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KAÇAR, OYA

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KAÇAR

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OYA

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    Publication
    Development of purple basil (Ocimum basilicum L.) sherbet fortified with propolis extract using response surface methodology
    (Springer, 2021-07-03) Karabacak, Azime Özkan; Özoğlu, Özüm; Durgut, Senanur; Bağatırlar, Sina Recep; Kaçar, Oya; Tamer, Canan Ece; Korukluoğlu, Mihriban; ÖZKAN KARABACAK, AZİME; ÖZOĞLU, ÖZÜM; Durgut, Senanur; Bağatırlar, Sina Recep; KAÇAR, OYA; TAMER, CANAN ECE; KORUKLUOĞLU, MİHRİBAN; Ziraat Fakültesi; Tarla Bitkileri Bölümü; 0000-0003-4175-4477; 0000-0002-1314-4965; 0000-0003-3600-142X; AAH-2319-2019; AAG-8503-2021; IVU-8132-2023; JOF-0451-2023; CFB-4587-2022; FFT-5849-2022; J-5125-2018
    The aim of this study was to develop a novel purple basil sherbet fortified with propolis extract. The levels of the purple basil (Ocimum basilicum L.) aerial parts (leaves, flowers and stems) (200-300 g/L), propolis extract (48-72 mg/100 mL) and infusion time (30-40 min) on total phenolic content (TPC), antioxidant activity (FRAP, DPPH, CUPRAC methods), color parameters (L*, a*, b*, C*, h degrees) and sensory properties were investigated by using Box-Behnken design. According to the model, the optimized values for the propolis extract concentration, purple basil concentration and infusion time were 58.66 mg/100 mL, 300 g/L and 40 min, respectively. Moreover, antimicrobial activity of the beverage samples against Bacillus subtilis, Escherichia coli, Salmonella Enteritidis, Lactiplantibacillus plantarum, Saccharomyces cerevisiae, Schizosaccharomyces pombe, Aspergillus niger and Penicillium roqueforti was also determined.
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    Publication
    A laboratory study of the acaricidal, repellent and oviposition deterrent effects of three botanical oils on Tetranychus urticae (Koch, 1836) (Acari: Tetranychidae)
    (Ege Üniversitesi, 2020-04-25) Keskin, Gizem; Kumral, Nabi Alper; Kacar, Oya; Keskin, Gizem; KUMRAL, NABİ ALPER; KAÇAR, OYA; Fen Bilimleri Enstitüsü; Bitki Koruma Bölümü; 0000-0001-9442-483X; A-1388-2019; AAG-7449-2021; KGA-9390-2024
    The biological activities of essential oil obtained from water distillation process of basil leaves [Ocimum basilicum L. (Lamiales: Lamiaceae)] cv Round Midnight and crude oil obtained from the cold-pressed process of chinaberry tree seeds [Melia azedarach L. (Sapindales: Meliaceae)] and a commercial neem oil product (Nimbecidine) [Azadirachta indica (A. Juss, 1830) (Sapindales: Meliaceae)] were assessed against two-spotted spider mites, Tetranychus urticae (Koch, 1836) (Atari: Tetranychidae) using a residual method on leaf disc under laboratory conditions at Bursa Uludag University during 2018-2019. The lethal concentrations (LC50 and LC90) of Nimbecidine, chinaberry and basil oils were estimated as 0.8 and 1.8 mg/L, 4.0 and 6.9%, 5.4 and 11.7%, respectively, 72 h after treatment. The lethal times (LT50 and LT90) of Nimbecidine (1 mg/L), chinaberry (6%) and the basil (8.4%) were 64 and 107 h, 41 and 73 h, 65 and 110 h, respectively. The females had a strong aversion to bean leaf surfaces sprayed with the sublethal concentrations of Nimbecidine (0.125-0.75 mg/L), chinaberry (0.75-3%) and basil (0.7-1.4%) oils. Significant decreases were recorded in the number of eggs laid on bean leaves sprayed with the sublethal concentrations for Nimbecidine (0.031-0.5 mg/L), chinaberry (0.75-3%) and the basil (1.4-5.6%) oils compared with unsprayed bean leaves. The study showed that the assessed concentrations of the oils obtained from the basil and chinaberry compared to the commercial botanical product (Nimbecidine) have similar biological effects on T. urticae.