Fibre extracted from stems of jute seed crops—normally discarded after seed harvesting—has met Bureau of Indian Standards (BIS) grading requirements in controlled trials. The process involves a mechanical separation process, called circular scissor machine, which isolates seed-bearing branches so fibre-rich stems can be retted separately. The results indicate that seed crop residues could provide an additional raw-material stream for coarse jute textiles.
- Researchers used a mechanical separation process called circular scissor machine to detach seed-bearing branches from fibre-rich stems, enabling seed collection and fibre recovery from the same jute seed crop.
- Comparative retting experiments showed that treating separated stems with 5% urea reduced retting time and produced finer fibres than conventional water retting processes.
- The extracted fibres satisfied BIS grading parameters, indicating suitability for coarse jute textile applications such as rugs, mats and upholstery materials.
- The findings have been reported in the study 'Potential of Jute Seeds Crop Waste for Textile Applications: A Novel Machine-Based Approach for Sustainable Resource Utilization', published in Scientific Reports.
THE RESEARCH FOCUS: Jute grown for seed leaves behind large volumes of stems once the seeds are harvested, and these are usually discarded or burned. Researchers examined whether this material could instead be turned into a usable fibre source. The work assessed whether stems from seed crops could be processed separately after seed harvesting so that the same crop could provide both seeds and textile fibre.
- Jute plants cultivated for seed leave behind stems that are generally treated as agricultural waste once the seeds are removed from the plant.
- Most harvesting practices focus only on collecting seeds, leaving the stems unsuitable for fibre extraction and resulting in large volumes of plant material being discarded.
- The study explored whether stems from seed crops could be processed for fibre while still allowing normal seed harvesting from the same plants.
- The research was conducted by Yasin Pathan, Pawan Kumar Singotia, K. Manoz Kumar Reddy, Shradhesh Rajuji Marve, Subbarama Kousik Suraparaju, Ch Polayya and Nupur Ojha from CVR College of Engineering, Hyderabad; Raghu Engineering College, Vishakhapatnam; Aditya University, Surampalem; Rajiv Gandhi College of Engineering Research and Technology, Chandrapur; Sri Vasavi Engineering College, Tadepalligudem; Lendi Institute of Engineering and Technology, Vizianagaram; and TAPMI School of Business, Manipal University Jaipur.
- The work assessed whether using seed-crop residues for fibre production could expand the raw-material base available to the jute sector while reducing agricultural waste and improving overall resource utilisation within jute cultivation systems.
HOW THE METHOD WORKS: The research examined how stems from jute seed crops could be separated so that seed-bearing branches and fibre-rich stems could be processed separately after harvesting. The method relies on a mechanical separation process, called circular scissor machine, that cuts away seed-bearing branches while leaving the fibre-rich stems intact. Once separated, the stems can undergo retting so that fibre can be extracted and evaluated.
- The separation method uses a circular scissor machine to remove seed-bearing branches from the main stems of the harvested jute plants.
- This separation allows the crop to serve two purposes—seed recovery from the separated branches and fibre recovery from the remaining stems that would otherwise be discarded.
- Trials indicated that the separation process could operate efficiently while avoiding damage to the seeds collected during harvesting, ensuring that the crop can continue to serve its primary function of seed production.
- After the branches were removed, the remaining stems were subjected to retting to release fibres from the plant structure.
- Researchers compared conventional water retting with a retting process assisted by a small quantity of urea to improve fibre extraction.
RESEARCH FINDINGS: Tests on fibres recovered from jute seed crop stems indicate that the material can meet quality requirements for certain textile uses. The study compared fibres produced through conventional retting with those obtained using a modified process involving a small quantity of urea. Results showed improvements in retting time and fibre characteristics, including fibre fineness and cleanliness, demonstrating the potential of seed-crop stems as an additional raw-material source for coarse jute textiles.
- Retting assisted by about 5% urea shortened the time required to extract fibre from the stems compared with conventional water retting methods.
- The modified retting process produced fibres that were finer and cleaner than those obtained through conventional retting alone.
- Fibre samples produced from the seed crop stems satisfied BIS grading parameters for coarse jute fibres.
- The recovered fibres could potentially be used in products such as rugs, mats, upholstery materials and similar coarse textile applications.
- Using stems from jute seed crops for fibre recovery could reduce agricultural waste and improve resource utilisation within jute cultivation systems.
