Mariana Coelho Santos

Mrs. Mariana Coelho Santos

orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 May 2022 in Foods
Verified
Journal Article
Open access
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Mariana Coelho SantosMariana Coelho Santos
Mariana Coelho Santos
FMFilipa Nunes Matias
Filipa Nunes Matias
ILIsabel Loureiro
Isabel Loureiro
Ana RitoAna Rito
Ana Rito
ICIsabel Castanheira
Isabel Castanheira
Ricardo AssunçãoRicardo Assunção
Ricardo Assunção
Proper nutrition in infancy and early childhood is crucial to ensuring optimal child development, growth, and better health outcomes later in life. The nutrient profile model proposed by WHO/Europe aims to assess the nutritional quality and promotional/marketing aspects of commercial baby foods aimed at children up to 36 months. We used commercial data from 191 baby foods collected between March 2021 and July 2021, from eight supermarket chains in the Lisbon Metropolitan area. According to the model specifications and the NOVA classification system, we assessed the nutritional quality and promotion aspects and the degree of processing, respectively. The presence of at least one sugar-contributing ingredient was found in 34.0% of the products; 13.9% of products listed sugars and 15.0% listed fruit juices or concentrates as an ingredient. The claim “No added sugar” was present in 69.6% of products. Only 35.1% of products comply with all the nutritional requirements of the model. Concerning processing classification, 61.8% of products were ultra-processed, and about 57.0% were indicated for children < 12 months. These findings reinforce the importance of implementing measures to ensure that commercial foods for infants are marketed appropriately and to promote foods with a lower degree of processing.

27 October 2021 in Foods
Verified
Journal Article
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SSSofia Sousa
Sofia Sousa
IMInês Morais
Inês Morais
GAGabriela Albuquerque
Gabriela Albuquerque
MGMarcello Gelormini
Marcello Gelormini
Mariana Coelho SantosMariana Coelho Santos
Mariana Coelho Santos
PPPatrícia Padrão
Patrícia Padrão
Street food (SF) and takeaway food (TAF) are important sources of out-of-home meals in urban Bosnia and Herzegovina, where diet-related non-communicable diseases are growing rapidly. This study aimed to characterise SF and TAF purchased in urban areas of Bosnia and Herzegovina, regarding customers’ characteristics and the nutritional composition of the foods and beverages. A cross-sectional study was conducted in Sarajevo and Banja Luka in 2017. SF (n = 194) and TAF vending sites (n = 154) were selected through random and systematic sampling. Data on the food items purchased and customers’ characteristics were collected by direct observation. Nutritional composition was estimated using data from chemical analyses of the foods most commonly available. Two-thirds of the customers observed (n = 755) were aged ≥35 years, half were women and 27.7% were overweight/obese. A total of 929 food items were purchased. The most commonly bought SFs were confectionery (30.5%), water (27.9%) and soft drinks/juices (22.2%). TAF customers purchased mostly savoury pastries (39.8%), breads (27.1%) and main dishes (21.4%). Almost half of customers purchased industrial food (i.e., pre-packaged foods and beverages produced by the food industry). The purchases presented median contents of 18.7 g of fat (39.6% saturated, 32.3% monounsaturated, 22.1% polyunsaturated, 1.5% trans), 838 mg of sodium and 285 mg of potassium. Saturated-fat contribution was higher in SF purchases (60.4% vs. 30.2%, p < 0.001), whereas TAF purchases presented higher trans-fat proportion (1.8% vs. 0.6%, p < 0.001), sodium (1241 vs. 89 mg, p < 0.001) and sodium-potassium ratio (6.1 vs. 0.6, p < 0.001). Generally, SF and TAF bought in Sarajevo and Banja Luka were rich in saturated and trans fatty-acids and sodium, and poor in potassium. Nutrition policies promoting use of healthier fats and salt reduction in SF and TAF may contribute to the prevention of diet-related diseases in these settings.

30 July 2021 in Foods
Verified
Journal Article
Open access
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Mariana Coelho SantosMariana Coelho Santos
Mariana Coelho Santos
FMFilipa Nunes Matias
Filipa Nunes Matias
Ana RitoAna Rito
Ana Rito
ICIsabel Castanheira
Isabel Castanheira
DTDuarte Torres
Duarte Torres
Ricardo AssunçãoRicardo Assunção
Ricardo Assunção
Ready-to-eat cereals (RTECs) have become a popular breakfast option claiming to provide important nutrients to children’s diets, despite being a source of excess sugar and, therefore, a health concern. Thus, food reformulation constitutes an important public health strategy that could benefit from inputs provided by nutrient profiling. This study aimed to assess the adequacy of the RTECs for children available in Portuguese supermarkets, applying three nutrient profile models (NPMs)—the nutrient profile model of the World Health Organization’s Regional Office for Europe (WHO-EURO), the profile of the private-sector EU Pledge (EU-Pledge), and the national model developed by the Directorate-General of Health (NPM-PT)—in order to explore the potential for reformulation of the RTECs identified as not adequate and evaluate the impact of RTECs’ reformulation on the nutritional quality of Portuguese children’s diets. In total, 78 RTECs intended for children were assessed and two scenarios—current (not considering reformulation) and alternative (considering reformulation to accomplish the nutrient profile requirements)—were considered to assess the impact of reformulation on nutritional quality. Across all RTECs, only 5.1% could be promoted to children according to the considered NPMs. The most common nutrients requiring reformulation were sugar, saturated fatty acids (SFA), salt, and dietary fiber. The scenarios of reformulation considered could reduce the RTECs average content of total sugars, SFA, and salt by 43%, 8.7%, and 1.1%, respectively, and dietary fiber intake could be increased by 34%. Thus, these results support policies to implement reformulation strategies for developing healthier food products to be promoted to children.

13 April 2023 in Journal of Food Composition and Analysis
Verified
Journal Article
Closed access
Mariana Coelho SantosMariana Coelho Santos
Mariana Coelho Santos
FMFilipa Nunes Matias
Filipa Nunes Matias
TFTânia Fontes
Tânia Fontes
ABAna Cristina Bento
Ana Cristina Bento
MPMaria João Pires
Maria João Pires
RARicardo Assunção
Ricardo Assunção

8 February 2025 in Foods
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Journal Article
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ANAna Claudia Nascimento
Ana Claudia Nascimento
Carla MottaCarla Motta
Carla Motta
ARAndreia Rego
Andreia Rego
IDInês Delgado
Inês Delgado
SSSusana Santiago
Susana Santiago
ICIsabel Castanheira
Isabel Castanheira
Pseudocereals have gained attention due to their adaptability to different climates, high nutritional value, and suitability for gluten-free and plant-based diets. However, a challenge lies in the necessary adaptations in the diet pathways, mainly due to the lack of matrix-matching metrological tools. To address this problem, we developed a classification system to support laboratory decisions without shaped Proficiency Testing (PT) or Certified/Standard References Material. This system evaluates method performance through limit of detection (LOD), maximum uncertainty, and statistical comparison. For that matter, the mineral contents (Cu, Mn, Fe, Zn, Mg, P, Ca, K, and Na) of quinoa (Chenopodium quinoa), amaranth (Amaranthus caudatus), and buckwheat (Fagopyrum esculentum) were determined, using three different digestion methods, including dry-ashing, microwave, and graphite block acid digestion. A decision was reached concerning the optimal digestion method to be employed, with the results classified into three categories: (i) “rejected if results failed in two categories; (ii) “use with caution” if results were not satisfactory in one category; or (iii) “accepted”, if the results passed in all the categories. The system efficacy was exemplified by the effectiveness of dry-ashing and graphite block acid digestion by comparison with microwave digestion. Neither dry-ashing nor graphite block acid digestion can be recommended as an alternative method to the microwave digestion method when all the prioritized nutrient minerals are understudied. Although the microwave method is preferable for multi-elemental analysis, it is possible to obtain, with caution, comparable results from all the digestion methods if a higher relative combined uncertainty is defined (target uncertainty < 11%) under the assumption that this is suitable for the study.

2 April 2025 in Foods
Verified
Journal Article
Open access
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Mariana Coelho SantosMariana Coelho Santos
Mariana Coelho Santos
Ricardo AssunçãoRicardo Assunção
Ricardo Assunção
Maintaining a healthy diet throughout life helps prevent all forms of malnutrition, thereby reducing the risk of non-communicable diseases (NCDs) and related conditions