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UV-B irradiation effect on microalgae performance in the remediation of effluent derived from the cigarette butt cleaning process

UV-B irradiation effect on microalgae performance in the remediation of effluent derived from the cigarette butt cleaning process


Titill: UV-B irradiation effect on microalgae performance in the remediation of effluent derived from the cigarette butt cleaning process
Höfundur: Huarancca Reyes, Thais
Mariotti, Lorenzo
Chiellini, Carolina
Guglielminetti, Lorenzo
Fonseca, Gustavo Graciano
Útgáfa: 2022-09
Tungumál: Enska
Umfang: 1706693
Svið: School of Business and Science
Birtist í: Plants; 11(18)
ISSN: 2223-7747
DOI: 10.3390/plants11182356
Efnisorð: Chlorella sorokiniana; flavonoids; nicotine; nicotyrine; non-enzymatic antioxidants; phenolic compounds; photosynthetic pigments; ultraviolet light; Ecology, Evolution, Behavior and Systematics; Ecology; Plant Science
URI: https://hdl.handle.net/20.500.11815/3689

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Tilvitnun:

Huarancca Reyes , T , Mariotti , L , Chiellini , C , Guglielminetti , L & Fonseca , G G 2022 , ' UV-B irradiation effect on microalgae performance in the remediation of effluent derived from the cigarette butt cleaning process ' , Plants , vol. 11 , no. 18 , 2356 . https://doi.org/10.3390/plants11182356

Útdráttur:

 
Abstract: In this study, the potential of ultraviolet B (UV-B) radiation to alleviate the effects of pollutants in cigarette butt wastewater (CBW) was investigated using different Chlorella sorokiniana strains (F4, R1 and LG1). Microalgae were treated with UV-B (1.7 W m−2 ) for 3 days prior to their exposure to CBW and then incubated for 4 days in the absence or presence of UV-B. UV-B-untreated microalgae were used as the control. Comparative physiological responses, including photosynthetic pigments and non-enzymatic antioxidants, as well as nicotine and nicotyrine removal, were evaluated in 7-day cultures. UV-B treatments did not negatively impact algal chlorophyll or carotenoid production. UV-B acclimation was strain-dependent, correlating with native environment adaptations and genetic constitutions. UV-B as a pretreatment had long-term positive effects on non-enzymatic antioxidant capacity. However, LG1 needed more time to readjust the pro-oxidant/antioxidant balance, as it was the most UV-B-sensitive. Phenolic compounds played an important role in the antioxidant system response to UV-B, while flavonoids did not contribute to the total antioxidant capacity. Although cross-resistance between UV-B and CBW was observed in F4 and R1, only R1 showed nicotine/nicotyrine catabolism induction due to UV-B. Overall, the results suggest that UV-B activates defense pathways associated with resistance or tolerance to nicotine and nicotyrine.
 
In this study, the potential of ultraviolet B (UV-B) radiation to alleviate the effects of pollutants in cigarette butt wastewater (CBW) was investigated using different Chlorella sorokiniana strains (F4, R1 and LG1). Microalgae were treated with UV-B (1.7 W m−2) for 3 days prior to their exposure to CBW and then incubated for 4 days in the absence or presence of UV-B. UV-B-untreated microalgae were used as the control. Comparative physiological responses, including photosynthetic pigments and non-enzymatic antioxidants, as well as nicotine and nicotyrine removal, were evaluated in 7-day cultures. UV-B treatments did not negatively impact algal chlorophyll or carotenoid production. UV-B acclimation was strain-dependent, correlating with native environment adaptations and genetic constitutions. UV-B as a pretreatment had long-term positive effects on non-enzymatic antioxidant capacity. However, LG1 needed more time to readjust the pro-oxidant/antioxidant balance, as it was the most UV-B-sensitive. Phenolic compounds played an important role in the antioxidant system response to UV-B, while flavonoids did not contribute to the total antioxidant capacity. Although cross-resistance between UV-B and CBW was observed in F4 and R1, only R1 showed nicotine/nicotyrine catabolism induction due to UV-B. Overall, the results suggest that UV-B activates defense pathways associated with resistance or tolerance to nicotine and nicotyrine.
 

Athugasemdir:

Funding Information: This research was funded by the Fondazione Cassa di Risparmio di Lucca, grant number FOCUS 2019/2021. Publisher Copyright: © 2022 by the authors.

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