We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Development of Chitosan-Based Antibacterial Bioplastic from Shrimp Shell Waste with the Addition of Patchouli Oil (Pogostemon cablin Benth)
AI summary Read the abstract
Scientists turned shrimp shell waste and corn cobs into a new kind of food packaging that's biodegradable and naturally fights germs like E. coli and staph, thanks to patchouli oil mixed in. This matters because it could offer a plastic alternative that both breaks down in soil (over 74% within the test period) and keeps food safer from bacteria—tackling plastic pollution and food safety at the same time, without relying on fossil fuels or synthetic preservatives.
Abstract: Plastic waste pollution remains a critical global issue, with fossil-based plastics contributing significantly to environmental damage. Bioplastics derived from organic residues are a promising alternative for sustainable packaging. In this study, shrimp shell waste was converted into chitosan and combined with patchouli essential oil (PEO) and cellulose nanocrystals (CNC) from corn cob waste to develop antibacterial bioplastic films. PEO was incorporated using both Tween-80 and CNC-stabilized Pickering emulsions at different oil concentrations (20%, 30%, and 40%). The fabricated films were characterized for thickness, tensile strength, elongation, water solubility, moisture content, biodegradability, antibacterial activity, and morphology. Results showed that Tween-80 stabilized films exhibited the highest tensile strength (6.32 MPa), whereas CNC-based Pickering emulsions improved flexibility and antibacterial properties. Increasing PEO content in Pickering emulsions enhanced antibacterial activity against Staphylococcus aureus and Escherichia coli, with the C2E40 film achieving the largest inhibition zones (22.00 mm and 17.92 mm, respectively). Films containing CNC also displayed reduced moisture content and improved biodegradability, with up to 74.03% degradation in soil burial tests. SEM analysis confirmed more porous structures with increasing PEO concentration, particularly in Pickering emulsion films. Overall, CNC-stabilized emulsions effectively enhanced the incorporation and release of PEO, producing bioplastic films with improved antibacterial properties and biodegradability for potential food packaging applications. Abstrak: Pencemaran limbah plastik masih menjadi isu global yang krusial, di mana plastik berbasis fosil memberikan kontribusi besar terhadap kerusakan lingkungan. Bioplastik yang berasal dari residu organik menjadi salah satu alternatif berkelanjutan untuk kemasan ramah lingkungan. Pada penelitian ini, limbah cangkang udang diolah menjadi kitosan dan dikombinasikan dengan minyak nilam (patchouli essential oil/PEO) serta nanokristal selulosa (CNC) dari limbah tongkol jagung untuk menghasilkan film bioplastik antibakteri. PEO diinkorporasikan menggunakan dua metode, yaitu emulsi dengan Tween-80 dan emulsi Pickering yang distabilkan oleh CNC pada berbagai konsentrasi minyak (20%, 30%, dan 40%). Film yang dihasilkan dikarakterisasi berdasarkan ketebalan, kekuatan tarik, elongasi, kelarutan air, kadar air, biodegradabilitas, aktivitas antibakteri, dan morfologi. Hasil menunjukkan bahwa film dengan emulsi Tween-80 memiliki kekuatan tarik tertinggi (6,32 MPa), sedangkan emulsi Pickering berbasis CNC meningkatkan fleksibilitas dan aktivitas antibakteri. Peningkatan konsentrasi PEO pada emulsi Pickering memperkuat aktivitas antibakteri terhadap Staphylococcus aureus dan Escherichia coli, dengan film C2E40 menghasilkan zona hambat terbesar (22,00 mm dan 17,92 mm). Penambahan CNC juga menurunkan kadar air dan meningkatkan biodegradabilitas hingga 74,03% pada uji tanam tanah. Analisis SEM menunjukkan struktur lebih berpori seiring meningkatnya konsentrasi PEO. Secara keseluruhan, emulsi Pickering yang distabilkan CNC efektif meningkatkan distribusi dan pelepasan PEO, menghasilkan film bioplastik dengan sifat antibakteri dan biodegradabilitas yang lebih baik untuk aplikasi kemasan pangan.
More Papers Like This
Green Chitosan Bioplastics: How the Filler Impacts the Biological Activity and the Biodegradability?
AI summary Read the abstract
Scientists tested plant-based plastic films made from chitosan (a material derived from crab and shrimp shells) mixed with natural clay or chitin fillers, and found these films kill harmful bacteria like E. coli and Staph while being safe for human cells and blood. Even better, the films fully break down in soil within just four to six weeks, offering a promising alternative to conventional plastics that linger in the environment and break into microplastics. This matters because it points toward safer food packaging and medical materials that protect us from germs without contributing to plastic pollution.
Biodegradability Studies of Chitosan-Based Packaging
AI summary Read the abstract
Scientists tested a plastic alternative made from chitosan (a natural material derived from shellfish shells) and found it breaks down effectively in compost, soil, and water, unlike conventional plastics that can linger for centuries and shed microplastics. This matters because switching to packaging like this could help reduce the plastic pollution that's increasingly found in our food, water, and even our bodies. More research is still needed to fine-tune the material before it's ready for widespread use.
Mechanical properties and soil and marine degradation behavior of environmentally friendly polylactic acid/nanochitin composite films
AI summary Read the abstract
Scientists mixed a plant-based plastic (PLA) with chitin — a natural fiber found in shrimp and crab shells — to create a stronger, more heat-resistant packaging material that also breaks down faster in soil and ocean water than regular biodegradable plastic. This matters because it could help reduce microplastic pollution, which has been linked to health concerns as tiny plastic particles increasingly turn up in our food, water, and even our bodies. The upgraded material could offer a sturdier alternative to conventional plastics while leaving less lasting waste behind.
Chitosan as a sustainable alternative for fresh food packaging: Structural insights, modification strategies, and innovations for commercial viability
AI summary Read the abstract
Researchers reviewed how chitosan — a natural biopolymer derived from crustacean shells — can serve as a biodegradable alternative to single-use plastic food packaging, detailing chemical modification strategies, nanocomposite reinforcement approaches, and recent advances in antimicrobial and antioxidant performance that improve its commercial viability.
Synthesis and characterization of edible plastic based on waste-derived durian seed starch with patchouli leaf extract as eco-friendly primary packaging
AI summary Read the abstract
Researchers produced edible bioplastic films from durian seed starch enriched with patchouli leaf extract and found that increasing starch concentration from 6% to 10% improved tensile strength, thickness, and elongation while achieving 65% biodegradation in 14 days and antimicrobial activity against E. coli, suggesting a viable food packaging alternative to petroleum-based plastic.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.