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생체재료

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본 자료는 생체재료, 조직공학, 생분해성, 생체고분자, 생체적합성, 지지체, 생분해성 물질, 하이드록시아파타이트, 키토산, 알긴산염 등 다양한 주제로 분류 및 집중적으로 다룬 전 세계 영문 논문과 특허를 엄선하여 온라인 과학 저널에 게재한 최신 자료입니다.

Method of synthesis of testosteronan polymer and derivatives and uses thereof

Patent published on the 2026-05-28 in WO under Ref WO2026112535 by WEKA BIOSCIENCES LLC [US] (Otto Nigel J [us])

Abstract: Embodiments of the present invention provides recombinant systems, methods, and compositions for the biological production of Testosteronan (Testan), a linear α-(1→4)-linked glucuronic acid–N-acetylglucosamine polysaccharide. Microbial hosts engineered to express full-length CtTS, N-terminal truncation variants (including d64-CtTS), or the Pseudomonas CIPTS homolog synthesize high–molecular-weight Testan (≥800 kDa) with low polydispersity. Structural analysis by ¹H NMR and 2D HSQC demo[...]


Our summary: The invention details a method for synthesizing Testosteronan (Testan) using engineered microbial hosts. It includes purification techniques to obtain defined molecular-weight fractions and sulfated derivatives. Additionally, it outlines applications for Testan in chromatographic stationary phases and biomaterial scaffolds.

Testosteronan, microbial synthesis, polysaccharide derivatives, chromatographic applications

Patent

Wearable articles using earthen materials

Patent published on the 2026-05-28 in US under Ref US20260146004 by THE TRUSTEES OF COLUMBIA UNIV IN THE CITY OF NEW YORK [US] (Ben-alon Rachel Lola [us], Chongtoua Penmai [us])

Abstract: Garments are constructed utilizing wearable textile pieces composed of earth- and bio-based materials. The wearable textiles include 65% clay-rich raw soil, with the balance being bio-based based polymers such as cornstarch, glycerin, cellulose, gelatin, alginate, agar, or combinations thereof, and fiber additives such as wheat straw, paper waste, or combinations thereof. The solid components are mixed with water or vinegar and heated to a predetermined temperature before being cast and cured in[...]


Our summary: Wearable articles are made from clay-rich soil and bio-based polymers. The textiles are mixed, cast, and cured to form flexible, lightweight fabrics. These garments are fully biodegradable, integrating earth materials with natural plastics.

wearable textiles, bio-based materials, clay-rich soil, biodegradable garments

Patent

Dyed fabric including polyhydroxyalkanoate fibers and dyeing method for said fabric

Patent published on the 2026-05-28 in WO under Ref WO2026110911 by ASAHI KASEI KK [JP] (Yamaguchi Saeko [jp], Hara Yuichi [jp], Harano Kodai [jp])

Abstract: Provided are: a fabric that has strength sufficient for practical use as clothing or industrial materials and also has excellent color fastness while containing PHA fibers having marine biodegradability; and a dyeing method for obtaining said fabric. The present invention pertains to a dyed fabric which includes polyhydroxyalkanoate fibers including 3-hydroxybutyrate as a monomer unit and having a degree of crystallinity of 50% or more and which exhibits a K/S value of 2 or more. The present inv[...]


Our summary: The invention describes a dyed fabric made from polyhydroxyalkanoate fibers that are strong and have excellent color fastness. It includes a dyeing method that operates at temperatures between 86-120°C. The fabric features a degree of crystallinity of 50% or more and a K/S value of 2 or more.

Dyed fabric, polyhydroxyalkanoate fibers, color fastness, dyeing method

Patent

Composition comprising powders for sebum control

Patent published on the 2026-05-28 in WO under Ref WO2026110938 by OGAMI KAZUNORI [JP] (Yamana Arisa [jp], Okamoto Mariko [jp], Ogami Kazunori [jp])

Abstract: The present invention relates to a composition comprising: (a) at least one first powder comprising (i) at least one inorganic oxide, preferably metal oxide, and more preferably alkaline earth metal oxide, and (ii) at least one fatty acid or salt thereof, preferably saturated fatty acid or salt thereof, and more preferably metal salt of saturated fatty acid; and (b) at least one second powder selected from particles comprising silica and hydroxyapatite. The composition according to the present i[...]


Our summary: The invention describes a composition for sebum control using specific powders. It includes an inorganic oxide and a fatty acid or its salt. Additionally, it incorporates a second powder like silica or hydroxyapatite for enhanced efficacy.

powder composition, sebum control, inorganic oxide, fatty acid

Patent

Pharmaceutical formulations

Patent published on the 2026-05-28 in WO under Ref WO2026110125 by DOMINIC SCHILLER [GB] (Givoni Nathan Jacob [au], Huynh Julie [au], Wynne Paul Michael [au], Tolotchkov Kristina [au], Corbett De Aquino Sofia [au], Suwarno Patricia Carissa [au])

Abstract: This invention relates to a pharmaceutical formulation and more particularly to one for Active Pharmaceutical Ingredients (APIs) which are recognised under the Biopharmaceutical Classification System (BCS) as a Class I, III or III drug. In addition to the API, it comprises a combination of gelling agents comprising: a primary gelling agent which is agar and a secondary gelling agent which is an alginate together with at least one cation donator, a preservative, and water and optionally a thicken[...]


Our summary: This invention describes a pharmaceutical formulation for APIs classified as Class I, III, or IV under the BCS. It includes agar as a primary gelling agent and alginate as a secondary gelling agent, along with cation donators, preservatives, and water. Optional components may include thickening agents, sweeteners, and flavorings.

Pharmaceutical formulation, Active Pharmaceutical Ingredients, gelling agents, Biopharmaceutical Classification System

Patent

Implants for cartilage and related devices and methods

Patent published on the 2026-05-27 in EP under Ref EP4748349 by BIOGEND THERAPEUTICS CO LTD [TW] (Chen Chao-ping [tw], Lee Po-wei [tw], Hsu Shih-ting [tw])

Abstract: [0001] The present disclosure relates to a transplantable implant comprising a biocompatible scaffold configured to be degraded over time when implanted to cartilage of a patient, the biocompatible scaffold comprising a plurality of pores, and a plurality of chondrocytes incorporated into the scaffold. In some embodiments, the implant has a longitudinal length to be implanted to an implantation hole created on the cartilage, wherein the implantation hole has an implantation depth, wherein the ra[...]


Our summary: The disclosure presents a transplantable implant designed for cartilage repair. It features a biocompatible scaffold with pores and incorporated chondrocytes. The implant s dimensions are tailored for specific implantation depths in cartilage.

biocompatible scaffold, cartilage implant, chondrocytes, degradation

Patent

an aerial view of greening Svalbard

Published on 2026-05-21 by Alice Drinkwater @NATURE

Abstract: Communications Earth & Environment, Published online: 21 May 2026; doi:10.1038/s43247-026-03543-7The twentieth century saw a rapid expansion in Arctic tundra vegetation. Dr Ingrosso and colleagues examined these changes over time by using plant-derived biomarkers (biopolymers from plant leaves and cell walls) from a sediment core in Svalbard. They found that Svalbard’s greening was driven by a decline of summer sea ice and glacier retreat, and that the expansion was associated with vascula[...]


Our summary: Researchers studied sediment core biomarkers to assess greening in Svalbard. The findings link vegetation expansion to reduced summer sea ice and glacier retreat. This greening trend indicates potential future shifts in the Arctic environment due to climate change.

Arctic vegetation, climate change, biomarker analysis, glacier retreat

Publication

Synthesis and biodegradation behavior of polyelectrolytes based on poly(vinyl alcohol) and 2-pyrone-4,6-dicarboxylic acid

Published on 2026-05-19 by Yantian Jiao, Yijie Jin, Atsushi Isobe, Masaya Fujita, Takuma Araki, Yuzo Suzuki, Yuichiro Otsuka, Naofumi Kamimura, Eiji Masai, Tsuyoshi Michinobu @NATURE

Abstract: Polymer Journal, Published online: 19 May 2026; doi:10.1038/s41428-026-01193-2Poly(vinyl alcohol) (PVA) side-chain was substituted with 5–7 mol% lignin-derived 2-pyrone-4,6-dicarboxylic acid (PDC) units. Even this low incorporation markedly improved thermal and mechanical properties, indicating strong effects on intermolecular interactions and chain packing. Acid–base titration showed higher acidity than poly(acrylic acid), demonstrating effective polyelectrolyte behavior. Composting tests[...]


Our summary: The study investigates the synthesis and biodegradation of polyelectrolytes from poly(vinyl alcohol) and 2-pyrone-4,6-dicarboxylic acid. Incorporating lignin-derived units enhances thermal and mechanical properties significantly. Composting tests confirm that these materials are biodegradable, presenting a new approach for biomass-based polyelectrolytes.

polyelectrolytes, poly(vinyl alcohol), biodegradation, lignin-derived

Publication

다룬 주제: 생체재료, 조직공학, 생분해성, 생체고분자, 생체적합성, 지지체, 생분해성, 하이드록시아파타이트, 키토산, 알지네이트, 플라즈마 처리, 열감응성 하이드로겔, ASTM F2637, ISO 10993, ISO 13485, ISO 14971 및 ISO 17025.

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