Results 91 to 100 of about 2,685,649 (296)

Effects of different heat treatments on the antioxidant activity and ascorbic acid content of bitter melon, Momordica charantia

open access: yesBrazilian Journal of Food Technology, 2019
This study investigated the effects of different heat treatments, namely boiling, microwaving and pressure cooking, on the reduced ascorbic acid content and antioxidant activity in Momordica charantia extracts.
Zhi Xiang Ng, Umah Rani Kuppusamy
doaj   +1 more source

Chemoselective Metabolomics via a Modular Reactivity‐Encoding Platform

open access: yesAdvanced Science, EarlyView.
Conventional LC–MS underrepresents numerous metabolites due to heterogeneous ionization efficiencies and matrix interference. Here, we introduce a modular reactivity‐encoding platform (MREP) comprising four alkyne‐tagged probes that selectively derivatize key functional groups, followed by unified click‐chemistry capture to eliminate matrix components ...
Xin Tao   +10 more
wiley   +1 more source

QRICH1 Disrupts Endoplasmic Reticulum Homeostasis and Amplifies NF‐κB Signaling in Periodontal Ligament Stem Cells to Exacerbate Diabetic Periodontitis

open access: yesAdvanced Science, EarlyView.
QRICH1 has been established as a key factor contributing to impaired osteogenic potential and accelerated apoptosis of PDLSCs in diabetic periodontitis. QRICH1 not only significantly enhances UPR‐associated apoptotic signaling but also amplifies NF‐κB‐mediated inflammatory responses. Its inhibition restores osteogenic capacity and reduces alveolar bone
Han Li   +9 more
wiley   +1 more source

Self-Powered Photoelectrochemistry Biosensor for Ascorbic Acid Determination in Beverage Samples Based on Perylene Material

open access: yesMolecules
Ascorbic acid plays an important role in the synthesis and metabolism of the human body. However, it cannot be synthesized by the human body and needs to be supplemented from exogenous food intake.
Wei Zhang   +9 more
doaj   +1 more source

Estudos pré-clínicos para caracterização do ácido ascórbico como uma nova alternativa para o tratamento da depressão [PDF]

open access: yes, 2013
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-graduação em Bioquímica, Florianópolis, 2013A bubectomia olfatória (BO) é um modelo animal de depressão bem estabelecido na literatura capaz de ...
Moretti, Morgana
core  

Black Hole Quencher‐Enhanced Plasmonic Photothermal Conversion

open access: yesAdvanced Science, EarlyView.
Researchers have developed a universal method to boost plasmonic photothermal conversion by attaching black hole quencher (BHQ) molecules to matched metal nanostructures. This hybrid approach increases efficiency by roughly threefold, reaching up to 69.1% in the near‐infrared‐II window.
Ruiyuan Zhang   +3 more
wiley   +1 more source

Changes of Ascorbic Acid Contents in Various Market Forms of Spinach (Spinacea oleracea L.) during Postharvest Storage in Light and Dark Conditions

open access: yes, 2003
Changes in ascorbic acid contents in various market forms of spinach (Spinacia oleracea L.) during postharvest storage in light (20-25 μmole m^2 s^) and dark conditions were investigated.
UEDA, Yoshinori   +2 more
core  

Hydrogen‐Bonding‐Directed Assembly of COF/Nanocluster Hybrids With Synergistic Roles for Efficient Solar Hydrogen Production

open access: yesAdvanced Science, EarlyView.
Hydrogen‐bonding‐directed assembly enables molecular‐level integration of a covalent organic framework and NiZnCo nanoclusters. The engineered interface couples directional charge transfer, multimetal synergy, and photothermal‐assisted catalysis, providing a versatile strategy for efficient noble‐metal‐free solar hydrogen production.
Ailing Pan   +5 more
wiley   +1 more source

Single‐Atom‐Enhanced Fully Inkjet‐Printed Electrochemical Sensor for Dopamine Detection

open access: yesAdvanced Science, EarlyView.
Fully inkjet‐printed paper‐based dopamine sensors are fabricated using nitrogen‐doped graphene acid functionalized with copper single atoms. The copper sites uniquely enhance dopamine oxidation through strong molecular adsorption, as verified by electrochemical measurements and DFT calculations. The approach highlights the potential of single‐atom inks
Martin‐Alex Nalepa   +11 more
wiley   +1 more source

Sustainable recovery of lithium, nickel, manganese, and cobalt from NMC811 cathodes using propionic and ascorbic acids through optimization and kinetic analysis

open access: yesScientific Reports
An environmentally benign leaching process for recovering valuable metals from LiNi0.8Mn0.1Co0.1O2 (NMC-811) cathodes was developed using propionic acid as the leaching agent and ascorbic acid as the reducing agent.
Azadeh Yarahmadi   +2 more
doaj   +1 more source

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