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All Journal IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)
Eliza Eliza
Sriwijaya University
Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science

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Study of Effect of Weight Ratio on Copolymerization of Chitosan and Acrylamide Eliza Eliza; Desnelli Desnelli; Ady Mara; Fahma Riyanti
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 6, No 3 (2021): October 2021
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v6.i3.96

Abstract

The use of chitosan as adsorbent in wastewater treatment has received a lot of attention. This is because the price of chitosan is cheap and easy to obtain. The application of chitosan as an adsorbent has the disadvantage of being soluble in acidic medium (pH <6.5), insoluble in water and organic solvents. Other disadvantages of chitosan are low adsorption capacity, and lack of selectivity. In this research, chitosan copolymer synthesis with acrylamide has been carried out by varying chitosan and acrylamide, namely 1:1, 2: 3 and 3: 2 using a microwave oven. The copolymers were characterized using FTIR, XRD, SEM and TGA/DTA. The results of the synthesis of chitosan copolymer with acrylamide were obtained the largest percentage of grafting at a ratio of 2: 3.  From the results of FTIR analysis showed that the copolymer had been successfully synthesized. XRD analysis showed that the copolymers synthesized have amorphous properties compared to chitosan. The results of SEM analysis, the copolymers had a porous structure. Thermal analysis showed that the copolymers have better thermal stability than chitosan. The chitosan-acrylamide copolymer which was synthesized in a ratio of 2: 3 has better properties.
Some of South Sumatran Plants Containing Alkaloids Eliza Eliza; Dasril Basir
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 1 (2022): February 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i1.32

Abstract

A phytochemical survey for alkaloid-containing plants has been conducted in South Sumatra including traditional medicinal plants. During the survey 180 satisfactory herbarium sample were obtained and all of them were tested for alkaloids. The results showed that 33 species gave a positive test for alkaloids, and high alkaloid contents were shown by: Alstonia scholaris, Alstonia angustiloba, Ervatamia coronariaa, Voacanga foetida Bl. K. Schum, Litseaacceden toides K & V, Litsea angualata, Litsea tomentosa, Fibraurea chloroleuca Miers (root), and Uncaria cordata (Lour.) Merr. The aboved survey was also continued to be an intensively phytochemical work focusing on alkaloid of Fibraurea chloroleuca Miers root.  A quaternary isoquinoline alkaloid as a yellowish crystal, m.p. 214-215 oC; MS (FAB) m/z 352 has been successfully isolated and tested for antibacterial activity.  This isolated alkaloid significantly inhibited Bacilus substilis, Shigela dysentriae, Staphylococus aireus, and Pseudomonas sp growth at 1 mg/mL. As a result, all of these alkaloid-containing plants are potential to explore their alkaloids and utilitarian for traditional medicines.Keywords: Alkaloids, traditional, medicines, south sumatra, plants
Co-Authors Ady Mara, Ady Dasril Basir Desnelli Desnelli Fahma Riyanti