Flaxseed as a Functional Ingredient: A Review of Nutritional Attributes and Value-Added Applications

Flaxseed (Linum usitatissimum), renowned for its rich nutritional profile, has emerged as a valuable raw material for the development of a wide range of value-added products. Packed with alpha-linolenic acid (ALA), lignans, dietary fiber, protein, and essential micronutrients, flaxseed offers numerous health benefits including cardiovascular protection, antioxidant activity, and digestive health support. The increasing consumer demand for functional foods and nutraceuticals has accelerated the innovation and commercialization of flaxseed-based products. Value-added flaxseed products include cold-pressed flaxseed oil, flaxseed meal, bakery products, protein-enriched snacks, dietary supplements, and cosmetic formulations. These products not only enhance the bioavailability of flaxseed nutrients but also improve shelf life and palatability, catering to both health-conscious consumers and those with specific dietary needs such as gluten-free or plant-based diets. Additionally, flaxseed by- products generated during oil extraction are being efficiently utilized in animal feed and biodegradable packaging materials, promoting zero-waste processing. However, challenges such as preserving sensitive bioactive compounds during processing and mitigating anti- nutritional factors like cyanogenic glycosides pose significant hurdles to product development. Technological advancements in food processing, microencapsulation, and functional ingredient blending further contribute to the stability and sensory quality of flaxseed-enriched formulations. This review contributes to the field by synthesizing current knowledge on the nutritional attributes, processing technologies, and applications of flaxseed, thereby offering valuable insights for researchers, product developers, and policymakers in the functional food sector. Overall, the development of flaxseed value-added products holds promising potential for the food, health, and wellness industries, offering sustainable economic opportunities while addressing global trends toward healthier and eco-conscious consumption.