Estudos de perfis biológicos de plantas marítimas : aplicações em sistemas alimentares
Date
2024
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
IPCB. ESA
Abstract
A investigação em plantas marítimas tem evoluído significativamente nas últimas décadas, tanto no âmbito académico como no plano empresarial, passando pelo quotidiano.
As halófitas são plantas de espécies adaptadas a ambientes com alta concentração de sal, que podem encontrar-se nas zonas costeiras, em salinas e nos manguezais. Estas plantas têm desenvolvimentos morfológicos, fisiológicos e bioquímicos específicos que lhes permitem sobreviver e prosperar em condições salinas que seriam letais para a maioria das outras plantas.
Neste contexto, este trabalho teve como objetivo estudar os perfis biológicos de extratos de halófitas tais como as plantas da espécie Inula crithmoides, Atriplex halimus e Sueda vera, incluindo também a Corema album, popularmente conhecida como camarinha. Estes estudos incluíram a determinação da atividade antioxidante e a determinação de compostos fenólicos consequente e a aplicação de algumas destas plantas como substituto do sal regular em pão. A avaliação da atividade antioxidante e do teor de fenóis totais destacou o extrato de Sueda vera com os resultados mais promissores para ser usada como substituinte do sal no pão.
Assim, realizou-se um ensaio onde se estudou duas concentrações de extrato de Sueda vera PS (pão com 100% de Sueda vera) e PS50 (pão com 50% de Sueda vera) e comparou-se com PN (pão normal), O pão PN teve a melhor atividade antioxidante, com um IC50 de 0,0905 mg/mL. No entanto, a incorporação de Sueda vera nos pães resultou numa melhoria relevante do perfil mineral, especialmente no pão PS, que apresentou teores superiores na maioria dos micronutrientes analisados. Estes resultados sugerem que a adição desta planta pode contribuir para o aumento do valor nutricional dos pães, especialmente no que toca a minerais essenciais para a saúde.
Abstract: Research on marine plants has significantly evolved in recent decades, both in academic and business spheres, and has also made its way into daily life. Halophytes are plant species adapted to environments with high salt concentrations, which can be found in coastal areas, salt flats, and mangroves. These plants have specific morphological, physiological, and biochemical developments that allow them to survive and thrive in saline conditions that would be lethal to most other plants. In this context, this study aimed to investigate the biological profiles of extracts from halophytes such as Inula crithmoides, Atriplex halimus, and Sueda vera, as well as Corema album, commonly known as "camarinha." These studies included determining the antioxidant activity and phenolic compound content, as well as exploring the use of some of these plants as a salt substitute in bread. The evaluation of antioxidant activity and total phenol content highlighted Sueda vera extract as the most promising for use as a salt substitute in bread. Thus, an experiment was conducted to study two concentrations of Sueda vera extract: PS (bread with 100% Sueda vera) and PS50 (bread with 50% Sueda vera), and compared to PN (regular bread). The PN bread showed the best antioxidant activity, with an IC50 of 0.0905 mg/mL. However, the incorporation of Sueda vera in the breads resulted in a significant improvement in the mineral profile, especially in the PS bread, which showed higher levels of most micronutrients analyzed. These results suggest that adding this plant may contribute to increasing the nutritional value of bread, particularly in terms of essential minerals for health.
Abstract: Research on marine plants has significantly evolved in recent decades, both in academic and business spheres, and has also made its way into daily life. Halophytes are plant species adapted to environments with high salt concentrations, which can be found in coastal areas, salt flats, and mangroves. These plants have specific morphological, physiological, and biochemical developments that allow them to survive and thrive in saline conditions that would be lethal to most other plants. In this context, this study aimed to investigate the biological profiles of extracts from halophytes such as Inula crithmoides, Atriplex halimus, and Sueda vera, as well as Corema album, commonly known as "camarinha." These studies included determining the antioxidant activity and phenolic compound content, as well as exploring the use of some of these plants as a salt substitute in bread. The evaluation of antioxidant activity and total phenol content highlighted Sueda vera extract as the most promising for use as a salt substitute in bread. Thus, an experiment was conducted to study two concentrations of Sueda vera extract: PS (bread with 100% Sueda vera) and PS50 (bread with 50% Sueda vera), and compared to PN (regular bread). The PN bread showed the best antioxidant activity, with an IC50 of 0.0905 mg/mL. However, the incorporation of Sueda vera in the breads resulted in a significant improvement in the mineral profile, especially in the PS bread, which showed higher levels of most micronutrients analyzed. These results suggest that adding this plant may contribute to increasing the nutritional value of bread, particularly in terms of essential minerals for health.
Description
Keywords
Halófitas, Ambientes marinhos, Atividade antioxidante, Compostos fenólicos, Substituto de sal, Halophytic, Marine environments, Antioxidant activity, Phenolic compounds, Salt substitute
Citation
VAZ, Maria Liquito (2024) - Estudos de perfis biológicos de plantas marítimas : aplicações em sistemas alimentares. Castelo Branco : IPCB. ESA. 40 p. Relatório do Trabalho de Fim de Curso de Biotecnologia Alimentar.