Hydrogels are very attractive materials due to their multifunctional properties. Many natural polymers, such as polysaccharides, used for the preparation of hydrogels. The most important and commonly polysaccharide is alginate because its biodegradability, biocompatibility, non-toxicity. Since properties hydrogel application depend on numerous factors, this study aimed optimize gel composition enable growth inoculated cyanobacterial crusts suppressing desertification process. influence...

Sulfonamides are the first successfully synthesized antimicrobial drugs. The mechanism of sulfonamides action involves competitive inhibition folic acid synthesis which prevents growth and reproduction microorganisms. Due to this action, belong group bacteriostatic agents. Although they have been applied in therapy for more than 70 years, still drugs choice treatment several conditions diseases. A wider application is limited by bacterial resistance side effects. Antimicrobial their...

The aim of this study was to optimize the ultrasound-assisted extraction phenolic compounds from black locust (Robiniae pseudoacaciae) flowers using central composite design. ethanol concentration (33–67%), temperature (33–67 °C), and time (17–33 min) were analyzed as factors that impact total content. liquid-to-solid ratio 10 cm3 g−1 same during extractions. optimal conditions found be 59 °C, 60% (v/v) ethanol, 30 min. content (TPC = 3.12 gGAE 100 dry plant material) antioxidant activity...

The paper was aimed at developing an ultrasound-assisted extraction of carotenoids from orange peel using olive oil as a solvent. A central composite design used to define the optimal conditions for their extraction. Under (extraction time 35 min, temperature 42 ℃, and liquid-to-solid ratio 15 mL/g), experimental predicted values carotenoid content were 1.85 1.83 mg/100 g dry weight, respectively. agreement these indicated adequacy proposed regression model. only had negative influence on...

The recovery of bioactive compounds from waste and modification their properties by encapsulation are the main challenges today. In this study, ultrasound-assisted extraction antioxidants orange peels was optimized using a central composite design. Ethanol (50%, v/v) solvent choice for extraction. obtained total antioxidant contents were fitted second-order polynomial equation. optimal conditions time 30 min, temperature 60 °C, liquid-to-solid ratio 15 mL/g. After that, extract encapsulated...

The aim of the paper was to develop simple procedures for preparation inclusion complexes ellagic acid (EA) with cyclodextrins (CDs) and investigate their antioxidant antimicrobial activity.The structural characterization carried out using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), nuclear magnetic resonance (NMR) methods. phase solubility technique used interactions between 'host' 'guest' molecules estimate molar ratio them. activity EA were determined.The...

Abstract Objectives An inclusion complex of biochanin A (BCA) with (2-hydroxypropyl)-β-cyclodextrin (HP-β-CD) was prepared in the ethanol solution to improve its water solubility. Methods Using FTIR, 1H-NMR, XRD, DSC and SEM methods, structural characterization analysed. Key findings The phase-solubility study has shown that solubility BCA increased twofold 42% (v/v) after complexation HP-β-CD. between HP-β-CD molar ratio 1 : 1. antibacterial activity investigated against various bacteria,...

Storage of a great amount plum kernel waste becomes challenge for food industry. In this work, the seed was used as source fixed oil that can be an ingredient commercial products. Soxhlet extraction carried out using different solvents, such n-hexane, n-heptane, ethyl acetate, acetone, or chloroform:methanol mixture (2:1 v/v). The highest yield (about 30%) obtained n-heptane and while lowest acetate. analysis physico-chemical parameters indicated all samples have exceptional quality. Schaal...

Black locust flower extract contains various polyphenols and their glucosides contribute to the potential health benefits. After intake of these bioactive compounds passage through gastrointestinal tract, degradation can occur lead a loss biological activity. To overcome this problem, should be protected from environmental conditions. This study aimed encapsulate black in microparticles based on biodegradable polysaccharides, alginate, chitosan. In extract, total antioxidant content was...

The ultrasound-assisted extraction process with microwave pretreatment was modeled and optimized to maximize the yield of antioxidants from green walnut husks using a response surface methodology Box–Behnken design. In this design, time (10–40 min), temperature (40–60 °C), (20–60 s) were selected as factors, while total antioxidant content defined response. solvent choice for extracting 50% (v/v) ethanol. After optimization desirability function, an 23 min, 60 °C, s proposed optimal...

The process of amygdalin extraction from plum seeds was optimized using central composite design (CCD) and multilayer perceptron (MLP). effect time, ethanol concentration, solid-to-liquid ratio, temperature on the content in extracts estimated both mathematical models. MLP 4-3-1 with exponential function hidden layer linear output used for describing process. model more superior compared CCD due to better prediction ability. According model, suggested optimal conditions are: time 120 min,...

This study aimed to improve the conventional procedure of alginate isolation from brown seaweed (Laminaria digitata L.) biomass and investigate possibility further valorization ethanolic fraction representing byproduct after degreasing depigmentation biomass. The acid treatment supported by ultrasound was modeled optimized regarding yield using a response surface methodology based on Box–Behnken design. A time 30 min, liquid-to-solid ratio mL/g, temperature 47 °C were proposed as optimal...

Abstract Adsorption of Fe(III) from water was optimized using response surface methodology and artificial neural network. The initial concentration Fe(III), contact time, adsorbent were defined as input variables, while the percentage adsorbed labeled output variable. Bentonite clay served an adsorbent. correlation coefficient, root mean square error, absolute error calculated after fitting experimental data by second‐order polynomial model at central composite design (CCD). multilayer...

The aim of this paper was the identification bioactive compounds in green tea extract enriched with quercetin. extraction performed under reflux for 60 min using absolute ethanol at solid-to-liquid ratio 1:18 (m/v). mass spectrometry method an electrospray interface applied and tuned quercetin standard. Mass spectra were recorded negative positive ionization modes ion source voltage 4.95 kV, current 2.61 μA, capillary temperature 275 °C, 50 V, sheath gas pressure 137 KPa auxiliary 13.9 KPa....