Humic acids (HA), a major component of humus or soil, was explored as a selective depressant for molybdenite during the flotation separation of molybdenite and chalcopyrite. Microflotation tests on single minerals revealed that chalcopyrite flotation was not affected by HA from pH 3 to 11, while...
This study achieved effective extraction of humic acid from sludge fermentation liquid, and the inhibition of urease activity by the extract were investigated in the urea decomposition. The addition of extract could remarkably inhibit urease activity and extend the releasing time of ammonia nitr...
Although the thermodynamic quantities (Gibbs free energy, reaction enthalpy, and entropy) of the complexation of humic acid are necessary for the discussion of the reaction thermodynamics, their accurate determination, especially concerning dissolved humic acid in deep groundwater, has not been ...
A fast, convenient and commercially available approach for analyzing humic acid content in fertilizer using headspace gas chromatography (HS-GC) is presented in this paper. Humic acid is converted into carbon dioxide based on the oxidation of humic acid in strong acidic medium and can be measure...
The influence of humic acid on the flotation of galena under different redox conditions was studied based on micro-flotation experiment. The results showed that the humic acid was an effective inhibitor for moderately oxidized galena. Adsorption tests indicated that the surface oxidation played ...
The main aim of this work was to study the mechanisms of interaction between iron(II) ions and humic acids as a function of pH, iron concentration and various humic acids chemical properties, including the degree of humification, elemental composition, aromaticity and content of acidic functiona...
The techniques of partition and adsorption chromatography as well as counter-current distribution have been applied to alkaloidal concentrates from both sabadilla and veratrine. Whereas sabadilline previously was considered to consist of a single alkaloidal constituent, the present work has resu...
Aloin, the major anthraquinone in aloe exudates and gels, has been shown to be an effective antioxidant and anti-inflammatory agent. We studied the antitumor effects of aloin in human non-small cell lung cancer cells. The treatment of lung cancer cells with aloin suppressed cell growth in a time...
Ultrasound assisted extraction (UAE) intensifies the kinetic of the extraction process by acting upon the interfacial area, through the disintegration of particles. Compared with batch extraction, it improves the extraction process decreasing both extraction time and temperature while increasing...
Enhancement of immune system seems to be the most promising method of preventing fish diseases. Several herbal products have immunostimulant properties, and are environmental friendly, economical and can act against a broad spectrum of pathogens. Present study was designed with an aim to evaluat...
Oxidative stress is considered as major culprit for neurodegenerative diseases and triggers cognitive and memory impairments. The present study mainly aimed to study the protective effects and underlying mechanisms of aloin on d-galactose (d-gal) induced ageing mice. Our results demonstrated tha...
Clinical multiple acute trauma has brought great suffering for patients. The use of traditional Chinese medicine provides a new approach to treating trauma. Aloe Vera gel has been used to treat skin diseases for a long time, but its efficacy is not stable. As the most important part of the organ...
Aloin is the major anthraquinone glycoside obtained from the Aloe species and exhibits anti-inflammatory and anti-oxidative activities. Here, we aimed to determine the effects of aloin on heme oxygenase-1 (HO-1) induction and on the expressions of inducible nitric oxide synthase (iNOS) and cyclo...
Background: Millions of people are infected by the influenza virus worldwide every year. Current selections of anti-influenza agents are limited and their effectiveness and drug resistance are still of concern.Purpose: Investigation on in vitro and in vivo effect of aloin from Aloe vera leaves a...
Aloin is the major anthraquinone glycoside obtained from the Aloe species and exhibits anti-inflammatory and anti-oxidative activities. However, the renal protective effects of aloin and underlying molecular mechanism remain unclear. This study was initiated to determine whether aloin could modu...
The lantibiotic nisin is used as a food additive to effectively inactivate a broad spectrum of Gram-positive bacteria such as Listeria monocytogenes. In total, 282 L. monocytogenes field isolates from German ready-to-eat food products, food-processing environments and patient samples and 39 List...
Nisin has been extensively employed in food industry as an antimicrobial peptide, but the proteolytic degradation and interference by food components resulted in the decrease of its antimicrobial activity. This study intends to explore the protective effect of β-cyclodextrin (β-CD) on nisin an...
The Response Surface Methodology (RSM) was used to establish a predictive model of inactivation of S. flexneri using ultrasound time of 5–20 min, pH of 4.0–7.0 and nisin concentration of 29.1–291.1 μM as independent variables. In addition, a survival of S. flexneri at 7 °C for 120 h after t...
Antimicrobial biodegradable films based on PVA-AHSG incorporated with nisin were prepared. These films were characterized for their ability to control the overall release rate of nisin into foods, which would be needed for active food packaging. The objectives of this study were to assay the bio...
Nisin is a natural antimicrobial agent and food-grade material, while the poor stability and short duration of antimicrobial activity limit its widespread use in the food industry. In the present work, soluble soybean polysaccharide (SSPS)-based nanoparticles have been developed to improve the s...
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View