Foam fractionation for promoting rhamnolipids production by Pseudomonas aeruginosa D1 using animal fat hydrolysate as carbon source and its application in intensifying phytoremediation

Jia, Lei; Zhou, Jingping; Cao, Jilin; Wu, Zhaoliang; Liu, Wei; Yang, Chunyan

doi:10.1016/j.cep.2020.108177

Cited by 16 publications

(9 citation statements)

References 44 publications

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“…Rhamnolipids (RLS), well known as a glycolipid biosurfactants, are mainly secreted by Pseudomonas aeruginosa strains. 6 They are formed by mono-or di-L-rhamnoses, linked through a betaglycosidic bond to hydroxyacyl moieties. 7 Their low toxicity, high biodegradability, and strong antibacterial activity are of great benefit for application in various fields such as food, the environment, and medicine.…”

Section: Introductionmentioning

confidence: 99%

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Rhamnolipids enhance growth performance by improving the immunity, intestinal barrier function, and metabolome composition in broilers

Zhang¹,

Zhang²,

Liu

et al. 2021

J Sci Food Agric

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BACKGROUND: Rhamnolipids (RLS), well known as glycolipid biosurfactants, display low toxicity, high biodegradability, and strong antibacterial properties. This study was carried out to evaluate the use of RLS supplementation as a substitute for antibiotics, and particularly to evaluate its effects on growth performance, immunity, intestinal barrier function, and metabolome composition in broilers. RESULTS:The RLS treatment improved the growth performance, immunity, and intestinal barrier function in broilers. The 16S rRNA sequencing revealed that the genus Alistipes was the dominant genus in broilers treated by RLS. An ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS)-based metabolomic analysis indicated that the sphingolipid metabolism, glycine, serine, and threonine metabolism, the gycerophospholipid metabolism, and the tryptophan metabolism were changed in broilers that were treated with RLS.CONCLUSION: L-Tryptophan may be the medium for RLS to regulate the growth and physiological metabolism. Rhamnolipids can be used as a potential alternative to antibiotics, with similar functions to antibiotics in the diet of broilers. The optimal level of supplemented RLS in the diet was 1000 mg kg −1 .

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Section: Introductionmentioning

confidence: 99%

“…Rhamnolipids (RLS), well known as a glycolipid biosurfactants, are mainly secreted by Pseudomonas aeruginosa strains 6 . They are formed by mono‐ or di‐ l ‐rhamnoses, linked through a beta‐glycosidic bond to hydroxyacyl moieties 7 .…”

Section: Introductionmentioning

confidence: 99%

Rhamnolipids enhance growth performance by improving the immunity, intestinal barrier function, and metabolome composition in broilers

Zhang¹,

Zhang²,

Liu

et al. 2021

J Sci Food Agric

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“…Classical mechanical foam disruption methods include stirring or applying mechanical rotors in the collecting vessel (Alonso & Martin, 2016; Jia et al, 2020). An application of a cyclone to separate the gas phase from the liquid phase was described by Czinkóczky and Németh (2020).…”

Section: Foam Disruption Methods Applied With Foam Fractionationmentioning

confidence: 99%

Foam fractionation methods in aerobic fermentation processes

Oraby

Weickardt

Zibek

2022

Biotech & Bioengineering

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Inherently occurring foam formation during aerobic fermentation of surface-active compounds can be exploited by fractionating the foam. This also serves as the first downstream processing step for product concentration and is used for in situ product recovery. Compared to other foam prevention methods, it does not interfere with fermentation parameters or alter broth composition. Nevertheless, parameters affecting the foaming behavior are complex. Therefore, the specific foam fractionation designs need to be engineered for each fermentation individually. This still hinders a widespread industrial application. However, few available commercial approaches demonstrate the applicability of foam columns on an industrial scale. This systematic literature review highlights relevant design aspects and process demands that need to be considered for an application to fermentations and proposes a classification of foam fractionation designs and methods. It further analyses substance-specific characteristics associated with foam fractionation. Finally, solutions for current challenges are presented, and future perspectives are discussed.

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“…The objective of foam separation was to concentrate the rhamnolipids as much as possible using the fermentation medium as the initial feeding solution. Rhamnolipids were isolated from the culture medium by acid precipitation [28]. Then, the isolated rhamnolipids were added as surfactants to a second-stage foam separation column containing Cu wastewater.…”

Section: Foam Separation Experimentsmentioning

confidence: 99%

Removal of Cu Ions in Wastewater through a Combined Foam Separation‐Cell Adsorption Approach

Hou

Meng

et al. 2022

Chem Eng & Technol

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The removal of heavy metal pollutants from industrial wastewater is important to ensure the safety of the environment and humans. In this study, rhamnolipids from Pseudomonas aeruginosa were used to treat synthetic wastewater containing Cu ions (100 mg L -1 ) by foam separation. A high removal efficiency of 99.52 % was achieved when the somatic cells of inactivated P. aeruginosa were used as biosorbents. The analysis of the adsorption kinetics showed that dynamic biosorption followed the Langmuir isotherm model and that the bacterial cells had a strong adsorption effect on Cu ions. The novel technology based on the combination of foam separation and biosorption serves as an effective approach for the removal of Cu ions from industrial wastewater.

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Foam fractionation for promoting rhamnolipids production by Pseudomonas aeruginosa D1 using animal fat hydrolysate as carbon source and its application in intensifying phytoremediation

Cited by 16 publications

References 44 publications

Rhamnolipids enhance growth performance by improving the immunity, intestinal barrier function, and metabolome composition in broilers

Rhamnolipids enhance growth performance by improving the immunity, intestinal barrier function, and metabolome composition in broilers

Foam fractionation methods in aerobic fermentation processes

Removal of Cu Ions in Wastewater through a Combined Foam Separation‐Cell Adsorption Approach

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