Browsing by Author "Aksu, Filiz"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Thumbnail Image
    Publication
    In-vitro bioaccessibility of antioxidant properties of bee pollen in Turkey
    (Soc Brasileira Ciencia Tecnologia Alimentos, 2021-06-01) Altiner, Dilek Dulger; Altunatmaz, Sema Sandikci; Sabuncu, Merve; Aksu, Filiz; Şahan, Yasemin; Sabuncu, Merve; ŞAHAN, YASEMİN; Bursa Uludağ Üniversitesi/Fen Bilimleri Enstitüsü; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Gıda Mühendisliği Bölümü; 0000-0003-3457-251X; 0000-0001-8771-0643; KMX-7659-2024; ABE-6748-2020
    The study aims to determine certain physicochemical properties (moisture, ash, titratable acidity, pH, and color), total phenolic content, antioxidant capacity (CUPRAC, ABTS, DPPH) and bioaccessibility of 20 bee pollen samples (10 unpackaged and 10 trademarked products in their original packages) sold in Turkey. The total phenolic content of the bee pollen samples was detected as 147.10-462.02 mg GAE/g and bioaccessibility ranged from 36.91% to 77.87%. The highest total value for antioxidant capacity was assessed as 83.24-257.27 ?mol TE/g by the CUPRAC method. When the bioaccessibility of the antioxidant capacity of bee pollen was compared among the methods, the highest value (95.76%) was obtained for the sample M by the CUPRAC method. Antioxidant capacity and bioaccessibility of the unpackaged bee pollen samples were lower than those of the trademarked products. Based on overall evaluations, it can be deduced that bee pollen known for its potential beneficial effects on health may well be used as a functional food additive in the production of various food products with its high antioxidant and bioaccessibility features.
  • Thumbnail Image
    Item
    Prevalence and identification by multiplex polymerase chain reaction patterns of Cronobacter spp. isolated from plant-based foods
    (Soc Brasileira Ciencia Tecnologia Alimentos, 2016-08-08) Aksu, Filiz; Altunatmaz, Sema Sandıkcı; Issa, Ghassan; Aksu, Harun; Togay, Sine Özmen; Uludağ Üniversitesi/Ziraat Fakültesi/Gıda Mühendisliği Bölümü.; AAC-6337-2021; 36468917400
    Cronobacter spp. involves a group of opportunistic pathogens that cause meningitis in newborns, immunosuppressed individuals with a mortality rate of 50-80%. Seven species like C. sakazakii, C. malonaticus, C. muytjensii, C. turicensis, C. dublinensis, C. universalis, C. condimenti are included in this genus which has been a subject of research especially in the bacteriologic analysis of baby foods. However, since these species were detected also in prepared foodstuffs. The objective of this study was to assert the presence of Cronobacter spp. in foodstuff offered for sale in Turkey. A total of 151 prepared foodstuffs including a variety of spice, flour, instant soup were purchased from different sales points. The presence of Cronobacter spp. were investigated in these samples. Cronobacter suspected isolates which were obtained by microbiological analyses were confirmed by PCR targeted to gyrB gene and were then identified by multiplex PCR. Prevalence of Cronobacter spp was estimated to be 17.88%. Out of 27 Cronobacter spp. isolates obtained, 13(48.1%), 6(22.2%), 5(18.5%), 3(11.1%) belonged to C. sakazakii, C. muytjensii, C. turicensis, C. malonaticus species, respectively. Consequently, the presence of the bacteria in widely consumed foodstuff revealed that Cronobacter spp. is subject to monitoring due to its opportunistic nature in terms of public health concern.