Editorial 

iq.unesp.br/ecletica 

 

| Vol. 46 | n. 2 | 2021 | 

 

 

 

Editorial 

Dear authors and readers, the Editor of Eclética Química Journal, Editorial Board and 

Staff feel happy presenting this issue which contains valuable results of important investigations 

developed in a complicated scenery due to Covid-19, but that keep alive the flame of hope for 

better times. It is well known that antibiotic resistance and the growth of new strains of bacteria 

are of great concern to the human health. It requires the development of new drugs with better 

efficiency to treat the infections caused by these human pathogens. Particularly, the commonly 

used medicinal plants of Brazilian communities may help to diminish this problem, which is the 

subject of the first article. The Moringa oleifera seed extract showed antibacterial activity against 

both Gram-positive and Gram-negative bacteria and isolated compounds like kaempferol and 

quercetin were effective against infections caused by bacteria with the order of potency 

Pseudomonas aeruginosa > Klebsiella pneumonia > Staphylococcus aureus > Escherichia coli > 

Streptococcus pneumonia. Sequentially, a compound from succinic acid and Ag+ ion was obtained 

and characterized as bidentate coordinated Ag2C4H4O4 complex. Density functional theoretical 

studies confirmed the coordination of each carboxylate group to one silver atom by the two 

oxygen and the bond lengths O···Ag theoretically determined range from 2.325 to 2.338 Å. This 

complex showed in vitro antibacterial activity against the bacterial strains of Staphylococcus 

aureus, Bacillus cereus, Escherichia coli and Pseudomonas aeruginosa complex and to be active 

over M. tuberculosis H37Rv strain. Following, microparticles (MP) containing nitrogen (N), 

phosphorus (P) and potassium (K) were synthesized with a mixture of polymers and a linear, 

precise and accurate methodology was developed to determine the NPK content. The MP can be 

applied as controlled release alternative to traditional fertilizers. Next, an emerging pollutant with 

endocrine disrupting properties, bisphenol A (BPA), present at trace levels in various aqueous 

medium, was removed by an advanced oxidation process, specifically heterogeneous 

photocatalysis using TiO2. The methodology was efficient to completely remove the BPA even 

using solar radiation as UV source. Ecotoxicological and chronic toxicity evaluations indicated 

that the post-treatment aqueous samples showed better performance compared to the initial ones. 

Closes this issue a study that consists in developing a methodology for determining α-linolenic 

acid (ALA, ω-3) and linoleic acid (LA, ω-6) in vegetable oils with ultrasound-assisted extraction, 

which was validated by high-performance liquid chromatography (HPLC) for the quantification 

of polyunsaturated fatty acids. The proposed method is simple, fast, linear, precise and accurate 

for the quantitative determination of ALA and LA in vegetable oil. 

Lastly, the Editor and members of Editorial Board of Eclética Química Journal pay a 

tribute to the effort developed by Authors and Reviewers during this confusing time by helping 

us to go ahead with mutual and essential collaboration. 

 

Assis Vicente Benedetti 

Editor-in-Chief of EQJ 
 

http://revista.iq.unesp.br/ojs/index.php/ecletica/index