Salma Lasram
University of Lleida
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Publication
Featured researches published by Salma Lasram.
Food and Chemical Toxicology | 2012
Souheib Oueslati; Roberto Romero-González; Salma Lasram; Antonia Garrido Frenich; José Luis Martínez Vidal
The aim of the study was the use of a fast and simple method using ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) for the simultaneous determination of aflatoxins (AFB1, AFB2, AFG1 and AFG2), ochratoxin A (OTA), fumonisins (FB1 and FB2), deoxynivalenol (DON), T2 and HT2 toxins in 58 samples of raw wheat (n = 34), barley (n = 5), sorghum (n = 3), processed wheat (n = 13) and breakfast cereals (n = 3) from Tunisian markets. The frequency of contamination of total samples with the analyzed mycotoxins was 50%. AFG2 was the most frequently detected in 11 samples (4 wheat, 4 barley and 3 sorghum) and it was detected at 5.2-52.4 μg/kg. HT2 toxin contaminated seven samples (4 wheat and 3 barley) and it was detected at 5.0-11.1 μg/kg. FB2 was detected in one wheat, sorghum, semolina and breakfast cereal samples at 5.0-61.5 μg/kg. FB1 was detected in three samples (2 sorghum and one barley) at 6.4-120 μg/kg. AFB1 was only found in two sorghum samples at 14 and 79.9 μg/kg. OTA was detected in one sorghum sample at concentrations below limit of quantification (5 μg/kg). The analytical results also showed that all the analyzed samples were not contaminated with DON, AFG1, AFB2 and T2 toxin.
Journal of Food Science | 2010
Salma Lasram; Souheib Oueslati; Ana Valero; Sonia Marín; Abdelwahed Ghorbel; Vicente Sanchis
This study investigated the effects of temperature (15 to 37 degrees C) and water activity (0.90 to 0.99) on the growth and production of ochratoxin A (OTA) by Aspergillus carbonarius cultured on synthetic nutrient medium (SNM) after 5 and 10 d of incubation. Total of 8 ochratoxigenic A. carbonarius, isolated from vineyards located in different regions of Tunisia, were used. Growth data were modeled by the flexible model of Baranyi and growth rates at each set of conditions were obtained. For both growth and OTA production, optimal water activity was 0.99; however, optimal temperature varied. The optimal temperature for growth was 30 degrees C. At 37 degrees C, the growth rate decreased significantly (P < 0.05). Maximum toxin production occurred at temperatures in the range of 15 to 25 degrees C with the optimum one depending on the isolate tested. Significant amounts of OTA were produced after only 5 d of incubation. Our results showed that A. carbonarius isolated from Tunisian grapes behave as those from European and Australian grapes, as reported in the literature, although some differences in trends for growth and OTA production were observed.
International Journal of Food Microbiology | 2010
Souheib Oueslati; Salma Lasram; Antonio J. Ramos; Sonia Marín; Ahmed Mliki; Vicente Sanchis; Abdelwahed Ghorbel
The effect of three alternating temperatures cycles (20/30, 20/37 and 25/42 degrees C) and photoperiod on growth and Ochratoxin A (OTA) production of six isolates of Aspergillus carbonarius on synthetic nutrient medium were investigated. The different temperature regimes affected significantly both the mycelial growth and the OTA production. The best growth and OTA production were recorded at 20/30 degrees C. The isolates from the region of Baddar produced the highest OTA yields. A 24 h light cycle generally enhanced the growth of A. carbonarius. Growth rates cycles of 11 h/13 h light/darkness and 24 h darkness were often similar for individual isolates, such conditions enhanced OTA production in two of the six isolates tested.
Journal of Food Science | 2006
Sonia Marín; Neus Bellí; Salma Lasram; S. Chebil; Antonio J. Ramos; Abdelwahed Ghorbel; V. Sanchis
International Journal of Food Microbiology | 2007
Salma Lasram; Neus Bellí; Samir Chebil; Zghonda Nahla; Mliki Ahmed; Vicente Sanchis; Abdelwahed Ghorbel
Food Control | 2012
Salma Lasram; Souheib Oueslati; Ahmed Mliki; Abdelwahed Ghorbel; Phillipe Silar; Samir Chebil
Journal of the Science of Food and Agriculture | 2008
Salma Lasram; Arij Mani; Chiraz Zaied; Samir Chebil; Salwa Abid; Hassen Bacha; Ahmed Mliki; Abdelwahed Ghorbel
Journal of Stored Products Research | 2016
Salma Lasram; Zohra Hamdi; Synda Chenenaoui; Ahmed Mliki; Abdelwahed Ghorbel
Food and Bioprocess Technology | 2017
Hassène Zemni; Arwa Sghaier; Ramla Khiari; Samir Chebil; Hanen Ben Ismail; Rihab Nefzaoui; Zohra Hamdi; Salma Lasram
Journal of Phytopathology | 2013
Salma Lasram; Souheib Oueslati; Hatem Ben Jouira; Samir Chebil; Ahmed Mliki; Abdelwahed Ghorbel