Application of Thermal Methods to Analyze the Properties of Coffee Silverskin and Oil Extracted from the Studied Roasting By-Product

Górska, Agata; Brzezińska, Rita; Wirkowska‐Wojdyła, Magdalena; Bryś, Joanna; Domian, Ewa; Ostrowska–Ligęza, Ewa

doi:10.3390/app10248790

Cited by 14 publications

(12 citation statements)

References 39 publications

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“…Following the incubation period, each well was given 5 μL of Resazurin dye (2mg/mL) to detect microbial proliferation by a pink coloration. [25]…”

Section: Examination Of Minimum Inhibitory Concentration (Mic)mentioning

confidence: 99%

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Chemical Composition, Bioactive Potential, and Thermal Behaviour of Cyperus scariosus Essential Oil

Jha¹,

Patel²,

Devkar³

et al. 2022

CSIJ

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Plant derived oils have recently been found to be more effective in pharmaceutical sectors than synthetic goods since these plants contain physiologically active chemicals with a wide range of therapeutic effects. Essential oil, also known as essence, volatile oil, etheric oil, or aetheroleum, is a complex mixture of volatile elements biosynthesised by living organisms, which is particularly abundant in aromatic plants. This research summarizes facts on the chemistry of essential oil isolated from Cyperus scariosus on the one hand and their most important biological activities on the other. The essential oil components were determined to be a complex mixture of volatile chemicals such as monoterpenes, sesquiterpene hydrocarbons, and their oxygenated derivatives using Gas Chromatography-Mass Spectrometry (GC-MS). Thermoanalytical techniques such as TGA and DSC were used to investigate the oil's stability. Infrared spectroscopy was used to provide further information on the existence of various functional groups. Furthermore, the extracted oil's antibacterial, antioxidant, and antimalarial activities were investigated. The antimalarial activity was tested against Plasmodium falciparum, and the antioxidant and free radical scavenging activity were calculated using the DPPH reagent. This comprehensive study will provide an overview of the chemicals extracted from Cyperus scariosus as well as the plant's convincing pharmacological qualities.

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“…Following the incubation period, each well was given 5 μL of Resazurin dye (2mg/mL) to detect microbial proliferation by a pink coloration. [25]…”

Section: Examination Of Minimum Inhibitory Concentration (Mic)mentioning

confidence: 99%

“…Differential scanning calorimetry (DSC) is one of the thermal techniques that can provide significant information about tested materials [25]. The information collected from DSC curves can be useful in understanding thermal transitions when the material is subjected to particular treatments [26,27].…”

Section: Dsc Analysismentioning

confidence: 99%

Chemical Composition, Bioactive Potential, and Thermal Behaviour of Cyperus scariosus Essential Oil

Jha¹,

Patel²,

Devkar³

et al. 2022

CSIJ

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“…3 depicts the TG curve, which shows the changes in the mass of the Pinus Succinefera essential oil while heating under oxygen till 500 °C as well as the fact that the weight loss happened mostly in two stages of decomposition. The essential oil demonstrated the first and second thermal degradation events, with T onset and T max of 225°C to 375°C and 400°C to 475°C, respectively, and the curve then stabilizes beyond this temperature, remaining with 0.46% residue after a total weight loss of 99.54%, which could be due to the presence of inorganic compounds with high stability [39]. This demonstrates that the chosen essential oil from has a higher temperature for mass loss, indicating its strong stability.…”

Section: Thermo-gravimetric Analysismentioning

confidence: 98%

Exploration of Chemical Composition and Unveiling the Phytopharmaceutical Potentials of Essential Oil from Fossilized Resin of Pinus succinefera

Jha¹,

Shaikh²,

Devkar³

et al. 2022

IRJPAC

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Background: Most of the plant natural flora contributes significantly to medicinal benefits. To address the shortcoming usage of synthetic drugs, natural products are in demand which offer a broad spectrum of activities with negligible side effects. Pinus succinefera is a fossilized resin from coniferous woods that belongs to the genus Pinus of the Pinaceae family and is widely known as Amber. The present study explores the physiochemical properties and broad spectrum of biological activities of the essential oil. Method: The essential oil obtained using the hydro-distillation process, and chemical composition was examined by Gas Chromatography-Mass Spectrometric analysis as well as the functional groups present in the essential oil were determined using Fourier Transform Infrared Spectrometry. Thermal characterisation was performed using the Thermo Gravimetric Analysis and Differential Scanning Calorimetry. The antimicrobial potential of the essential oil was evaluated against different microorganisms meanwhile antimalarial activity against Plasmodium falciparum was examined. The free radical scavenging capability of the essential oil was assessed using 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) reagent. High-performance thin-layer chromatography was used to examine the qualitative components of the essential oil. Results: The Gas Chromatography-Mass Spectrometric analysis profile indicated 5 major compounds in the essential oil, which consisted of 99% of the total oil. The thermal analysis of the essential oil established thermal stability. The essential oil showed moderate antioxidant and a moderate to significant potential was observed against microbial species including Plasmodium falciparum. In High-performance thin-layer chromatography five bands of essential oil components with Retention factor ranging from 0.2 to 0.7 at 254nm were represented. Conclusion: The results indicated that the essential oil obtained from Pinus succinefera has the potential to be used in the pharmaceutical industry to manufacture medicinal substances, as well as it can show a significant capability in other domains.

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“…The detector temperature was maintained at 250 • C. Nitrogen (flow rate of 1 mL/min) was applied as a carrier gas. Fatty acid was identified by a comparison of their retention times with those of standard ones, quantified as a percent of the total of the FAMES content [38].…”

Section: Lipids Analysis-relative Composition Of Fatty Acidsmentioning

confidence: 99%

Enhancing Red Yeast Biomass Yield and Lipid Biosynthesis by Using Waste Nitrogen Source by Glucose Fed-Batch at Low Temperature

et al. 2022

Self Cite

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This work reports the effect of simple feeding strategies and temperature to obtain high-cell-density cultures of Rhodotorula glutinis var. rubescens LOCKR13 maximizing the de novo lipid productivity using deproteinated potato wastewater (DPW) as a basic medium. Feeding DPW with glucose enables a high yield of Rhodotorula glutinis var. rubescens LOCKR13 biomass (52 g d.w. L−1) to be obtained. The highest values of lipid accumulation (34.15%, w/w), production (14.68 g L−1) and yield coefficients (YL/S: 0.242 g g−1), and volumetric productivity (PL: 0.1 g L−1 h−1) were reached by the strain in the two-stage fed-batch process at 20 °C. The lipid of yeast biomass was rich in oleic acid (Δ9C18:1) and palmitic acid (C16:0), and the lower temperature of incubation significantly increased the MUFA (especially oleic acid) content. For the first time, a unique set of thermal analyses of the microbial oil was performed. The isotherms of the oxidation kinetics (PDSC) showed that lipids extracted from the biomass of red yeast had high oxidative stability. This feature of the yeast oil can be useful for long-shelf-life food products and can be promising for the production of biodiesel.

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Application of Thermal Methods to Analyze the Properties of Coffee Silverskin and Oil Extracted from the Studied Roasting By-Product

Cited by 14 publications

References 39 publications

Chemical Composition, Bioactive Potential, and Thermal Behaviour of Cyperus scariosus Essential Oil

Chemical Composition, Bioactive Potential, and Thermal Behaviour of Cyperus scariosus Essential Oil

Exploration of Chemical Composition and Unveiling the Phytopharmaceutical Potentials of Essential Oil from Fossilized Resin of Pinus succinefera

Enhancing Red Yeast Biomass Yield and Lipid Biosynthesis by Using Waste Nitrogen Source by Glucose Fed-Batch at Low Temperature

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