Spectroscopic Investigation of the Impact of Cold Plasma Treatment at Atmospheric Pressure on Sucrose and Glucose

Hauswirth, Anna; Kohler, Robert Ε.; Bosch, Lars ten; Avramidis, Georg; Gerhard, Christoph

doi:10.3390/foods11182786

Cited by 7 publications

(3 citation statements)

References 42 publications

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“…Applications of low-temperature plasma, blue light, and red light inhibited water loss and reduced rot of the navel orange. Further studies are necessary to determine how to use low-temperature plasma to control pathogens in a short treatment time and reduce the potential unwanted effects on peel composition [ 38 ], answer the question of why red and blue light inhibit these physiological activities, and determine how the interaction of different storage stages and temperatures affect the metabolism of TSS and TA of navel orange fruit during storage. The relationship between metabolism and water loss should also be emphasized.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Storage Temperature, Light Illumination, and Low-Temperature Plasma on Fruit Rot and Change in Quality of Postharvest Gannan Navel Oranges

Sun

et al. 2022

Foods

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Gannan navel orange (Citrus sinensis Osbeck cv. Newhall) is an economically important fruit, but postharvest loss occurs easily during storage. In this study, the effects of different temperatures, light illuminations, and low-temperature plasma treatments on the water loss and quality of the Gannan navel orange were investigated. The fruit began to rot after 90 d of storage at 5 °C and 20–45 d at 26 °C. Navel oranges stored at 26 °C had 7.2-fold and 3.1-fold higher rates of water loss at the early and late storage stages, respectively, as compared with those stored at 5 °C. Storage at 5 °C decreased the contents of total soluble solids at the early storage stage and the contents of titratable acids at the late storage stage, whereas storage at 26 °C decreased the contents of total soluble solids at the late storage stage and the contents of titratable acids at the early storage stage, respectively. Application of low-temperature plasma produced by air ionization for 6 min, or continuous blue or red light illumination significantly inhibited water loss within 7 and 21 d of storage at 22 °C, respectively, but exhibited no significant effect on fruit quality. Furthermore, the low-temperature plasma treatment protected against fruit rot. Thus, treatment with low-temperature plasma followed by storage at a low temperature under continuous red or blue light illumination was of potential value as a green technology for preserving Gannan navel orange during storage.

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Section: Discussionmentioning

confidence: 99%

The Effects of Storage Temperature, Light Illumination, and Low-Temperature Plasma on Fruit Rot and Change in Quality of Postharvest Gannan Navel Oranges

Sun

et al. 2022

Foods

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“…Sucrose as carbon precursor also mainly consisted of carbon and oxygen, each at 30.88% and 69.12%. In figure 5(c), sucrose exhibits lowest non-oxygenated C 1s intensity the sp 2 (peak centred at 284.5 eV) caused by atmospheric contamination of the sugar at C-C bonds [29]. After reduction by DHA, the sp 2 becomes more prominent which is a sign of extended carbon backbone formation.…”

Section: Chemical Reduction Degree Of Rgo/aunps By Xpsmentioning

confidence: 96%

Comparison study between two different precursors of RGO/AuNPs one pot synthesis

Kasim,

Halim,

Ong

et al. 2024

Adv. Nat. Sci: Nanosci. Nanotechnol.

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One pot synthesis of graphene nanocomposites is low-cost and time-efficient methodology to be considered for large scale device fabrication. Graphene precursors made of renewable and waste materials such as rice husk, oil palm kernel and sugar are explored upon rising concern of expensiveness and hazard in conventional approaches. This paper presents chemical characterisation study of one pot reduced graphene oxide/gold nanoparticles (RGO/AuNPs) synthesised from low-cost sucrose as precursor and dehydroascorbic acid as green reducing agent at ambient condition which was originally used by Hurtado et al in 2020. Raman spectrum of RGO/AuNPs was compared to composite of commercial GO precursor to evaluate quality of reduction products. Result from UV–vis spectroscopy, Fourier-transform infrared spectroscopy (FTIR) and x-ray photoelectron spectroscopy (XPS) showed that both techniques successfully eliminated oxygen-containing functional groups to form graphene constitution. Asides from lower stability, AuNPs in sucrose-derived RGO possessed larger size and was more dispersed than those of GO-derived RGO, implying the need to optimise the current recipe. Reduction mechanism of both precursors was proposed for better understanding. The aim of this work is to show feasibility of green graphene nanocomposite synthesis that could empower productivity of electronic, optical and optoelectronics applications.

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“…The sucrose levels remained relatively unchanged following plasma treatment, suggesting its stability. Sucrose is a non-reducing sugar and lacks functional groups susceptible to plasma-induced chemical reactions [23,24]. Therefore, it is unsurprising that plasma treatment did not significantly affect the sucrose levels in the GCBE.…”

Section: Changes In Gcbe Compositionmentioning

confidence: 99%

Enhancing Bioactivity and Conjugation in Green Coffee Bean (Coffea arabica) Extract through Cold Plasma Treatment: Insights into Antioxidant Activity and Phenolic–Protein Conjugates

Kungsuwan,

Sawangrat,

Ounjaijean

et al. 2023

Molecules

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Cold plasma technology is gaining attention as a promising approach to enhancing the bioactivity of plant extracts. However, its impact on green coffee bean extracts (GCBEs) still needs to be explored. In this study, an innovative underwater plasma jet system was employed to investigate the effects of cold plasma on Coffea arabica GCBEs, focusing on the conjugation reflected by the change in composition and bioactivity. The DPPH radical scavenging antioxidant activity exhibited a gradual increase with plasma treatment up to 35 min, followed by a decline. Remarkably, at 35 min, the plasma treatment resulted in a significant 66% increase in the DPPH radical scavenging activity of the GCBE. The total phenolic compound content also displayed a similar increasing trend to the DPPH radical scavenging activity. However, the phenolic profile analysis indicated a significant decrease in chlorogenic acids and caffeine. Furthermore, the chemical composition analysis revealed a decrease in free amino acids, while sucrose remained unchanged. Additionally, the SDS-PAGE results suggested a slight increase in protein size. The observed enhancement in antioxidant activity, despite the reduction in the two major antioxidants in the GCBE, along with the increase in protein size, might suggest the occurrence of conjugation processes induced by plasma, particularly involving proteins and phenolic compounds. Notably, the plasma treatment exhibited no adverse effects on the extract’s safety, as confirmed by the MTT assay. These findings indicate that cold plasma treatment holds significant promise in improving the functional properties of GCBE while ensuring its safety. Incorporating cold plasma technology into the processing of natural extracts may offer exciting opportunities for developing novel and potent antioxidant-rich products.

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Spectroscopic Investigation of the Impact of Cold Plasma Treatment at Atmospheric Pressure on Sucrose and Glucose

Cited by 7 publications

References 42 publications

The Effects of Storage Temperature, Light Illumination, and Low-Temperature Plasma on Fruit Rot and Change in Quality of Postharvest Gannan Navel Oranges

The Effects of Storage Temperature, Light Illumination, and Low-Temperature Plasma on Fruit Rot and Change in Quality of Postharvest Gannan Navel Oranges

Comparison study between two different precursors of RGO/AuNPs one pot synthesis

Enhancing Bioactivity and Conjugation in Green Coffee Bean (Coffea arabica) Extract through Cold Plasma Treatment: Insights into Antioxidant Activity and Phenolic–Protein Conjugates

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