تصفح حسب المؤلف "Al-Thani, Roda"
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Application of scanning electron microscopy and MALDI-TOF MS in the exploration of the parasporal insecticidal crystals of Bacillus thuringiensis strains isolated from Qatar soil
Al-Thani, A.; Al-Thani, Aldana; Ashfaq, Mohammad Yousaf; Al-Thani, Roda; Hassan, Zahoor Ul; Jaoua, Samir... more authors ... less authors ( Elsevier Ltd , 2022 , Article)Bacillus thuringiensis (Bt) plays an important role in health and agriculture due to its insecticidal activities. In this study, six Bt strains isolated from Qatar soil were used to explore their crystals morphologies and ... -
Bacillus thuringiensis strain QBT220 pBtoxis plasmid structural instability enhances δ-endotoxins synthesis and bioinsecticidal activity
Nair, K.; Nair, Kavita; Al-Thani, Roda; Jaoua, Samir ( Academic Press , 2021 , Article)Bacillus thuringiensis subsp. israelensis (Bti) spherical parasporal crystal contains several insecticidal proteins used as environmentally safe alternative to toxic chemical pesticides. The exploration of a Bti strain ... -
Characterization of tunisian Bacillus thuringiensis strains with abundance of kurstaki subspecies harbouring insecticidal activities against the lepidopteran insect ephestia kuehniella
Saadaoui, Imen; Al-Thani, Roda; Al-Saadi, Fatma; Hassan, Najeh Belguith-Ben; Abdelkefi-Mesrati, Lobna; Schultz, Patrick; Rouis, Souad; Jaoua, Samir... more authors ... less authors ( Springer US , 2010 , Article)The study of 257 crystal-producing Bacillus thuringiensis isolates from bioinsecticide free soil samples collected from different sites in Tunisia, was performed by PCR amplification, using six primer pairs specific for ... -
Fungal and aflatoxin contamination of marketed spices
Hammami, Walid; Fiori, Stefano; Al Thani, Roda; Kali, Najet Ali; Balmas, Virgilio; Migheli, Quirico; Jaoua, Samir... more authors ... less authors ( Elsevier Ltd , 2014 , Article)Fourteen spice samples were collected from local markets in Doha, Qatar, during 2012, and were surveyed for the presence of potentially harmful mycoflora and for contamination with aflatoxins B1, B2, G1, and G2 by ... -
Occurrence of Mycotoxins and Toxigenic Fungi in Cereals and Application of Yeast Volatiles for Their Biological Control
Alkuwari, A.; Alkuwari, Asma; Hassan, Zahoor Ul; Zeidan, Randa; Al-Thani, Roda; Jaoua, Samir... more authors ... less authors ( MDPI , 2022 , Article)Fungal infections in cereals lead to huge economic losses in the food and agriculture industries. This study was designed to investigate the occurrence of toxigenic fungi and their mycotoxins in marketed cereals and explore ... -
Patulin and patulin producing Penicillium spp. occurrence in apples and apple-based products including baby food
Hammami, Walid; Al Thani, Roda; Fiori, Stefano; Al-Meer, Saeed; Atia, Fathy Atia; Rabah, Duha; Migheli, Quirico; Jaoua, Samir... more authors ... less authors ( The Journal of Infection in Developing Countries , 2017 , Article)Introduction: Patulin has raised the international attention because of its health risk. In fact, it has mutagenic, neurotoxic, immunotoxic, genotoxic and gastrointestinal effects in animals. In the present work, patulin ...