scholarly journals Supercritical Carbon Dioxide Extraction of Phenolic Compounds from Potato (Solanum tuberosum) Peels

2021 ◽  
Vol 11 (8) ◽  
pp. 3410
Author(s):  
Micael de Andrade Lima ◽  
Rafaela Andreou ◽  
Dimitris Charalampopoulos ◽  
Afroditi Chatzifragkou
Keyword(s):  
Phenolic Compounds ◽  
Flow Rate ◽  
Total Phenolic ◽  
Main Compound ◽  
Scavenging Capacity ◽  
Carbon Dioxide Extraction ◽  
Potato Peels ◽  
Final Response ◽  
Co2 Flow ◽  
Optimum Extraction

In the last three decades, greener technologies have been used, aiming at extracting phenolic compounds from vegetable matrices due to the inherent advantages compared to organic solvent-based methodologies. In this work, supercritical CO2 was investigated for recovering phenolic acids from potato peels. Following screening runs for assessing the significant extraction parameters, a Central Composite Design of Experiments was carried out aiming at process optimization, with methanol concentration (MeOH, %) and CO2 flow rate (qCO2, g/min) as independent variables. Both parameters were deemed to impart a significant effect on the final response. Although the major phenolic acid in potato peels is chlorogenic acid (CGA), the main compound extracted was caffeic acid (CFA), present at a concentration of 0.75 mg/g dry peel in the extracts. The optimum extraction conditions were 80 °C, 350 bar, MeOH 20%, and flow rate of 18.0 g/min, which enabled a total phenolic recovery of 37% and a CFA recovery of 82%. The antioxidant activity of the supercritical fluid extraction (SFE) extracts was also measured, with the highest scavenging capacity reaching 73%. The need for using mixtures of water and organic solvents as co-solvents in SFE to enable CGA recovery seems necessary, possibly due to its better dissolution in aqueous solutions than in pure solvents.

scholarly journals Influence of Cooking Methods on Onion Phenolic Compounds Bioaccessibility

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1023
Author(s):  
Alice Cattivelli ◽  
Angela Conte ◽  
Serena Martini ◽  
Davide Tagliazucchi
Keyword(s):  
Phenolic Compounds ◽  
In Vitro Digestion ◽  
Total Phenolic ◽  
Cooking Methods ◽  
Total Phenolic Compounds ◽  
Main Compound ◽  
Quercetin Derivatives ◽  
Mass Spectrometry Identification ◽  
The Impact

The impact of domestic cooking (baking, boiling, frying and grilling) and in vitro digestion on the stability and release of phenolic compounds from yellow-skinned (YSO) and red-skinned onions (RSO) have been evaluated. The mass spectrometry identification pointed out flavonols as the most representative phenolic class, led by quercetin-derivatives. RSO contained almost the double amount of phenolic compounds respect to YSO (50.12 and 27.42 mg/100 g, respectively). Baking, grilling and primarily frying resulted in an increased amount of total phenolic compounds, especially quercetin-derivatives, in both the onion varieties. Some treatments promoted the degradation of quercetin-3-O-hexoside-4′-O-hexoside, the main compound present in both the onion varieties, leading to the occurrence of quercetin-4′-O-hexoside and protocatechuic acid-4-O-hexoside. After in vitro digestion, the bioaccessibility index for total phenolic compounds ranged between 42.6% and 65.5% in grilled and baked YSO, respectively, and between 39.8% and 80.2% in boiled and baked RSO, respectively. Baking contributed to the highest amount of bioaccessible phenolic compounds for both the onion varieties after in vitro digestion. An in-depth design of the cooking process may be of paramount importance in modulating the gastro-intestinal release of onion phenolic compounds.

scholarly journals Free Radical-Scavenging Capacities, Phenolics and Capsaicinoids in Wild Piquin Chili (Capsicum annuum var. Glabriusculum)

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2655 ◽  
Author(s):  
Yolanda Moreno-Ramírez ◽  
Guillermo Martínez-Ávila ◽  
Víctor González-Hernández ◽  
Cecilia Castro-López ◽  
Jorge Torres-Castillo
Keyword(s):  
Free Radical ◽  
Phenolic Compounds ◽  
Radical Scavenging ◽  
Natural Populations ◽  
Free Radical Scavenging ◽  
Chemical Diversity ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity

The total phenolic compounds content, free radical-scavenging capacity and capsaicinoid content in populations of wild Piquin chili (C. annuum) were studied. Aqueous and hydroalcoholic extracts from nine ecotypes were evaluated. High contents of phenolic compounds and free radical-scavenging capacities were observed for both extracts; however, the values that were found for the hydroalcoholic phase were substantially higher. LC-MS analysis allowed for the detection of 32 compounds, where apigenin-8-C-glucoside followed by vanillic acid 1-O-β-o-glucopyranosylester (Isomer I or II) and 7-ethoxy-4-methylcoumarin were the most widely distributed; they were found in more than 89% of the ecotypes. The diversity of identified phenolic compounds was different among ecotypes, allowing them to be distinguished by chemical diversity, free radical-scavenging capacities and heat Scoville units. The total capsaicinoid content was higher in Population I (23.5 mg/g DW) than in Populations II and III, which had contents of 15.3 and 10.7 mg/g DW, respectively. This variability could lead to phytochemical exploitation and the conservation of the natural populations of wild chili.

scholarly journals A Characterization of Content, Composition and Scavenging Capacity of Phenolic Compounds in Parsnip Roots of Various Weight

2014 ◽  
Vol 9 (6) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Nada Č. Nikolić ◽  
Miodrag M. Lazić ◽  
Ivana T. Karabegović ◽  
Gordana S. Stojanović ◽  
Zoran B. Todorović
Keyword(s):  
Phenolic Compounds ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Root Weight ◽  
Dry Extract ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity ◽  
Dpph Scavenging ◽  
Root Size

The contents, composition and radical scavenging capacity of phenolic compounds from parsnips of various root weights grown in Serbia were examined. The content of phenolic compounds depended on root size, and the highest content was in the group where the samples with the lowest root size were grouped. The content of phenolic compounds varied from 109.7 to 125.3 μmol of chlorogenic acid per g dry extract, i.e.5470.8 to 6245.1 mg per kg fresh weight. Among the identified compounds were quercetin, kaempferol, apigenin and genkwanin glucosides and hydroxycinnamic and caffeoylshikimic acids. The highest antioxidant capacity was found for the group with the lowest root weight; the IC50 values ranged from 1.59 to 2.49 mg mL–1. There was positive correlation between the total phenolic content and scavenging capacity, and the kaempferol glucosides content could be an indicator of DPPH scavenging capacity of parsnip roots.

scholarly journals Evaluation of Direct Ultrasound-Assisted Extraction of Phenolic Compounds from Potato Peels

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1665
Author(s):  
Shusheng Wang ◽  
Amy Hui-Mei Lin ◽  
Qingyou Han ◽  
Qin Xu
Keyword(s):  
Phenolic Compounds ◽  
Agricultural Waste ◽  
The United States ◽  
Total Phenolic ◽  
Systematic Research ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Potato Peels ◽  
Ultrasound Assisted ◽  
The Impact

Potato peels (PPs) are generally considered as agriculture waste. The United States alone generates over one million tons of PPs a year. However, PPs contain valuable phenolic compounds with antioxidant activities. In this study, we evaluated the efficiency of ultrasound-assisted extraction techniques in recovering antioxidants from PPs. These techniques included a direct ultrasound-assisted extraction (DUAE), an indirect ultrasound-assisted extraction (IUAE), and a conventional shaking extraction (CSE). Results of this study showed that DUAE was more effective in extracting phenolic compounds than IUAE and CSE. We also evaluated the factors affecting the yield of total phenolic compounds (TPC) in DUAE, including the temperature, time, acoustic power, ratio of solvent to solids, and size of PPs particles. TPC yield of DUAE was higher, and the extraction rate was faster than IUAE and CSE. Furthermore, TPC yield was strongly correlated to the temperature of the mixture of PPs suspension. SEM images revealed that the irradiation of ultrasound energy from DUAE caused micro-fractures and the opening of PPs cells. The extract obtained from DUAE was found to have antioxidant activity comparable to commercial synthetic antioxidants. Results of this preliminary study suggest that DUAE has the potential to transform PPs from agricultural waste to a valuable ingredient. A future systematic research study is proposed to advance the knowledge of the impact of processing parameters in the kinetics of phenolic compounds extraction from potato peels using various extraction methods.

scholarly journals Kinetics of the Polyphenolic Content and Radical Scavenging Capacity in Olives through On-Tree Ripening

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Irene Gouvinhas ◽  
Raúl Domínguez-Perles ◽  
Amadeo Gironés-Vilaplana ◽  
Teresa Carvalho ◽  
Nelson Machado ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Abiotic Stresses ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Maturation Stage ◽  
Biotic And Abiotic Stresses ◽  
Phenolic Contents ◽  
Scavenging Capacity ◽  
Maturation Stages ◽  
Kinetics Of

Olive fruits, as well as their corresponding oil, represent an interesting source of phytochemicals, mainly phenolic compounds, which arise as secondary metabolites, resulting from the plant’s response to biotic and abiotic stresses. Therefore, olive fruits from three distinct cultivars (“Cobrançosa,” “Galega Vulgar,” and “Picual”) grown in Portugal and displaying different degree of resistance to biotic and abiotic stresses have been studied in relation to the concentration of total phenolic compounds, orthodiphenols and flavonoids, besides antioxidant capacity (DPPH, ABTS, FRAP, and ORACFL), in three maturation stages and two distinct harvest seasons (2012-2013). Generally, a decrease of all phenolic contents throughout the maturation stages has been observed, while, concerning cultivar, green olives of “Cobrançosa” showed the highest values for all contents assessed, denoting a strong influence of the genetic background. The same trend has not been observed regarding antioxidant activity, since Cobrançosa and Galega Vulgar cultivars presented the highest values only for the DPPH and ORACFL assays. Moreover, multivariate analyses pointed to the preponderance of the cultivars’ phenolic composition in the semiripe stage for the resistance to biotic stress, with “Galega” the most susceptible cultivar, presenting the lowest contents at this maturation stage, whereas “Picual” displayed the most pronounced phytochemical response.

scholarly journals Effect of spray drying conditions on antioxidants activity, flavonoids and total phenolic compounds of stevia rebaudiana

2018 ◽  
Author(s):  
Juan Rodríguez-Ramírez ◽  
Irene Chaparro-Hernández ◽  
Lilia L. Méndez-Lagunas ◽  
Luis Gerardo Barriada-Bernal
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Spray Drying ◽  
Air Temperature ◽  
Flow Rate ◽  
Total Flavonoid ◽  
Total Phenolic ◽  
Feed Flow Rate ◽  
Total Flavonoid Content ◽  
Flavonoid Content

In this work the spray drying of the fresh stevia leaves aqueous extract without encapsulating agents was carried out. The effect of the inlet air temperature (160-200 ºC) and the feed flow rate (2-3 kg/h) on the total phenolic content, the total flavonoid content and the antioxidant capacity were evaluated using Folin-Ciocalteau, aluminum chloride and DPPH methods respectively. The inlet air temperature had a significant effect on all parameters evaluated that showed a decrease when increasing the inlet air temperature, the feed flow rate had a significant effect on total flavonoids content and the antioxidant capacity, by increasing the feed flow rate the inhibition of the DPPH radical decreased and the total flavonoid content increased. The treatment at 160 ºC and 3 kg/h retained highest total flavonoid content and the antioxidant capacity. Keywords: Phenolic compounds, stevia, spray drying, antioxidant capacity

scholarly journals Supercritical Carbon Dioxide Extraction of Astaxanthin, Lutein, and Fatty Acids from Haematococcus pluvialis Microalgae

Marine Drugs ◽  
2018 ◽  
Vol 16 (9) ◽  
pp. 334 ◽  
Author(s):  
Giuseppe Sanzo ◽  
Sanjeet Mehariya ◽  
Maria Martino ◽  
Vincenzo Larocca ◽  
Patrizia Casella ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Fatty Acids ◽  
Supercritical Fluid ◽  
Flow Rate ◽  
Haematococcus Pluvialis ◽  
Supercritical Carbon Dioxide Extraction ◽  
Carbon Dioxide Extraction ◽  
Co2 Flow ◽  
Carbon Dioxide Co2 ◽  
Scale Reactor

Haematococcus pluvialis microalgae in the red phase can produce significant amounts of astaxanthin, lutein, and fatty acids (FAs), which are valuable antioxidants in nutraceutics and cosmetics. Extraction of astaxanthin, lutein, and FAs from disrupted biomass of the H. pluvialis red phase using carbon dioxide (CO2) in supercritical fluid extraction (SFE) conditions was investigated using a bench-scale reactor in a semi-batch configuration. In particular, the effect of extraction time (20, 40, 60, 80, and 120 min), CO2 flow rate (3.62 and 14.48 g/min) temperature (50, 65, and 80 °C), and pressure (100, 400, and 550 bar.) was explored. The results show the maximum recovery of astaxanthin and lutein achieved were 98.6% and 52.3%, respectively, at 50 °C and 550 bars, while the maximum recovery of FAs attained was 93.2% at 65 °C and 550 bars.

scholarly journals SUPERCRITICAL CARBON DIOXIDE EXTRACTION OF MANGO GINGER (CURCUMA MANGGA ROXB.): PROCESS OPTIMIZATION USING TAGUCHI METHOD

2019 ◽  
pp. 152-155
Author(s):  
RINALDI SALEA ◽  
ERWAN Y. DARUSSALAM ◽  
STEVANUS HIENDRAWAN ◽  
BAMBANG VERIANSYAH ◽  
RAYMOND R. TJANDRAWINATA
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Taguchi Method ◽  
Flow Rate ◽  
Extraction Time ◽  
Oil Yield ◽  
Dynamic Extraction ◽  
Co2 Flow ◽  
Optimum Extraction ◽  
Supercritical Carbon

Objective: Extraction of Curcuma mangga (C. mangga) using supercritical carbon dioxide (SC-CO2) was investigated to provide information about the optimum extraction condition. Methods: A Taguchi method with L9 orthogonal array design was used to determine the optimum extraction conditions. Effects of extraction pressure, temperature, CO2 flow rate and dynamic extraction time on C. mangga oil yield were investigated at levels ranging between 150-350 bar, 40-60 °C, 10-20 g/min and 120-240 min, respectively. Results: The highest C. mangga oil yield (5.223%) from SC-CO2 extraction was obtained at a pressure of 350 bar, temperature of 60 °C, CO2 flow rate of 20 g/min and dynamic extraction time of 240 min. The experimental C. mangga oil yield at optimum condition was in a good agreement with the values predicted by computational process using Taguchi method. Based on S/N ratio calculation, the most influencing parameters in maximizing C. mangga oil yield is extraction temperature, followed by extraction pressure, dynamic extraction time and CO2 flow rate. Conclusion: In this study, Taguchi method was successfully applied to optimize SC-CO2 extraction of C. mangga. Taguchi method was able to simplify the experimental procedure of SC-CO2 extraction.

scholarly journals Leafy Stems of Phagnalon saxatile subsp. saxatile from Algeria as a Source of Chlorogenic Acids and Flavonoids with Antioxidant Activity: Characterization and Quantification Using UPLC-DAD-ESI-MSn

2021 ◽  
Author(s):  
Farah Haddouchi ◽  
Tarik Mohammed Chaouche ◽  
Riadh Ksouri ◽  
Romain Larbat
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Methanolic Extract ◽  
Total Phenolic ◽  
Chlorogenic Acids ◽  
Synthetic Antioxidants ◽  
Polar Solvents ◽  
Caffeoylquinic Acids ◽  
Phytochemical Content ◽  
Scavenging Capacity

Phagnalon saxatile subsp. saxatile is a wild species very widespread in Algeria which is utilized for medicinal purposes as analgesic and anticholesterolemic. However, informations are still scarce regarding its phytochemical content. The objective of this study was to identify and quantify the phenolic compounds from different extracts of its leafy stems. For this purpose, the effects of four extracting solvents were investigated on the content of phenolic compounds and the antioxidant activity of this plant. Extracts prepared with polar solvents (methanol and water) contained higher amounts of phenolic compounds and showed better antioxidant activity than extracts with apolar solvents (hexane, dichloromethane). The methanolic extract, richest in total phenolic and total flavonoid, had significant antioxidant activity as regarded by DPPH° scavenging capacity (IC50 of 5.47 µg/mL), ABTS scavenging capacity (IC50 of 63.77 µg/mL) and inhibition of oxidation of linoleic acid (IC50 of 22.71 µg/mL), when compared to synthetic antioxidants. Chlorogenic acids and few flavonoids were identified and quantified by UPLC-DAD-MSn. The di-O-caffeoylquinic acids isomers were the most concentrated phenolics (25.4mg/g DW) in the methanolic extract.

scholarly journals Effects of Supercritical Carbon Dioxide Extraction (SC-CO2) on the content of tiliroside in the extracts from Tilia L. flowers

2019 ◽  
Vol 17 (1) ◽  
pp. 302-312 ◽  
Author(s):  
Aleksandra Pieczykolan ◽  
Wioleta Pietrzak ◽  
Edward Rój ◽  
Renata Nowak
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Ethanol Concentration ◽  
Wide Spectrum ◽  
Total Phenolic ◽  
Supercritical Carbon Dioxide Extraction ◽  
Carbon Dioxide Extraction ◽  
First Time ◽  
Optimum Extraction ◽  
Supercritical Carbon

AbstractTiliroside is one of the main flavonoid compounds responsible for a wide spectrum of biological activity of Tilia L. Up to now, several extraction techniques have been reported for extracting this compound from Tilia L. In this work for the first time supercritical carbon dioxide extraction was used for this purpose. Experiments were performed using supercritical carbon dioxide with 5% and 10% of ethanol as solvent, aiming a recovery content of tiliroside, temperature from 45 to 80°C, pressure from 100 to 220 bar and time from 20 to 60 minutes. The statistically generated optimum extraction conditions to obtain the highest content of tiliroside were established as: pressure of 200 bar, temperature 65°C and 45-50 minutes for 5% ethanol concentration and pressure of 220 bar, temperature 65°C and 15 minutes for 10% ethanol concentration.A liquid chromatography-electrospray ionization-tandem mass spectrometry method (LC-ESI-MS/MS) was used to determine the content of tiliroside in the obtained extracts. In addition, the total phenolic (TPC) and flavonoid (TFC) content and antioxidant activity (DPPH• method) were determined.

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