scholarly journals Studies on Medicago lupulina saponins. 6. Some chemical characteristics and biological activity of root saponins

2014 ◽  
Vol 56 (1) ◽  
pp. 119-126 ◽  
Author(s):  
Wiesław Oleszek ◽  
Marian Jurzysta ◽  
Piotr Górecki ◽  
Stanisław Burda ◽  
Michał Płoszyński
Keyword(s):  
Biological Activity ◽  
Chemical Properties ◽  
Chemical Characteristics ◽  
Two Dimensional ◽  
Medicago Lupulina ◽  
Medicagenic Acid ◽  
Saponin Fraction ◽  
And Chemical Properties

The saponin fraction of black medic trefoil (<em>Medicago lupulina</em>) roots was isolated and purified. Its hydrolysis afforded several aglycones that have been identified by spectral and chemical properties as medicagenic acid, hederagenine and soyasapogenols: B, C, D, E and F. They made up, respectively. 46.9 and 45% of total sapogenins isolated. Two-dimensional TLC of <em>M. lupulina</em> root saponins revealed fourteen compounds, two of which were medicagenic acid glycosides. The haemolytic, antifungal and allelopathic activities of <em>M. lupulina</em> and <em>M. media</em> roots are compared and discussed.

scholarly journals Liquid phase exfoliation of antimonene: systematic optimization, characterization and electrocatalytic properties

2019 ◽  
Vol 7 (39) ◽  
pp. 22475-22486 ◽  
Author(s):  
Carlos Gibaja ◽  
Mhamed Assebban ◽  
Iñigo Torres ◽  
Michael Fickert ◽  
Roger Sanchis-Gual ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Electrocatalytic Properties ◽  
Systematic Optimization ◽  
Group 15 ◽  
Liquid Phase Exfoliation ◽  
Physical And Chemical ◽  
And Chemical Properties

Antimonene, a novel group 15 two-dimensional material, is attracting great attention due to its outstanding physical and chemical properties.

scholarly journals The Effect of Gelatin Addition from Various Fish Skin to the Physical and Chemical Properties of Chikuwa

2019 ◽  
Vol 3 (1) ◽  
pp. 78
Author(s):  
Muhammad Irvan
Keyword(s):  
Protein Content ◽  
Chemical Properties ◽  
Gel Strength ◽  
Chemical Characteristics ◽  
Fish Scale ◽  
Physical And Chemical Properties ◽  
Physical And Chemical Characteristics ◽  
Significant Difference ◽  
Physical And Chemical ◽  
And Chemical Properties

Chikuwa is one of Japanese traditional fishery food product that commonly made from potato starch, fish surimi, and some spices. To enhance Chikuwa physical and chemical properties especially in texture attribute and protein content, Gelatin can be added. Gelatin is a partial hydrolysis protein that usually added in food making process to improve the gumminess quality and the protein content. Gelatin can be derived from bone collagen, skin and fish scale. The purpose of this study is to analyze the effect of gelatin from various skin fish to the physical and chemical characteristics of Chikuwa. The research method used is experimental laboratories using a completely randomized design (CRD) with 3 replications. The data analysed with ANOVA and continued with BNJ analysis if there is a significant difference between the treatments. This research has divided into two stages. The first step aim is to make the gelatin from the skin of seabass, payus fish and tilapia with 3% concentrations. The second step is Chikuwa making added with gelatin. The parameters that observed are water content, protein content, white degree, gel strength, sensory attributes, folding, bite. The results showed that Chikuwa with the addition of gelatin from seabass, payus and tilapia skin are significantly different (p &lt;0.05) due to the physical and chemical characteristics of Chikuwa. The best Chikuwa quality is Chikuwa with the addition of seabass gelatin, where the gelatin yield is 18.03 ± 0.68; the gelatin gel strength is 251.11 ± 1.08 bloom; the viscosity is 5.80 ± 0.15 cP; the gel Chikuwa sample strength is 954.54 ± 0.56 gcm and protein content is 22.01 ± 0.98%

scholarly journals Two-Dimensional Semiconductor Heterojunctions for Optoelectronics and Electronics

2021 ◽  
Vol 9 ◽  
Author(s):  
Qian Wang ◽  
Lin Zhang ◽  
Xuejuan Liu ◽  
Sha Li
Keyword(s):  
Electric Fields ◽  
Chemical Properties ◽  
Band Alignment ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Layered Semiconductors ◽  
Future Developments ◽  
Device Applications ◽  
Physical And Chemical ◽  
And Chemical Properties

Two-dimensional (2D) layered semiconductors are current research hotspots on account of their wide variety of applications in electronics and optoelectronics due to their particular ultrathin nature. In this review, the band alignment engineering in heterojunctions composed of 2D van der Waals (vdW) layered semiconductors and their device applications in optoelectronics are provided. Various approaches that induced adjustability of vdW heterojunctions are summarized, mainly including composition and thickness modulations, strain, and electric fields. Furthermore, their perspectives on future developments in optoelectronics and electronics devices based on the newly unique physical and chemical properties are outlined.

2D Boron Nanosheets Architectonics: Opening New Territories by Smart Functionalization

2022 ◽  
Author(s):  
Chao Han ◽  
Rui Han ◽  
Xin Zhang ◽  
Zhi Xu ◽  
Weijie Li ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Atomic Weight ◽  
Dimensional Structure ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Physical And Chemical ◽  
And Chemical Properties

Due to its low atomic weight, two-dimensional structure, and unique physical and chemical properties, borophene has attracted strong interests from researchers across different fields. Currently, the experimentally realized polymorphs of...

COMPLEX BIOLOGICAL DRUG BASED ON BIOLOGICAL AUXINS

2020 ◽  
pp. 353-354
Author(s):  
M. Volkov ◽  
Y. Blokhin ◽  
T. Zabolockaya ◽  
A. Shtaufen
Keyword(s):  
Biological Activity ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Biological Drug ◽  
Biological Preparation ◽  
Physical And Chemical ◽  
And Chemical Properties

A new biological preparation based on bacterial autolisates with the addition of the mineral glauconite has been obtained and studied its physical and chemical properties and biological activity .

Progress of Graphene-Based Hydrogel

2016 ◽  
Vol 852 ◽  
pp. 714-719
Author(s):  
Yu Xiang ◽  
Li Bin Liu ◽  
Zhao Dang ◽  
Ting Li
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Reduced Graphene ◽  
Physical And Chemical ◽  
Significant Attention ◽  
And Chemical Properties

Graphene, a typical two-dimensional planar monolayer of sp2carbon atoms, has attracted significant attention due to its outstanding physical and chemical properties. Nowadays, many graphene-based composites have been synthesized. Among them, graphene hydrogels (including graphene oxide hydrogel and reduced graphene oxide hydrogel) as a kind of graphene-based composites have a wide application prospect. In this paper, the progresses of graphene-based hydrogels are reviewed, and the prospects for the development of graphene-based hydrogels are also discussed.

Design of 2D materials – MSi2CxN4-x (M = Cr, Mo, and W; x = 1 and 2) - with tunable electronic and magnetic properties

Nanoscale ◽  
2021 ◽  
Author(s):  
Bowen Li ◽  
Jiazhong Geng ◽  
Haoqiang Ai ◽  
youchao Kong ◽  
Haoyun Bai ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
2D Materials ◽  
Chemical Properties ◽  
First Principle ◽  
Physical And Chemical Properties ◽  
Two Dimensional ◽  
Electronic And Magnetic Properties ◽  
The Past ◽  
Physical And Chemical ◽  
And Chemical Properties

Two-dimensional (2D) materials have attracted increasing interest in the past decades due to their unique physical and chemical properties for diverse applications. In this work, we present a first-principle design...

scholarly journals Substratos no desenvolvimento de cultivares de gérbera envasada

2015 ◽  
Vol 21 (2) ◽  
pp. 177
Author(s):  
Fernanda Ludwig ◽  
Dirceu Maximino Fernandes ◽  
Amaralina Celoto Guerrero ◽  
Roberto Lyra Villas Bôas
Keyword(s):  
Dry Matter ◽  
Ornamental Plants ◽  
Chemical Properties ◽  
Dry Mass ◽  
Chemical Characteristics ◽  
Physical And Chemical Properties ◽  
Ph Values ◽  
Aerial Parts ◽  
Physical And Chemical ◽  
And Chemical Properties

The gerbera is a prominent culture that has gained in the Brazilian market of flowers and ornamental plants and there is a great demand for adequate substrates for its production. This study was conducted to evaluate the growth and distribution of dry mass and nitrogen in potted gerbera, depending on the substrates and cultivars. Experimental design was randomized blocks in a 5x2 factorial arrangement (5 substrates and 2 cultivars). Red and Cherry cultivars were evaluated at 1, 15, 29, 43 and 50 days of acclimation (DAA) to the leaves number, leaf area, dry mass of aerial parts (leaf and flower) and accumulation of nitrogen. From 29 DAA, the inflorescence has established as the drain and has contributed significantly to the total dry mass. The accumulation of nitrogen was similar in vegetative and reproductive periods. The traits evaluated varied depending on the substrate used, influenced by physical and chemical properties of the same. The growth, dry matter and nitrogen distribution potted gerbera cultivars Cherry and Red are influenced by physical and chemical characteristics of substrates, with better results in substrates with bulk density of less than 530 kg m-3 and pH values between 5.5 and 6.8

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