China 
Africa 
Explore chapters and articles related to this topic
Reaction Hydrosilylation of Allyl-2,3,5,6-Di-O-Isopropylidene-D-Mannofuranose with Methyl- and Phenylcyclodisilazanes
Published in Omari V. Mukbaniani, Tamara N. Tatrishvili, Marc J. M. Abadie, Science and Technology of Polymers and Advanced Materials, 2019
N. Sidamonidze, R. Vardiashvili, M. Nutsubidze
Synthesis of the low-toxicity compound has become important in biological and pharmacological studies, and so there is interest in using carbohydrates to modify linear and cyclolinear siloxanes, which may lead to a substantial change in the nature of the drug action. The effect of glyco-sides on the organism is mainly conditioned by aglycones (non-sugar part of glycosides). Presence of traces of sugar contributes to the improvement of solubility, a decrease of toxicity, conductivity in biological membranes, which contributes to the creation of favorable conditions for a decrease of active concentration of some hard pharmacologic preparations and increase of the range of therapeutic effect [2–5].
The Condensation Reactions Of 1-Chloro-2,3,4,6-Tetra-O-Acetyla-D-Gluco (Galacto) Pyranose With Heterocyclic Amines
Published in A. K. Haghi, Lionello Pogliani, Devrim Balköse, Omari V. Mukbaniani, Andrew G. Mercader, Applied Chemistry and Chemical Engineering, 2017
N. Sidamonidze, R. Gakhokidze, R. Vardiashvili
Therapeutic effect of glycosides on the organism is mainly conditioned by aglycones (nonsugar part of glycosides). The presence of traces of sugar contributes to the improvement of solubility. decrease of toxicity. conductivity in biological membranes. which contributes to the creation of favorable conditions for a decrease of active concentration of some hard pharmacologic preparations and increase of the range of therapeutic effect.1–3
Toxicological and chemoprevention studies of Brazilian brown propolis from Araucaria sp
Published in Journal of Toxicology and Environmental Health, Part A, 2023
Tábata Rodrigues Esperandim, Arthur Barcelos Ribeiro, Iara Silva Squarisi, Letícia Teixeira Marcos de Souza, Thiago Olimpio de Souza, Nathália Oliveira Acésio, Mário Ferreira Conceição Santos, Jairo Kenupp Bastos, Sérgio Ricardo Ambrósio, Denise Crispim Tavares
The biological properties of propolis derive from its chemical composition, which is highly variable. This fact may be due to different factors, especially the characteristics of the vegetation where the hive is located (Šturm and Ulrih 2020). Therefore, approximately 800 chemical substances were isolated from propolis, taking into account collection of propolis types from all geographic regions. Among these chemical substances, there are flavonoid aglycones, phenolic acids and their esters, phenolic aldehydes, alcohols, ketones, sesquiterpenes, coumarins, steroids, amino acids and inorganic compounds (Granados-Pineda et al. 2018; Kasote, Bankova, and Viljoen 2022).
Changes in bioactive components, biological activities and starch digestibility of soymilk residues as affected by far-infrared radiation combined with hot-air and hot-air drying
Published in Drying Technology, 2022
Ekkarat Tangkhawanit, Naret Meeso, Sirithon Siriamornpun
The sum of free and bound flavonoid contents of WSB and SI were 3.75 and 6.84 mg RE/g DW, respectively (Table 4). Additionally, after HA and FIR-HA drying, the total flavonoid contents of dried SI ranged from 1.17 to 9.36 mg RE/g DW. The results found that dried SI-HA 60 had the highest TFC value, while TFC content in dried SI-FIR 70 was significantly higher than those dried SI-FIR samples. Generally, flavonoid compounds in soybean and soy residues are associated with protein in soy, with very little combined with the lipid fraction.[18] The flavonoids mostly found in soy residues are rutin (Table 2) and isoflavones (daidzein and genistein) (Table 3), which are inactive glycoside forms, especially the isoflavone groups. Although, the production process results in decreases of some phenolics, there were also increases for some flavonoids, as shown in Table 4. After soaking, blending and drying; these processing steps and drying treatments could contribute to the degradation of flavonoid glycosides to aglycones. Moreover, FIR-HA treatment may strongly vibrate the flavonoid structure and thus break their attachment to phenolic derivative compounds, and do so better than HA drying. This explains why the TFCs of SI and dried SI were higher than WSB samples, while TFCs of SI (dried by FIR-HA) were lower than the WSB samples. Additionally, the TPCs in dried SI of our findings were higher than soy meal from oil extraction (20–25 mg GAE/g soy extract),[6] soymilk residues (96–103 mg GAE/100 g wet weight),[1] and dried soymilk residues (63- 83 mg GAE/g).[23] On the other hand, TFCs were lower than soy meal (15–20 mg QE/g soy extract),[6] and soymilk residue extracted (15–66 mg RE/g) as reported by Sun et al.[24] Our present study has shown that the heat processing from HA and FIR-HA drying alters the phenolic structures of the free and bound forms of legumes, as grains and as residue from beans, thus increasing the content of phenolic compounds, which will probably influence their bioactive properties.[22,24]