autotrophic growth, the optimization of light quality has the potential to promote biomass production and bio-component accumulation in microalgae at low cost. In this study, bibliometric analysis was used to describe the basic features, identify the hotspots, and predict future trends of the research related to the light quality on microalgae cultivation. In addition, a mini-review referring to regulation methods of light quality was provided to optimize the framework of research. Results demonstrated that China has the greatest interest in this area. The destination of most research was to obtain biofuels and high-value-added products. Both blue and red lights were identified as the crucial spectrums for microalgae cultivation. However, sunlight is the most affordable light resource, which could not be fully utilized by microalgae through the photosynthetic process. Hence, some regulation approaches (e.g., dyes, plasmonic scattering, and carbon-based quantum dots) are proposed to increase the proportion of beneficial spectrum for enhancement of photosynthetic efficiency. In summary, this review introduces state-of-the-art research and provides theoretical guidance for light quality optimization in microalgae cultivation to obtain more benefits.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

This work was supported by the National Natural Science Foundation of China [U21A20322, 42006139], China Baowu Low Carbon Metallurgy Innovation Foundation-BWLCF202105, and the Foundation of State Key Laboratory of Pollution Control and Resource Reuse (Tongji University) [No. 2022–4-ZD-05].

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All authors contributed to the study conception and design. Yongyuan Hong and Libin Yang: conceived the manuscript. Yongyuan Hong and Yalei Zhang: scientometric analysis part. Yongyuan Hong, Xiaogang You and Haigeng Zhang: light quality review and regulation approach part. Yongyuan Hong, Libin Yang, Xiaying Xin, and Xuefei Zhou: original draft, review, and editing. Libin Yang, Xuefei Zhou, and Yalei Zhang: funding acquisition. All authors read and approved the final manuscript.

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Correspondence to Libin Yang.

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Hong, Y., Yang, L., You, X. et al. Effects of light quality on microalgae cultivation: bibliometric analysis, mini-review, and regulation approaches. Environ Sci Pollut Res (2023). https://doi.org/10.1007/s11356-023-31192-2

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  • DOI: https://doi.org/10.1007/s11356-023-31192-2

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