6 research outputs found

    Minor Iridoids from the Roots of <i>Valeriana wallichii</i>

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    Four new iridoids, valeriotetrates B and C (1 and 2), 8-methylvalepotriate (3), and 1,5-dihydroxy-3,8-epoxyvalechlorine A (4), together with three known iridoids, were isolated from the roots of Valeriana wallichii. The structures of the new compounds were elucidated by analysis of 1D and 2D NMR and HRESIMS data. Compound 4 is an unusual iridoid bearing a C-10 chloro group and an oxo bridge connecting C-3 and C-8, resulting in a rigid skeleton

    MOESM3 of Optimization of cellulolytic enzyme components through engineering Trichoderma reesei and on-site fermentation using the soluble inducer for cellulosic ethanol production from corn stover

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    Additional file 3: Figure S1. Construction of the aabgl1 overexpression T. reesei strains. A: Map of aabgl1 expression vector pCBHYGB-PB; B: Comparison of ÃŽË›-glucosidase production of the recombinant transformants and the host strain T. reesei Rut-C30; C: Detection of aabgl1 copy numbers in the transformants by qPCR analysis. Tef1ÃŽÄ… gene was used as a single copy control

    Supercapacitors Based on Mixed Nickel/Cobalt 2D MOF Coordination Nanosheets for Energy Storage

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    Three flexible coordination nanosheets, CoNi-nanosheet, Co-nanosheet, and Ni-nanosheet, were successfully synthesized using the liquid–liquid interfacial coordination method by the reaction of the ligand, 1,1,2,2-tetrakis­(4-(2,2′:6′,2″-terpyridyl)­phenyl)­ethylene with nickel­(II) and cobalt­(II) nitrates. The effective coordination between the ligand and metal ions is confirmed using characterization techniques including Fourier transform infrared spectra, X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy. The bimetallic nanosheet, CoNi-nanosheet, demonstrates an exceptional specific capacity of 112.0 mA h g–1 at 1 A g–1. Furthermore, the CoNi-nanosheet maintains a capacity retention of 70.07% at 5 A g–1 after 1000 cycles. Upon integration into an asymmetric supercapacitor configuration, the CoNi-nanosheet assembly attains a heightened energy density of 89.0 W h kg–1 at a power density of 800 W kg–1. Impressively, the asymmetric supercapacitor has great stability. The excellent electrochemical performance of the bimetallic CoNi-nanosheet is likely attributed to alterations of electron densities around Co2+ and Ni2+ ions
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