Person: Fernández Pan, Idoya
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Fernández Pan
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Idoya
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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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0000-0001-5804-9104
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8261
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Publication Open Access Stabilization and valorization of tomato byproduct: a case study for the bakery industry(Wiley, 2023) Fernández Pan, Idoya; Ibáñez Moya, Francisco C.; Virseda Chamorro, Paloma; Arozarena Martinicorena, Íñigo; Beriain Apesteguía, María José; Institute on Innovation and Sustainable Development in Food Chain - ISFOODWorldwide, tomato production is estimated at 180 million tons per year, which generates a byproduct with highly variable characteristics and volumes. According to the principles of the circular economy, a semi-industrial method for the integral use of the tomato byproduct as an ingredient in the bakery industry is proposed. Using two different dehydration processes (convection or freeze-drying), a tomato byproduct formed by peels and seeds was stabilized and ground into flours that were used as ingredients in focaccia-type flatbread elaboration through a wheat flour partial substitution trial (from 0% to 20% w/w). Based on the kinetics of convection drying and remaining lycopene content results, conditioning of the byproduct at 60ºC was proposed. The higher the percentage of substitution, the greater the firmness of the flatbread. However, the cutting force was maximum with 15% replacement. The flatbreads with 5%- 15% replacement were rated positively according to consumer acceptance studies. Substitution of up to 15% tomato byproduct is suggested for the formulation, as the higher the byproduct flour content, the lower the volume, the higher the firmness, and reddish-brown tones. Realistically, for the industrial setting, this processing proposal reached the whole food chain, from field to fork.Publication Open Access Effect of the presence of ethyl lauroyl arginate on the technological properties of edible fish gelatin films(Wiley, 2019) Otero Tuárez, Víctor Oswaldo; Fernández Pan, Idoya; Maté Caballero, Juan Ignacio; Agronomia, Bioteknologia eta Elikadura; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Agronomía, Biotecnología y AlimentaciónPhysical, chemical and antimicrobial properties of fish gelatin films with different 19 concentrations of ethyl lauroyl arginate (LAE) were studied. Optical properties 20 of film-forming solution did not vary with increased LAE content. However, pH 21 and surface tension increased. The incorporation of LAE into the formulation 22 increased moisture and solubility of the films. In addition, the presence of LAE 23 affected mechanical properties, making films stronger and more flexible; it had 24 no effect on water vapor permeability. Finally, films with LAE significantly 25 increased antimicrobial properties against Listeria innocua, Shewanella 26 putrefaciens and Pseudomonas fluorescens, but not against Aeromonas 27 hydrophila. These antimicrobial films could be a used as an alternative 28 technology for of fresh products.Publication Open Access Extra-virgin olive oil enriched with lycopene: from industrial tomato by-products to consumer(Wiley, 2024) Fernández Pan, Idoya; Horvitz Szoichet, Sandra Susana; Ibáñez Moya, Francisco C.; Arroqui Vidaurreta, Cristina; Beriain Apesteguía, María José; Virseda Chamorro, Paloma; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Universidad Pública de Navarra / Nafarroako Unibertsitate PublikoaLycopene is usually extracted from the by-product of the tomato industry using organic solvents (OS) in combination with a physical technique. An emerging physical technique is high-pressure processing (HPP). This study aims to find a method by applying a green solvent (edible vegetable oils) in an HPP-assisted solid-liquid extraction. Three dosages of tomato by-product (10%, 20%, and 40%, w/v) were tested using OS, sunflower oil (RSO), and extra-virgin olive oil (EVOO). Lycopene recovery increased with the ratio of by-product to oil, particularly when using EVOO. In another stage of the study, consumers evaluated EVOO that contained two doses of tomato by-product (10% and 20%, w/v). Consumers preferred the EVOO from 10% tomato by-product ratio over that with 20%. Additionally, 83.8% of consumers stated that enriched oil could be deemed beneficial for health. The proposed method considers the fundamental principles of the circular economy and practical industrial scenario to recover lycopene from tomato by-product.Publication Open Access High hydrostatic pressure processing to replace texturizing agents on a plant product intended for altered deglutition: a concept proof(Elsevier, 2023) Fernández Pan, Idoya; Merino Antón, Gorka; Virseda Chamorro, Paloma; Beriain Apesteguía, María José; Ibáñez Moya, Francisco C.; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Universidad Pública de Navarra / Nafarroako Unibertsitate PublikoaHigh hydrostatic pressure processing (HPP) can cause changes in food texture. These changes can be beneficial when developing food with strict texture specifications as it is the case of food targeted to people with altered deglutition (AD) issues. The aim of the present research was to evaluate the HPP potential as an alternative to the use of texturizing agents currently added to AD-targeted food products. First, formulation and experimental conditions of treatments were established, and 2 types of chickpea protein pur´ees, one containing corn starch (PS) and the other chicory inulin (PI), were developed. Second, the pur´ees were, in one case HPP-treated (300–400 MPa; 3–9 min) and in the other texturized with agar-agar and xanthan gum. Overall, HPP did not significantly affect the proximate composition of the purées and improved their microbiological quality, and, most importantly, they caused beneficial texture changes on both PS and PI purées. In addition, HPP-treatments conferred similar instrumental texture values to texturized purées. These texture values come within the given specific range data supplied by the literature for AD suitability. The present study provides the basis for applying HPP in the development of texturizer-free AD-oriented purées.Publication Open Access Effect of antimicrobial edible coatings and modified atmosphere packaging on the microbiological quality of cold stored hake (Merluccius merluccius) fillets(Hindawi / Wiley, 2018) Carrión Granda, Ximena; Fernández Pan, Idoya; Rovira, Jordi; Maté Caballero, Juan Ignacio; Tecnología de Alimentos; Elikagaien TeknologiaThe effect of whey protein isolate (WPI) coatings incorporated with essential oils (EOs) and combined with modified atmosphere packaging (MAP) on the microbiological quality of fresh hake fillets was evaluated. Fresh hake fillets were coated with different formulations of WPI-EO coatings and packaged under air and MAP conditions (50% CO2/45% N2/5% O2).When WPI-enriched films were applied with or without the presence of MAP over hake fillets with a high initial microbial population, a limited but significant effect on the microbial growth was observed. This effect was more intense on Enterobacteriaceae and H2S-producing bacteria. When hake fillets with lower initial microbial counts were treated, a more intense antimicrobial effect was observed and a synergistic effect between WPI-EO coatings and MAP was detected. A significant extension of the lag phase and reduction, primarily, on the total viable counts and H2S-producing bacteria, was detected, doubling the shelf-life of hake fillets compared with control samples.The initial microbial load of the samples is a key factor influencing the effectiveness of the treatment.The obtained results demonstrated the effectiveness of this combined strategy as a promising alternative for enhancing the microbial quality of fish products during storage at refrigeration temperatures.Publication Open Access Revalorisation of broccoli crop surpluses and field residues: novel ingredients for food industry uses(Springer, 2023) Villaño Valencia, Débora; Fernández Pan, Idoya; Arozarena Martinicorena, Íñigo; Ibáñez Moya, Francisco C.; Virseda Chamorro, Paloma; Beriain Apesteguía, María José; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Universidad Pública de Navarra / Nafarroako Unibertsitate PublikoaResearch on the management of broccoli crop residues and surpluses is critical for improving agricultural practices, optimizing food industrial manufacture, and contributing to better human nutrition. The objective of this study was to obtain novel ingredients based on these residues and surpluses for a wide range of applications in the food industry. The efect of air-drying (60 °C or 80 °C) applied to feld residues (broccoli stalks), mimicking industrial conditions, was compared with dehydration by freeze-drying applied to these same feld residues and to crop surpluses (broccoli whole plant). Thus, diferent broccoli fours were obtained and characterised for technological and biological properties including colour, antioxidant activity, nutrients, total polyphenol content, and content of glucosinolates. Flours from feld residues showed high levels of dietary fbre (≈22% dry weight). Broccoli crop surpluses fours had relevant contents of glucosinolates (≈13 mg/g dry weight). Therefore, within the framework of the circular economy, these fours are proposed to revalorise the two main broccoli crop discarded fractions. Such fours could be used in a realistic and simple way by the agri-food industries interested in the development of healthy and conscience foodstufs, in a cost-efcient manner.Publication Open Access Combined effect of antimicrobial edible coatings with reduction of initial microbial load on the shelf-life of fresh hake (Merluccius merluccius) medallions(Wiley, 2019) Otero Tuárez, Víctor Oswaldo; Carrión Granda, Ximena; Fernández Pan, Idoya; Fernández García, Teresa; Maté Caballero, Juan Ignacio; Agronomía, Biotecnología y Alimentación; Agronomia, Bioteknologia eta ElikaduraTwo distinct strategies were combined to preserve fresh fish (Merluccius merluccius) under refrigeration at 4 °C for 12 days: (i) the application of an antimicrobial edible coating enriched with oregano essential oil (OEO) or carvacrol (CV) and (ii) the reduction of initial microbial load by good handling practise and the use of sodium hypochlorite (NaOCl). The action of antimicrobial coatings alone retarded the growth of Enterobacteriaceae, lactic acid bacteria (LAB) and H2S producing bacteria on fish samples. The reduction of initial microbial load by itself only affected the evolution of LAB, but not the rest of the bacterial groups. When using both techniques combined, edible antimicrobial coatings were significantly more effective with additional and significant delays in the growth of mesophilic, psychrotrophic and Pseudomonas bacteria. Thus, the use of both strategies combined resulted in a reduction of the counts of all bacterial groups after 12 days of storage which ranged from 1.5 log and 8 log, in Pseudomonas and H2S producing bacteria, respectively. Moreover, no significant differences were observed when comparing the microbiological evolution of samples treated with OEO compared to those only treated with CV.