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Teresa Juan
Unidad de Producción y Sanidad Animal. Centro de Investigación y Tecnología Agroalimentaria de Aragón —Instituto Agroalimentario de Aragón (IA2) (CITA—Zaragoza University), 50059 Zaragoza, Spain

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Journal article
Published: 24 May 2021 in Animals
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A genome-wide association study (GWAS) was performed to identify new single nucleotide polymorphisms (SNPs) and genes associated with mastitis resistance in Assaf sheep by using the Illumina Ovine Infinium® HD SNP BeadChip (680K). In total, 6173 records from 1894 multiparous Assaf ewes with at least three test day records and aged between 2 and 7 years old were used to estimate a corrected phenotype for somatic cell score (SCS). Then, 192 ewes were selected from the top (n = 96) and bottom (n = 96) tails of the corrected SCS phenotype distribution to be used in a GWAS. Although no significant SNPs were found at the genome level, four SNPs (rs419096188, rs415580501, rs410336647, and rs424642424) were significant at the chromosome level (FDR 10%) in two different regions of OAR19. The SNP rs419096188 was located in intron 1 of the NUP210 and close to the HDAC11 genes (61 kb apart), while the other three SNPs were totally linked and located 171 kb apart from the ARPP21 gene. These three genes were related to the immune system response. These results were validated in two SNPs (rs419096188 and rs424642424) in the total population (n = 1894) by Kompetitive Allele-Specific PCR (KASP) genotyping. Furthermore, rs419096188 was also associated with lactose content.

ACS Style

Yasemin Öner; Malena Serrano; Pilar Sarto; Laura Iguácel; María Piquer-Sabanza; Olaia Estrada; Teresa Juan; Jorge Calvo. Genome-Wide Association Studies of Somatic Cell Count in the Assaf Breed. Animals 2021, 11, 1531 .

AMA Style

Yasemin Öner, Malena Serrano, Pilar Sarto, Laura Iguácel, María Piquer-Sabanza, Olaia Estrada, Teresa Juan, Jorge Calvo. Genome-Wide Association Studies of Somatic Cell Count in the Assaf Breed. Animals. 2021; 11 (6):1531.

Chicago/Turabian Style

Yasemin Öner; Malena Serrano; Pilar Sarto; Laura Iguácel; María Piquer-Sabanza; Olaia Estrada; Teresa Juan; Jorge Calvo. 2021. "Genome-Wide Association Studies of Somatic Cell Count in the Assaf Breed." Animals 11, no. 6: 1531.

Journal article
Published: 11 March 2021 in Toxins
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Aflatoxin M1 (AFM1) is a hydroxylated metabolite of aflatoxin B1 (AFB1) that can be excreted in milk of cows after consuming contaminated feed. The aim of this study consisted of a field monitoring to assess the contamination levels of AFB1 in 60 feed samples from two feeding systems for high-yielding dairy cows and of AFM1 in the corresponding raw milk samples. The aflatoxins were analyzed by in-house validated methods based on high-performance liquid chromatography (HPLC) with fluorescence detection. AFB1 was detected in 55% of feed samples (mean 0.61 μg/kg, with 2 samples exceeding the European Union (EU) maximum level set at 5 μg/kg), with greater incidence and concentration in compound feed than in unifeed rations (p < 0.05). AFM1 was detected in 38.3% milk samples (mean 12.6 ng/kg, with 5 samples exceeding the EU maximum level set at 50 ng/kg), with a higher occurrence in milk of cows fed compound feed, as well as in spring milk compared to that produced in winter. The overall transfer ratio of aflatoxins from feed to milk was 3.22%, being higher in cows fed with compound feed and in spring milkings. In a selection of positive matched samples (n = 22), the ratio AFM1/AFB1 exceeded the European Food Safety Authority (EFSA) estimated 6% threshold for high-yielding dairy cows.

ACS Style

Noemi Bervis; Susana Lorán; Teresa Juan; Juan Carramiñana; Antonio Herrera; Agustín Ariño; Marta Herrera. Field Monitoring of Aflatoxins in Feed and Milk of High-Yielding Dairy Cows under Two Feeding Systems. Toxins 2021, 13, 201 .

AMA Style

Noemi Bervis, Susana Lorán, Teresa Juan, Juan Carramiñana, Antonio Herrera, Agustín Ariño, Marta Herrera. Field Monitoring of Aflatoxins in Feed and Milk of High-Yielding Dairy Cows under Two Feeding Systems. Toxins. 2021; 13 (3):201.

Chicago/Turabian Style

Noemi Bervis; Susana Lorán; Teresa Juan; Juan Carramiñana; Antonio Herrera; Agustín Ariño; Marta Herrera. 2021. "Field Monitoring of Aflatoxins in Feed and Milk of High-Yielding Dairy Cows under Two Feeding Systems." Toxins 13, no. 3: 201.

Journal article
Published: 04 February 2021 in Journal of Food Composition and Analysis
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The specific approach of any fruit tree genetic resources preservation program depends undoubtedly on the valorization of the autochthonous germplasm with noticeable traits related to quality and adaptation to harsh climatic conditions. In this context, pomological and biochemical properties of 15 chance seedling almond genotypes, 11 old local Tunisian cultivars and 5 foreign introductions from different origins were studied in order to evaluate possibilities for their commercial and industrial valorization features. Parameters with high discriminating values were more related to kernel weight and width, shelling percentage, oleic and linoleic acids, tocopherols, sugar and protein contents. On the other hand, oil and protein contents were highly variable between genotypes, ranging respectively from 42.6 to 61 % and from 14.5 to 28.3 % of the total kernel dry weight. Main fatty acids ranged between 5.9–7.5 % for palmitic acid, 60.3–76.5 % for oleic acid, and 13.4–28.9 % for linoleic acid. The range of variation of tocopherols, was large for α-tocopherol (208.3–629.2 mg kg−1oil) and for γ-tocopherol (2.8–21.9 mg kg−1oil). Although the physical performances of the kernels for some accessions were in general low, their interesting chemical composition offers the possibility of many alternative uses which could improve their marketable value. In addition, some genotypes were singled out as the most promising for varied commercial finalities. ‘Porto’ and ‘Blanco’ were characterized by high stable total sugar and sucrose contents. Moreover, ‘Blanco’ had the highest α-, γ- and δ-tocopherol contents. ‘Guernghzel’, ‘Ras Bouma’ and ‘Forme en Poire’ were a rich source of protein while ‘Mahsouna’ and ‘Achaak’ may be a potential source for almond oil extraction. All of the understudied ‘K.Friji1’, ‘Bouchouka’ and ‘Forme en Poire’ oils had powerful antioxidant effects due to their high α-tocopherol content. ‘Sahnoun’ and ‘Zahaaf’ presented valuable oil with high oleic acid content. Thus, newly identified genotypes with high performances compared to the introduced cultivars represent a very promising base for breeders to generate new local almond cultivars with high quality kernel and oil that might be used for edible and industrial purposes.

ACS Style

Hassouna Gouta; Ibtissem Laaribi; Elhem Ksia; Teresa Juan; Gloria Estopañan; Pedro Martínez-Gómez. Physical properties, biochemical and antioxidant contents of new promising Tunisian almond genotypes: Traits stability, quality aspects and post-harvest attributes. Journal of Food Composition and Analysis 2021, 98, 103840 .

AMA Style

Hassouna Gouta, Ibtissem Laaribi, Elhem Ksia, Teresa Juan, Gloria Estopañan, Pedro Martínez-Gómez. Physical properties, biochemical and antioxidant contents of new promising Tunisian almond genotypes: Traits stability, quality aspects and post-harvest attributes. Journal of Food Composition and Analysis. 2021; 98 ():103840.

Chicago/Turabian Style

Hassouna Gouta; Ibtissem Laaribi; Elhem Ksia; Teresa Juan; Gloria Estopañan; Pedro Martínez-Gómez. 2021. "Physical properties, biochemical and antioxidant contents of new promising Tunisian almond genotypes: Traits stability, quality aspects and post-harvest attributes." Journal of Food Composition and Analysis 98, no. : 103840.

Journal article
Published: 17 March 2019 in Foods
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The salt distribution process in artisanal sheep cheese with an innovative shape of eight lobes was investigated. The cheese was subjected to two brining conditions: 24 h with brine at 16°Baumé and 12 h at 22°Baumé. The chemical composition (pH, water activity, dry matter, fat, and protein content), proteolysis (nitrogen fractions and free amino acids), and lipolysis (free fatty acids) were evaluated in two sampling zones (internal and external) at 1, 15, 30, 60, 90, 120, 180, and 240 days of ripening. The whole cheese reached a homogeneous salt distribution at 180 days of ripening. Brining conditions did not have an influence on the rate of salt penetration, but on the final sodium chloride (NaCl) content. Cheese with higher salt content (3.0%) showed increased proteolysis and lipolysis as compared to cheese with lower salt content (2.2%). Proteolysis index and total free fatty acids did not differ significantly (p > 0.05) between internal and external zones of cheese. It is suggested that producers start marketing this artisanal cheese at 6 months of ripening, when it has uniform composition and salt distribution.

ACS Style

Olaia Estrada; Agustín Ariño; Teresa Juan. Salt Distribution in Raw Sheep Milk Cheese during Ripening and the Effect on Proteolysis and Lipolysis. Foods 2019, 8, 100 .

AMA Style

Olaia Estrada, Agustín Ariño, Teresa Juan. Salt Distribution in Raw Sheep Milk Cheese during Ripening and the Effect on Proteolysis and Lipolysis. Foods. 2019; 8 (3):100.

Chicago/Turabian Style

Olaia Estrada; Agustín Ariño; Teresa Juan. 2019. "Salt Distribution in Raw Sheep Milk Cheese during Ripening and the Effect on Proteolysis and Lipolysis." Foods 8, no. 3: 100.

Journal article
Published: 05 March 2019 in Toxins
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Aflatoxins are carcinogenic to humans and deoxynivalenol causes digestive disorders, and both mycotoxins occur frequently in cereal-based foods. The purpose of this study was to investigate the occurrence and levels of aflatoxins (B1, B2, G1 and G2) and deoxynivalenol (DON) in cereal-based baby foods as well as to calculate the estimated daily intakes (EDI) in different stages of infancy. Sixty samples of infant cereals (wheat-, corn-, rice-, oat-, and mixed grain-based) were collected during a 2-year period and analyzed by validated methods. Aflatoxins were detected in 12 samples (20%), six of which exceeded the EU maximum level for aflatoxin B1 set at 0.10 µg/kg. Deoxynivalenol appeared in 20% of baby food samples, with one sample exceeding the EU maximum level established at 200 µg/kg. There were no significant differences between gluten-free products for babies aged 4⁻6 months and multi-cereal products for infants aged 7⁻12 months, nor between whole-grain-based and refined ingredients. However, baby food products of organic origin showed significantly higher levels of deoxynivalenol than conventional ones (p < 0.05). It is proposed for the health protection of infants and young children, a vulnerable group, to establish the lowest maximum level for the sum of aflatoxins (B1, B2, G1 and G2) in baby food.

ACS Style

Marta Herrera; Noemi Bervis; Juan José Carramiñana; Teresa Juan; Antonio Herrera; Agustín Ariño; Susana Lorán. Occurrence and Exposure Assessment of Aflatoxins and Deoxynivalenol in Cereal-Based Baby Foods for Infants. Toxins 2019, 11, 150 .

AMA Style

Marta Herrera, Noemi Bervis, Juan José Carramiñana, Teresa Juan, Antonio Herrera, Agustín Ariño, Susana Lorán. Occurrence and Exposure Assessment of Aflatoxins and Deoxynivalenol in Cereal-Based Baby Foods for Infants. Toxins. 2019; 11 (3):150.

Chicago/Turabian Style

Marta Herrera; Noemi Bervis; Juan José Carramiñana; Teresa Juan; Antonio Herrera; Agustín Ariño; Susana Lorán. 2019. "Occurrence and Exposure Assessment of Aflatoxins and Deoxynivalenol in Cereal-Based Baby Foods for Infants." Toxins 11, no. 3: 150.

Journal article
Published: 01 August 2015 in Food Control
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Direct competitive and sandwich ELISA formats developed to determine Ara h1 and Ara h2 proteins were applied in the detection of peanut in model biscuits prepared with a commercial peanut butter as ingredient. The sandwich format for Ara h2 protein could detect the addition of 2.5% peanut butter, whereas the same format for Ara h1 could not detect 5% added peanut. Direct competitive formats for Ara h1 and Ara h2 proteins could detect the addition of 1% and 0.05% peanut butter, respectively. Therefore, competitive format for Ara h2 was selected to be evaluated by four laboratories, obtaining adequate results in term of repeatability and reproducibility. Results obtained indicate that processing decreased the level of extracted proteins and underestimated the amount of Ara h1 and Ara h2 proteins, the effect being more severe for Ara h1. The selection of the target protein and the ELISA format applied greatly influence the detection of peanut in processed foods

ACS Style

M. Montserrat; D. Sanz; T. Juan; A. Herrero; L. Sánchez; M. Calvo; María D. Pérez. Detection of peanut (Arachis hypogaea) allergens in processed foods by immunoassay: Influence of selected target protein and ELISA format applied. Food Control 2015, 54, 300 -307.

AMA Style

M. Montserrat, D. Sanz, T. Juan, A. Herrero, L. Sánchez, M. Calvo, María D. Pérez. Detection of peanut (Arachis hypogaea) allergens in processed foods by immunoassay: Influence of selected target protein and ELISA format applied. Food Control. 2015; 54 ():300-307.

Chicago/Turabian Style

M. Montserrat; D. Sanz; T. Juan; A. Herrero; L. Sánchez; M. Calvo; María D. Pérez. 2015. "Detection of peanut (Arachis hypogaea) allergens in processed foods by immunoassay: Influence of selected target protein and ELISA format applied." Food Control 54, no. : 300-307.