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Dehydration, Rehydration and Thermal Treatment: Effect on Bioactive Compounds of Red Seaweeds IPorphyra umbilicalis/I and IPorphyra linearis/I
The nutritional and bioactive value of seaweeds is widely recognized, making them a valuable food source. To use seaweeds as food, drying and thermal treatments are required, but these treatments may have a negative impact on valuable bioactive compounds. In this study, the effects of dehydration, rehydration, and thermal treatment on the bioactive compounds (carotenoids, phycobiliproteins, total phenolic content (TPC), total flavonoids content (TFC)), antioxidant (ABTS and DPPH radical scavenging activities) and anti-Alzheimer’s (Acetylcholinesterase (AchE) inhibitory activities, and color properties of Porphyra umbilicalis and Porphyra linearis seaweeds were evaluated. The results revealed significant reductions in carotenoids, TPC, TFC, and antioxidant activities after the seaweeds’ processing, with differences observed between species. Thermal treatment led to the most pronounced reductions in bioactive compound contents and antioxidant activity. AchE inhibitory activity remained relatively high in all samples, with P. umbilicalis showing higher activity than P. linearis. Changes in color (ΔE) were significant after seaweeds’ dehydration, rehydration and thermal treatment, especially in P. umbilicalis. Overall, optimizing processing methods is crucial for preserving the bioactive compounds and biological activities of seaweeds, thus maximizing their potential as sustainable and nutritious food sources or as nutraceutical ingredients.
Journal Article
Seaweed cookbook : discover the health benefits and uses of seaweed, with 50 delicious recipes
\"The Seaweed Cookbook discusses the benefits of seaweed in everyday consumption and contains recipes that use seaweed as the main ingredient, including food, drinks and topical beauty recipes.\" -- Provided by publisher.
Book
A Comprehensive Review of the Cardioprotective Effect of Marine Algae Polysaccharide on the Gut Microbiota
Cardiovascular disease (CVD) is the number one cause of death worldwide. Recent evidence has demonstrated an association between the gut microbiota and CVD, including heart failure, cerebrovascular illness, hypertension, and stroke. Marine algal polysaccharides (MAPs) are valuable natural sources of diverse bioactive compounds. MAPs have many pharmaceutical activities, including antioxidant, anti-inflammatory, immunomodulatory, and antidiabetic effects. Most MAPs are not utilized in the upper gastrointestinal tract; however, they are fermented by intestinal flora. The relationship between MAPs and the intestinal microbiota has drawn attention in CVD research. Hence, this review highlights the main action by which MAPs are known to affect CVD by maintaining homeostasis in the gut microbiome and producing gut microbiota-generated functional metabolites and short chain fatty acids. In addition, the effects of trimethylamine N-oxide on the gut microbiota composition, bile acid signaling properties, and CVD prevention are also discussed. This review supports the idea that focusing on the interactions between the host and gut microbiota may be promising for the prevention or treatment of CVD. MAPs are a potential sustainable source for the production of functional foods or nutraceutical products for preventing or treating CVD.
Journal Article
Seaweed chronicles : a world at the water's edge
\"An ancient and vital part of the ecosystem, seaweed is now emerging as an increasingly important source of food in a world faced with diminishing natural resources. [This book] opens a window into the world of this ... plant by providing a look at life on the rugged shore of the Gulf of Maine, focusing not only on the plant life underwater, but also on the men and women who farm and harvest seaweed, and on the increasingly difficult task of protecting this critical natural resource against forces both natural and man-made\"-- Provided by publisher.
Book
The Science and Spirit of Seaweed
Sustainable Pacific Northwest-based seaweed harvester Amanda Swinimer describes the ecology, culinary uses, evidence-based health benefits and climate change-resisting potential of seaweed and shares highlights from her remarkable life beneath the waves.
Related to the most ancient living organisms on earth, seaweeds are incredible and unique life forms, sharing qualities with both plants and animals, as well as fungi. They have been prized as a nutrient-dense food source for millennia and contain essential vitamins, minerals and fatty acids, protein and fibre as well as biologically active compounds not found anywhere else in nature. Seaweeds are also a source for innovations combating climate change due in part to their ability to absorb massive quantities of carbon dioxide.
Based in the Pacific Northwest, home to the greatest cold-water seaweed diversity in the world, Amanda Swinimer has made her living from the sustainable harvest of seaweeds for over two decades. In The Science and Spirit of Seaweed, Swinimer reflects on the journey that led to her successful seaweed harvesting business and provides identification information, ecologically sound harvesting techniques, traditional medicinal application and evidence-based health information for more than twenty varieties of seaweeds commonly found from California to Alaska. She also includes notes on culinary and skin-care uses for several types of seaweeds.
Complemented by vibrant underwater photography, beautiful illustrations and chef-inspired recipes, this volume richly conveys the benefits and wonder of living in harmony with the ocean. It will be a welcome resource to beachcombers, foragers and anyone fascinated by the marvels of the natural world.
eBook
Harmful Australian Marine Microalgae
Algal blooms have the potential to wipe out fish farms virtually overnight. Contamination of seafoods with algal toxins can poison human consumers of fish and shellfish. During the past two decades, globally there have been significant increases in economic loss and human health impact due to harmful algal blooms.Harmful Australian Marine Microalgae offers fish and shellfish farmers information on how to effectively identify and monitor for the presence of algal species and take the appropriate species-specific countermeasures. Species descriptions are accompanied by a summary of the known distribution of the alga, its toxicology and, where available, suggestions for countermeasures. The book includes line drawings, light micrographs and electron micrographs to aid identification, as well as references and resources for further information. This guide will be valuable to fisheries and public health officials as well as all those involved in environmental water quality assessment.
eBook