C&EN3d
Chitosan Schiff-Base Hydrogel Sunscreen: A Multifunctional Hybrid Network with Antioxidant, Ultraviolet-Shielding, and Self-Healing Properties
Chitosan with a medium molecular weight (190,000–310,000 Da) and deacetylation degree of ∼75–85% and 2,2-diphenyl-1-picrylhydrazyl (DPPH) were procured from Sigma-Aldrich. 2,4-Dihydroxybenzaldehyde ...
SciELO17d
New discoveries of the action of L-ascorbic acid (vitamin C) - Enhanced efficacy in formulations
Antioxidant activity was assessed using a DPPH assay, and L-AA content was quantified by ... Reagents: 1.1.3.3-Tetramethoxypropane (Sigma-Aldrich); 2.2-difenil-2-picrilhidrazila (Sigma-Aldrich); ...
SciELO15d
Synthesis of Hydroxybenzodiazepines with Potential Antioxidant and Antifungal Action
All reagents and solvents were used as purchased from Sigma-Aldrich (São Paulo, Brazil ... compound to eliminate 50% of the initial concentration of free radicals) of DPPH was calculated based on the ...
Frontiers18d
Short-term severe drought influences root volatile biosynthesis in eastern white pine (Pinus strobus L)
Ten replicates per treatment was used in DPPH assays. For the VOC analysis the seedling ... USA), SPME fiber assemblies (Supelco, PDMS/DVB/CAR; Sigma–Aldrich, St. Louis, MO, USA), and headspace ...
Frontiers19d
Oolonghomobisflavans exert neuroprotective activities in cultured neuronal cells and anti-aging effects in Caenorhabditis elegans
EGCG (≥95%), Dimethyl sulfoxide (DMSO), Dulbecco’s modified eagle medium (DMEM), Fetal bovine serum (FBS), L-glutamic acid were purchased from Sigma-Aldrich (United States ... When tested in the DPPH ...
Forbes10d
Sigma-Aldrich
Sigma-Aldrich Corporation is a life science and high technology company. The Company develops, manufactures, purchases and distributes a range of chemicals, biochemicals and equipment globally.
Motley Fool Australia24d
Halted: What's going on with Sigma shares today?
Sigma investors would be holding their breath right now. That's because Sigma Healthcare shares are not active on the ASX today. The healthcare stock closed at $3.03 a share yesterday after ...
Motley Fool Australia24d
Sigma share price jumps 12% on big Chemist Warehouse news
The Sigma Healthcare Ltd (ASX: SIG) share price is having a strong start to the week. In afternoon trade, the pharmacy chain operator and wholesaler's shares are up 12% to $3.02. This follows the ...
CIO22d
What is Six Sigma? Streamlining quality management
Six Sigma is a quality management methodology used to help businesses improve current processes, products, or services by discovering and eliminating defects. The goal is to streamline quality ...
The Australian25d
Chemist Warehouse earnings flying as clock ticks down on Sigma Healthcare merger
The announcement drove Sigma shares 7.8 per cent higher in early trade on Tuesday to $2.91. Sigma shareholders are sitting on outsized gains since the proposed merger was announced on December 6 ...
PGA Tour21d
Five things to know: Aldrich Potgieter, the 20-year-old, long-hitting rookie in contention at Farmers Insurance Open
LA JOLLA, Calif. – Aldrich Potgieter wasn’t sure how to explain it, he’s just always been good. Asked on Friday why he has progressed so quickly in golf, Potgieter, 20, mustered this answer ...