Related Articles
J Nutr. 1990 Aug
Effect of calcium citrate-malate on skeletal development in young, growing rats
It has been previously demonstrated that calcium from calcium citrate-malate (CCM), a mixture of calcium, citric acid and malic acid, is better-absorbed than calcium from calcium carbonate (CaCO3) in humans and in rats. It was of interest to determine if this differential in absorption would result in differences in bone development under chronic feeding conditions.…
J Am Coll Nutr. 1996 Jun
Calcium absorption from apple and orange juice fortified with calcium citrate malate (CCM)
Objective: Determine calcium (Ca) absorption from Ca fortified orange and apple juice. Methods: Absorbability was assessed by measuring 45Ca absorption in healthy women (mean age 57 years, n = 57/group) and whole body 47Ca retention in adult female beagle dogs (n = 6/group) and young adult male rats (n = 6/group). Women received 6.24 mmol (250 mg)…
J Dairy Sci. 1996 Jan
Bioavailability of copper proteinate and copper carbonate relative to copper sulfate in cattle
Two experiments were conducted to determine the relative bioavailabilities of Cu proteinate, CuCO3, and CuSO4. In Experiment 1, 30 heifers that had been depleted of Cu were us 1. Treatments were control, Cu proteinate A, Cu proteinate B, CuCO3, and CuSO4. Sources provided 50 mg of Cu/d. Supplementation increased plasma Cu by d 21, but…
Nanotoxicology. 2018 Sep
Quantitative human health risk assessment along the lifecycle of nano-scale copper-based wood preservatives
The use of nano-scale copper oxide (CuO) and basic copper carbonate (Cu2(OH)2CO3) in both ionic and micronized wood preservatives has raised concerns about the potential of these substances to cause adverse humans health effects. To address these concerns, we performed quantitative (probabilistic) human health risk assessment (HHRA) along the lifecycles of these formulations used in…
Pharmacol Rep. 2019 Oct
The interaction between resveratrol and two forms of copper as carbonate and nanoparticles on antioxidant mechanisms and vascular function in Wistar rats
Background: Experimental studies have emphasized that cardiovascular alterations can be improved by the long-term use of resveratrol (trans-3,5,4′-trihydroxystilbene; RSV) as well as dietary copper (Cu) intake. Methods: Male Wistar rats were supplemented for 8 weeks with Cu (6.5 mg/kg diet) as either nanoparticles (40 nm, CuNPs) or carbonate (CuCO3). Half of the studied animals were supplemented with…
Nanotoxicology. 2019 Feb
Toxicity of copper oxide and basic copper carbonate nanoparticles after short-term oral exposure in rats
Copper oxide (CuO) nanoparticles (NPs) and copper carbonate nanoparticles (Cu2CO3(OH)2 NPs have applications as antimicrobial agents and wood preservatives: an application that may lead to oral ingestion via hand to mouth transfer. Rats were exposed by oral gavage to CuO NPs and Cu2CO3(OH)2 NPs for five consecutive days with doses from 1 to 512 mg/kg and 4…
Appl Microbiol Biotechnol. 2017 Oct
Biosynthesis of copper carbonate nanoparticles by ureolytic fungi
In this research, the ureolytic fungi Neurospora crassa, Pestalotiopsis sp. and Myrothecium gramineum were investigated for the preparation of nanoscale copper carbonate and the role of fungal extracellular protein in such mineral formation. After incubation in urea-modified media, carbonate-laden fungal supernatants were used for the precipitation of copper carbonate, with experimental results agreeing closely with…
Appl Microbiol Biotechnol. 2019 Sep
Amino acid secretion influences the size and composition of copper carbonate nanoparticles synthesized by ureolytic fungi
The ureolytic activity of Neurospora crassa results in an alkaline carbonate-rich culture medium which can precipitate soluble metals as insoluble carbonates. Such carbonates are smaller, often of nanoscale dimensions, than metal carbonates synthesized abiotically which infers that fungal excreted products can markedly affect particle size. In this work, it was found that amino acid excretion…
J Nanosci Nanotechnol. 2018 Jul
Synthesis of Cu Nanoparticles Using Copper Carbonate as Cu Source Toward Versatile Applications
Cu nanoparticles (NPs) coated with polyvinylpyrrolidone (PVP) were fabricated by polyol method using copper carbonate as a raw material. To increase the reaction temperature, glycol multimers such as diethylene glycol, triethylene glycol, or tetraethylene glycol were examined as a solvent. With increasing degree of multimerization, average diameter of Cu NPs decreased. The synthesis of Cu…
J Occup Environ Hyg. 2018 Apr