herland satriawan

Serotonin analgesics from banana (Musa paradisiaca) fruit have been investigated to determine potential interactions with serotonin 1 b (5-HT1b) receptors at the molecular level. The study utilized an in silico approach to predict the interaction between serotonin analgesics and receptor proteins. The research method involved the use of Pymol, MOE 2015, Discovery Studio, and Lipinski Rule software. The use of Pymol and MOE was used for visualization of the molecular structures of serotonin analgesics and receptor proteins. Discovery Studio was used to analyze the interaction between serotonin analgesic and receptor protein, which revealed the presence of binding between the two with Binding Affinity of -5.1297 and -11.1061 and RMSD of 1.7373 and 3.7057. In addition, analysis by Lipinski Rule revealed the molecular characteristics of the serotonin analgesic, including a mass of 196, no hydrogen bond donor, two hydrogen bond acceptors, a log P of 3.023, and a molar reactivity of 56.390. These results demonstrate the analgesic potential of serotonin in interacting with serotonin 1 b (5-HT1b) receptors, which may form the basis for further research in drug development related to serotonin-based pain treatment.

Herbal medicines are currently widely used, both in developing and developed countries. Herbal medicines with combinations of ingredients have complex chemical compositions, so identification of therapeutic effects is needed to support the use of these drugs in clinical decisions. The study aims to identify the therapeutic effects of the herbal medicine Sambiloto-Ginger-Turmeric (SIJAKUN) using in silico. A search for secondary metabolites in Sijakun was obtained from the KnapSack database, and then treatment predictions were carried out using WAY2DRUGPASS. After that, pharmacokinetic analysis was carried out using SwissADME. Protein targets that can interact with SIJAKUN using STITCH DB and SEA targets. Hypergeometric Test with Multiple Testing Correction Benjamini-Hochberg False Discovery Rate (FDR) was used as a statistical test. The combination of herbal medicine SIJAKUN has dominant properties as an anti-inflammatory and P53 stimulant via the JUN/AP-1 pathway. SIJAKUN meets the pharmacokinetic criteria to be used as a drug. However, it is less effective for absorption in the intestine. SIJAKUN can be used as an anti-inflammatory and anti-apoptosis drug, but laboratory tests and further research are needed regarding drug preparations to increase absorption in the intestine.

Corn stalk can be used as a potential adsorbent because of its abundance, cost-effectiveness, and accessible functional groups that allow chemical modifications. This study aims to synthesize cellulose xanthate alginate beads (ACX beads) from corn stalks to remove methylene blue from aqueous solutions. ACX beads with various doses of porogen CaCO3 were printed using the ionic gelation method, and then characterized using FTIR, optical microscopy, and SEM-EDX. The results of the FTIR analysis reported changes in the C-S, C=S, and S-C-S vibrations that indicated the xanthate formation. Furthermore, as the porogen dose increased, the OH intensity decreased. The high intensity of the OH group results in a high swelling process. The results of the optical microscopy analysis showed that the porogen made the ACX beads spherical. SEM-EDX analysis showed that the higher the porogen dose, the rougher the surface morphology of the ACX beads and the larger the pore diameter. The maximum adsorption capacity was obtained on ACX beads without porogen with a contact time of 360 hours. The study reveals that the kinetic adsorption followed a pseudo-second-order kinetic model proposed chemical adsorption. The larger the porogen, the more crosslinks between the divalent cations and alginate or cellulose that are formed, inhibiting the bond between the ACX beads and water and methylene blue, thereby reducing the swelling process and the adsorption capacity of the ACX beads. In addition, the pore size that is too large does not match the size of the methylene blue molecule.