@article{0eee2c7fbc314dedbc8f314f5b460683,
title = "Enhanced Algal Photosynthetic Photon Efficiency by Pulsed Light",
abstract = "We present experimental results demonstrating that, relative to continuous illumination, an increase of a factor of 3–10 in the photon efficiency of algal photosynthesis is attainable via the judicious application of pulsed light for light intensities of practical interest (e.g., average-to-peak solar irradiance). We also propose a simple model that can account for all the measurements. The model (1) reflects the essential rate-limiting elements in bioproductivity, (2) incorporates the impact of photon arrival-time statistics, and (3) accounts for how the enhancement in photon efficiency depends on the timescales of light pulsing and photon flux density. The key is avoiding “clogging” of the photosynthetic pathway by properly timing the light-dark cycles experienced by algal cells. We show how this can be realized with pulsed light sources, or by producing pulsed-light effects from continuous illumination via turbulent mixing in dense algal cultures in thin photobioreactors.",
keywords = "biochemical analyses, biochemical mechanism, plant biochemistry",
author = "Yair Zarmi and Gordon, {Jeffrey M.} and Amit Mahulkar and Khopkar, {Avinash R.} and Patil, {Smita D.} and Arun Banerjee and Reddy, {Badari Gade} and Griffin, {Thomas P.} and Ajit Sapre",
note = "Funding Information: Y.Z. and J.M.G. express appreciation for financial support for this research from Reliance Industries Ltd. J.M.G. gratefully acknowledges the hospitality and support of the Institute of Advanced Studies of the University of Western Australia during the writing of this paper. The RIL authors gratefully acknowledge Sridharan Govindachary for his technical input about the photosynthetic process. Y.Z.: conceptualization, investigation, visualization, methodology, validation, formal analysis, writing, review & editing; J.M.G.: conceptualization, investigation, visualization, methodology, validation, formal analysis, writing, review & editing; A.M.: investigation, methodology, data curation, formal analysis, writing, review & editing; A.R.K.: conceptualization, validation, resources, supervision, writing, review & editing; S.D.P.: investigation, data curation, methodology, writing, review & editing; A.B.: conceptualization, validation, writing, review & editing; B.G.R.: investigation; T.P.G.: conceptualization, project administration, writing, review & editing; A.S.: conceptualization, funding acquisition, writing, review & editing. The authors have no conflict of interest to declare. Funding Information: Y.Z. and J.M.G. express appreciation for financial support for this research from Reliance Industries Ltd . J.M.G. gratefully acknowledges the hospitality and support of the Institute of Advanced Studies of the University of Western Australia during the writing of this paper. The RIL authors gratefully acknowledge Sridharan Govindachary for his technical input about the photosynthetic process. Publisher Copyright: {\textcopyright} 2020 The Author(s)",
year = "2020",
month = may,
day = "22",
doi = "10.1016/j.isci.2020.101115",
language = "English",
volume = "23",
journal = "iScience",
issn = "2589-0042",
publisher = "Elsevier Inc.",
number = "5",
}