Arroqui Vidaurreta, Cristina
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Arroqui Vidaurreta
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Cristina
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Agronomía, Biotecnología y Alimentación
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IS-FOOD. Research Institute on Innovation & Sustainable Development in Food Chain
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Publication Open Access Mild high hydrostatic pressure processing: effects on techno-functional properties and allergenicity of ovalbumin(Elsevier, 2024) Horvitz Szoichet, Sandra Susana; Arroqui Vidaurreta, Cristina; Virseda Chamorro, Paloma; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Universidad Pública de Navarra / Nafarroako Unibertsitate PublikoaThe effects of mild (250–350 MPa) high hydrostatic pressures (HHP) on the technological properties of ovalbumin were studied. Thermal gels were prepared using HHP-treated ovalbumin. Their characteristics and the efficacy of HHP processing to inhibit allergenicity were evaluated. The samples treated at 250 MPa/15 min, 350 MPa/10 min and 350 MPa/15 min showed the best results for solubility and water and oil absorption capacities, respectively. Regardless of treatment duration, foaming capacity increased with pressure. The foam stability only increased significantly in the samples subjected to 350 MPa for 10 and 15 min. On the contrary, the mildest treatment yielded the highest emulsifying activity index and emulsion stability. Improved gel strength and water holding capacity were observed, particularly under 300 MPa, resulting in a maximum inhibition of allergenicity (46.75%).Publication Open Access Effect of high-pressure processing pretreatment on the textural properties of cooked Nuovo Maratelli rice(MDPI, 2024-12-15) Arroqui Vidaurreta, Cristina; Horvitz Szoichet, Sandra Susana; Noriega Domínguez, María José; Fernández Pan, Idoya; Ibáñez Moya, Francisco C.; Virseda Chamorro, Paloma; Agronomía, Biotecnología y Alimentación; Agronomia, Bioteknologia eta Elikadura; Institute on Innovation and Sustainable Development in Food Chain - ISFOODNuovo Maratelli, a japonica rice with an intermediate amylose content, is suitable for paella (a traditional Spanish dish) due to its ability to withstand cooking and absorb flavors. In this study, high-pressure processing (HPP) at 400 and 600 MPa (10 min) was used as a pretreatment to improve the properties of rice cooked by either boiling or microwaving. The microstructure and pasting properties of unpressurized and pressurized rice were examined. Also, the cooking time and cooking kinetics were determined for each cooking method. Overall, the pasting properties of the rice were not impacted by the HPP treatments, but the typical polyhedral form of the rice starch granules was lost, especially at 600 MPa. Cooking times were reduced from 14 and 10 min for unpressurized samples to 12 and 8 min (400 MPa) and 8 and 6 min (600 MPa) for boiling- and microwave-cooked rice, respectively. The rice pretreated at 400 MPa (10 min) and microwaved (8 min) had lower hardness and adhesiveness, which was linked to the release of amylose during cooking. In summary, HPP could be an effective pretreatment for the improvement of the cooking and textural properties of Nuovo Maratelli rice, particularly when cooked by microwaving.