U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject "chemical composition" Remove constraint Subject: "chemical composition"
Start Over

Search

30,928  Search Results

« Previous | 1 - 20 of 30,928 |
Number of results to display per page

Search Results

1. Powder properties, rheology and 3D printing quality of gluten-free blends

Author:
Kristina Radoš; Maja Benković; Nikolina Čukelj Mustač; Matea Habuš; Bojana Voučko; Tomislava Vukušić Pavičić; Duška Ćurić; Damir Ježek; Dubravka Novotni
Source:
Journal of food engineering 2023 v.338 pp. 111251
ISSN:
0260-8774
Subject:
chemical composition,   etc   ; particle size; rheology; viscosity;     Show all 4 Subjects
Abstract:
... Food personalization and customization is now easier due to 3D printing, but the printing performance of gluten-free cereal material has hardly been explored. This research investigated the suitability of four gluten-free powder blends for snack 3D printing. The blends were analyzed for their powder properties, and a selected blend served as a model to optimize median particle size (20.9; 155.4; 2 ...
DOI:
10.1016/j.jfoodeng.2022.111251

2. A mini-review on the plant sources and methods for extraction of rhamnogalacturonan I

Author:
Adrianna Kaczmarska; Piotr M. Pieczywek; Justyna Cybulska; Artur Zdunek
Source:
Food chemistry 2023 v.403 pp. 134378
ISSN:
0308-8146
Subject:
chemical composition,   etc   ; food chemistry; pH; pectins; solvents; temperature;     Show all 6 Subjects
Abstract:
... Rhamnogalacturonan type I (RG-I) is one of the pectin family member abundant in plant cell walls. Process of RG-I extraction from cell walls, either as a one-step or several-stage process, conditions the structure and properties of obtained polysaccharides. In this paper, we provide comprehensive overview of the factors related to the source and extraction techniques that determine the yield and c ...
DOI:
10.1016/j.foodchem.2022.134378

3. Potential of air-currents assisted particle separation (ACAPS) technology for hybrid fractionation of clean-label faba bean (Vicia faba L.) protein

Author:
Brasathe Jeganathan; Jun Gao; Feral Temelli; Thava Vasanthan
Source:
Journal of food engineering 2023 v.339 pp. 111265
ISSN:
0260-8774
Subject:
chemical composition,   etc   ; coproducts; cultivars; dietary fiber; faba beans; fractionation; hulling; hybrids; particle size; starch;     Show all 10 Subjects
Abstract:
... Air-currents assisted particle separation (ACAPS) of faba beans prior to wet separation was evaluated for its impact on chemical composition, yield and recovery of protein, starch and dietary fibre, and protein secondary structural changes. The protein and dietary fibre contents of faba bean cultivars Snowbird and Athena were positively correlated (r = 0.9, P < 0.0001) with the increasing particle ...
DOI:
10.1016/j.jfoodeng.2022.111265

4. Metabolomics driven analysis of Nigella sativa seeds identifies the impact of roasting on the chemical composition and immunomodulatory activity

Author:
Mohamed A. Salem; Riham A. El-Shiekh; Nora M. Aborehab; Ahmed A. Al‐Karmalawy; Shahira M. Ezzat; Saleh Alseekh; Alisdair R. Fernie
Source:
Food chemistry 2023 v.398 pp. 133906
ISSN:
0308-8146
Subject:
chemical composition,   etc   ; Nigella sativa; cell lines; flavonoids; flavor; food chemistry; immunomodulators; metabolites; metabolomics; monocytes; saponins;     Show all 11 Subjects
Abstract:
... Nigella sativa L. seeds (NS) are known as one of the most traditional immunomodulatory and nutritive food additives. NS can, furthermore, be roasted to give curries, breads, and other dishes a smoky, nutty flavor. This study evaluated the effect of roasting NS on the metabolic profile and immunomodulatory activity. Non-targeted metabolomics analysis was conducted using several analytical platforms ...
DOI:
10.1016/j.foodchem.2022.133906

5. Characteristics and source apportionment of PM2.5 under the dual influence of the Spring Festival and the COVID-19 pandemic in Yuncheng city

Author:
Chen Zhang; Yingying Zhang; Xingang Liu; Yafei Liu; Chenlu Li
Source:
Journal of environmental sciences (China) 2023 v.125 pp. 553-567
ISSN:
1001-0742
Subject:
chemical composition,   etc   ; COVID-19 infection; air; business enterprises; coal; combustion; humidity; nitrogen; sulfur; vehicles (equipment); wind speed; China;     Show all 12 Subjects
Abstract:
... Based on the online and membrane sampling data of Yuncheng from January 1st to February 12th, 2020, the formation mechanism of haze under the dual influence of Spring Festival and COVID-19 (Corona Virus Disease) was analyzed. Atmospheric capacity, chemical composition, secondary transformation, source apportionment, backward trajectory, pollution space and enterprise distribution were studied. Low ...
DOI:
10.1016/j.jes.2022.02.020

6. Potential anti-diabetic components of Apocynum venetum L. flowers: Optimization, chemical characterization and quality evaluation

Author:
Jun Peng; Rahima Abdulla; Yi Li; Xiao-yan Liu; Fei He; Xue-lei Xin; Haji Akber Aisa
Source:
Journal of food composition and analysis 2023 v.115 pp. 104930
ISSN:
0889-1575
Subject:
chemical composition,   etc   ; Apocynum venetum; beverages; enzymes; ethanol; food composition; glycemic effect; heat; humans; hydrogen; hydrophobicity; nectar; porous media; response surface methodology; ultrasonic treatment;     Show all 15 Subjects
Abstract:
... Apocynum venetum L. flowers are the source of beverage and primary nectar with potential industrial value but have received less attention. This study aimed to investigate its processing, chemical characterization and quality evaluation of the potential antidiabetic activity. Compared with heat reflux extraction, the ultrasound-assisted extraction (UAE) method had the advantages of low cost and hi ...
DOI:
10.1016/j.jfca.2022.104930

7. Amino-functionalized multilayer Ti3C2Tx enabled electrochemical sensor for simultaneous determination of Cd2+ and Pb2+ in food samples

Author:
Yuanyuan Chen; Peng Zhao; Zhikun Hu; Yi Liang; Haiyan Han; Mei Yang; Xiaogang Luo; Changjun Hou; Danqun Huo
Source:
Food chemistry 2023 v.402 pp. 134269
ISSN:
0308-8146
Subject:
chemical composition,   etc   ; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; corn; crystal structure; electrical conductivity; electrochemistry; food chemistry; rice; sensors (equipment); surface area; titanium; wheat;     Show all 14 Subjects
Abstract:
... Herein, amino-functionalized multilayer titanium carbide (NH₂-Ti₃C₂Tₓ) was developed and applied to electrochemical sensor for simultaneous determination of Cd²⁺ and Pb²⁺. The NH₂-Ti₃C₂Tₓ was prepared by grafting (3-amino-propyl) triethylsilane (APTES) onto the surface of Ti₃C₂Tₓ. Its morphology, crystal structure and chemical composition were characterized by field emission scanning electron micr ...
DOI:
10.1016/j.foodchem.2022.134269

8. Antithrombotic potential of Lippia alba: A mechanistic approach

Author:
Paula M. Leite; Ana P.N. Miranda; Izabella Gomes; Maria L. Rodrigues; Layla M. Camargos; Juliana M. Amorim; Rita C.F. Duarte; André A.G. Faraco; Maria G. Carvalho; Rachel O. Castilho
Source:
Journal of ethnopharmacology 2023 v.301 pp. 115744
ISSN:
0378-8741
Subject:
chemical composition,   etc   ; Lippia alba; anticoagulant activity; anxiety; automation; coagulation; electrospray ionization mass spectrometry; fibrinogen; flavonoids; medicinal plants; parasympatholytics; phenylpropanoids; phytotherapy; prothrombin; thin layer chromatography; thrombin; thromboplastin; traditional medicine; triterpenoids; ultra-performance liquid chromatography; warfarin; Brazil;     Show all 22 Subjects
Abstract:
... Lippia alba (Mill.) N.E.Br. ex Britton & P. Wilson is traditionally used in Brazil as an adjunct in the relief of mild anxiety, as an antispasmodic, and as an antidyspeptic. This medicinal species was included in the Phytotherapeutic Form of the Brazilian Pharmacopeia 2nd edition (2021) and has already been described as the most used medicinal plant in a study with patients from an Anticoagulation ...
DOI:
10.1016/j.jep.2022.115744

9. Bioactive compounds of purslane (Portulaca oleracea L.) according to the production system: A review

Author:
César Omar Montoya-García; Rosario García-Mateos; Elvia Becerra-Martínez; Rocío Toledo-Aguilar; Víctor Hugo Volke-Haller; J. Jesús Magdaleno-Villar
Source:
Scientia horticulturae 2023 v.308 pp. 111584
ISSN:
0304-4238
Subject:
chemical composition,   etc   ; Philippines; Portulaca oleracea; abiotic stress; antioxidants; crop management; dietary supplements; flavonoids; glycosides; herbaceous plants; human health; hydroponics; lignans; metabolome; metabolomics; polysaccharides; sterols; terpenoids; Australia; Brazil; China; Greece; Iran; Italy; Malaysia; Mexico; Northern Africa; Spain; United Kingdom;     Show all 29 Subjects
Abstract:
... Purslane (Portulaca oleracea L.) is an herbaceous plant consumed in Italy, the United Kingdom, Spain, Greece, Turkey, Iran, Malaysia, the Philippines, China, North Africa, Australia, the United States, Brazil, and Mexico. Purslane contains nutraceutical compounds that can be potentiated based on biotic and abiotic stress practices. It provides substantial contributions of minerals, polysaccharides ...
DOI:
10.1016/j.scienta.2022.111584

10. Analgesic, anti-inflammatory activity and metabolite profiling of the methanolic extract of Callicarpa arborea Roxb. leaves

Author:
Rubaet Sharmin Ema; S.M. Neamul Kabir Zihad; Md Naharul Islam; Nazifa Sifat; Razina Rouf; Jamil A. Shilpi; Shaikh Jamal Uddin
Source:
Journal of ethnopharmacology 2023 v.300 pp. 115757
ISSN:
0378-8741
Subject:
chemical composition,   etc   ; Callicarpa; acetic acid; acute toxicity; albino; analgesic effect; analgesics; anti-inflammatory activity; dose response; edema; egg albumen; formalin test; gas chromatography-mass spectrometry; hot plate test; metabolites; mortality; pain; phytochemicals; rheumatoid arthritis; toxicity testing; traditional medicine; tribal peoples; Bangladesh; India;     Show all 24 Subjects
Abstract:
... Callicarpa arborea Roxb. is widely used as traditional medicine especially by the tribal people of Bangladesh in the management of wide range of ailments. In addition to Bangladesh, the leaves of this plant is utilized as a remedy to various painful and inflammatory conditions including rheumatism, toothache and stomachache in other countries of Indian subcontinent. Depending on the ethnomedicinal ...
DOI:
10.1016/j.jep.2022.115757

11. Colonial chemical signature of social wasps and their nesting substrates

Author:
Denise Sguarizi-Antonio; Kamylla Balbuena Michelutti; Eva Ramona Pereira Soares; Nathan Rodrigues Batista; Sidnei Eduardo Lima-Junior; Claudia Andrea Lima Cardoso; Viviana de Oliveira Torres; William Fernando Antonialli-Junior
Source:
Chemoecology 2022 v.32 no.1 pp. 41-47
ISSN:
0937-7409
Subject:
chemical composition,   etc   ; nests;     Show all 2 Subject
Abstract:
... Social wasps build their nests using plant material and can thereby occupy different types of habitats. The organization of their colonies is generally based on complex communication systems that include chemical compounds of the cuticle that are shared with the material of their nests thus contributing to the specific chemical signature of their colony. These compounds can vary by environmental f ...
DOI:
10.1007/s00049-021-00361-5

12. Polycatenanes: synthesis, characterization, and physical understanding [Erratum: June 2022, v.51(12); p.5237]

Author:
Guancen Liu; Phillip M. Rauscher; Benjamin W. Rawe; Marissa M. Tranquilli; Stuart J. Rowan
Source:
Chemical Society reviews 2022 v.51 no.12 pp. 4928-4948
ISSN:
1460-4744
Subject:
chemical composition,   etc   ; catenanes; polymers;     Show all 3 Subjects
Abstract:
... Chemical composition and architecture are two key factors that control the physical and material properties of polymers. Some of the more unusual and intriguing polymer architectures are the polycatenanes, which are a class of polymers that contain mechanically interlocked rings. Since the development of high yielding synthetic routes to catenanes, there has been an interest in accessing their pol ...
DOI:
10.1039/d2cs00256f

13. Fe, Mn, Al, Cu, Zn, and Cr in the sedimentary matter of Lake Onego

Author:
Natalia Kulik; Natalia Efremenko; Natalia Belkina; Vera Strakhovenko; Ekaterina Gatalskaya; Alexander Orlov
Source:
Quaternary international 2022 pp. -
ISSN:
1040-6182
Subject:
chemical composition,   etc   ; lakes; sediments;     Show all 3 Subjects
Abstract:
... The article presents the results of geochemical studies of Lake Onego. The chemical composition of the water was investigated, the uneven distribution of elements (Fe, Mn, Al, Cu, Zn, and Cr) and the forms of their migration along the lake water area were revealed. It is shown that the suspended form of metals prevails in bays exposed to an anthropogenic load. The study of the chemical composition ...
DOI:
10.1016/j.quaint.2022.04.005

14. Superior energy storage properties in NaNbO₃-based ceramics via synergistically optimizing domain and band structures

Author:
Weiwei Yang; Huarong Zeng; Fei Yan; Jinfeng Lin; Guanglong Ge; Yingbo Cao; Wentong Du; Kunyu Zhao; Guorong Li; Haijiao Xie; Jiwei Zhai
Source:
Journal of materials chemistry A 2022 v.10 no.21 pp. 11613-11624
ISSN:
2050-7496
Subject:
chemical composition,   etc   ; ceramics; energy;     Show all 3 Subjects
Abstract:
... Environment-friendly ceramic capacitors with outstanding energy storage properties (ESPs) are greatly desired for advanced pulsed power systems. However, it is still a great challenge to develop lead-free dielectric materials with simultaneous excellent recoverable energy storage density (Wᵣₑc) and energy storage efficiency (η). In the present work, a synergistic optimization strategy with regard ...
DOI:
10.1039/d2ta02534e

15. Review of current literature for vascularized biomaterials in dental repair

Author:
Amirhossein Moghanian; Berivan Cecen; Nazanin Nafisi; Zahra Miri; Derek H. Rosenzweig; Amir K. Miri
Source:
Biochemical engineering journal 2022 pp. 108545
ISSN:
1369-703X
Subject:
chemical composition,   etc   ; biocompatible materials; peptides;     Show all 3 Subjects
Abstract:
... Recent dental repair strategies involve various bioactive materials, from synthetic polymeric implants and natural polymers to bioceramics and engineered self-assembling peptides. Chemosynthetic and tissue-mimetic scaffolds offer good biophysical tunability, such as flexible strength, and biological triggering molecules, such as angiogenic factors. They induce tissue growth and vascularization in ...
DOI:
10.1016/j.bej.2022.108545

16. Isotope–Geochemical Characteristics of Natural Waters in the Southwestern Part of the Crimean Peninsula

Author:
N. A. Kharitonova; E. A. Filimonova; E. A. Kortunov; V. N. Samartsev; E. V. Drobyazko; Ya. V. Sorokoumova; M. G. Grechushnikova; A. L. Proshkina; S. P. Pozdnyakov
Source:
Water resources 2022 v.49 no.4 pp. 630-646
ISSN:
0097-8078
Subject:
chemical composition,   etc   ; tectonics; winter; yttrium;     Show all 4 Subjects
Abstract:
... The results of our study show that the natural waters in the southwestern part of the Crimean Peninsula are characterized by a wide range of chemical and isotopic composition. The chemical composition of the waters, as well as the level of concentration of the salt component, are determined and controlled by a number of factors: the tectonic structure of the area and lithological composition of th ...
DOI:
10.1134/S0097807822040091

17. Elemental sulfur generated in situ from Fe(III) and sulfide promotes sulfidation of microscale zero-valent iron for superior Cr(VI) removal

Author:
Yinshun Dai; Liangfeng Duan; Yamin Dong; Wenjie Zhao; Shan Zhao
Source:
Journal of hazardous materials 2022 v.436 pp. 129256
ISSN:
0304-3894
Subject:
chemical composition,   etc   ; acetates; iron; sulfur;     Show all 4 Subjects
Abstract:
... Herein, we compared the effect of different extra iron and sulfur precursors on the sulfidation efficiency, physicochemical properties, and reactivity of post-sulfidated microscale zero-valent iron (S-ZVI). S⁰@ZVI was synthesized from in situ S⁰ generated via reaction of Fe(III) with S²⁻, which resulted in 23-fold higher Cr(VI) removal compared with S⁰cₒₘ/ZVI synthesized using commercial S⁰. The d ...
DOI:
10.1016/j.jhazmat.2022.129256

18. Formation of acrylamide in coffee

Author:
Tolgahan Kocadağlı; Vural Gökmen
Source:
Current opinion in food science 2022 v.45 pp. 100842
ISSN:
2214-7993
Subject:
chemical composition,   etc   ; acrylamides; digestion; potatoes; toxicity;     Show all 5 Subjects
Abstract:
... Presence of thermal processing contaminant in foods has long been taking attention due to their probable toxic effects. Roasting coffee beans at very high temperatures creates major changes in the chemical composition and in the physical properties. Coffee beverages are important contributor to the exposure to acrylamide following potato and cereal products. This review describes the changes durin ...
DOI:
10.1016/j.cofs.2022.100842

19. Geochemical fingerprinting of continental and oceanic basalts: A machine learning approach

Author:
Luc S. Doucet; Michael G. Tetley; Zheng-Xiang Li; Yebo Liu; Hamed Gamaleldien
Source:
Earth-science reviews 2022 v.233 pp. 104192
ISSN:
0012-8252
Subject:
chemical composition,   etc   ; basalt; geochemistry; prediction; tectonics;     Show all 5 Subjects
Abstract:
... Basalts are ubiquitous, mantle-derived mafic rocks found within all tectonic settings. Studying the chemical composition of basalts has proven to be an effective way to understand tectonics-related mantle processes for more recent periods of Earth history when other geological and tectonic records are still well preserved. However, using basalt geochemistry to decipher ancient tectonic environment ...
DOI:
10.1016/j.earscirev.2022.104192

20. Interfacial Charge Transfer Influences Thin-Film Polymorphism

Author:
Fabio Calcinelli; Andreas Jeindl; Lukas Hörmann; Simiam Ghan; Harald Oberhofer; Oliver T. Hofmann
Source:
Journal of physical chemistry 2022 v.126 no.5 pp. 2868-2876
ISSN:
1932-7455
Subject:
chemical composition,   etc   ; benzoquinones; graphene; physical chemistry;     Show all 4 Subjects
Abstract:
... The structure and chemical composition are the key parameters influencing the properties of organic thin films deposited on inorganic substrates. Such films often display structures that substantially differ from the bulk, and the substrate has a relevant influence on their polymorphism. In this work, we illuminate the role of the substrate by studying its influence on para-benzoquinone on two dif ...
DOI:
10.1021/acs.jpcc.1c09986