Information entropy-based classification of triterpenoids and steroids from Ganoderma

Castellano, Gloria; Torrens, Francisco

doi:10.1016/j.phytochem.2015.05.008

Cited by 25 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The antioxidant activity of synthesized capsiates was determined and confirmed using in vitro assays 45 , and these capsiates show a concentration-dependent ROS scavenging capacity that neutralizes superoxide radicals 46 . Licoagroside A has antioxidative ability against ROS generation in the skin 47 , and tsugaric acid B presents antioxidant activity in Ganoderma 48 . However, in the Ne treatment, these compounds all decreased.…”

Section: Discussionmentioning

confidence: 99%

Excessive nitrogen application dampens antioxidant capacity and grain filling in wheat as revealed by metabolic and physiological analyses

Kong

Xie

et al. 2017

Sci Rep

110

View full text Add to dashboard Cite

In this study, field-grown wheat (Triticum aestivum L.) was treated with normal (Nn) and excessive (Ne) levels of fertilizer N. Results showed that Ne depressed the activity of superoxide dismutase and peroxidase and increased the accumulation of reactive oxygen species (ROS) and malondialdehyde. The normalized difference vegetation index (NDVI) was higher under Ne at anthesis and medium milk but similar at the early dough stage and significantly lower at the hard dough stage than that under Nn. The metabolomics analysis of the leaf responses to Ne during grain filling showed 99 metabolites that were different between Ne and Nn treatments, including phenolic and flavonoid compounds, amino acids, organic acids and lipids, which are primarily involved in ROS scavenging, N metabolism, heat stress adaptation and disease resistance. Organic carbon (C) and total N contents were affected by the Ne treatment, with lower C/N ratios developing after medium milk. Ultimately, grain yields decreased with Ne. Based on these data, compared with the normal N fertilizer treatment, we concluded that excessive N application decreased the ability to scavenge ROS, increased lipid peroxidation and caused significant metabolic changes disturbing N metabolism, secondary metabolism and lipid metabolism, which led to reduced grain filling in wheat.

show abstract

Section: Discussionmentioning

confidence: 99%

Excessive nitrogen application dampens antioxidant capacity and grain filling in wheat as revealed by metabolic and physiological analyses

Kong

Xie

et al. 2017

Sci Rep

110

View full text Add to dashboard Cite

show abstract

“…The approach provides additional opportunities for classifying chemical structures. It could be done with the use of h-based estimates in combination with other parameters relevant to chemical properties of the substances [54][55][56][57]. For example, Zhdanov proposed the classification of natural compounds in the space of two coordinates: h/N and the mean oxidation state of the carbon atoms in the molecule (Figure 5) [57].…”

Section: Figurementioning

confidence: 99%

Information Entropy in Chemistry: An Overview

Sabirov

Shepelevich

2021

Entropy

View full text Add to dashboard Cite

Basic applications of the information entropy concept to chemical objects are reviewed. These applications deal with quantifying chemical and electronic structures of molecules, signal processing, structural studies on crystals, and molecular ensembles. Recent advances in the mentioned areas make information entropy a central concept in interdisciplinary studies on digitalizing chemical reactions, chemico-information synthesis, crystal engineering, as well as digitally rethinking basic notions of structural chemistry in terms of informatics.

show abstract

“…First, it is a structural descriptor for assessing the complexity of chemical structures [26]. Information entropy is useful in this regard for connecting structural and physicochemical features [27], numerically distinguishing isomers of organic molecules [28], and classifying natural products and synthetic chemicals [29,30].…”

Section: Introductionmentioning

confidence: 99%

On Computation of Entropy Measures and Molecular Descriptors for Isomeric Natural Polymers

Mansoor

Siddiqui

Ahmad

et al. 2022

Journal of Mathematics

View full text Add to dashboard Cite

Glycogen is a polysaccharide that has a large number of highly branched polymers. It has a structure that is nearly identical to that of amylopectin. It can be found in practically all animal cells and some plant cells. Glycogen is a natural polysaccharide polymer with features that make it a good antiparticle carrier for cancer therapeutics. It is not only biocompatible by nature but also be chemically modified to accommodate additional molecular components. Topological indices are used to create quantitative structure-activity relationships (QSARs), in which the biological activity or other properties of molecules are linked to their chemical structure. We estimated certain K ^ Banhatti and Gourava indices of natural polymers of polysaccharides, namely, glycogen and amylopectin, which have therapeutic applications, extraordinary features, and fascinating molecular framework, in this study. We also discovered some relationships between K ^ Banhatti indices and information entropies, as well as a relationship between Gourava indices and their respective information entropies. In addition, we give a comparative analysis of these macromolecule families using graphs to highlight their nature.

show abstract

Information entropy-based classification of triterpenoids and steroids from Ganoderma

Cited by 25 publications

References 14 publications

Excessive nitrogen application dampens antioxidant capacity and grain filling in wheat as revealed by metabolic and physiological analyses

Excessive nitrogen application dampens antioxidant capacity and grain filling in wheat as revealed by metabolic and physiological analyses

Information Entropy in Chemistry: An Overview

On Computation of Entropy Measures and Molecular Descriptors for Isomeric Natural Polymers

Contact Info

Product

Resources

About