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Optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model

In this study, a novel and cost-effective method for using onion peel as a biostimulant is presented to overcome the challenge of low microalgae biomass productivity. The study successfully optimized and modelled the extraction parameters, including solid-to-solvent (SS) ratio, temperature, and time...

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Main Authors: Suparmaniam, U., Lam, M.K., Rawindran, H., Lim, J.W., Pa'ee, K.F., Yong, K.T.L., Tan, I.S., Chin, B.L.F., Show, P.L., Lee, K.T.
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Published: Elsevier Ltd 2023
Online Access:http://scholars.utp.edu.my/id/eprint/37544/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85153210126&doi=10.1016%2fj.enconman.2023.117023&partnerID=40&md5=21fac17963cfa308298ff5122f4c5e14
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spelling oai:scholars.utp.edu.my:375442023-10-04T13:31:55Z http://scholars.utp.edu.my/id/eprint/37544/ Optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model Suparmaniam, U. Lam, M.K. Rawindran, H. Lim, J.W. Pa'ee, K.F. Yong, K.T.L. Tan, I.S. Chin, B.L.F. Show, P.L. Lee, K.T. In this study, a novel and cost-effective method for using onion peel as a biostimulant is presented to overcome the challenge of low microalgae biomass productivity. The study successfully optimized and modelled the extraction parameters, including solid-to-solvent (SS) ratio, temperature, and time, using the response surface methodology (RSM) tool. The results indicated a strong correlation between the extraction parameters and microalgae biomass concentration (BC) and lipid content (LC), with R2 values of 0.9440 and 0.9638, respectively. The optimum biostimulant extraction conditions were SS ratio of 0.006 g/mL, temperature of 90 °C at 1.00 h, attaining BC and LC of 1.76 g/L and 19.42 , respectively, without any negative impact on LC. Findings on bioactivities of biostimulant recovered at optimal extraction conditions supported its biostimulation capacity on microalgae, with reasonable total phenolic content (TPC) of 9.1094 ± 0.748 mg GAE/g dry weight, total flavonoid content (TFC) of 3.1307 ± 0.210 mg RE/g dry weight, and antioxidant activity (AA) of 78.65 ± 3.421 and 73.68 ± 9.608 for DPPH and ABTS inhibition, respectively. The results of this study suggest that biostimulant derived from onion waste has great potential for promoting rapid proliferation of microalgae even with extremely low inoculum cells. These findings present a promising roadmap for high-density microalgae farming, and the developed RSM model can be utilized for process optimization while improving the efficiency, quality, and cost-effectiveness of microalgae industry. © 2023 Elsevier Ltd Elsevier Ltd 2023 Article NonPeerReviewed Suparmaniam, U. and Lam, M.K. and Rawindran, H. and Lim, J.W. and Pa'ee, K.F. and Yong, K.T.L. and Tan, I.S. and Chin, B.L.F. and Show, P.L. and Lee, K.T. (2023) Optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model. Energy Conversion and Management, 286. ISSN 01968904 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85153210126&doi=10.1016%2fj.enconman.2023.117023&partnerID=40&md5=21fac17963cfa308298ff5122f4c5e14 10.1016/j.enconman.2023.117023 10.1016/j.enconman.2023.117023 10.1016/j.enconman.2023.117023
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description In this study, a novel and cost-effective method for using onion peel as a biostimulant is presented to overcome the challenge of low microalgae biomass productivity. The study successfully optimized and modelled the extraction parameters, including solid-to-solvent (SS) ratio, temperature, and time, using the response surface methodology (RSM) tool. The results indicated a strong correlation between the extraction parameters and microalgae biomass concentration (BC) and lipid content (LC), with R2 values of 0.9440 and 0.9638, respectively. The optimum biostimulant extraction conditions were SS ratio of 0.006 g/mL, temperature of 90 °C at 1.00 h, attaining BC and LC of 1.76 g/L and 19.42 , respectively, without any negative impact on LC. Findings on bioactivities of biostimulant recovered at optimal extraction conditions supported its biostimulation capacity on microalgae, with reasonable total phenolic content (TPC) of 9.1094 ± 0.748 mg GAE/g dry weight, total flavonoid content (TFC) of 3.1307 ± 0.210 mg RE/g dry weight, and antioxidant activity (AA) of 78.65 ± 3.421 and 73.68 ± 9.608 for DPPH and ABTS inhibition, respectively. The results of this study suggest that biostimulant derived from onion waste has great potential for promoting rapid proliferation of microalgae even with extremely low inoculum cells. These findings present a promising roadmap for high-density microalgae farming, and the developed RSM model can be utilized for process optimization while improving the efficiency, quality, and cost-effectiveness of microalgae industry. © 2023 Elsevier Ltd
format Article
author Suparmaniam, U.
Lam, M.K.
Rawindran, H.
Lim, J.W.
Pa'ee, K.F.
Yong, K.T.L.
Tan, I.S.
Chin, B.L.F.
Show, P.L.
Lee, K.T.
spellingShingle Suparmaniam, U.
Lam, M.K.
Rawindran, H.
Lim, J.W.
Pa'ee, K.F.
Yong, K.T.L.
Tan, I.S.
Chin, B.L.F.
Show, P.L.
Lee, K.T.
Optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model
author_facet Suparmaniam, U.
Lam, M.K.
Rawindran, H.
Lim, J.W.
Pa'ee, K.F.
Yong, K.T.L.
Tan, I.S.
Chin, B.L.F.
Show, P.L.
Lee, K.T.
author_sort Suparmaniam, U.
title Optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model
title_short Optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model
title_full Optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model
title_fullStr Optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model
title_full_unstemmed Optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model
title_sort optimizing extraction of antioxidative biostimulant from waste onion peels for microalgae cultivation via response surface model
publisher Elsevier Ltd
publishDate 2023
url http://scholars.utp.edu.my/id/eprint/37544/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85153210126&doi=10.1016%2fj.enconman.2023.117023&partnerID=40&md5=21fac17963cfa308298ff5122f4c5e14
_version_ 1779441399754653696
score 13.211869

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