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    Influence of yogurt adding on physicochemical and sensorial properties of some lettuce types
    (WFL Publisher, 2013) Tarakçı, Zekai; Uǧur, Atnan; Temiz, Hasan; Dağ, Beşir
    The aim of this study was to investigate the effects of adding yogurt and roasting treatment on some physicochemical, L*, a* and b* colour values and organoleptic acceptability properties of lettuce types. The 10 different lettuce varieties included kasam, mangano, robinson, olenka, arapsaçi{dotless}, red leaf, lolorosso, red salat, palamet and salanova were used. After cleaning and cutting into 0.5 mm, the lettuces were roasted with equal amount added yogurt for about 5 min and then applied to the mixing process. There were significant differences in dry matter and pH values between the lettuces added yogurt and raw lettuces. While dry matter of lettuces was increased significantly with yogurt, the pH levels were decreased. The whiteness values (L*) for lettuces have caused significant differences by adding yogurt and roasting applications. L* values of control sample without lettuces were significantly higher than the samples prepared by adding yogurt to lettuces. Lettuce types had a significant effect on the L* colour of samples. The lettuces were a significant a* color values between before and after roasting. After adding yogurt to lettuces; b* values of kasam, robinson and olenka colour values were significantly higher than the other samples prepared by adding yogurt to lettuce types. The lowest overall acceptability scores were detected for olenka, robinson and lolorosso lettuce types while the highest overall acceptability scores were detected for arapsaci, red salat and salanova lettuce types, which were common use in Turkish meals.
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    Some physicochemical properties and mineral contents of stirred yoghurts containing different fruit marmalades
    (Wiley-Blackwell, 2018-02-01) Temiz, Hasan; Tarakçı, Zekai; Yarılgaç, Tarık; Dağ, Beşir
    In this study chemical properties and mineral levels of yoghurts containing different fruit marmalades were investigated. Cherry laurel, loquat fruit and kiwi marmalade were used to make the stirred yoghurts, and the calcium, phosphorus, sodium, magnesium, manganese, iron, zinc, copper, boron, lead, nickel, molybdenum, chromium, cadmium, cobalt levels were determined by an inductively coupled plasma optical emission spectrometer (ICP–OES). The total solid, fat, ash, pH, viscosity and syneresis contents of the yoghurt samples changed between 13.85–21.02%, 2.45–2.90%, 0.82–0.94%, 4.11–4.22, 2104–2454 cP and 42.0–47.0 mL/100 g, respectively. The mean concentrations in the yoghurts of these minerals were 104.66–118.94 calcium, 95.81–112.42 phosphorus and 13.47–15.04 magnesium as mg/100 g, 235.00–254.00 iron, 429.00–453.00 zinc and 70.45–122.90 copper as μg/100 g. The recommended dietary allowance (RDA) was calculated on the basis of the intake of one yoghurt portion (125 g).