Encapsulation of curcumin in CD-MOFs: promoting its incorporation into water-based products and consumption

2021 ◽  
Author(s):  
Qianyu Sun ◽  
Jie Sheng ◽  
Rendang Yang

Curcumin has received considerable interest in functional food areas due to its variety of biological effects. However, its utilization is often limited by its insolubility and instability in aqueous solutions....

1999 ◽  
Vol 39 (1) ◽  
pp. 647 ◽  
Author(s):  
G.A. Oliver ◽  
S.J. Fisher

The effects and persistence of non-water-based drilling fluids discharged into the marine environment were investigated at three locations on Western Australia's North West Shelf (NWS), namely the North Rankin 4A' (NRA) drilling platform, the Wanaea–6 production well and the Lynx–la exploration well. For the multiple-well drilling operation at NRA, acute biological effects at the completion of drilling were restricted to within 400 m in the direction of the prevailing current. High total petroleum hydrocarbon (TPH) concentrations within the NRA cuttings pile persisted between 1991 and 1993. Away from the cuttings pile itself, a consistent downward trend in TPH concentrations was evident, indicating an approximate half-life of one year for surface sediments. Three years after the completion of drilling at Wanaea–6, biological effects appeared to be limited to within 100 m of the cuttings discharge point, with background concentrations of TPH and trace metals occurring near 1,200 m in the direction of the prevailing current. Sediment hydrocarbon concentrations greater than 1 mg/kg were found to be restricted to within 200 m of the cuttings discharge point. Dramatic reductions in TPH and barium concentrations occurred in the 12-month period between the completion of drilling and the follow- up survey at Lynx–la. The reductions are attributed to sediment dispersal mechanisms which appear to play a major role in reducing sediment TPH and trace metal concentrations in mid-shelf water depths (70–80 m) on the NWS. The installation and presence of subsea production facilities may result in sediment redistribution and changed dispersal mechanisms, complicating the interpretation of the presence of contaminants within sediments.


2019 ◽  
Vol 48 (33) ◽  
pp. 12407-12420 ◽  
Author(s):  
Luis D. Rosales-Vázquez ◽  
Josue Valdes-García ◽  
Iván J. Bazany-Rodríguez ◽  
Juan M. Germán-Acacio ◽  
Diego Martínez-Otero ◽  
...  

Sensitive and direct sensing of cyanide in buffered aqueous solutions at pH = 7.0 by three new blue photoluminescent zinc-1,4-cyclohexanedicarboxylato coordination polymers bearing di-alkyl-2,2′-bipyridines has been achieved.


2007 ◽  
Vol 80 (1) ◽  
pp. 139-158 ◽  
Author(s):  
M. Virtudes Navarro-Bañón ◽  
M. Mercedes Pastor-Blas ◽  
José Miguel Martín-Martínez

Abstract As environmental friendly alternative to the halogenation treatment with trichloro isocyanuric acid solutions in organic solvents (TCI/MEK), in this study a water-based surface treatment for rubber materials based in chloramine T aqueous solutions has been proposed. It was found that the effectiveness of chloramine T (CT) (N-chloro-sodium-p-toluenesulphenamide) as chlorinating agent for rubber depends on the pH of the chlorinating solution. The surface modifications and adhesion in one SBS rubber treated with aqueous solutions of CT has been studied. Acidification of CT aqueous solutions produced the formation of dichloramine T (DCT) and hypochlorous acid (HClO), species which reacted with C = C bonds of the butadiene units. A decrease in the pH of the CT aqueous solutions produced more extended surface modifications and improved adhesion properties in the joints produced with chlorinated SBS rubber and waterborne polyurethane adhesive. T-peel strength values obtained were slightly lower than those obtained for the SBS rubber surface treated with the organic solvent chlorinating system (TCI/MEK). The solvent effect leading to local swelling and therefore to deeper modifications in the rubber near surface properties was not present with water based solutions, and then, the modifications were much more superficial. On the other hand, acidification with hydrochloric acid produces deposition of NaCl crystals on the SBS rubber surface. Thus, acidification of the chloramines T solution with sulfuric acid was preferable.


2019 ◽  
Vol 7 (1) ◽  
pp. 69-77 ◽  
Author(s):  
Nina Winkler ◽  
Rachmat Adhi Wibowo ◽  
Wolfgang Kautek ◽  
Giovanni Ligorio ◽  
Emil J. W. List-Kratochvil ◽  
...  

High-quality Ga2O3 films are obtained by spray pyrolysis from aqueous solutions through optimization of the solution composition and the spraying process parameters.


2021 ◽  
Vol 17 (2) ◽  
pp. 681-684
Author(s):  
Sunil Kumar ◽  
Shivam Singh ◽  
Akshay Kumar Ruhela ◽  
Rohit Bhatia ◽  
Subham Saurabh ◽  
...  

Mushroom are eaten and liked by people all over the world not only because of their taste, aroma or nutritive values in food but also because of their medicinal properties. They are beneficial for human or animal health due to presence of active polysaccharide which boosts our immune system as well as prevent cell or microorganism growth which is harmful for our body. The extracted drug and oral doses both are efficient in prevention of many harmful biological effects like HIV, polio, inflammation, cancer, tumor, or virus growth. With their potential value and scavenging effect they are most significant functional food and can be used us food supplement.


Antioxidants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1037
Author(s):  
Ivana Jukić ◽  
Nikolina Kolobarić ◽  
Ana Stupin ◽  
Anita Matić ◽  
Nataša Kozina ◽  
...  

Carnosine is a dipeptide synthesized in the body from β-alanine and L-histidine. It is found in high concentrations in the brain, muscle, and gastrointestinal tissues of humans and is present in all vertebrates. Carnosine has a number of beneficial antioxidant properties. For example, carnosine scavenges reactive oxygen species (ROS) as well as alpha-beta unsaturated aldehydes created by peroxidation of fatty acid cell membranes during oxidative stress. Carnosine can oppose glycation, and it can chelate divalent metal ions. Carnosine alleviates diabetic nephropathy by protecting podocyte and mesangial cells, and can slow down aging. Its component, the amino acid beta-alanine, is particularly interesting as a dietary supplement for athletes because it increases muscle carnosine, and improves effectiveness of exercise and stimulation and contraction in muscles. Carnosine is widely used among athletes in the form of supplements, but rarely in the population of cardiovascular or diabetic patients. Much less is known, if any, about its potential use in enriched food. In the present review, we aimed to provide recent knowledge on carnosine properties and distribution, its metabolism (synthesis and degradation), and analytical methods for carnosine determination, since one of the difficulties is the measurement of carnosine concentration in human samples. Furthermore, the potential mechanisms of carnosine’s biological effects in musculature, metabolism and on immunomodulation are discussed. Finally, this review provides a section on carnosine supplementation in the form of functional food and potential health benefits and up to the present, neglected clinical use of carnosine.


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