02236nas a2200265 4500008004100000022001400041245009600055210006900151260000800220300001600228490000800244520137200252653001901624653001901643653001701662653002101679653001601700100001401716700002201730700002301752700002401775700002501799700002301824856012301847 2019 eng d a0304-389400aNovel fatty alkene from marine bacteria: a thermo stable biosurfactant and its applications0 aNovel fatty alkene from marine bacteria a thermo stable biosurfa cDEC aUNSP 1208680 v3803 a

In this study, a novel thermo stable biosurfactants, 1-Pentanonacontene (C95H190) a fatty alkene and 3-Hydroxy16-methylheptadecanoic acid (C18H36O3) were isolated from a marine isolate SGD-AC-13. Biosurfactants were produced using 1% yeast extract in tap water as production medium at 24 h in flask and 12 h in bioreactor. Using 16S rRNA gene sequence (1515 bp) and BCL card (bioMerieux VITEK (R)), strain was identified as Bacillus sp. Crude biosurfactant reduced the surface tension of distilled water to 31.32 +/- 0.93 mN/m with CMC value of 0.3 mg/ml. Cell free supernatant showed excellent emulsification and oil displacement activity with stability up to 160 degrees C, pH 6-12 and 50 g/L NaCl conc. Biosurfactants were characterized using FTIR, TLC, HPLC LC-MS and NMR spectroscopy. Cell free supernatant reduced the contact angle of distilled water droplet from 117 degrees to 52.28 degrees and of 2% pesticide from 78.77 degrees to 73.42 degrees while 750 mu g/ml of crude biosurfactant reduced from 66.06 degrees to 56.33 degrees for 2% pesticide and recovered 35% ULO and 12% HWCO from the contaminated sand. To our best of knowledge, this is the first report of thermo stable fatty alkene as a biosurfactant and is structurally different from previously reported, with having potential application in agriculture, oil recovery and bioremediation.

10aBioremediation10aBiosurfactants10aFatty alkene10aThermo stability10aWettability1 aRam, Hari1 aSahu, Amit, Kumar1 aSaid, Madhukar, S.1 aBanpurkar, Arun, G.1 aGajbhiye, Jayant, M.1 aDastager, Syed, G. uhttps://library.ncl.res.in/content/novel-fatty-alkene-marine-bacteria-thermo-stable-biosurfactant-and-its-applications01832nas a2200265 4500008004100000022001400041245013700055210006900192260000800261300001400269490000600283520090800289653001901197653001701216653002001233653002601253100002301279700002301302700002401325700002601349700002301375700002101398700002301419856012401442 2020 eng d a2193-580700aNew TBAF complex, highly stable, facile and selective source for nucleophilic fluorination: applications in batch and flow chemistry0 aNew TBAF complex highly stable facile and selective source for n cJUL a1022-10260 v93 a

Natural polysaccharides supported tetrabutylammonium fluoride (TBAF) complexes are prepared and found to be highly stable and selective fluoride source for well-renowned nucleophilic (SN2 type) fluorination reactions for the first time. Bacterial cellulose, plant cellulose, pectin, and starch derived TBAF complexes are synthesized, characterized (using SEM, TEM, and NMR techniques) and studied for their stability and reactivity. Heterogeneous bacterial cellulose-TBAF complex (NBu4(Bac-cell-OH)F) 1 was found to be highly stable and non-hygroscopic among all complexes, which gave high yields of fluorinated products in multi-gram scale in shorter reaction time. The primarily developed batch protocol was extended to solid-solid continuous flow reaction using an in-house built screw reactor, which furnished products in a few seconds of residence time (tR=20-25 sec) and excellent yields.

10aFlow synthesis10afluorination10agreen chemistry10aSustainable Chemistry1 aSaid, Madhukar, S.1 aKhonde, Nilesh, S.1 aThorat, Meghana, N.1 aAtapalkar, Ranjit, S.1 aKulkarni, Amol, A.1 aGajbhiye, Jayant1 aDastager, Syed, G. uhttps://library.ncl.res.in/content/new-tbaf-complex-highly-stable-facile-and-selective-source-nucleophilic-fluorination02708nas a2200277 4500008004100000022001400041245010300055210006900158260000800227300001600235490000700251520178400258653002202042653001902064653002702083653000702110653002102117653001102138100001702149700002302166700002802189700002602217700003002243700003002273856012702303 2023 eng d a0272-884200aNovel Biogenic Synthesis of Pd/TiO@BC as an electrocatalytic and possible energy storage materials0 aNovel Biogenic Synthesis of PdTiOBC as an electrocatalytic and p cMAY a15874-158830 v493 a

The standard approach towards synthesizing nanomaterials exercising chemical or physical techniques generally costs more and necessitates using toxic chemicals, which negatively affect the environment. For the first time, an investigation of a basic green synthesis approach for Phyto fabrication of Pd/TiO@BC nanocomposite via biomass of rice husk (Oryza sativa L) is conducted to sustain the green chemistry for synthesis of less toxic chemicals. XRD analysis revealed that the structure of Phyto synthesized Pd/TiO@BC is crystalline, while UV, FTIR, SEM and EDX analyses marked the victorious nanocomposite biosynthesis. We have investigated the electrocatalytic and biomedical applications of the novel nanocomposite Pd/TiO@BC at different environmental conditions. Testing the potential electrochemical properties of Pd/TiO@BC to eliminate the Congo red (CR) dye from wastewater marked its high removal efficiency, which attained 90% owing to the higher electron efficiency. Its sensitivity for CR was also examined, and acceptable degradation activity was observed. These Pd/TiO@BC proved to be beneficial in various fields, including electrochemistry, catalysis sensors, wastewater treatment, and nano-devices, and in the transformation of hazardous particles into less harmful substances. Its great potential for use as a supercapacitor is promised by its feature, including durability and compact stability. Significant guidelines could be extracted from the results, which are helpful in material size, synthesis, selection, and configuration design for various energy storage gadgets. The synthesis of high performance and economical materials through green chemistry is a novel approach towards effective energy storage and alteration procedure operation.

10aElectro catalytic10aEnergy storage10aOryza sativa L biochar10aPd10aPdNPs and TiONPs10aTiO@BC1 aKhasim, Syed1 aDastager, Syed, G.1 aAlahmdi, Mohammed, Issa1 aHamdalla, Taymour, A.1 aPanneerselvam, Chellasamy1 aMakandar, Mohammad, Basha uhttps://library.ncl.res.in/content/novel-biogenic-synthesis-pdtiobc-electrocatalytic-and-possible-energy-storage-materials02704nas a2200337 4500008004100000022001400041245014400055210006900199260000800268300001400276490000800290520156600298653000601864653002601870653001601896653002001912653002201932653002801954100002201982700002002004700002802024700002902052700002202081700002502103700002202128700002202150700001902172700002302191700002902214856012302243 2023 eng d a0273-228900aNovel finding: 2,4-Di-tert-butylphenol from streptomyces bacillaris ANS2 effective against mycobacterium tuberculosis and cancer cell lines0 aNovel finding 24Ditertbutylphenol from streptomyces bacillaris A cNOV a6572-65850 v1953 a

The aim of the present study is to identify actinobacteria Streptomyces bacillaris ANS2 as the source of the potentially beneficial compound 2,4-di-tert-butylphenol, describe its chemical components, and assess its anti-tubercular (TB) and anti-cancer properties. Ethyl acetate was used in the agar surface fermentation of S. bacillaris ANS2 to produce the bioactive metabolites. Using various chromatographic and spectroscopy analyses, the potential bioactive metabolite separated and identified as 2,4-di-tert-butylphenol (2,4-DTBP). The lead compound 2,4-DTBP inhibited 78% and 74% of relative light unit (RLU) decrease against MDR Mycobacterium tuberculosis at 100ug/ml and 50ug/ml concentrations, respectively. The Wayne model was used to assess the latent/dormant potential in M. tuberculosis H37RV at various doses, and the MIC for the isolated molecule was found to be 100ug/ml. Furthermore, the molecular docking of 2,4-DTBP was docked using Autodock Vinasuite onto the substrate binding site of the target Mycobacterium lysine aminotransferase (LAT) and the grid box was configured for the docking run to cover the whole LAT dimer interface. At a dosage of 1 mg/ml, the anti-cancer activity of the compound 2,4-DTBP was 88% and 89% inhibited against the HT 29 (colon cancer) and HeLa (cervical cancer) cell lines. According to our literature survey, this present finding may be the first report on anti-TB activity of 2,4-DTBP and has the potential to become an effective natural source and the promising pharmaceutical drug in the future.

10a210a4-Di-tert-butylphenol10aanti-cancer10aAnti-tubercular10aMolecular docking10aStreptomyces bacillaris1 aKaari, Manigundan1 aJoseph, Jerrine1 aManikkam, Radhakrishnan1 aKalyanasundaram, Revathy1 aSivaraj, Anbarasu1 aAnbalmani, Sivarajan1 aMurthy, Sangeetha1 aSahu, Amit, Kumar1 aSaid, Madhukar1 aDastager, Syed, G.1 aRamasamy, Balagurunathan uhttps://library.ncl.res.in/content/novel-finding-24-di-tert-butylphenol-streptomyces-bacillaris-ans2-effective-against02702nas a2200265 4500008004100000022001400041245010900055210006900164260000800233300001400241490000700255520179800262653003302060653002602093653001402119653003002133653001402163100002602177700002402203700001402227700002202241700002302263700002002286856013002306 2025 eng d a0965-040700aNigericin-induced apoptosis in acute myeloid leukemia via mitochondrial dysfunction and oxidative stress0 aNigericininduced apoptosis in acute myeloid leukemia via mitocho cAUG a2161-21740 v333 a

Background: Acute Myeloid Leukemia (AML) is a highly aggressive clonal hematological malignancy with limited treatment options. This study aimed to evaluate the therapeutic potential of nigericin, a polyether ionophore derived from Streptomyces DASNCL-29, as a mitochondrial-targeted agent for AML treatment. Methods: Nigericin was isolated from Streptomyces DASNCL-29 and characterized via chromatography and NMR. Its cytotoxicity was tested in MOLM13 (sensitive and venetoclax-resistant) and HL60 (sensitive and cytarabine-resistant) cells using the MTT assay. Mitochondrial dysfunction was assessed by measuring reactive oxygen species (ROS), mitochondrial membrane potential (Arum), and mitochondrial mass. Apoptosis was evaluated with Annexin V/PI assays and immunoblotting, while proteomic analysis was conducted using Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) to identify differentially regulated proteins. Results: Nigericin demonstrated potent cytotoxicity with IC50 values of 57.02 nM in MOLM13-sensitive, 35.29 nM in MOLM13-resistant, 20.49 nM in HL60-sensitive, and 1.197 nM in HL60-cytarabine-resistant cells. Apoptosis was confirmed by Annexin V/PI staining and caspase-3/PARP cleavage, along with MCL-1 downregulation. Mitochondrial dysfunction was evident from increased ROS, reduced Arum, and decreased mitochondrial mass. Proteomic profiling identified 264 dysregulated proteins, including a 3.8-fold upregulation of Succinate Dehydrogenase [Ubiquinone] Flavoprotein Subunit A (SDHA). Conclusion: Nigericin induces apoptosis in AML cells by disrupting mitochondrial function and enhancing oxidative stress. Its nanomolar potency highlights the need for further mechanistic studies and in vivo evaluations to explore its potential in AML treatment.

10aAcute myeloid leukemia (AML)10aAntineoplastic agents10aApoptosis10aMitochondrial dysfunction10aNigericin1 aArun, Bhavyadharshini1 aGopinath, Prarthana1 aJha, Anup1 aTripathi, Nishtha1 aDastager, Syed, G.1 aHasan, Syed, K. uhttps://library.ncl.res.in/content/nigericin-induced-apoptosis-acute-myeloid-leukemia-mitochondrial-dysfunction-and-oxidative02398nas a2200289 4500008004100000022001400041245011100055210006900166260000800235300001100243490000800254520145100262653001901713653003101732653002401763653001601787653001601803653002001819100002101839700001601860700002201876700001801898700002501916700001801941700002301959856012601982 2026 eng d a0141-391000aNovel biosurfactant assisted biodegradation of polystyrene by Actinomycetes and its chemical understanding0 aNovel biosurfactant assisted biodegradation of polystyrene by Ac cAPR a1119460 v2463 a

The current study highlights the effective biodegradation of polystyrene by two actinobacterial strains, Glutamicibacter sp. K-1 and Rhodococcus sp. BG-30. FT-IR, Raman spectroscopy, and GPC data showed the degradation pattern of polystyrene. Additionally, GC-MS analysis showed that strain K-1 produced a variety of degradation by-products, including alkanes, 2,4-Di-ter-butyl phenol, 2-propenoic acid, tridecyl ester, and dibutyl phthalate, while strain BG-30 produced a greater amount of alkenes, phthalic acid, and isobutyl octyl esters. GPC detected a drop in polystyrene's average molecular weight (Mn), which suggests chain scission of the polymer. Changes in polystyrene's roughness and other morphological properties were shown by AFM and FE-SEM. The effects of a conventional rhamnolipid and a novel thermostable biosurfactant fatty alkene (0.1 % each) on the breakdown of polystyrene were examined. Strain K-1 and BG-30 resulted in increasing the degradation of polystyrene to 12 % (w/w) and 16 % (w/w), respectively in the presence of fatty alkene biosurfactant, there was 10 % (w/w) and 8 % (w/w), degradation in presence of rhamnolipid. To the best of our knowledge, degradation of polystyrene by Glutamicibacter sp. has been reported as a newly identified strain and use of a novel biosurfactant together revealed their potential in biodegradation of plastic to mitigate the plastic pollution using microbial resources.

10aBiodegradation10aFatty alkene biosurfactant10aGlutamicibacter sp.10aPolystyrene10aRhamnolipid10aRhodococcus sp.1 aSakpal, Amrapali1 aHaq, Nazrul1 aDasgupta, Santanu1 aAlanazi, Fars1 aAlsarra, Ibrahim, A.1 aAlam, Mahboob1 aDastager, Syed, G. uhttps://library.ncl.res.in/content/novel-biosurfactant-assisted-biodegradation-polystyrene-actinomycetes-and-its-chemical