Preparation, physicochemical and pharmaceutical characterization of chitosan from Catharsius molossus residue

Physicochemical characterization of chitosan and its effects on early growth, cell cycle and root anatomy of transgenic and non-transgenic maize hybrids

“…The Differential thermal analysis (DTA) results and the curve of Thermogravimetric Analysis (TGA) showed data coincident with those previously described (Paulino et al, 2006;Abdel-Rahman et al, 2015;Ma et al, 2015). In order to observe the real chemical characteristics of chitosan, no pre-drying of the sample was done.…”

“…The curve of thermogravimetric analysis (TGA) in Supplementary Fig.5 shows two typical thermal events: the first with a peak at 70-95°C with a weight loss of 9% correspondent to the evaporation of the water present in the hydrophilic groups of the polymer chains (Paulino et al, 2006;Abdel-Rahman et al, 2015). The second event with a peak at 300-380°C with weight loss of 65% is related to the decomposition of glucosamine and residues of N-acetyl glucosamine of the chitosan chains (Paulino et al, 2006;Abdel-Rahman et al, 2015;Ma et al, 2015).…”

Three-dimensional chitin rings from body segments of a pet diplopod species: Characterization and protein interaction studies

“…So far, crustacean exoskeletons from waste of food processing industry have been exploited as a main source for commercial chitin production [9][10][11]. Some recent studies have demonstrated that chitin isolates from other sources such as fungi [5] and insect cuticles [12][13][14] exhibit different characteristics that deserve a special attention. Especially, some recent studies reported by Ehrlich et al have provided new insights into the nature and function of chitin found in the organisms of phylum Porifera [15][16][17][18].…”

Anti-aging effect and gene expression profiling of dung beetle glycosaminoglycan in aged rats

“…Such crude drugs from dung beetles and B. ignitus queens have been studied in an effort to identify their active components or to make the extracts safer for human use. The dung beetle C. molossus was purified to yield N-acetyldopamine dimers, molossusamide A-C (1–3), showing COX-1 and COX-2 inhibitory activity [25]; chitosan [26]; melanin [27]; and serine proteases [9, 28]. A bumblebee ( Bombus ignitus ) extract was shown to contain bee venom serine protease [29], peroxiredoxins [30], and peptidoglycan recognition protein (PGRP-S) [31].…”