This reaction is refluxed in a waterbath for two hours and their volume were reduced to 70% of it’s original volume and residue was obtained. The coloured product obtained was filtered under suction, washed with ethanol. The product were recrystallized from ethanol. Their yields ranges from 50-55%, the product obtained were pinkish colour and melting point was 2020C. Step-III: Synthesis of Cr(II) Complexes: The Schiff's base complexes were synthesized by mixing the Schiff's base (1.5 g) in ethanolic solution of Chromium chloride [CrCl2].
A total of 30 g of seaweed Sargassum sp. washed and dried. The dried seaweed soaked in a solution of 0.4% formalin for 6 hours and 1% HCl solution for 1 hour and then washed with distilled water to pH neutral. Furthermore, seaweed cut added a solution of Na2CO32% with a ratio of 1:30 (w/v). Subsequently extracted by Microwave at power level 70 for 16 minutes and then filtered.
One millilitreer of the lichen extract (1 mg/mL) in a volumetric flask was diluted with distilled water (46 mL), and the content was mixed in a volumetric flask after adding. oOne millilitreer of Folin-Ciocalteu reagent was added and the content of the flask was mixed. thoroughly . After 3 min, 3 mL of 2% sodium carbonate (2 %) was added and then was allowed to standleft for 2 h with intermittent shaking. The reaction absorbance of prepared mixture absorbance was measured at 760 nm in a spectrophotometer (Jenway UK).
Then the leaves were washed to remove dirties such as dust then drying in the dark at 20 °C and then crushed (Moulinex Miller, France) (20 mesh). Extraction of olive leaves The ground leaves were extracted in deionized water, 80 % acetone, 80 % ethanol, and 80 % methanol at a concentration of 20 % (w/v). The mixtures were mixed at room temperature for 2 hours using a rotary shaker (New Brunswick Scientific, USA) at 180 rpm and then at 37 °C for 15 minutes in an ultrasonic bath (Bandelin Electronic-RK-103 H, Germany). The mixtures were filtered through Whatman no:4 and then through a membrane filter (0.45 µm). The concentration of the supernatant was achieved through the use of rotary evaporator under low
Then, the test media is then incubated at 37 ° C, for 18-24 hours. Rinsing reusable instruments The samples were rinsed with 40 ml of pyrogen-free water using a glass beaker that is free from pyrogens. Endotoxin testing using STV A total of 0,2mL from the water obtained from the rinsing was placed in the STV containing LAL reagent and was shaken for 20 to 30 seconds. Then STV was placed in an incubator at 37 ° C for 60 ± 2 minutes. STV was then observed by reversing the reaction tube in one smooth motion.
Stored in light glass bottle. 2.5.2: Formation of PANI(CoFe2O4) 0.1g of Nano material and 50ml of Aniline hydrochloride were mixed in a beaker. Then 50ml of Ammonium peroxydisulphate was added drop wise in reaction mixture with constant stirring below 20 oC. After 24 hours the coated sample was filtered, washed and dried at 60 oC in oven and then grinded into a fine powder in agate
The mixture was then distilled. When the temperature was reached to about 59℃, half vial of distillate (1V) and 1 mL of the liquid residue (1L) were collected. For 61.0℃, the distillation was then continued. Samples (2V, 2L) were taken at about 61.0℃. For 63.0℃, the flask was cooled when the solution in the flask become almost empty.
Four solvents were used for the extraction of the plant material. They were as follows i) N hexane ii) Petroleum ether iii) Methanol iv) Chloroform The powdered plant material (50 gm) was successively extracted in a Soxhlet extractor with an elevated temperature using 250 ml of n-hexane, followed by petroleum ether, methanol and chloroform, according to increasing solubility. All extracts were filtered individually and poured on petri dishes to evaporate the solvents from the extracted material. After drying, crude
2.3. Preparation procedure for DS loaded PC-SA combined beads The ionotropic gelation method was used for the preparation of DS loaded PC-SA bead. The gum (PC) was dissolved in distilled water and initially boiled for 10 minutes, then cool and keep stirring for 24 hours at 400 RPM. Then filtration
The acetanilide/glacial acetic acid mixture was stirred carefully, but effectively, until all acetanilide dissolved. While still stirring, 6 mL of bromine solution were added, after which stirring was continued for another 20 minutes. At the end of this period, the reaction was quenched by adding 30 mL of water and 6mL of saturated sodium bisulfide, again while keeping the mixture well stirred. Stirring was continued until the red colour (indicating an excess of the bromine) disappeared. The boiling tube was then cooled in an ice-water bath for 15 minutes.