Construction of a Cordyceps sinensis exopolysaccharide-conjugated selenium nanoparticles and enhancement of their antioxidant activities

Xiao, Yidong; Huang, Qilin; Zheng, Zhaomin; Guan, Huijie; Liu, Shiyu

doi:10.1016/j.ijbiomac.2017.03.016

Cited by 127 publications

(57 citation statements)

References 49 publications

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“…The antioxidant capacity of CBSE and synthesized SeNPs with time also was evaluated by using the 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and ferric reducing antioxidant power (FRAP) spectrophotometric methods. According to previous reports, SeNPs exhibit excellent free radical scavenging capacities and antioxidant activities [72,73]. FRAP and ABTS values of 12.4 ± 0.2 and 28.6 ± 0.1 mg TE/g, respectively, were obtained for CBSE, highlighting the antioxidant activity of this natural extract.…”

Section: Resultssupporting

confidence: 71%

Microwave-Assisted Green Synthesis and Antioxidant Activity of Selenium Nanoparticles Using Theobroma cacao L. Bean Shell Extract

2019

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Selenium nanoparticles (SeNPs) are successfully synthesized through microwave heating by using Theobroma cacao L. bean shell extract as a stabilizing and capping agent. Response surface methodology is used to obtain optimal synthesis conditions. The effect of microwave power, irradiation time and amount of Na2SeO3 are evaluated on crystalline size by X-Ray Diffraction (XRD) and Z-potential by Dynamic Light Scattering (DLS) using a central composite design (CCD). Optimal synthesis conditions are determined as 15.6 min, 788.6 W and 0.14 g of sodium selenite using 50 mL of Theobroma cacao L. bean shell extract. The successful biosynthesis of SeNPs is confirmed by UV-visible and Fourier Transformed Infrared (FTIR) spectroscopic analyses. The XRD pattern and Raman spectra show the presence of trigonal and amorphous synthesized SeNPs. Spherical SeNPs are observed by Transmission Electron Microscopy (TEM) with a particle size of 1–3 nm in diameter, at least one order of magnitude lower than those previously reported. The obtained SeNPs can be stable up to 55 days at 4 °C. Additionally, the SeNPs show an excellent antioxidant performance by the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and ferric reducing antioxidant power (FRAP) methods, with potential application in different sectors, such as food, medical and pharmaceutical.

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Section: Resultssupporting

confidence: 71%

Microwave-Assisted Green Synthesis and Antioxidant Activity of Selenium Nanoparticles Using Theobroma cacao L. Bean Shell Extract

2019

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“…This test is used to measure antioxidant capacity. It has been shown that Se NPs have the ability to eliminate ABTS radicals [45]. Other NPs based on cerium and titanium have shown the ability to eliminate free radicals in plants [46,47].…”

Section: Discussionmentioning

confidence: 99%

Impact of Selenium and Copper Nanoparticles on Yield, Antioxidant System, and Fruit Quality of Tomato Plants

Hernández-Hernández

Quiterio-Gutiérrez

Cadenas‐Pliego³

et al. 2019

Plants

125

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The effects of nanoparticles (NPs) on plants are contrasting; these depend on the model plant, the synthesis of the nanoparticles (concentration, size, shape), and the forms of application (foliar, substrate, seeds). For this reason, the objective of this study was to report the impact of different concentrations of selenium (Se) and copper (Cu) NPs on yield, antioxidant capacity, and quality of tomato fruit. The different concentrations of Se and Cu NPs were applied to the substrate every 15 days (five applications). The yield was determined until day 102 after the transplant. Non-enzymatic and enzymatic antioxidant compounds were determined in the leaves and fruits as well as the fruit quality at harvest. The results indicate that tomato yield was increased by up to 21% with 10 mg L−1 of Se NPs. In leaves, Se and Cu NPs increased the content of chlorophyll, vitamin C, glutathione, 2,2′-azino-bis(3-ethylbenzthiazolin-6-sulfonic acid (ABTS), superoxide dismutase (SOD), glutathione peroxidase (GPX) and phenylalanine ammonia liasa (PAL). In fruits, they increased vitamin C, glutathione, flavonoids, firmness, total soluble solids, and titratable acidity. The combination of Se and Cu NPs at optimal concentrations could be a good alternative to improve tomato yield and quality, but more studies are needed to elucidate their effects more clearly.

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“…The major element peaks of C, O, and N were all observed in the EDS spectra. Meanwhile in EDS spectra for Se‐MPH, apart from C, O, and N, an additional strong peak of Se atom appeared at 1.37 keV, which is assigned to the surface plasmon resonance (Xiao, Huang, Zheng, Guan, & Liu, ), confirming that Se‐MPH was successfully synthesized.…”

Section: Resultsmentioning

confidence: 75%

Improvement of Biological Activity of Morchella esculenta Protein Hydrolysate by Microwave‐Assisted Selenization

Zhang

Wang

et al. 2018

Journal of Food Science

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Morchella esculenta protein hydrolysate (MPH) from a valued medicinal and edible fungus M. esculenta (L.) is an excellent material for functional food development. To promote MPH utilization, selenization of MPH was performed by applying a simple and environmentally friendly microwave irradiation procedure. The physicochemical characteristics of selenized MPH (Se‐MPH) were investigated by SEM‐EDX, FTIR, CD, and amino acid analyzer, and its biological activity were assessed by ABTS, DPPH, H2O2 scavenging, and reducing power assays, as well as α‐glucosidase, α‐amylase, and tyrosinase inhibition tests. The results showed that MPH was successfully selenized, Se content in Se‐MPH reached 59.0 ± 0.64 mg/g, and amino groups, hydroxyl groups, and sulfur atoms of methionine residues in the MPH molecule may participate in selenization. Furthermore, Se‐MPH exhibited significantly enhanced antioxidant, antidiabetic, and tyrosinase inhibitory activities, compared with the native MPH and microwave‐irradiated MPH. Thus, the microwave‐assisted selenization is a feasible strategy for preparing organic Se and improving the biological activity of MPH. Practical Application In this study, selenized Morchella esculenta protein hydrolysate (Se‐MPH) was successfully prepared via conjugation with sodium selenite using the microwave‐assisted method. The results showed that Se‐MPH, synthesized with the aid of microwave, exhibited favorable selenium content and improved antioxidant, antidiabetic, and tyrosinase inhibitory activities. Therefore, microwave can be employed as an innovative and effective avenue for the production of organic selenium in nutraceutical and functional food industry.

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Construction of a Cordyceps sinensis exopolysaccharide-conjugated selenium nanoparticles and enhancement of their antioxidant activities

Cited by 127 publications

References 49 publications

Microwave-Assisted Green Synthesis and Antioxidant Activity of Selenium Nanoparticles Using Theobroma cacao L. Bean Shell Extract

Microwave-Assisted Green Synthesis and Antioxidant Activity of Selenium Nanoparticles Using Theobroma cacao L. Bean Shell Extract

Impact of Selenium and Copper Nanoparticles on Yield, Antioxidant System, and Fruit Quality of Tomato Plants

Improvement of Biological Activity of Morchella esculenta Protein Hydrolysate by Microwave‐Assisted Selenization

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