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Innovative DNA profiling for hemp fibre authentication in textiles
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Hemp (Cannabis sativa L.) is a highly versatile and sustainable plant species that has gained increasing attention due to its wide range of industrial applications, particularly in textiles. Known for its strength, durability, and eco-friendly properties, hemp fibres are commonly used in clothing, furnishings, and various industrial products. However, with the rapid expansion of the hemp textile industry, there is an urgent need for robust methods to verify the authenticity of hemp-containing products. Accurate product labelling and compliance with legal standards are essential to maintaining consumer confidence and regulatory oversight. Traditional fibre identification methods, such as microscopic and chemical analyses, often do not differentiate hemp from similar plant fibres, such as flax or cotton, especially in processed textiles. Consequently, molecular biology techniques, specifically DNA-based methods, have emerged as a promising alternative to ensure the traceability and authentication of hemp fibres in textiles. This project aimed to develop a DNA-based tool for identifying alternative fibres in textile raw materials and apparel. This molecular approach offers a reliable solution for fibre authentication and traceability. The textile matrices analysed included fibres and yarns made from hemp, pineapple, banana, flax, and cotton. The DNA extraction protocol was optimised, and the primers used were designed by Thichak et al. PCR amplification was successful across multiple hemp samples, including those with different finishes (biological and mechanical), untreated hemp fibres, and yarns composed of 90% lyocell and 10% hemp. This study confirms the efficacy of these molecular tools for distinguishing hemp from other plant fibres in processed textiles, highlighting the importance of DNA-based methods for fibre authentication in the textile industry. Furthermore, as sustainability and transparency become increasingly important in global markets, this method represents a crucial advance in accurately identifying hem textiles, enhancing trust and integrity in the supply chain.
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Sousa, S. P. D., Silva, M. N. D., & Vasconcelos, M. W. (2024). Innovative DNA profiling for hemp fibre authentication in textiles. 1-1. Poster session presented at I Congreso Ibérico del Cáñamo y I Symposium Ibérico del Cáñamo, Badajoz, Spain.