Minerals in an expanded analytical view – understand raw materials, particles, formulations by expanded X-ray technology AuthorA. Uhl, A. Zierau, Ł. Giliński, J. Gilińska Year2024 SourceSEPAWA Congress LanguageEnglish Pages1 2995LRXLUMiReader X-Rayeye make up remover 21 more facial claycosmeticshome and personal carehpcpigmentsX-Ray STEP-technologyQUANTIFY SAMPLE (IN)HOMOGENEITY OF FACIAL CLAY MASKS WITH MINERALSKAOLINMONTMORILLONITE(green mask)IRON OXIDESTITANIABISMUTH OXYCHLORIDETiO2(red mask).Standard deviation of the mean values of the integral X-ray transmissionCYCLOPENTASILOXANEDIPOTASSIUM PHOSPHATEDISODIUM EDTAPOTASSIUM PHOSPHATESODIUM CHLORIDETransmission profiles More details EditionPoster 121 LocationBerlin, Germany, 16-18 Oct 2024 Internal reference2995
Monodispersed Renewable Particles by Cascade and Density Gradient Size Fractionation to Advance Lignin Nanotechnologies AuthorJingqian Chen, Jing Tian, Nianjie Feng, Like Ning, Dong Wang, Bin Zhao, Tianyu Guo, Junlong Song, and Orlando J. Rojas Year2024 SourceSmall LanguageEnglish Pages2309756 3050he ob- served tendency was further supported by colloidal stability data a relatively high colloidal stability (low LUMiSizer instability indexsuspension stability in water of the monodispersed LPsControl over particle size and shape heterogeneity is highly relevant to the design of photonic coatings and supracolloidal assemblies. Most developments in the area have relied on mineral and petroleum-derived polymers that achieve well-defined chemical and dimensional characteristics. Unfortunately 5 more it is challenging to attain such control when considering renewable nanoparticles. Hereina pathway toward selectable biobased particle size and physicochemical profiles is proposed. Specificallylignin is fractionateda widely available heterogeneous polymer that can be dissolved in aqueous solutionto obtain a variety of monodispersed particle fractions. More details Edition20 Internal reference3050 Open publication →
Multidimensional Analysis using Flow Cytometry and Single Particle Light Scattering Technology AuthorMoritz Moß, Johannes Walter, Dietmar Lerche and Wolfgang Peukert Year2024 SourceInternational Conference Dispersion Analysis & Materials Testing 2024 LanguageEnglish Pages1-2 2930flow cytometrysingle particle light scatteringparticle size distribution 4 more shape characterizationmultidimensional analysisLUMiSpocLSpoc More details EditionAbstracts LocationBerlin, Germany, 10-11 June 2024 Internal reference2930 Open publication →
Multidimensional particle and liquid dispersion characterization by advanced analytical centrifugal sedimentation AuthorSt. Kuechler, D. Krause, S. Boldt, St. Kirsch, J. Walter, D. Lerche Year2024 SourceBOOK OF ABSTRACTS LanguageEnglish Pages48 2966LUMiSizerLSMultidimensional particle characterization is nowadays much advanced by analytical ultracentrifugation (AUC) 9 more which provides access to sizes below one nanometer. Besides the sizemanifold characteristics of the particles or macromolecules can be determined todaysuch as shape anisotropydensity or optical properties. As the AUC measurement range is favorable for low sedimentation coefficientsmicro- und submicro-particles especially of higher density are often sedimenting too fast even at the lower permitted rpm of an AUC. In this caseanalytical centrifuges (AC) may be appliedanalytical centrifugationevaluation of suspension and emulsion stability and prediction of the shelf life; determination of the hindrance function for the separation behavior; centrifugal filtration; particle deformation; sediment formation and its packing concentration in dependence of applied centrifugal forces. The latter allows also the study of the deformation/packing of flocculated or soft particles. Special designed cells allow the superposition of magnetic fields. psdpsa More details EditionAbstracts LocationAUC2024 26 th International Conference on Analytical Ultracentrifugation, Banz Abbey/Germany, July 22 –27, 2024 Internal reference2966 Open publication →
Multidimensional particle and liquid dispersion characterization by advanced analytical centrifugal sedimentation AuthorSt. Kuechler, D. Krause, S. Boldt, St. Kirsch, J. Walter, D. Lerche Year2024 SourceRecordings LanguageEnglish 2996LUMiSizerLSMultidimensional particle characterization is nowadays much advanced by analytical ultracentrifugation (AUC) 11 more which provides access to sizes below one nanometer. Besides the sizemanifold characteristics of the particles or macromolecules can be determined todaysuch as shape anisotropydensity or optical properties. As the AUC measurement range is favorable for low sedimentation coefficientsmicro- und submicro-particles especially of higher density are often sedimenting too fast even at the lower permitted rpm of an AUC. In this caseanalytical centrifuges (AC) may be appliedanalytical centrifugationevaluation of suspension and emulsion stability and prediction of the shelf life; determination of the hindrance function for the separation behavior; centrifugal filtration; particle deformation; sediment formation and its packing concentration in dependence of applied centrifugal forces. The latter allows also the study of the deformation/packing of flocculated or soft particles. Special designed cells allow the superposition of magnetic fields. psdpsavideomp4 More details Edition27 min LocationAUC2024 26 th International Conference on Analytical Ultracentrifugation, Banz Abbey/Germany, July 22 –27, 2024 Internal reference2996 Open publication →
New Insight into Food-Grade Emulsions: Candelilla Wax-Based Oleogels as an Internal Phase of Novel Vegan Creams AuthorIwona Szymanska, Anna Zbikowska and Sylwia Onacik-Gür Year2024 SourceFoods LanguageEnglish Pages729 2956oleogels; candelilla wax; O/W emulsions; vegan food; cream analoguesCream-type emulsions containing candelilla wax-based oleogels (EC) were analyzed for their physicochemical properties compared to palm oil-based creams (EP). The microstructurerheological behavior 9 more stabilityand color of the creams were determined by means of non-invasive and invasive techniques.LSLUMiSizerfoodnutritionStability of Cream-Type Emulsions against Environmental StressesThe stability of cream-type emulsions was assessed in terms of ... and resistance to centrifugal forceanalyzed using a LUMiSizer More details Edition13 Internal reference2956 Open publication →
Od dyspergowalności, poprzez stabilność, po sekrety osadów – wieloetapowa analiza oczyszczających maseczek glinkowych do twarzy AuthorA. Uhl, Ł. Giliński, J. Gilińska Year2024 SourceŚwiata Przemysłu Kosmetycznego, JAKOŚĆ I BEZPIECZEŃSTWO, Farmacom LanguagePolish Pages98-104 3039LUMiSizerLScosmetics 17 more hpcdispersibilityhomogeneitystabilityaccelerated separationsuspensionsemulsionsX-ray technologyoptical STEP-Technologypurifying facial clayLRXLUMiReader X-RayW artykule przedstawiono wieloetapową procedurę pozwalającą zrozumieć dyspergowalność cząstekprzebieg separacji w warunkach przyspieszonych instrumentalnie i w wyższej temperaturzea także gradientów stężeń w rozdzielanych fazach. Trzy kroki instrumentalne w połączeniu z dwoma krokami wizualnej oceny próbek składają się na pięcioetapową procedurę.Charakterystyka jednorodności próbki (promieniowanie rentgenowskie) LUMiReader® X-RayPrzyspieszona separacja monitorowana za pomocą NIR Instrument analityczny LUMiSizer® pozwala przyspieszyć rozdzielanie faz dyspersjiCharakterystyka jednorodności próbki (promieniowanie rentgenowskie) More details Edition03/2024 Internal reference3039 Open publication →
Oil Separation of Lubricating Greases under Static Conditions: Analytical Photo-Centrifuge and DIN 51817 AuthorKarl-Heinz Jacob Year2024 SourceInternational Conference Dispersion Analysis & Materials Testing 2024 LanguageEnglish Pages1-2 2927lubricating greaseoil separationanalytical photo-centrifuge 8 more real-time measurementsLubricating greases reduce friction between moving machine parts. Greases consist of base oilsthickeners and additivesThe advantage of measurements with an analytical photo-centrifuge is that it takes only 42 h instead of 168 h for measurements according to DIN 51817LUMiSizerLSReal-time measurements with an analytical photo-centrifuge allow detailed investiga- tions of the oil separation rate and maximum oil separation of greases under static conditions as a function of temperature (4 °C ... 60 °C) and rotational speed (200 ... 4000 rpm). Measurements on model greases with known oil viscositythickener type or thickener concentration can provide a solid basis for discussions on cause-effect relationships for oil separation of greases depending on their formulation. More details EditionAbstracts LocationBerlin, Germany, 10-11 June 2024 Internal reference2927 Open publication →
Oleogel-Based Nanoemulsions for Beverages: Effect of Self-Assembled Fibrillar Networks on Stability and Release Properties of Emulsions AuthorSai Sateesh Sagiri, Elena Poverenov Year2024 SourceFoods LanguageEnglish Pages680 LS3006LUMiSizernutrition 4 more oleogels; beverages; nanoemulsions; lecithin; stearic acid; sorbitan tristearateReducing the use of stabilizers is one of the main challenges in food emulsionsespecially for beverages. This work aimed to produce oleogel-structured nanoemulsions (NEs) without additional surfactants. Lecithin-stearic acid (LSa) and lecithin-sorbitan tristearate (LSt) oleogels formed stable NEs under optimized sonication conditions.Dynamic Physical Stability of the NEs The long-term stability and underlying destabilizing mechanism of NEs’ phase sep- aration was determined using the LUMiSizer photocentrifugeemulsion instability index More details Edition13(5) Internal reference3006 Open publication →
Opportunities and Challenges of Calendering Sulfide-Based Separators for Solid-State Batteries AuthorCarina Amata Heck, Timon Scharmann, Markus Osenberg, Alexander Diener, Ingo Manke, Peter Michalowski, and Arno Kwade Year2024 SourceBatteries & Supercaps LanguageEnglish Pages1-17 2946LSLUMiSizerbattery 11 more energy storageContinuous densification procedures such as calendering are crucial for sulfide-based solid-state batteries to realize industry- relevant processing. Thereforein this studythe impact of line loadroller circumferential speed and roll temperature on slurry-based Li3PS4 and Li6PS5Cl separators compacted by a lab- calender installed in an argon-gas-filled glovebox was investigatedElectrical energy storage devices such as lithium-ion batteries (LIBs) have become highly relevant these days to face the reduction of climatically critical CO2 and NOX emissions. Besides other approachesalternative concepts like solid-state batteries (SSBs) are being considered to further extend the performance of LIBs. Herethe liquid electrolyte is replaced by a solid electrolyte potentially resulting in higher battery safetyas well as power and energy density due to the possibility of bipolar stacking and a potential application of lithium metal or silicon as anode.Particle size analysis: Intensity-weighted particle size distribution was determined by analytic centrifugation in a LUMiSizer measure- ment devicepsdpsa More details Editione202300487 Internal reference2946 Open publication →
p-Coumaric acid-loaded nanoliposomes: Optimization, characterization, antimicrobial properties and preservation effects on fresh pod pepper fruit AuthorPeiye Liu, Jing Shen, Jiankang Cao, Weibo Jiang Year2024 SourceFood Chemistry LanguageEnglish Pages137672 Novel p-coumaric acid (pCA)-loaded nanoliposomes were prepared by the thin-film hydration methodassisted with ultrasonic treatmentand optimized by the response surface methodology2892 6 more LUMiFugeLFLSLUMiSizerTransmission profiles of pCA liposomes measured by the LUMiFugeTransmission profiles of empty liposomes measured by the LUMiFuge More details Edition435 Internal reference2892 Open publication →
Pea protein [Pisum sativum] as stabilizer for oil/water emulsions AuthorEleonora Olsmats, Adrian R. Rennie Year2024 SourceAdvances in Colloid and Interface Science LanguageEnglish Pages103123 2980LUMiSizerLUMiFugeLS 13 more LFfoodnutritionPea protein Food applications Pickering stabilizers Emulsion stability Ternary phase mapA map of stability for various water/oil/pea protein compositions has been plotted from the numerous reported results. Two clear regions of stability were identified. High internal oil phase emulsions with 70–80%v/v oil content stabilized by total pea protein concentration <2.5%w/v showed stability. Low oil content of 10–30%v/v for a range of total pea protein concentrations >0.5%w/v have also been identified as stable. Intermediate oil content and pea protein concentrations >4% w/v are unexplored regions and are likely to be areas of fruitful future research. The wide range of stability suggests that different stabilization mechanisms could be important for different compositions and careful consideration has to be taken to avoid oversimplification. Both stabili- zation with particlesi.e. Pickering emulsionsand protein unfolding have been suggested as mechanisms. The diverse way of describing stability makes it difficult to intercompare results in different studies. A summary of different oil types used have been presented and several properties such as dynamic viscositydensitythe dielectric constant and interfacial tension have been summarized for common vegetable oils. The type of vegetable oil and emulsion preparation techniques were seen to have rather little effect on emulsion stability More details Edition326 Internal reference2980 Open publication →
Phase-Change Dispersions for Energy Storage and Energy Turnaround: 10 Years of Research at the Lucerne University of Applied Sciences and Arts AuthorRebecca Ravotti, Oliver Fellmann, Poppy O’Neill, Silvan Von Arx, Ludger J. Fischer Year2024 SourceInternational Conference Dispersion Analysis & Materials Testing 2024 LanguageEnglish Pages1-2 2933phase-change dispersionsPCDsthermal energy storage 11 more temperature stabilizationmaterial scienceThe stability against creamingsedimentation and coalescence was investigated with a LUMiSizer optical centrifugeCO2 emissions from space heating and cooling have nearly tripled from 1990 to 2020 and are projected to increase significantly in the future. In response to the growing need to bridge the gap between energy generation and demand while facilitating greater integration of renewablesthermal energy storage (TES) has emerged as an ideal solution. Latent heat storage (LHS) using phase-change materials (PCM) stands out for its benefitsincluding greater compactness and the maintenance of consistent operational temperatures. In LHSthe ability of PCMs to store and release heat upon heating and cooling respectively at a nearly isothermal temperature is exploited. A key element to the correct functioning of a LHS setup is the PCM itself. To be considered suitablePCMs need to be characterized by narrow phase-change temperature rangehigh enthalpy of fusion/solidificationlow supercooling and long-term stability. LS More details EditionAbstracts LocationBerlin, Germany, 10-11 June 2024 Internal reference2933 Open publication →
Physical stability of α-terpineol-based nanoemulsions assessed by direct and accelerated tests using photo centrifuge analysis AuthorLorena de Oliveira Felipe, Juliano Lemos Bicas, Teetach Changwatchai, Emmanuel Owoicho Abah, Mitsutoshi Nakajima, Marcos A. Neves Year2024 SourceLWT LanguageEnglish Pages116513 3030LSnutritionR-(+)-Limonene (PubChem CID: 440917) α-Terpineol (PubChem CID: 443162) Tween®20 (PubChem CID: 443314) Quillaja saponins (PubChem CID: 163408272) Keywords: Accelerated shelf-life testing Colloidal systems Instability index LUMiSizer® Photo-centrifuge analysis 3 more Maintaining the stability and integrity of colloidal systems (CSs)he effect of temperature and the size of the droplet oils on the physical stability of these CSs was estimated by LUMiSizer®with the findings relying on the so-called Instability Index.Accelerated stability test The accelerated physical stability analysis of EMs and NEs was evaluated by analytical photo centrifuge using LUMiSizer More details Edition205 Internal reference3030 Open publication →
READY-TO-DRINK COFFEE BEVERAGES AND METHOD OF MAKING THEREOF TRINKFERTIGE KAFFEEGETRÄNKE UND VERFAHREN ZUR HERSTELLUNG DAVON BOISSONS AU CAFÉ PRÊTES À BOIRE ET LEUR PROCÉDÉ DE FABRICATION AuthorANANTHARAMAN, Helen, Gillian Powell, NAPOLITANO, Guillermo, E, YE, Yubin,FU, Jun-Tse, Ray,ROUSSET, Philippe, SHER, Alexander, A Year2024 SourceEP 3 668 324 B1 LanguageEnglish Pages1-8 Beverage physical stability was evaluated using a Lumisizer Model 611. Lumisizer works on the principle of centrifugation of samples (at 2300 g-force120 min). Transmission profiles are generatedand Space and Time resolved extinction coefficients of the samples are recorded. The difference in the separation rates (ex- pressed as Instability Index) between sample and refer- ence allows to assess relative physical stability of the products against sedimentation and/or creaming. 3094LS 3 more foodnutritionSociété des Produits Nestlé S.A. More details EditionEUROPEAN PATENT SPECIFICATION Internal reference3094 Open publication →
Removal of cesium and strontium ions with enhanced solid-liquid separation by combined ion exchange and BaSO4 co-precipitation AuthorOguzhan Kivan, Muhammad Yusuf, David Harbottle, Timothy N. Hunter Year2024 SourceJournal of Water Process Engineering LanguageEnglish Pages104934 2938LUMiReader X-RayLRXRadioactive liquid waste 15 more Ion exchangeZeolitesInorganic precipitationCompressive yield stressgravitational sedimentation ratesCentrifugal sedimentation profiles for compressibility analysisLUMiSizerLSCompressive yield stress as a function of volume fraction was calculated from the centrifugal sedimentation profilesX-ray sedimentation rates for pure BaSO4 (black) and with Cs+ and Sr2+ions (red) and the combined system (blue) containing clinoptilolite and BaSO4 with both ions. Dashed lines represent linear fits to the settling region. Inset (b)the final bed volume fractions (left-hand axis) and mean settling rate (right-hand axis). The sedimentation of BaSO4 (black)BaSO4 with Cs+ and Sr2+ ions (red)and combined system synthesised with clinoptilolite and BaSO4 under centrifugation at various speeds (500–3000 rpm). Vertical dotted lines indicate the acceleration in centrifugation. Compressive yield stress of BaSO4 (black)BaSO4 with Cs+ and Sr2+(red)and combined composite with clinoptilolite and BaSO4 with ions (blue) from LUMiSizer® analysis More details Edition59 Internal reference2938 Open publication →
Resolved Simulation for the Prediction of Classification in Decanter Centrifuges AuthorHelene Katharina Baust , Hermann Nirschl and Marco Gleiß Year2024 SourceChemEngineering LanguageEnglish Pages48 LUMiSizerLS; 2976Solid–liquid separation plays a decisive role in various industrial applications particularly in the treatment and purification of suspensions. Solid bowl centrifugessuch as the decanter centrifuge 12 more are commonly employed in these processes as they operate continuously and enable high throughputs with short processing times. Howeverpredicting the separation performance of solid bowl centrifuges proves to be challenging due to dynamic phenomena within the apparatussuch as particle settlingsediment build-upconsolidation and sediment transport. In practicedesign considerations and the dimensioning of the apparatus rely on analytical models and the manufacturer’s expertisedecanter centrifuge; solid–liquid separation; classification; CFD simulationMeasurements of the settling velocity distribution of the particle system as a function of the solids volume fraction provided the basis for the determination of the hindered settling function (Equation (7)). The analytical centrifuge LUMiSizer (LUM GmbHBerlinGermany) allows us to measure the settling behavior of real particle systems on a small scale; Determination of the Material Functions; To evaluate the effect of classification in decanter centrifugesthe first step was the determination of suitable material functions. The hindered settling function relates settling velocity distribution at different solids volume fractions to the Stokes’ settling velocity (Equation (7)). For this purposethe settling velocities are measured with the LUMiSizer More details Edition8(3) Internal reference2976 Open publication →
Rheological properties and stability of Pickering emulsions stabilized with Differently Charged Particles AuthorMathis Benyaya, Marie-Alexandrine Bolzinger, Yves Chevalier, Claire Bordes Year2024 SourceInternational Conference Dispersion Analysis & Materials Testing 2024 LanguageEnglish Pages1-2 2924Pickering emulsionsRheologyCoalescence 4 more FormulationStabilityLUMiSizerLS More details EditionAbstracts LocationBerlin, Germany, 10-11 June 2024 Internal reference2924 Open publication →
Rheological properties and stability of Pickering emulsions stabilized with differently charged particles AuthorMathis Benyaya, Marie-Alexandrine Bolzinger, Yves Chevalier, Claire Bordes Year2024 SourceColloids and Surfaces A: Physicochemical and Engineering Aspects LanguageEnglish Pages133514 Pickering emulsionsRheologyCoalescenceFormulation 15 more Stability2949LSLUMiSizerThe stability of the emulsions was analyzed using a Dispersion Analyser LUMiSizer16 instrument [3435]. The lower the separation indexthe more stable the emulsion against forced coalescence. The separation index decreased with the droplet size for all types of emulsions (Figure 7). Figure 6. Time evolution of the transmission profiles as a function of the height in an N- emulsion sampleSeparation index of 4 different emulsions as a function of their droplet diametersStability against forced coalescence by centrifuge of the different emulsionsApplication of various types of destabilizing stimuli causing coalescence allows faster assessment of emulsion stability. In particularcentrifugation has been shown to be correlated with the thermal stability of surfactant-based emulsions (ISO/TR 18811). Comparison between thermal ageing coalescence and centrifugation-induced coalescence has been made for classical emulsionsbut notas far as we knowfor Pickering emulsions. It is worth studying the case of Pickering emulsions because the stabilization mechanisms by adsorbed particles is different of that of surfactants. The stability of classical and Pickering emulsions has been also assessed by rheology measurements More details Edition687 Internal reference2949 Open publication →
Role of interfacial flexibility in emulsifying ability of coconut protein isolate remodeled by pulsed light coupled with weak alkali cycling treatment AuthorQianqian Zhu, Wenxue Chen, Weijun Chen, Ming Zhang, Qiuping Zhong, Jianfei Pei, Haiming Chen Year2024 SourceFood Hydrocolloids LanguageEnglish Pages109373 The long-term stability of emulsions was evaluated using LUMiSizerLS2910The interfacial flexibility of proteins is a crucial factor that affects their functional properties. In this study 10 more we investigated the role of interfacial flexibility in the emulsifying ability of coconut protein isolate (CPI) treated by pulsed light coupled with weak alkali cycling (pH 7 → 9 → 7). After treatmentthe structure of CPI was unfolded and re-foldedwhich resulted in the exposure of hydrophobic groups and the formation of smaller aggregateswith the change of secondary structure.Traditionallyemulsions were commonly stabilized using a high dose of synthetic surfactants to prevent flocculation of oil droplets (5–50%) (McClementsBai& Chung2017). With the increasing demand of consumers for ‘healthy’ food productsscientists pay more attention to the nature-derived biomolecules as emulsion stabilizers. Polysaccharides and proteins are considered as options for food emulsion design. As a new source of rarely utilized plant-based proteincoconut (Cocos nucifera L.) protein has a well-balanced amino acids profile of 71%–77% essential amino acids More details Edition147, Part A Internal reference2910 Open publication →
