Magnetic Nanoparticles to Unique DNA Tracers – Effect of Functionalization on Physico-Chemical Properties.

Sharma, Anuvansh; Foppen, Jan Willem; Banerjee, Abhishek; Slimani, Sawssen; Bachhar, Nirmalya; Peddis, Davide; Bandyopadhyay, Sulalit

doi:10.21203/rs.3.rs-84463/v1

Cited by 3 publications

(4 citation statements)

References 46 publications

(71 reference statements)

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“…Figure 2 show the size distribution of iron oxide NPs measured using STEM images. It can be seen in the figure that due to the absence of a stabilizing agent, particles formed have broad size distribution [41]. The average size of NPs formed by this method is 11 ± 2 nm.…”

Section: Size Distribution Of Iron Oxide and Fe-xg Npsmentioning

confidence: 90%

Effect of Iron Oxide Nanoparticles on the Properties of Water-Based Drilling Fluids

et al. 2020

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In recent years, several studies have indicated the impact of nanoparticles (NPs) on various properties (such as viscosity and fluid loss) of conventional drilling fluids. Our previous study with commercial iron oxide NPs indicated the potential of using NPs to improve the properties of a laboratory bentonite-based drilling fluid without barite. In the present work, iron oxide NPs have been synthesized using the co-precipitation method. The effect of these hydrophilic NPs has been evaluated in bentonite and KCl-based drilling fluids. Rheological properties at different temperatures, viscoelastic properties, lubricity, and filtrate loss were measured to study the effect of NPs on the base fluid. Also, elemental analysis of the filtrate and microscale analysis of the filter cake was performed. Results for bentonite-based fluid showed that 0.019 wt% (0.1 g) of NPs reduced the coefficient of friction by 47%, and 0.0095 wt% (0.05 g) of NPs reduced the fluid loss by 20%. Moreover, for KCl-based fluids, 0.019 wt% (0.1 g) of additive reduced the coefficient of friction by 45%, while higher concentration of 0.038 wt% (0.2 g) of NPs shows 14% reduction in the filtrate loss. Microscale analysis shows that presence of NPs in the cake structure produces a more compact and less porous structure. This study indicates that very small concentration of NPs can provide better performance for the drilling fluids. Additionally, results from this work indicate the ability of NPs to fine-tune the properties of drilling fluids.

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Section: Size Distribution Of Iron Oxide and Fe-xg Npsmentioning

confidence: 90%

Effect of Iron Oxide Nanoparticles on the Properties of Water-Based Drilling Fluids

et al. 2020

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“…The synthesis of SiDNAFe MPs was described in Sharma et al (2021). Briefly, synthetic double‐stranded DNA (dsDNA) was firstly bound with positively charged iron oxide nanoparticles (IONPs), thereafter, these DNA‐tagged IONPs were encapsulated within a silica shell.…”

Section: Methodsmentioning

confidence: 99%

“…Compared with traditional solute/particulate tracers, such as fluorescent dyes/microspheres, DNA‐tagged tracers enable true multi‐tracing with their engineered identical surface properties but unique synthetic DNA signatures, allowing a theoretically unlimited number of distinguishable tracer varieties without environmental interference. Later, superparamagnetic DNA‐tagged silica microparticles (SiDNAFe MPs) were designed with a magnetite core in order to facilitate easy harvesting and up‐concentration from larger volumes of sample water (Puddu et al, 2014; Sharma et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Settling of superparamagnetic silica encapsulated DNA microparticles in river water

Tang

Zhang

Bogaard

et al. 2023

Hydrological Processes

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Particle tracers are sometimes used to track sources and sinks of riverine particulate and contaminant transport. A potentially new particle tracer is $200 nm sized superparamagnetic silica encapsulated DNA (SiDNAFe). The main objective of this research was to understand and quantify the settling and aggregation behaviour of SiDNAFe in river waters based on laboratory settling experiments. Our results indicated, that in quiescent conditions, more than 60% of SiDNAFe settled within 30 h, starting with a rapid settling phase followed by an exponential-like slow settling phase in the three river waters we used (Meuse, Merkske, and Strijbeek) plus MilliQ water. In suspensions of 1000Â higher particle concentrations, the hydrodynamic diameter (D h-DLS ) of SiDNAFe increased over time, with its polydispersity index (PDI) positively correlated with particle size. From these observations, we inferred that the rapid SiDNAFe settling was mainly due to homo-aggregation and not due to heteroaggregation (e.g., with particulate matter present in river water). Incorporating a firstorder mass loss term which mimics the exponential phase of the settling in quiescent conditions seems to be an adequate step forward when modelling the transport of SiDNAFe in river injection experiments. Furthermore, we validated the applicability of magnetic separation and up-concentration of SiDNAFe in real river waters, which is an important advantage for carrying out field-scale SiDNAFe tracing experiments.

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“…These sprays are carried out intermittently with an interval of 3–4 days during the drying of grapes on the rack. This is an Australian method also commonly followed by Indian raisin processors (Sharma, Banerjee, & Adsule, 2014).…”

Section: Pretreatment Of Grapementioning

confidence: 99%

Novel alternative pretreatment approaches for production of quality raisins from grapes: Opportunities and future prospects

Pawar

Giri

Sharma

2023

J Food Process Engineering

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Raisins are high-value products obtained by drying grape berries. Natural drying of grapes is difficult because a hydrophobic waxy cuticle is present on the berry surface.Pretreatment is an important operation in raisin production in which the waxy layer is dissolved or removed for enhancing the drying rate of grapes. Chemical pretreatment consisting of dipping grape bunches in a solution of alkali and oil emulsion is commonly followed for raisin production. However, the threat of chemicals to human health, the environment, and longer processing time lead to the development of an alternative to chemical pretreatment. Various alternative methods have been explored including the abrasive pretreatment and some novel thermal and nonthermal techniques. The potential of these alternative pretreatments has been discussed in this review along with a critical analysis of literature on grape drying. The fundamentals of grape drying and unit operations of the chemical and abrasive process of raisin production have also been narrated. An abrasive process as the best alternative to chemicals in raisin production has been described in detail along with future prospects of different physical pretreatments. This review provides comprehensive information on raisin production with a focus on chemical-free processing of grape for raisin production. Practical applicationsRaisins are dried grapes rich in nutritional and functional ingredients that are beneficial for human health. A predrying treatment to remove or to dissolve the waxy layer from surface of grapes is an important operation in raisin production. The chemical method of pretreatment is prevalent among raisin processors. However, a chemical method has some limitations like longer processing time, intense use of chemicals, food safety issues, and so forth. Many novel pretreatments like superficial abrasion, thermal, and nonthermal techniques have been explored by researchers and it has the potential to produce safe raisins without use of any chemicals. These alternative techniques can be adopted for industrial-scale processing of raisins. A lot of literature is available on the grape drying process, modeling, and quality aspects of raisins. All this information has been summarized in this comprehensive review with a comparison of unit operations, analysis of findings, and future aspects for the production of safe raisins. This review will be very useful for industrial-scale processing of raisins adopting novel processes and it will also provide in-depth knowledge to the academician and research scholars.

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Magnetic Nanoparticles to Unique DNA Tracers – Effect of Functionalization on Physico-Chemical Properties.

Cited by 3 publications

References 46 publications

Effect of Iron Oxide Nanoparticles on the Properties of Water-Based Drilling Fluids

Effect of Iron Oxide Nanoparticles on the Properties of Water-Based Drilling Fluids

Settling of superparamagnetic silica encapsulated DNA microparticles in river water

Novel alternative pretreatment approaches for production of quality raisins from grapes: Opportunities and future prospects

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