Search results for "Hydration kinetics"

showing 2 items of 2 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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Rate-limiting reaction of C 3 S hydration - A reply to the discussion “A new view on the kinetics of tricalcium silicate hydration” by E. Gartner

2018

Abstract In the case of coupled solids-solution reactions, any mean accelerating or decelerating one of the reaction, will also change the other reaction(s) in the same way, through the coupling mediated by the solution. The observation of any kinetic change by one of these means should not lead to too rapid conclusion on the limitation of kinetics and it must be done with great caution. Contrary to what Gartner mentioned, the acceleration of C3S hydration by the addition of calcium silicate hydrate seeds, is not a trivial evidence suggesting that hydration kinetics “has to be” limited by the C-S-H precipitation and that the C3S dissolution can be neglected. In our paper, efforts have been …

ChemistryKinetics0211 other engineering and technologiesMineralogyThermodynamics02 engineering and technologyBuilding and ConstructionLimiting021001 nanoscience & nanotechnologychemistry.chemical_compound021105 building & constructionGeneral Materials ScienceHydration kineticsCalcium silicate hydrate0210 nano-technologyDissolutionTricalcium silicateCement and Concrete Research
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