Browsing by Subject "wettability"

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    Effects of particle size distribution on some physical, chemical and functional properties of unripe banana flour
    (Elsevier Ltd, 2016) Savlak N.; Türker B.; Yeşilkanat N.
    The objective of this study was to examine the effect of particle size distribution on physical, chemical and functional properties of unripe banana flour for the first time. A pure triploid (AAA group) of Musa acuminata subgroup Cavendish (°Brix;0.2, pH;4.73, titratable acidity; 0.56 g/100 g malic acid, total solids; 27.42%) which was supplied from Gazipaşa, Antalya, Turkey from October 2014 to October 2015 was used. Size fractions of <212, 212–315, 316–500 and 501–700 μm were characterized for their physical, functional and antioxidant properties. Particle size significantly effected color, water absorbtion index and wettability. L∗ value decreased, a∗ and b∗ values decreased by increasing particle size (r2 = −0.94, r2 = 0.72, r2 = 0.73 respectively). Particles under 212 μm had the lowest rate of wettability (83.40 s). A negative correlation between particle size and wettability (r2 = −0.75) and positive correlation between particle size and water absorption index (r2 = 0.94) was observed. © 2016
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    Particle size affects physical properties and antioxidant activity of unripe banana peel
    (Parlar Scientific Publications, 2020) Savlak N.; Turker B.
    Unripe banana peel flour of Dwarf Cavendish banana (Musa spp. AAA) peel (Gazipasa, Turkey) of different particle sizes (<212 μ m, 212-315 μm, 316-500 μm, 501-700 μm) were investigated for their physicochemical, functional properties and antioxidant activity and data were analyzed by SAS Statistical Programme using Completely Randomized Design Proc Glm prosedure. Particle size mostly affected L* value (60.60 - 65.03), bulk density (71.87 - 74.78 kg m"3), tapped density (294.25 - 357.29 kg m~3), wettability (1.19 - 9.72 s), antioxidant activity (159.86 - 198.57 mmol Fe (II) / g dry peel flour; 40.11 - 44.79 mg Trolox equivalent / g dry peel flour) and phenolic content (2.17- 2.64 mg GAE / g dry peel flour) of unripe banana peel flour. L* value, tapped density and wettability decreased; bulk density, water absorbtion index and oil holding capacity increased as particle size increased. Antioxidant activity (FRAP and DPPH methods) and total phenolic content of unripe banana peel flour also increased by increasing particle size. This study is the first study mentioning the effect of particle size on quality of unripe banana peel. To the best of authors' knowledge, the study also provided the first data on some handling properties of unripe banana peel flour in terms of tapped density, Hausner ratio, Carr Index and wettability. © 2020 Parlar Scientific Publications. All rights reserved.
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    Triboelectric and Hydrophobic Characterization of Functionalized Lignocellulosic Materials; [Triboelektrična i hidrofobna svojstva funkcionaliziranih lignoceluloznih materijala]
    (University of Zagreb Faculty of Forestry and Wood Technology, 2023) Zor M.; Şen F.; Eroğlu E.; Candan Z.
    In the development of sustainable products, lignocellulosic materials with hydrophobic properties can be functionalized and used as reinforcement, especially in bio-composite materials, as well as in various applications such as packaging, water-repellent and self-renewing materials. This study is aimed to improve the surface properties and triboelectric properties of wood materials. Functionalized wood veneers were prepared by impregnating 3 different wood veneers (beech, mahogany and oak) with 5 different chemical solutions (cationic cellulose, cationic starch, polyethyleneimine, sodium alginate and carboxymethyl cellulose). Structural characterization of the functional wood materials obtained was investigated by Fourier-transform infrared spectroscopy (FT-IR) technique, wettability and surface properties were examined by contact angle measurements, and mor-phological properties were examined by scanning electron microscopy (SEM). The triboelectric properties of the devices prepared using functionalized wood materials were investigated. As a result, it was determined that the hydrophobic properties of wood materials were improved and showed triboelectric properties. It demonstrates that functionalized wood materials can be used to power low-power electronic devices. © 2023 by the author(s). Licensee Faculty of Forestry and Wood Technology, University of Zagreb.