Valorization of waste-cooking oil into sophorolipids and application of their methyl hydroxyl branched fatty acid derivatives to produce engineering bioplastics

Kim, Jeong-Hun; Oh, Yuri; Hwang, Juyoung; Kang, Jun; Kim, Hyeri; Jang, Young-Ah; Lee, Seungsoo; Hwang, Sung Yeon; Park, Jeyoung; Eom, Gyeong Tae

doi:10.1016/j.wasman.2021.02.003

Cited by 38 publications

(22 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3). According to retention times (RT), the purified SLs contain a mixture of acidic and lactonic forms after comparing with the acidic SL non-acetylated and lactonic di-acetylated standards, consistent with the results confirmed by Kim et al [25]. In agreement with the previous work by Kurtzman et al [6], S. riodocensis produced structural diversity of SLs, including free acid forms of the monoacetylated and non-acetylated SLs with some lactonic forms.…”

Section: Discussionsupporting

confidence: 90%

“…We suggested that they were derivative of SLs. Kim et al [ 25 ] also reported the HPLC analysis of SLs derived from rapeseed and waste-cooking oils and identified the area peaks of acidic and lactonic SLs at RT of 32.5–42.5 and 42.5–52, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The mobile phase was a linear gradient of 20% acetonitrile in H 2 O for 15 min, followed by 20–80% acetonitrile for 25 min, and then 80–100% acetonitrile for 10 min. The final mobile phase was 100% acetonitrile for 20 min at a flow rate of 0.5 ml/min [ 25 ].…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Production of new antimicrobial palm oil-derived sophorolipids by the yeast Starmerella riodocensis sp. nov. against Candida albicans hyphal and biofilm formation

et al. 2022

View full text Add to dashboard Cite

Background Microbial derived-surfactants display low eco-toxicity, diverse functionality, high biodegradability, high specificity, and stability under extreme conditions. Sophorolipids are emerging as key biosurfactants of yeast origins, used in various industrial sectors to lower surface tension. Recently, sophorolipid complexes have been applied in biomedicals and agriculture to eradicate infectious problems related to human and plant fungal pathogens. This study aimed to characterize the functional properties and antifungal activities of sophorolipids produced by a newly characterized Starmerella riodocensis GT-SL1R sp. nov. strain. Results Starmerella riodocensis GT-SL1R sp. nov. strain was belonged to Starmerella clade with 93.12% sequence similarity using the ITS technique for strain identification. Sophorolipids production was examined, using co-carbon substrates glucose and palm oil, with a yield on the substrate between 30 and 46%. Using shake-flasks, the S. riodocensis GT-SL1R strain produced biosurfactants with an emulsification activity of 54.59% against kerosene compared to the S. bombicola BCC5426 strain with an activity of 60.22%. Maximum productivities of GT-SL1R and the major sophorolipid-producer S. bombicola were similar at 0.8 gl−1 h−1. S. riodocensis GT-SL1R produced mixed forms of lactonic and acidic sophorolipids, shown by TCL, FTIR, and HPLC. Importantly, the complex sophorolipid mixture displayed antifungal activity against an opportunistic yeast pathogen Candida albicans by effectively reducing hyphal and biofilm formation. Conclusions Sophorolipids derived from S. riodocensis demonstrate potential industrial and biomedical applications as green surfactant and antifungal agent. Since numerous renewable bioresources and industrial wastes could be used by microbial cell factories in the biosynthesis of biosurfactants to reduce the production cost, sophorolipids hold a promising alternative to current antimicrobials in treatments against infectious diseases in humans, animals, and plants.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Production of new antimicrobial palm oil-derived sophorolipids by the yeast Starmerella riodocensis sp. nov. against Candida albicans hyphal and biofilm formation

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In the current development of novel surfactants, there is a growing trend of utilizing nontraditional naturally occurring branching hydrophobic chains [61][62][63]. Nonionic surfactants based on twin tail glycerol have been synthesized and they have good oil-in-water and water-in-oil emulsifying characteristics [64] structural analogs of glycerol-based surfactants have recently been created by employing heterogeneous interfacial acidic catalysts to directly etherify glycerol and dodecanol.…”

Section: Recent Progress In Randd and Industrial Productionmentioning

confidence: 99%

Perspective Chapter: Overview of Bio-Based Surfactant – Recent Development, Industrial Challenge, and Future Outlook

Ismail¹,

Shahruddin²,

Othman³

2022

Surfactants and Detergents - Updates and New Insights

View full text Add to dashboard Cite

Bio-based surfactants are surface-active compounds derived from oil and fats through the production of oleochemicals or from sugar. Various applications of bio-based surfactants include household detergents, personal care, agricultural chemicals, oilfield chemicals, industrial and institutional cleaning, and others. Due to the stringent environmental regulations imposed by governments around the world on the use of chemicals in detergents, as well as growing consumer awareness of environmental concerns, there has been a strong demand in the market for bio-based surfactants. Bio-based surfactants are recognized as a greener alternative to conventional petrochemical-based surfactants because of their biodegradability and low toxicity. As a result, more research is being done on producing novel biodegradable surfactants, either from renewable resources or through biological processes (bio-catalysis or fermentation). This chapter discusses the various types, feedstocks, and applications of bio-based surfactants, as well as the industrial state-of-the-art and market prospects for bio-based surfactant production. In addition, relevant technological challenges in this field are addressed, and a way forward is proposed.

show abstract

“…In order to determine the residual oil content in the fermentation medium, the residual oil in the culture medium was extracted and separated with n-hexane. The operation of this experiment adopted the method reported in a previous study [34]. We added 25 mL n-hexane to the serum bottle and mixed it vigorously for 5 min.…”

Section: Wco Consumptionmentioning

confidence: 99%

Conversion of Waste Cooking Oil to Rhamnolipid by a Newly Oleophylic Pseudomonas aeruginosa WO2

Shi

Teng

Liu

et al. 2022

IJERPH

View full text Add to dashboard Cite

The components of waste cooking oil (WCO) are complex and contain toxic substances, which are difficult to treat biologically. Pseudomonas aeruginosa WO2 was isolated from oily sludge by an anaerobic enrichment–aerobic screening method, which could efficiently utilize WCO and produce rhamnolipid. The effects of nutrients and culture conditions on bacterial growth and lipase activity were investigated to optimize the fermentation of WCO. The results showed that strain WO2 utilized 92.25% of WCO and produced 3.03 g/L of rhamnolipid at 120 h. Compared with inorganic sources, the organic nitrogen source stabilized the pH of fermentation medium, improved lipase activity (up to 19.98 U/mL), and promoted the utilization of WCO. Furthermore, the WO2 strain exhibited inferior utilization ability of the soluble starch contained in food waste, but superior salt stress up to 60 g/L. These unique characteristics demonstrate the potential of Pseudomonas aeruginosa WO2 for the utilization of high-salinity oily organic waste or wastewater.

show abstract

Valorization of waste-cooking oil into sophorolipids and application of their methyl hydroxyl branched fatty acid derivatives to produce engineering bioplastics

Cited by 38 publications

References 47 publications

Production of new antimicrobial palm oil-derived sophorolipids by the yeast Starmerella riodocensis sp. nov. against Candida albicans hyphal and biofilm formation

Production of new antimicrobial palm oil-derived sophorolipids by the yeast Starmerella riodocensis sp. nov. against Candida albicans hyphal and biofilm formation

Perspective Chapter: Overview of Bio-Based Surfactant – Recent Development, Industrial Challenge, and Future Outlook

Conversion of Waste Cooking Oil to Rhamnolipid by a Newly Oleophylic Pseudomonas aeruginosa WO2

Contact Info

Product

Resources

About