Search results for " Response Surface Methodology"

showing 4 items of 4 documents

Assessment of Postharvest Dehydration Kinetics and Skin Mechanical Properties of “Muscat of Alexandria” Grapes by Response Surface Methodology

2016

The dipping of berries in a dilute solution of sodium hydroxide during a short time was evaluated as pretreatment undertaken prior to convective dehydration of wine grapes. The impact of the sodium hydroxide content and dipping time on weight loss (WL) at different dehydration times was thoroughly assessed using central composite design (CCD) and response surface methodology (RSM). Furthermore, the effects of these two variables were also investigated on the skin mechanical properties of dehydrated grapes. The effect of these two pretreatment factors on the dehydration kinetics and skin hardness was satisfactorily fitted to regression models. The berry pretreatment with low sodium hydroxide…

Central composite designMuscat of Alexandria grapeMineralogyBerryIndustrial and Manufacturing Engineering040501 horticultureGrape dehydration kineticchemistry.chemical_compound0404 agricultural biotechnologyResponse surface methodologymedicineDehydrationResponse surface methodologyFood scienceGrape dehydration kinetics; Alkaline pretreatment; Berry skin mechanical properties; Response surface methodology; Muscat of Alexandria grapesBerry skin mechanical propertiesBerry skin mechanical propertieSafety Risk Reliability and QualityAlkaline pretreatmentChemistryProcess Chemistry and Technology04 agricultural and veterinary sciencesSettore AGR/15 - Scienze E Tecnologie Alimentarimedicine.disease040401 food scienceMuscat of Alexandria grapesSodium hydroxideGrape dehydration kineticsPostharvestHydroxide0405 other agricultural sciencesLow sodiumFood Science
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Recovery of oil with unsaturated fatty acids and polyphenols from chaenomelessinensis (Thouin) Koehne: Process optimization of pilot-scale subcritica…

2017

The potential effects of three modern extraction technologies (cold-pressing, microwaves and subcritical fluids) on the recovery of oil from Chaenomelessinensis (Thouin) Koehne seeds have been evaluated and compared to those of conventional chemical extraction methods (Soxhlet extraction). This oil contains unsaturated fatty acids and polyphenols. Subcritical fluid extraction (SbFE) provided the highest yield—25.79 g oil/100 g dry seeds—of the three methods. Moreover, the fatty acid composition in the oil samples was analysed using gas chromatography–mass spectrometry. This analysis showed that the percentages of monounsaturated (46.61%), and polyunsaturated fatty acids (42.14%), after appl…

FlavonoidPharmaceutical ScienceMass spectrometry01 natural sciencesGas Chromatography-Mass SpectrometryArticleAnalytical Chemistrylcsh:QD241-4410404 agricultural biotechnologylcsh:Organic chemistryResponse surface methodologyDrug DiscoveryPlant OilsProcess optimizationPhysical and Theoretical Chemistry<i>Chaenomelessinensis</i> (Thouin) Koehne seed oil; subcritical fluid extraction; response surface methodology; fatty acid composition; polyphenol contentMicrowavesRosaceaeChaenomelessinensis (Thouin) Koehne seed oil; Fatty acid composition; Polyphenol content; Response surface methodology; Subcritical fluid extraction; Organic Chemistrychemistry.chemical_classificationChromatography010405 organic chemistryPolyphenol contentExtraction (chemistry)Organic ChemistryPilot scalePolyphenols04 agricultural and veterinary sciences040401 food scienceChaenomelessinensis (Thouin) Koehne seed oil0104 chemical scienceschemistryChemistry (miscellaneous)PolyphenolFatty Acids UnsaturatedMolecular MedicineFatty acid compositionFatty acid compositionSubcritical fluid extractionPolyunsaturated fatty acid
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Tecniche di ottimizzazione multi-obiettivo e metodologie di supporto alle decisioni per la progettazione di processi di stampaggio di lamiere

2010

Settore ING-IND/17 - Impianti Industriali MeccaniciSheet Stamping design Response Surface Methodology Multi-criteria analysis Electre methodSettore ING-IND/16 - Tecnologie E Sistemi Di Lavorazione
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Optimization of Polyphenols' Recovery from Purple Corn Cobs Assisted by Infrared Technology and Use of Extracted Anthocyanins as a Natural Colorant i…

2022

An ecofriendly extraction technology using infrared (IR) irradiation Ired-Irrad® was applied to purple corn cobs to enhance polyphenol recovery for the first time. The IR extraction efficiency was compared to that of the water bath (WB) method. Response surface methodology (RSM) using a central composite design was conducted to determine the effect of the experimental conditions (extraction time and treatment temperature) and their interactions on the total polyphenol and anthocyanin yields. Optimal extraction of total phenolic compounds (37 mg GAE/g DM) and total monomeric anthocyanins (14 mg C3G/g DM) were obtained at 63 °C for 77 min using IR as an extraction technique and water as a sol…

TechnologyPlant ExtractsOrganic ChemistryBrassica napusPharmaceutical SciencePolyphenolsWaterZea maysAnalytical ChemistryAnthocyaninsBlat de moroChemistry (miscellaneous)Drug DiscoveryMolecular MedicineColorants en els alimentsTecnologia dels alimentsPhysical and Theoretical Chemistrypurple corn cobs; infrared-assisted extraction; response surface methodology; anthocyanins; natural colorant
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