AI Article Synopsis
- Sun hemp fibers, sourced from plants in India, are natural lignocellulosic fibers composed of hemicelluloses, cellulose, and lignin, and undergo chemical treatment to improve their properties for use as reinforcement.
- The study assessed the thermal stability and kinetic parameters of alkaline-treated sun hemp fibers using thermo gravimetric data with heating rates of 10, 20, and 30 °C/min, applying multiple model-free methods (KAS, FWO, FM, STAR) alongside the Distributed Activation Energy Model (DAEM).
- The activation energy calculated from these methods ranged from 93.3 to 104.8 kJ/mol, with the pre-exponential factor being between 46.6 x
Article Abstract
Sun hemp fibers are natural fibers obtained from plants grown in India and nearby countries. It is lignocellulosic biomass having the complex structure of hemicelluloses, cellulose and lignin. Chemical treatment of natural fibers is in practice to enhance the properties being used as reinforcement. Alkaline-treated fiber was sampled and thermal stability along with kinetic parameters was assessed with thermo gravimetric data at heating rates 10, 20 and 30 °C/min using four model-free methods Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), Friedman (FM), Starink (STAR) along with Distributed activation energy model (DAEM) to calculate pre-exponential factor. The calculated activation energy E by these model-free methods were in the range of 93.3-104.8 kJ/mol and pre-exponential factor (A) was observed between the range 46.6 x10-90.5 x10/min by the DAEM method. The standard deviation (σ) calculated from average activation energy using all four methods was 4.5 kJ/mol, which showed the consistency in the methods employed to determine the activation energy of sun hemp.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2023.129065 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Universal receptive system as a novel regulator of transcriptomic activity of Staphylococcus aureus.
Microb Cell Fact
January 2025
Human Microbiology Institute, New York, NY, 10014, USA.
Our previous studies revealed the existence of a Universal Receptive System that regulates interactions between cells and their environment. This system is composed of DNA- and RNA-based Teazeled receptors (TezRs) found on the surface of prokaryotic and eukaryotic cells, as well as integrases and recombinases. In the current study, we aimed to provide further insight into the regulatory role of TezR and its loss in Staphylococcus aureus gene transcription.
View Article and Find Full Text PDFEvaluation of extra virgin olive oil compounds using computational methods: in vitro, ADMET, DFT, molecular docking and human gene network analysis study.
BMC Chem
January 2025
Department of Biochemistry, Faculty of Pharmacy, Adıyaman University, Adıyaman, 02000, Türkiye.
This study investigates the phenolic compounds (PC), volatile compounds (VC), and fatty acids (FA) of extra virgin olive oil (EVOO) derived from the Turkish olive variety "Sarı Ulak", along with ADMET, DFT, molecular docking, and gene network analyses of significant molecules identified within the EVOO. Chromatographic methods (GC-FID, HPLC) were employed to characterize FA, PC, and VC profiles, while quality parameters, antioxidant activities (TAC, ABTS, DPPH) were assessed via spectrophotometry. The analysis revealed a complex composition of 40 volatile compounds, with estragole, 7-hydroxyheptene-1, and 3-methoxycinnamaldehyde as the primary components.
View Article and Find Full Text PDFImmobilization of purified pectinase from Aspergillus nidulans on chitosan and alginate beads for biotechnological applications.
Microb Cell Fact
January 2025
Botany and Microbiology Department, Faculty of Science, Benha University, Benha, Egypt.
Background: Because the process is cost-effective, microbial pectinase is used in juice clearing. The isolation, immobilization, and characterization of pectinase from Aspergillus nidulans (Eidam) G. Winter (AUMC No.
View Article and Find Full Text PDFUnravelling the outcome of L-glutaminase produced by Streptomyces sp. strain 5 M as an anti-neoplasm activity.
Microb Cell Fact
January 2025
Molecular Biology Department, Biotechnology Research Institute, National Research Center, El-Buhouth St. 33, Dokki, P.O.12622, Giza, Egypt.
Background: Actinomycetes are a well-known example of a microbiological origin that may generate a wide variety of chemical structures. As excellent cell factories, these sources are able to manufacture medicines, agrochemicals, and enzymes that are crucial.
Results: In this study, about 34 randomly selected Streptomyces isolates were discovered in soil, sediment, sea water, and other environments.
MTCH2 controls energy demand and expenditure to fuel anabolism during adipogenesis.
EMBO J
January 2025
Department of Immunology and Regenerative Biology, Weizmann Institute of Science, 76100, Rehovot, Israel.
Mitochondrial carrier homolog 2 (MTCH2) is a regulator of apoptosis, mitochondrial dynamics, and metabolism. Loss of MTCH2 results in mitochondrial fragmentation, an increase in whole-body energy utilization, and protection against diet-induced obesity. In this study, we used temporal metabolomics on HeLa cells to show that MTCH2 deletion results in a high ATP demand, an oxidized cellular environment, and elevated utilization of lipids, amino acids, and carbohydrates, accompanied by a decrease in several metabolites.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!