Camilya SMANALİYEVA | Kalıypa SALİYEVA | Bakıt BORKOYEV

Article | 2015 | LWT - Food Science and Technology63 ( 1 )

The present work investigated the effect of long-term stack-storage after harvesting on selected chemical and rheological properties of Kyrgyz rice cultivars, Ozgon. The performance indicators of in stack-stored Ozgon rice samples after 4, 6, and 12 days was grain size, grain weight, color, moisture, total starch, amylose, protein, fat and ash contents, and mineral composition as well as the rheological properties of rice flour dough. The change of stored rice is caused by the organic modification of the starch structure, decreasing of moisture as well as proteolysis of proteins in the endosperm. The increase of fat and ash contents . . ., mineral composition, and bio-functional components such as γ-oryzanol indicated the diffusion of micro- and macronutrients from rice bran into the rice endosperm and, thus improvement of the nutritional value of the rice flour. These changes in chemical composition directly influence the physical properties, such as pasting and viscoelastic properties of the rice flour dough as well as the browning of the rice grain. - Keywords: Ozgon rice; Stack-storage; Rice flour; Chemical composition; Rheological propertie More less

Ruslan ADİL AKAY TEGİN

Article | 2020 | LWT - Food Science and Technology133

This study was performed to survey the incidence of Escherichia coli O157:H7 contamination in fish samples which were obtained from different fish farms and retail markets. For this purpose, a total of 140 fish samples were analyzed according to ISO 16654 and screened for virulence genes by mPCR. Antibiotic susceptibility tests were performed with the disc diffusion method and isolates were genotyped by using Enterobacterial repetitive intergenic consensus (ERIC) PCR. Of the 140 analyzed sample, two (1.4? from the same farm, were found to be contaminated with E. coli O157 serogroup, one of which harbored stx1 and the other eaeA gene . . .. E. coli O157 serogroup were resistant to only ciprofloxacin and were not capable of forming biofilm and their ERIC-PCR patterns were different. In conclusion, the existence of pathogenic E. coli O157 serogroup in fish samples might be a significant threat to public health and fish could serve as a vehicle for transmission of these bacteria to consumers in Turkey More less