scholarly journals Assessment of Antioxidant Activity of Crude and Purified Bio-active Compound, Embelin in Aegiceras corniculatum (L.) Blanco: A Less-explored Mangrove Plant

2021 ◽  
Vol 55 (3) ◽  
pp. 793-800
Author(s):  
Manisha Mohapatra ◽  
Uday Chand Basak
Keyword(s):  
Antioxidant Activity ◽  
Active Compound ◽  
Mangrove Plant ◽  
Aegiceras Corniculatum

scholarly journals Designing Biodegradable and Active Multilayer System by Assembling an Electrospun Polycaprolactone Mat Containing Quercetin and Nanocellulose between Polylactic Acid Films

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1288
Author(s):  
Carol López de Dicastillo ◽  
Luan Garrido ◽  
Eliezer Velásquez ◽  
Adrián Rojas ◽  
Rafael Gavara
Keyword(s):  
Antioxidant Activity ◽  
Thermal Treatment ◽  
Polylactic Acid ◽  
Active Compound ◽  
Cellulose Nanocrystals ◽  
Barrier Properties ◽  
Electrospinning Process ◽  
Multilayer Systems ◽  
Innovative Strategy ◽  
Packaged Foods

The design of multilayer systems is an innovative strategy to improve physical properties of biodegradable polymers and introduce functionality to the materials through the incorporation of an active compound into some of these layers. In this work, a trilayer film based on a sandwich of electrospun polycaprolactone (PCL) fibers (PCLé) containing quercetin (Q) and cellulose nanocrystals (CNC) between extruded polylactic acid (PLA) films was designed with the purpose of improving thermal and barrier properties and affording antioxidant activity to packaged foods. PCLé was successfully electrospun onto 70 µm-thick extruded PLA film followed by the assembling of a third 25 µm-thick commercial PLA film through hot pressing. Optical, morphological, thermal, and barrier properties were evaluated in order to study the effect of PCL layer and the addition of Q and CNC. Bilayer systems obtained after the electrospinning process of PCL onto PLA film were also evaluated. The release of quercetin from bi- and trilayer films to food simulants was also analyzed. Results evidenced that thermal treatment during thermo-compression melted PCL polymer and resulted in trilayer systems with barrier properties similar to single PLA film. Quercetin release from bi- and trilayer films followed a similar profile, but achieved highest value through the addition of CNC.

scholarly journals Phytochemical Screening and Antimicrobial Activity from Sonneratia caseolaris Fruit Extract

2019 ◽  
Vol 967 ◽  
pp. 28-33
Author(s):  
Pagarra Halifah ◽  
Hartati ◽  
Rachmawaty ◽  
Hala Yusminah ◽  
A. Rahman Roshanida
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Candida Albicans ◽  
Ethyl Acetate ◽  
Scavenging Activity ◽  
Phytochemical Screening ◽  
Fruit Extract ◽  
Mangrove Plant ◽  
Sonneratia Caseolaris

A study out to investigate the phytochemical screening and antimicrobial activity of Sonneratia caseolaris fruit, a mangrove plant from Maros Regency, South Sulawesi, Indonesia. The Sonneratia caseolaris extract was prepared by two different solvent: ethyl acetate and ethanol 70%. We tested the extract of Sonneratia caseolaris for antioxidant activity using 1,1-diphenyl-2-picrylhydrazyl (DPPH). The phytochemicals were extracted separately with ethyl acetate and ethanol 70% by maceration. The evaluation of antibacterial activity for different solvent with different concentration of Sonneratia caseolaris fruit was measurements of inhibitory power are measured by measuring the diameter of the clear zone formed. In phytochemical test Sonneratia caseolaris fruits extracted by ethyl acetate solvent confirmed the presence of flavanoids, saponin, tannin and phenolic and extracted by ethanol 70% solvent confirmed the presence of alkaloid, saponin and phenolic. The antioxidant activity as indicated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity of the Sonneratia caseolaris fruits extract from the species was found to be quite appreciable. The antioxidant scavenging activity of Sonneratia caseolaris fruit extract by ethyl acetate solvent was 0.38% and by ethanol solvent was 0.08%. Antimicrobial activity of Sonnerati caseolaris fruits ethyl acetate extract obtained significant was from P<0.05 of Escherechia.coli and Candida albicans but not significant of Staphylococcus aureus. The Sonneratia caseolaris extracted by ethanol 70% solvents was highly promising among Escherichia coli, Staphylococcus aureus and Candida albicans with level of significance was from P <0.05. The study suggests Sonneratia caseolaris fruits as a potential source of bioactive compounds with stable antioxidative and antimicrobial properties and can be used as natural antimicrobial/antioxidative agents in clinical, pharmaceutical and food processing industries.

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