02335nas a2200217 4500008004100000022001400041245019500055210006900250260000800319300001100327490000800338520148600346653001701832653002101849653002901870653001601899653002301915100002101938700002301959856013501982 2023 eng d a0926-669000aEffective valorization of blackstrap molasses to poly gamma glutamic acid (γ-PGA) using L-glutamic acid independent feeding approach and its significance as drought mitigator in wheat plant0 aEffective valorization of blackstrap molasses to poly gamma glut cOCT a1169850 v2023 a

One of the finest approaches towards sustainable waste management is its effective valorization to value-added products (VAPs). Waste valorization is garnering considerable attention since it delivers substantial advantages, including environmental stability and a sustainable and viable platform for producing different VAPs. One such VAP is the poly gamma glutamic acid (& gamma;- PGA), an extortionate biopolymer known to date. Its exorbitant cost is the main barrier preventing & gamma;- PGA from becoming commercially viable. Hence, the key to the successful commercialization of & gamma;- PGA is its sustainable and cost-effective production. In the present study, the ability of Bacillus paralicheniformis NCIM 5769 to utilize molasses for & gamma;-PGA production with minimal nutrients was investigated. Results showed that 30% molasses combined with 2% ammonium nitrate was the optimal medium for & gamma;-PGA production. Additionally, the anti-drought activity of the synthesized & gamma;-PGA was evaluated on wheat plants showing significantly higher shoot length, biomass content, and germination rate compared to the control group. These findings suggest that & gamma;-PGA produced from molasses has the potential to be used as a drought mitigator in wheat plant, thereby achieving the mission of circular economy and sustainable development goal (SGD) 12, i.e. pursuing sustainability patterns for consumption & production.

10aAnti-drought10acircular economy10aPoly gamma glutamic acid10aSustainable10aWaste valorization1 aNair, Pranav, G.1 aDharne, Mahesh, S. uhttps://library.ncl.res.in/content/effective-valorization-blackstrap-molasses-poly-gamma-glutamic-acid-%CE%B3-pga-using-l-glutamic01864nas a2200193 4500008004100000022001400041245013100055210006900186260000800255520112600263653002201389653002101411653002901432653002301461100001701484700002401501700002301525856012201548 2023 eng d a2190-681500aPoly-gamma-glutamic acid biopolymer: a sleeping giant with diverse applications and unique opportunities for commercialization0 aPolygammaglutamic acid biopolymer a sleeping giant with diverse  cAPR3 a

Poly-gamma-glutamic acid (gamma-PGA) is a biodegradable, non-toxic, ecofriendly, and non-immunogenic biopolymer. Its phenomenal properties have gained immense attention in the field of regenerative medicine, the food industry, wastewater treatment, and even in 3D printing bio-ink. The gamma-PGA has the potential to replace synthetic non-degradable counterparts, but the main obstacle is the high production cost and lower productivity. Extensive research has been carried out to reduce the production cost by using different waste; however, it is unable to match the commercialization needs. This review focuses on the biosynthetic mechanism of gamma-PGA, its production using the synthetic medium as well as different wastes by L-glutamic acid-dependent and independent microbial strains. Furthermore, various metabolic engineering strategies and the recovery processes for gamma-PGA and their possible applications are discussed. Finally, highlights on the challenges and unique approaches to reduce the production cost and to increase the productivity for commercialization of gamma-PGA are also summarized.

10aCommercialization10aMulti-nutritious10aPoly-gamma-glutamic acid10aWaste valorization1 aNair, Pranav1 aNavale, Govinda, R.1 aDharne, Mahesh, S. uhttps://library.ncl.res.in/content/poly-gamma-glutamic-acid-biopolymer-sleeping-giant-diverse-applications-and-unique02324nas a2200313 4500008004100000022001400041245012000055210006900175260000800244300001600252490000700268520125100275653004201526653001201568653002401580653002801604653002601632653002301658100001401681700001801695700002001713700002001733700001801753700002301771700003701794700002501831700002701856856012701883 2025 eng d a2190-681500aSustainable cellulose nanofiber extraction from Borassus flabellifer: a comprehensive study and analytical insights0 aSustainable cellulose nanofiber extraction from Borassus flabell cSEP a25359-253730 v153 a

Cellulose, a biodegradable and renewable material, is versatile and transforms various fields. This work uses a chemo-mechanical method to discuss the extraction and analysis of palmyra (Borassus flabellifer) fruit derived cellulose nanofibers (PFCNF). The mild acid treatment, steam explosion, and homogenization could increase the physico-chemical properties of Borassus flabellifer fiber. The chemical composition and FTIR analysis confirmed the successful elimination of the hemicellulose, lignin, and other extractives in the palmyra fruit pulp. The solid-state 13C NMR proved the cellulose type I structure of the extracted PFCNF. The crystallinity index of PFCNF was found to be 57%. The yield of the cellulose was calculated to be 44%. PFCNF exhibited fibrous morphology with a nanodimension of 10-80 nm, validated using scanning electron microscopy and transmission electron microscopy. With progressive treatments, the thermal stability was increased, and the Tmax of PFCNF was 32 degrees C higher compared to the raw fibers. These superior properties further support their potential in eco-friendly packaging, advanced composites, biomedical materials, film production, electronics, coating materials, and paper production.

10aBorassus flabellifer10aBiomass10aCellulose nanofiber10aEco-friendly extraction10aSustainable materials10aWaste valorization1 aSurya, S.1 aSoman, Arathy1 aKrishnan, Akhil1 aSuresh, Parvana1 aNeenu, K., V.1 aAjithkumar, T., G.1 aParameswaranpillai, Jyotishkumar1 aBegum, P., M. Sabura1 aDominic, C., D. Midhun uhttps://library.ncl.res.in/content/sustainable-cellulose-nanofiber-extraction-borassus-flabellifer-comprehensive-study-and02381nas a2200277 4500008004100000022001400041245008600055210006900141260000800210300001100218490000800229520153500237653001801772653001301790653001101803653001501814653001801829653002301847100001901870700002201889700001801911700001701929700001701946700002501963856011501988 2025 eng d a0141-813000aSustainable UV absorbing bio-plastic films by valorisation of humins and chitosan0 aSustainable UV absorbing bioplastic films by valorisation of hum cJUN a1437100 v3113 a

Humins, an inevitable bio-refinery waste by-product of sugar dehydration have been efficiently utilized for the first time for developing biodegradable thin films for UV shielding. The films were prepared from chitosan, and humins, a novel combination, aiming towards simultaneous utilization of marine and bio-refinery waste, rendering simple, effective, robust UV absorbing films. The structure-activity relationship of these films were elucidated with the help of different analytical techniques like X-ray diffraction, Fourier transform infrared spectroscopy, Thermogravimetric analysis, UV-vis spectroscopy, Atomic force microscopy, Scanning electron microscopy, Tensile testing, Contact angle measurements and water absorption studies. Intrinsic biodegradability was studied using fungi i.e. Aspergillus niger. Different feedstocks (corncob, rice husk, glucose and xylose) were explored for generating humins. Amongst them, humins derived from xylose were utilized for the preparation of the bio-plastic films of chitosan. The results revealed that, addition of 5.0 % humins was observed to be an optimum concentration yielding films with excellent UV absorption, mechanical properties, and biodegradability. The current work is in perfect alignment with sustainability and green chemistry as it ameliorates waste valorization (lignocellulosic and marine altogether). Further, its innovation stems from the first-hand use of humins for UV absorption, novel combination of biopolymers, use of green raw materials.

10abiodegradable10aChitosan10aHumins10aThin films10aUV absorption10aWaste valorization1 aLucas, Nishita1 aTambe, Snehal, S.1 aParate, Roopa1 aHengne, Amol1 aRode, C., V.1 aAthawale, Anjali, A. uhttps://library.ncl.res.in/content/sustainable-uv-absorbing-bio-plastic-films-valorisation-humins-and-chitosan