Akademik Çıktılar (WoS, Scopus, TR Dizin, PubMed)

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The Effect of Whey Protein Concentrate Based Edible Coatings Containing Natamycin Orlysozyme-Xanthan Conjugate on Microbial Properties of Ultrafiltrated White Cheese
(Tarbiat Modares University, 2019) Jalilzadeh, A.; Hesari, J.; Peighambardoust, S.H.; Jodeiri, H.; Javidipour, I.
In this research, the effects of whey protein concentrate based edible coatings containing different concentrations of natamycin and lysozyme–xanthan gum conjugate were investigated. For this purpose, Escherichia coli O157:H7 (as an indicator for gram negative bacteria and also resistant to commercial pasteurization), Staphylococcus aureus (as an indicator of gram-positive bacteria), and Penicillium chrysogenum were inoculated to ultrafiltrated white cheese surface and the microbial properties of cheese samples were evaluated during 28 days storing.The results showed that all coated treatments significantly reduced the growth of Penicillium chrysogenum. Natamycin-containing coatings have been more effective in reducing the mold population than lysozyme-xanthan-containing coatings. Coated samples containing 600 ppm lysozyme-xanthan reduced E. coli O157: H7 growth 2.09 log compared to control samples.Also, the growth rates of Staphylococcus aureus were lower in all samples treated with lysozyme-xanthan than control sample. The lowest growth rate of Staphylococcus aureus was observed in the coated sample containing 600 ppm lysozyme-xanthan on 28th day, with a microbial population of 2.60 logarithms. Unlike other treatments, the growth rate of Staphylococcus aureus in the sample coated containing 600 ppm lysozyme-xanthan was descending over 28 days.The results of this study showed that whey protein based edible coating can be used as a carrier of natamycin and lysozyme-xanthan in optimal concentration, for increasing the microbial quality of UF cheese. © 2019 Tarbiat Modares University. All Rights Reserved.
The Sublethal Effects of Thiamethoxam-Lambda Cyhalothrin on the Population Growth Performance of the Greenhouse Whitefly, Trialeurodes Vaporariorum, and Its Parasitoid, Encarsia formosa, Under Laboratory Conditions
(Entomological Society of Iran (ESI), 2025) Dadras, Sevda; Mehrkhou, Fariba; Atlihan, Remzi; Fourouzan, Maryam
The greenhouse whitefly, Trialeurodes vaporariorum Westwood (Hemiptera: Aleyrodidae), is one of the most important pests of vegetables and ornamental plants. In this research, the effects of sub-lethal concentration (LC30) of thiamethoxam-lambda cyhalothrin (TLC) on the biological properties, life table parameters and population projection of T. vaporarium and its parasitoid, Encarsia formosa, Gahan were studied at controlled conditions [25 ±2 ℃, R.H. 60 ±10 % and a photoperiod of 16:8 h (L:D)]. Bioassays were conducted by dipping tomato leaves containing third-instar nymphs of the greenhouse whitefly in the obtained LC30 concentration of TLC. The life table data were analyzed using the computer program, TWOSEX–MSChart, based on the age-stage, two-sex life table theory. The results showed that the sublethal concentration of the above-mentioned insecticide had an impact on the population growth of greenhouse whiteflies by shortening their development time and adult lifespan as well reducing their fecundity. The LC30 concentration of TLC had also negative effects on the life history and life table parameters of E. formosa. The results illustrated that the sublethal concentration of TLC resulted in prolonged developmental time, decreased adult longevity, survival rate, and population growth parameters of E. formosa. The population projection results were in accordance with the population growth parameters of the greenhouse whitefly and E. formosa. We concluded that TLC should not be used in integrated pest management programs where E. formosa exists. © 2025 Elsevier B.V., All rights reserved.

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