Synthesis, stabilisation and characterisation of rhamnolipid-capped ZnS nanoparticles in aqueous medium

Narayanan, Jayanthi; Ramji, R.; Sahu, H. K.; Pennathur, Gautam

doi:10.1049/iet-nbt.2009.0010

Cited by 45 publications

(22 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Applications of sophorolipids in various industries such as pharmaceutical, medical, cosmetics, environmental, and detergent industries have been reported [5]. The use of rhamnolipid biosurfactant derived from Pseudomonas aeruginosa has been reported as a biostabilizer during the synthesis of ZnS nanoparticles [11]. Synthesis of zinc oxide nanoparticles using sophorolipid as biostabilizer has not been reported so far.…”

Section: Introductionmentioning

confidence: 99%

Dual Role of Acidic Diacetate Sophorolipid as Biostabilizer for ZnO Nanoparticle Synthesis and Biofunctionalizing Agent Against Salmonella enterica and Candida albicans

Basak¹,

Das²,

Das³

2014

Journal of Microbiology and Biotechnology

View full text Add to dashboard Cite

In the present study, a yeast species isolated from CETP, Vellore, Tamilnadu was identified as Cryptococcus sp. VITGBN2 based on molecular techniques and was found to be a potent producer of acidic diacetate sophorolipid in mineral salt media containing vegetable oil as additional carbon source. The chemical structure of the purified biosurfactant was identified as acidic diacetate sophorolipid through GC-MS analysis. This sophorolipid was used as a stabilizer for synthesis of zinc oxide nanoparticles (ZON). The formation of biofunctionalized ZON was characterized using UV-visible spectroscopy, XRD, scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy. The antimicrobial activities of naked ZON and sophorolipid functionalized ZON were tested based on the diameter of inhibition zone in agar well diffusion assay, microbial growth rate determination, protein leakage analysis, and lactate dehydrogenase assay. Bacterial pathogen Salmonella enterica and fungal pathogen Candida albicans showed more sensitivity to sophorolipid biofunctionalized ZON compared with naked ZON. Among the two pathogens, S. enterica showed higher sensitivity towards sophorolipid biofunctionalized ZON. SEM analysis showed that cell damage occurred through cell elongation in the case of S. enterica, whereas cell rupture was found to occur predominantly in the case of C. albicans. This is the first report on the dual role of yeastmediated sophorolipid used as a biostabilizer for ZON synthesis as well as a novel functionalizing agent showing antimicrobial property.

show abstract

Section: Introductionmentioning

confidence: 99%

Dual Role of Acidic Diacetate Sophorolipid as Biostabilizer for ZnO Nanoparticle Synthesis and Biofunctionalizing Agent Against Salmonella enterica and Candida albicans

Basak¹,

Das²,

Das³

2014

Journal of Microbiology and Biotechnology

View full text Add to dashboard Cite

show abstract

“…Biosurfactants nowadays are commonly used as green chemicals or capping agents for the synthesis of nanoparticles (Ganesh et al 2010 ;Xie et al 2006 ;Palanisamy 2008 ;Narayanan et al 2010 ;Kumar et al 2011;Płaza et al 2006 ;Reddy et al 2009 ;Kiran et al 2010a , b ). Production of biosurfactant-mediated silver nanoparticles was reported with rhamnolipids of Pseudomonas aeruginosa (Ganesh et al 2010 ).…”

Section: Lactobacillus Paracaseimentioning

confidence: 99%

“…The silver nano particles were produced using NaBH 4 in Pseudomonas aeruginosa -derived rhamnolipid reverse micelles. Rhamnolipids derived from Pseudomonas aeruginosa were also used to synthesize ZnS nanoparticles as a capping agent and emphasized the metal affi nity and optical activities of the synthesized rhamnolipid -capped ZnS nanoparticles (Narayanan et al 2010 ). NiO nano rods were synthesized and stabilized using rhamnolipid microemulsion in heptane (Palanisamy et al 2008).…”

Section: Lactobacillus Paracaseimentioning

confidence: 99%

Biosurfactants in Food

Sharma¹

2016

SpringerBriefs in Food, Health, and Nutrition

View full text Add to dashboard Cite

Briefs in Food, Health, and Nutrition present concise summaries of cutting edge research and practical applications across a wide range of topics related to the fi eld of food science, including its impact and relationship to health and nutrition. Subjects include:• Food chemistry, including analytical methods; ingredient functionality; physicchemical aspects; thermodynamics • Food microbiology, including food safety; fermentation; foodborne pathogens; detection methods • Food process engineering, including unit operations; mass transfer; heating, chilling and freezing; thermal and non-thermal processing, new technologies • Food physics, including material science; rheology, chewing/mastication • Food policy • And applications to:-Sensory science -Packaging -Food quality -Product developmentWe are especially interested in how these areas impact or are related to health and nutrition.Featuring compact volumes of 50 to 125 pages, the series covers a range of content from professional to academic. Typical topics might include:• A timely report of state-of-the art analytical techniques • A bridge between new research results, as published in journal articles, and acontextual literature review • A snapshot of a hot or emerging topic • An in-depth case study • A presentation of core concepts that students must understand in order to make independent contributionsMore information about this series at

show abstract

“…126,127 Narayanan et al 126 demonstrated a novel method for the synthesis of ZnS nanoparticles in aqueous medium and showed that RL biosurfactant has potential as an effective capping agent for the synthesis of uniform nanoparticles. Hazra et al 127 reported a facile eco-friendly procedure for biosynthesis of RL capped ZnS nanoparticles, their structural characterization, biocompatibility, cytotoxicity assessment and their applicability as a nanophotocatalyst for the degradation of a textile azo dye.…”

Section: Synthesis Of Nanoparticlesmentioning

confidence: 99%

Rhamnolipid biosurfactant from Pseudomonas aeruginosa: From discovery to application in contemporary technology

2015

View full text Add to dashboard Cite

The rhamnolipids will most likely be the next generation of biosurfactants to reach the market. They should follow closely after alkyl polyglycosides, already established in the biosurfactants market, and sophorolipids, which can be found in several cleaning agents. However, the greatest numbers of recent publications and patents among glycolipid biosurfactants have been dedicated to rhamnolipids. Produced mainly by Pseudomonas aeruginosa, rhamnolipids are mixtures of different rhamnolipid congeners, which show physico-chemical properties that differ from those of single congeners, with the most abundant structure in the mixture having the largest impact on the overall characteristics of the total mixture. Characteristics of biodegradability, low toxicity, production from renewable sources and antimicrobial (particularly antifungal) activity together make rhamnolipid biosurfactants particularly promising for broad commercial application. Although to date, bioremediation has been the major topic filed for patents utilizing rhamnolipids, the increasing number of patents for applications in cosmetics, agronomy and food industries, formulation of cleaners and nanotechnology indicates their future implementation in these fields.

show abstract

Synthesis, stabilisation and characterisation of rhamnolipid-capped ZnS nanoparticles in aqueous medium

Cited by 45 publications

References 11 publications

Dual Role of Acidic Diacetate Sophorolipid as Biostabilizer for ZnO Nanoparticle Synthesis and Biofunctionalizing Agent Against Salmonella enterica and Candida albicans

Dual Role of Acidic Diacetate Sophorolipid as Biostabilizer for ZnO Nanoparticle Synthesis and Biofunctionalizing Agent Against Salmonella enterica and Candida albicans

Biosurfactants in Food

Rhamnolipid biosurfactant from Pseudomonas aeruginosa: From discovery to application in contemporary technology

Contact Info

Product

Resources

About