Percorrer por autor "Fernandez-Ruiz, Virginia"
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- Natural sources of food colorants as potential substitutes for artificial additivesPublication . Vega, Erika N.; Ciudad-Mulero, María; Fernandez-Ruiz, Virginia; Barros, Lillian; Morales, PatriciaIn recent years, the demand of healthier food products and products made with natural ingredients has increased overwhelmingly, led by the awareness of human beings of the influence of food on their health, as well as by the evidence of side effects generated by different ingredients such as some additives. This is the case for several artificial colorants, especially azo colorants, which have been related to the development of allergic reactions, attention deficit and hyperactivity disorder. All the above has focused the attention of researchers on obtaining colorants from natural sources that do not present a risk for consumption and, on the contrary, show biological activity. The most representative compounds that present colorant capacity found in nature are anthocyanins, anthraquinones, betalains, carotenoids and chlorophylls. Therefore, the present review summarizes research published in the last 15 years (2008-2023) in different databases (PubMed, Scopus, Web of Science and ScienceDirect) encompassing various natural sources of these colorant compounds, referring to their obtention, identification, some of the efforts made for improvements in their stability and their incorporation in different food matrices. In this way, this review evidences the promising path of development of natural colorants for the replacement of their artificial counterparts.
- Powdered foods: structure, processing, and challenges: a reviewPublication . Ueda, Jonata Massao; Morales, Patricia; Fernandez-Ruiz, Virginia; Ferreira, Anabela; Barros, Lillian; Carocho, Márcio; Heleno, Sandrina A.Powdered foods are easy to store and transport, with a longer shelf life that minimizes potential waste, contributing to sustainable development. Each food category has a unique composition, responsible for its chemical and physical attributes, which directly influences the stability of powdered products. The drying method used is essential to obtain the desired characteristics of the powdered food, and the choice of each technology can provide unique morphological properties regarding size, shape, and density, among other factors. Furthermore, rehydration properties must also be investigated, as they play a fundamental role in the reconstitution of powdered foods, influencing the dispersion and dissolution of the powder in liquids. Therefore, this review provides a comprehensive overview of the powdered food manufacturing process and its advantages. Special attention is given to the desirable properties of food powders, challenges related to stability, powdered food reconstitution properties, and case studies regarding many powdered foods.
- Wild sweet cherry, strawberry and bilberry as underestimated sources of natural colorants and bioactive compounds with functional propertiesPublication . Vega, Erika N.; Garcia-Herrera, Patricia; Ciudad-Mulero, María; Dias, Maria Inês; Matallana-González, Maria Cruz; Camara, Montana; Tardío, Javier; Molina, María; Pinela, José; Pires, Tânia C.S.P.; Barros, Lillian; Fernandez-Ruiz, Virginia; Morales, PatriciaWild edible fruits, neglected by the development of commercial agriculture, have recently aroused as a good source of natural colorants and bioactive compounds. These novel uses could cover the recent demand for healthier foods with functional properties. Prunus avium, Fragaria vesca and Vaccinium myrtillus wild fruits were characterized by individual anthocyanin profile and color CIELAB parameters, as well as phenolic fraction. In addition, some bioactivities were evaluated. In P. avium cyanidin-O-deoxyhexosyl-pentoside was the represen-tative anthocyanin, in F. vesca pelargonidin-3-O-glucoside and in V. myrtillus delphinidin-O-hexoside. The three wild edible fruits showed interesting antioxidant activity especially in OxHLIA assays. V. myrtillus was the fruit with the best results for the bacterial growth inhibition, while F. vesca with better fungal growth inhibition. These results evidenced the richness of these wild fruits in bioactive compounds and pigments with antioxidant ca-pacity, therefore, their potential use as natural colorants for healthier food products design.