Results 61 to 70 of about 18,197,302 (162)

Characterization of a novel phenol hydroxylase in indoles biotransformation from a strain Arthrobacter sp. W1 [corrected]. [PDF]

open access: yesPLoS ONE, 2012
Indigoids, as popular dyes, can be produced by microbial strains or enzymes catalysis. However, the new valuable products with their transformation mechanisms, especially inter-conversion among the intermediates and products have not been clearly ...
Yuanyuan Qu   +6 more
doaj   +1 more source

A Unified Photoredox Platform for Divergent Dual C─H/N─H Selenylation to Access N,C‐ and C,C‐Diselenides

open access: yesAsian Journal of Organic Chemistry, Volume 15, Issue 8, August 2026.
We report a visible‐light photoredox‐catalyzed strategy for the divergent dual selenylation of inert C─H and N─H bonds. Using a single catalytic system with Ru(bpy)3Cl2·6H2O and diselenides, arylamines and indoles are selectively converted to distinct N,C‐ or C,C‐disubstituted organoselenides, respectively. ABSTRACT We report a visible‐light photoredox‐
Fengxiang Zhu, Ying Hou, Xiao‐Feng Wu
wiley   +1 more source

Enhancing the Skatole Degradation Capacity of Lactococcus lactis NZ9000 Through the Heterologous Expression of the Ska Enzyme from Acinetobacter piscicola p38

open access: yesFermentation
Skatole is a harmful, odorous pollutant in livestock manure. Skatole-degrading strains are mostly harmful Gram-negative bacteria, whereas safe Gram-positive strains demonstrate poor degradation performance, limiting bioremediation applications.
Zhonghao Wang   +11 more
doaj   +1 more source

Lactiplantibacillus plantarum AS21 Attenuates Sex‐Biased Glucose Intolerance in Aging Mice via Gut Mucosal Microbiota‐Derived Citrulline

open access: yesAging Cell, Volume 25, Issue 8, August 2026.
Aging induces sex‐differential glucose intolerance, with male‐specific citrulline depletion. Lactiplantibacillus plantarum AS21 elevates microbiota‐derived citrulline metabolism and enhances GLP‐1 secretion, improving glucose homeostasis. ABSTRACT Aging‐related metabolic decline, particularly impaired glucose tolerance, represents a growing challenge ...
Mengya Jia   +9 more
wiley   +1 more source

Singlet oxygen reactivity in water-rich solvent mixtures

open access: yesQuímica Nova, 2008
The 3-methylindole (3MI) oxygenation sensitized by psoralen (PSO) has been investigated in 100%, 20% and 5% O2-saturated water/dioxane (H2O/Dx) mixtures. The lowering of the ¹O2* chemical rate when water (k chem∆3MI = 1.4 × 109 M-1 s-1) is replaced
Cristina Sousa   +2 more
doaj   +1 more source

Synthesis of 2‐Aminotetralins via Pd‐Catalyzed Alkene Difunctionalization Reactions: Use of Ligand Structure to Suppress Facile Intramolecular 5‐Exo‐Heck Reactions

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 13, 2 July 2026.
Aryl triflates that contain ortho‐butenyl groups typically undergo facile intramolecular Pd‐catalyzed Heck reactions to form indene derivatives. However, these substrates can instead be coupled with amines in Pd‐catalyzed alkene difunctionalization reactions to generate 2‐amino tetralins and/or 1‐aminomethyl indanes when a catalyst composed of Pd2(dba ...
Andrew Cruz, John P. Wolfe
wiley   +1 more source

Mining for Novel Tryptophanase A: Extremophilic Organisms Ardenticatena maritima and Haloarcula japonica as Alternatives to E. coli in the Synthesis of Tryptophan Analogues

open access: yesChemCatChem, Volume 18, Issue 14, 29 July 2026.
Novel extremophilic tryptophanases (TnaAs) are tested in the synthesis of L‐tryptophan analogues. This study compares a thermophilic and a halophilic TnaA with E. coli TnaA as benchmark, from both structural and catalytic perspectives, revealing enhanced stability, and a broader substrate scope for the new homologues.
Fatemeh Aziziyan   +6 more
wiley   +1 more source

Photooxidation of 5,6-dihydroxy-1-methylindole.

open access: yes, 1987
The photooxidation of 5,6-dihydroxy-1-methylindole was ...
G.PROTA.   +3 more
core   +1 more source

Formation Mechanisms of Odor Substances in Mutton and Deodorization Methods: A Review [PDF]

open access: yesShipin Kexue
Mutton is a high-quality meat with high nutritional value. However, the typical species-specific flavor (odor) of mutton affects its quality and limits its consumer acceptance.
YANG Dongsong, GAO Shuang, YUAN Hong, ZHAO Wenxiu, LUO Yulong, LUO Ruiming, HOU Yanru
doaj   +1 more source

Influence of substrate freshness on metabolite dynamics and methane emissions from pig slurry during laboratory incubation

open access: yesJournal of Environmental Quality, Volume 55, Issue 4, July/August 2026.
Abstract Freeze/thaw pretreatment is commonly applied to animal slurry samples in laboratory studies, but its impact on organic matter transformation and methane (CH4) emissions remains uncertain. In this study, slurry incubations were performed at 20°C with three treatments differing in freshness of feces, urine, and inoculum.
Rui Wang   +3 more
wiley   +1 more source

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