Producing Polyurethane as Wound Plaster using Glycerol Transesterified of Waste Cooking Oil with Moringa Leaf Extract (Moringa Oleifera Lam.) as an Antimicrobial
DOI:
https://doi.org/10.48048/tis.2023.6963Keywords:
Glycerol of WCO (waste cooking oil), Moringa leaves, Polyurethane, Wound plaster, FT-IR, Pseudomonas aeruginosa, Staphylococcus aureusAbstract
Wound plaster polyurethane can make using glycerol from waste cooking oil (WCO). Wound plasters should contain antibacterial ingredients in addition to covering the sore. Traditionally various plants have been used to treat sore and contain sundry antibacterial chemical compounds amid Moringa oleifera Lam. Therefore, it is very potential to make polyurethane wound plasters from glycerol produced from WCO combined with Moringa leaf extract obtained from wound plasters from natural ingredients. Maceration with 96 % ethanol yielded moringa leaf extract. Then, a transesterification reaction carries out by using KOH-methanol at 60 °C to get glycerol and tested by FTIR spectrophotometry. Polyurethane wound plasters were made with a mixture of methylene 4,4 diphenyl diisocyanate, polyethylene glycol (PEG) and various formulas with variations of glycerol 0, 3, 6, 9, 12, 15 and 18 drops. A characteristic test enforced with swelling test to find the best formula and functional group analysis using FTIR spectrophotometry. Into the best wound plaster, improved Moringa leaf ethanol extract at an intensity of 1 - 5 %. An antibacterial activity test carries out on the Moringa leaf ethanol extract and plasters obtained by the agar diffusion method. The FTIR spectrophotometer test showed the formation of glycerol from WCO. The results of the characteristics test for polyurethane wound plaster preparations obtained the best formula using 3 drops of glycerol. The antibacterial activity test results at a concentration of 500 mg/mL Moringa leaf extract produced a muscular inhibition zone of 19.2 mm against Staphylococcus aureus and Antiseptic solution of 17.3 mm; Pseudomonas aeruginosa of 14.3 mm and Antiseptic solvent of 16.2 mm. Antibacterial activity of polyurethane wound plaster against Staphylococcus aureus contains 5 % ethanol extract of 10.3 mm, Plaster Merck X of 11.2 mm, Pseudomonas aeruginosa, only gave resistance at 5 % concentration of 8.3 mm and Plaster Merck X of 9.2 mm.
HIGHLIGHTS
- Based on FTIR testing, it confirms the presence of aliphatic CH groups and OH groups, as well as the comparison of FTIR spectra with the raw material indicates the presence of Glycerol from Transesterification of Used Cooking Oil, and then the purification process of glycerol from used cooking oil yielded 30.4 g
- Glycerol from the transesterification reaction of WCO is used to create polyurethane wound dressings by forming urethane groups (-NHCO), as indicated by the FTIR results of the best formula using 3 drops of glycerol
- The Moringa leaf extract in the polyurethane wound dressing formula shows antibacterial activity
GRAPHICAL ABSTRACT
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