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    Flaxseed oil-wax oleogels replacement for tallowfat in sucuk samples provided higher concentrations of polyunsaturated fatty acids and aromatic volatiles
    (Elsevier Sci Ltd, 2022) Yılmaz, Emin; Toksoz, Buse
    The aims of the present study were to partially replace tallowfat with oleogels in sucuk formulations, and compare the samples. Flaxseed oil-sunflower wax (SWO) and beeswax oleogels (BWO) were included at 17.17% in the same recipe against control with tallowfat. Sucuk-BWO had higher fat and lower moisture contents. There were color and pH differences, and weight (16.56%) and cooking loss (16.03%) values were highest in the control sample. Sucuk-SWO and Sucuk-BWO had around 32.20% and 33.32% of polyunsaturated fatty acids, while it was only 1.86% in the control sample. The instrumental texture values of oleogel-containing samples were usually lower. The number of volatiles were 11, 14, and 20 in control, Sucuk-SWO, and Sucuk-BWO samples. Almost all sensory descriptive attributes (appearance, hardness, chewiness, fattiness, juiciness, aroma, and flavor) were lower in the oleogel-containing samples. Likewise, consumer hedonic scores of the oleogel-containing samples were lower. Overall, oleogel replacement in sucuk yielded some nutritional benefits, but improvements are required for other quality traits.
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    Structure, Rheological and Sensory Properties of Some Animal Wax Based Oleogels
    (Japan Oil Chemists Soc, 2020) Yılmaz, Emin; Uslu, Eda Keskin; Toksoz, Buse
    This study was aimed to prepare oleogels of whale spermaceti wax (WsWO) and lanolin wax (LnWO), and to compare them with well-known animal wax oleogels of shellac (ShWO) and beeswax (BsWO). WsWO, ShWO and BsWO were prepared at 5% (why) organogelator addition level, while LnWO was necessarily prepared at its minimum gelling concentration (C*) of 30% (w/w) addition level. All oleogels were posed high oil binding capacity and thermal reversibility. Melting peak temperatures were ordered as ShWO > BsWO > WsWO > LnWO by calorimetry. X-ray diffraction patterns indicated the presence of both Wand p type polymorphs, together with needle-like crystal morphology. Rheological analyses indicated that the stiffness of the gels were ordered as BsWO > WsWO > LnWO > ShWO. All showed good thixotropy, and thermal stability until 40 degrees C (ShWO until 80 degrees C). Finally, the sensory descriptive analysis indicated that LnWO had distinct negative sheep odor, but WsWO was quite similar to BsWO. Overall, LnWO determined to be not proper for food applications, but WsWO was shown to be a suitable oleogel for food applications.