U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Subject "ethanol" Remove constraint Subject: "ethanol"
Start Over

Search

36,657  Search Results

« Previous | 1 - 20 of 36,657 |
Number of results to display per page

Search Results

1. Efficacy of 75% alcohol in pretreatment of the Andersen sampler in trapping maximum airborne microbes

Author:
Zhao, Yan; Zhang, Jingwei; Wang, Shumei; Yu, Lingqi; Yu, Hao; Wang, Yuwen; Feng, Lihong
Source:
Aerobiologia 2021 v.37 no.1 pp. 171-178
ISSN:
0393-5965
Subject:
ethanol,   etc   ; autoclaving; statistical analysis;     Show all 3 Subjects
Abstract:
... The present study was conducted to evaluate the effects of the pretreatment methods and sampling time on the sampling of airborne bacteria in hospitals. Methods for the pretreatment of Andersen samplers, namely, non-sterilized, 75% ethanol and autoclaving sampled for 5 min, 10 min and 15 min in the general ward and class 1000 clean operating department, respectively, were studied. Statistical anal ...
DOI:
10.1007/s10453-020-09668-2

2. 3,4-Secocycloartane Triterpenoids from the Cones of Pseudolarix amabilis

Author:
Xiao, Si-Jia; Li, Bo; Huang, Zheng-Rui; Yuan, Wen-Lin; Ye, Ji; Li, Hui-Liang; Xu, Xi-Ke; Shen, Yun-Heng; Zhang, Wei-Dong
Source:
Natural products and bioprospecting 2021 v.11 no.1 pp. 119-126
ISSN:
2192-2195
Subject:
ethanol,   etc   ; Pseudolarix amabilis; triterpenoids;     Show all 3 Subjects
Abstract:
... Four new 3,4-secocycloartane triterpenoids, pseudolactones A–D (1–4), were isolated from the ethanol extract of the cones of Pseudol arixamabilis. Their structures were established by extensive 1D- and 2D-NMR experiments. The cones of P. arixamabilis are enriched in the ring-expanded or cleaved cycloartane triterpenoids. This work provides new insight into cycloartane triterpenoids from the cones ...
DOI:
10.1007/s13659-020-00285-7

3. Advanced nonlinear control strategies for a fermentation bioreactor used for ethanol production

Author:
Petre, Emil; Selişteanu, Dan; Roman, Monica
Source:
Bioresource technology 2021 v.328 pp. 124836
ISSN:
0960-8524
Subject:
ethanol; ethanol production,   etc   ; algorithms; bioreactors; continuous fermentation; environmental impact; temperature;     Show all 7 Subjects
Abstract:
... This study addresses the design of advanced control schemes implemented for a continuous fermentation process used to produce ethanol. Due to the inaccuracy of the models that express this complex process, a feasible controller is required to maximize the production of ethanol and to minimize its environmental impact, despite the existence of some significant uncertainties. Therefore, novel estima ...
DOI:
10.1016/j.biortech.2021.124836

4. Tension gradient-driven oil/water interface rapid particle self-assembly and its application in microdroplet motion control

Author:
Li, Xuan; Feng, Dong; Chen, Lei; Weng, Ding; Chen, Chaolang; Wang, Jiadao
Source:
Journal of colloid and interface science 2021 v.589 pp. 187-197
ISSN:
0021-9797
Subject:
ethanol,   etc   ; droplets; liquids; magnetism; oils;     Show all 5 Subjects
Abstract:
... A binary mixture was used during injection with one water-miscible component and the other water-immiscible, which can help particles to migrate toward and then self-assemble at the interface.The ethanol-tetrachloromethane binary mixture was used to verify the self-assembly method, with the diameter of droplets being about 1 mm. As the ethanol diffused into the colloidal solution, the colloidal pa ...
DOI:
10.1016/j.jcis.2020.12.079

5. Understanding the photophysics of stercobilin-Zn(II) and urobilin-Zn(II) complexes towards faecal pigment analysis

Author:
Prakash, Swayam; Panigrahi, Suraj Kumar; Dorner, Rebecca Paulina; Wagner, Martin; Schmidt, Wido; Mishra, Ashok Kumar
Source:
Chemosphere 2021 v.265 pp. 129189
ISSN:
0045-6535
Subject:
ethanol,   etc   ; fluorescence; geometry; solubility; zinc;     Show all 5 Subjects
Abstract:
... A detailed photophysical study of two faecal pigments (FPs), Urobilin (UB) and Stercobilin (SB), and their zinc complexes [FP-Zn(II)] was carried out. The enhancement of UB and SB fluorescence resulting from the formation of their Zn(II) complexes was attributed to the complexation-induced rigidity of the chromophoric units, and the corresponding decrease of nonradiative decay rate constants of th ...
DOI:
10.1016/j.chemosphere.2020.129189

6. Very high gravity ethanol fermentation from sweet sorghum stem juice using a stirred tank bioreactor coupled with a column bioreactor

Author:
Sriputorn, Benjaporn; Laopaiboon, Pattana; Phukoetphim, Niphaphat; Uppatcha, Nawapol; Phuphalai, Witchuta; Laopaiboon, Lakkana
Source:
Journal of biotechnology 2021 v.332 pp. 1-10
ISSN:
0168-1656
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; Saccharomyces cerevisiae; bioreactors; juices; specific growth rate; sweet sorghum;     Show all 8 Subjects
Abstract:
... A stirred tank bioreactor (STR) coupled with two column bioreactors (CRs) was used for ethanol production from sweet sorghum stem juice by Saccharomyces cerevisiae SSJ01KKU in a very high gravity fermentation. The effects of the medium circulation rate between the STR and CRs (2.6 and 5.2 mL/min, corresponding to 25 and 50 % of the S. cerevisiae specific growth rate), the starting time of medium c ...
DOI:
10.1016/j.jbiotec.2021.03.012

7. Co-production of ethanol and cellulose nanocrystals through self-cycling fermentation of wood pulp hydrolysate

Author:
Wang, Jie; Chae, Michael; Beyene, Dawit; Sauvageau, Dominic; Bressler, David C.
Source:
Bioresource technology 2021 v.330 pp. 124969
ISSN:
0960-8524
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; acid hydrolysis; bioenergy industry; bioethanol; cellulose; enzymatic hydrolysis; feedstocks; hydrolysates; nanocrystals; value added; wood pulp;     Show all 13 Subjects
Abstract:
... A promising approach to help offset production costs for the cellulosic ethanol industry is to improve ethanol productivity while simultaneously generating value-added by-products. This study reports integration of an advanced fermentation approach (self-cycling fermentation) with the production of cellulose nanocrystals. Specifically, wood pulp was enzymatically hydrolyzed to yield dissolved suga ...
DOI:
10.1016/j.biortech.2021.124969

8. Characteristics of SSSF of rice straw and mass transfer of ethanol in a granular packed bed with N2 sparging

Author:
Quan, Lin; Liu, Yi; Yang, Yingwu; Wang, Yanmei; Ding, Ke; Wang, Yong-Zhong; Wang, Dan
Source:
Biochemical engineering journal 2021 v.167 pp. 107921
ISSN:
1369-703X
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; cellulose; convection; enzymatic hydrolysis; glucose; kinetics; mass transfer; models; porosity; rice straw; saccharification; yeasts;     Show all 14 Subjects
Abstract:
... In this work, a solid simultaneous saccharification and fermentation (SSSF) system with N₂ stripping was constructed for ethanol production, and the glucose inhibition to enzymatic saccharification of cellulose and the ethanol inhibition to anaerobic fermentation of yeast cells could be relieved. First, effects of flow rate of carrier gas and initial yeast concentration on mass transfer of ethanol ...
DOI:
10.1016/j.bej.2020.107921

9. Pretreatment of sugarcane bagasse by OX‐B to enhancing the enzymatic hydrolysis for ethanol fermentation

Author:
da Siva Martins, Luiza Helena; Komesu, Andrea; Moreira Neto, João; de Oliveira, Johnatt Allan Rocha; Rabelo, Sarita Cândida; da Costa, Aline Carvalho
Source:
Journal of food process engineering 2021 v.44 no.2 pp. e13579
ISSN:
0145-8876
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; cellobiose; chlorine; enzymatic hydrolysis; experimental design; fuel production; glucose; lignocellulose; sugarcane bagasse; wastewater treatment;     Show all 12 Subjects
Abstract:
... The main by‐product of the alcohol industry is the sugarcane bagasse, which can be used to produce second generation ethanol. Studies about pretreatment technologies are increasingly greater, a fundamental step for the efficient this fuel production. The reagents and wastewater treatment costs are still a bottleneck for this type of technology. The present work aimed to study the pretreatments of ...
DOI:
10.1111/jfpe.13579

10. 3D Taraxacum-like porous Pd nanocages with Bi doping: High-performance non-Pt electrocatalysts for ethanol oxidation reaction

Author:
Li, Xingchi; You, Huaming; Wang, Cheng; Liu, Dongmei; Yu, Rui; Guo, Siyu; Wang, Yuan; Du, Yukou
Source:
Journal of colloid and interface science 2021 v.591 pp. 203-210
ISSN:
0021-9797
Subject:
ethanol,   etc   ; electron transfer; geometry; liquids; nanosheets; oxidation;     Show all 6 Subjects
Abstract:
... Modifying the electronic structure and optimizing the geometric structure can expeditiously tune the electrocatalytic properties of catalysts, resulting in considerably enhanced electrocatalytic performance towards electrocatalytic oxidation of liquid fuels. We herein report a simple synthetic strategy to prepare Bi-doped 3D taraxacum-like Pd nanocages (NCs) composed of porous nanosheets, which po ...
DOI:
10.1016/j.jcis.2021.02.018

11. Potential ethanol biorefinery sites based on agricultural residues in Alberta, Canada: A GIS approach with feedstock variability

Author:
Zheng, Yanan; Doll, Claire A.; Qiu, Feng; Anderson, Jay A.; Hauer, Grant; Luckert, M.K.
Source:
Biosystems engineering 2021 v.204 pp. 223-234
ISSN:
1537-5110
Subject:
ethanol,   etc   ; biorefining; crop yield; feedstocks; ovens; Alberta;     Show all 6 Subjects
Abstract:
... Though numerous studies have investigated optimal locations for biorefineries given the availability of feedstock supplies, few have considered that these supplies could vary over time, thereby potentially failing to meet feedstock requirements. In this paper, we develop a process for identifying a shortlist of five potentially viable biorefinery sites in Alberta, and then consider the stochastic ...
DOI:
10.1016/j.biosystemseng.2021.01.010

12. Doubly N-confused phlorin and phlorinone analogue

Author:
Wang, Runju; Yin, Ying; Xu, Kui; Wu, Lamei; Huang, Zhengxi; Hsu, Hsien-Yi; Sessler, Jonathan L.; Zhang, Zhan
Source:
Chemical communications 2021 v.57 no.22 pp. 2772-2775
ISSN:
1364-548X
Subject:
ethanol,   etc   ; X-ray diffraction; absorption; electrochemistry; methanol;     Show all 5 Subjects
Abstract:
... A doubly N-confused phlorin and phlorinone analogue were synthesized from a β,β′-linked dipyrromethane precursor and characterized by means of NMR and UV-Vis spectroscopies, X-ray crystallography, and electrochemistry. Solvents have a considerable impact on the optical absorption of the doubly N-confused phlorin so that it can differentiate simple alcohols such as methanol and ethanol. ...
DOI:
10.1039/d1cc00216c

13. Ni-catalyzed reductive decyanation of nitriles with ethanol as the reductant

Author:
Wu, Ke; Ling, Yichen; Sun, Nan; Hu, Baoxiang; Shen, Zhenlu; Jin, Liqun; Hu, Xinquan
Source:
Chemical communications 2021 v.57 no.18 pp. 2273-2276
ISSN:
1364-548X
Subject:
ethanol,   etc   ; heterocyclic compounds; hydrides; nitriles; reducing agents;     Show all 5 Subjects
Abstract:
... A nickel-catalyzed reductive decyanation of aromatic nitriles has been developed, in which the readily available and abundant ethanol was applied as the hydride donor. Various functional groups on the aromatic rings, such as alkoxyl, amino, imino and amide, were compatible in this catalytic protocol. Heteroaryl, benzylic and alkenyl nitriles were also tolerated. Mechanistic investigation indicated ...
DOI:
10.1039/d0cc07743g

14. Resveratrol attenuates excessive ethanol exposure-induced β-cell senescence in rats: A critical role for the NAD+/SIRT1-p38MAPK/p16 pathway

Author:
Luo, Gang; Xiao, Lin; Wang, Dongxia; Wang, Ning; Luo, Can; Yang, Xuefeng; Hao, Liping
Source:
The Journal of nutritional biochemistry 2021 v.89 pp. 108568
ISSN:
0955-2863
Subject:
ethanol,   etc   ; diabetes; liquids; males; nicotinamide; resveratrol;     Show all 6 Subjects
Abstract:
... Resveratrol has been found to improve ethanol-induced diabetes. Although pancreatic β-cell senescence-induced β-cell mass loss plays a critical role in the progression of diabetes, the exact mechanism by which resveratrol improves ethanol-triggered β-cell senescence and its role in ethanol-induced diabetes remains unknown. Male Sprague-Dawley rats were fed either control or ethanol liquid diets co ...
DOI:
10.1016/j.jnutbio.2020.108568

15. Ethanol induced changes in structural, morphological, and functional properties of whey proteins isolates: Influence of ethanol concentration

Author:
Feng, Yangyang; Ma, Xiaoli; Kong, Baohua; Chen, Qian; Liu, Qian
Source:
Food hydrocolloids 2021 v.111 pp. 106379
ISSN:
0268-005X
Subject:
ethanol,   etc   ; disulfides; hydrocolloids; hydrogen; hydrophobicity; whey;     Show all 6 Subjects
Abstract:
... The changes induced by ethanol treatments at different concentrations (20%, 40%, 60%, and 80%, v/v) on the structural, morphological and functional properties of native whey protein isolates (WPI) were investigated. The results showed that the secondary and tertiary structures of native WPI were clearly altered with ethanol treatment. The resulting molecular unfolding and subsequent aggregation wa ...
DOI:
10.1016/j.foodhyd.2020.106379

16. A unique Co(iii)-peptoid as a fast electrocatalyst for homogeneous water oxidation with low overpotential

Author:
Ruan, Guilin; Engelberg, Lee; Ghosh, Pritam; Maayan, Galia
Source:
Chemical communications 2021 v.57 no.7 pp. 939-942
ISSN:
1364-548X
Subject:
ethanol,   etc   ; N-substituted glycines; cobalt; oxidation;     Show all 4 Subjects
Abstract:
... A peptoid trimer incorporating terpyridine and ethanol forms an intermolecular cobalt(iii) complex, which performs as a soluble electrocatalyst for water oxidation with a minimal overpotential of 350 mV and a high turnover frequency of 108 s⁻¹. The ethanolic group facilitates water binding thus mimicking an enzymatic second coordination sphere. ...
DOI:
10.1039/d0cc06912d

17. Identification, separation by spiral high-speed counter-current chromatography, and quantification of 7-chloro-5-methyl-2H-1,4-benzothiazin-3(4H)-one, an impurity in the thioindigoid color additive D&C Red No. 30 and its lakes

Author:
Weisz, Adrian; Perez-Gonzalez, Marianita; Wood, Jackson F.; Ridge, Clark D.; Ito, Yoichiro
Source:
Journal of chromatography 2021 v.1637 pp. 461863
ISSN:
0021-9673
Subject:
ethanol,   etc   ; color; countercurrent chromatography; hydrophobicity; solvents;     Show all 5 Subjects
Abstract:
... An impurity in the color additives D&C Red No. 30 (R30) and D&C Red No. 30 lakes (R30L) was newly identified and characterized as 7-chloro-5-methyl-2H-1,4-benzothiazin-3(4H)-one (BTZ), and its extent and level in certified batches of these color additives was determined. BTZ was extracted from the dye with ethanol, resulting in a crude extract enriched to a concentration of over 60%. BTZ was then ...
DOI:
10.1016/j.chroma.2020.461863

18. Three-dimensional, symmetrically assembled microfluidic device for lipid nanoparticle production

Author:
Kimura, Niko; Maeki, Masatoshi; Sasaki, Kosuke; Sato, Yusuke; Ishida, Akihiko; Tani, Hirofumi; Harashima, Hideyoshi; Tokeshi, Manabu
Source:
RSC advances 2021 v.11 no.3 pp. 1430-1439
ISSN:
2046-2069
Subject:
ethanol,   etc   ; drugs; fluid mechanics; genes; lipids;     Show all 5 Subjects
Abstract:
... Sub 100 nm-sized lipid nanoparticles (LNPs) have been widely used in drug delivery systems (DDSs). The size of the LNPs is an important parameter for the DDS performance, such as biodistribution and gene silencing using siRNAs. However, the LNPs prepared by the conventional preparation method show a wide size distribution. To improve the LNP size distribution, we developed a microfluidic device, n ...
DOI:
10.1039/d0ra08826a

19. Biorefinery on-demand: Modulating pretreatments to recover lignin, hemicellulose, and extractives as co-products during ethanol production

Author:
Scopel, Eupídio; Rezende, Camila A.
Source:
Industrial crops and products 2021 v.163 pp. 113336
ISSN:
0926-6690
Subject:
ethanol; ethanol production,   etc   ; Cenchrus purpureus; alkali treatment; biomass; biorefining; coproducts; decision making; fractionation; hemicellulose; lignin; liquids;     Show all 12 Subjects
Abstract:
... In this work, we designed three scenarios to obtain ethanol as the main product from an elephant grass biorefinery and maximize the recovery of extractives, hemicellulose, and lignin. Common pretreatment methodologies, such as diluted acid and alkaline treatments, ball milling and pressurized liquid extractions (PLE) were combined to provide a detailed quantification of the products obtained in ea ...
DOI:
10.1016/j.indcrop.2021.113336

20. Integral valorization of orange peel waste through optimized ensiling: Lactic acid and bioethanol production

Author:
Fazzino, Filippo; Mauriello, Francesco; Paone, Emilia; Sidari, Rossana; Calabrò, Paolo S.
Source:
Chemosphere 2021 v.271 pp. 129602
ISSN:
0045-6535
Subject:
ethanol; ethanol production,   etc   ; acetic acid; biogas; biorefining; feeds; lactic acid; leachates; liquids; orange peels; pectins; wastes;     Show all 12 Subjects
Abstract:
... The management of the huge amount of orange peel waste (OPW) is a complex issue although it has a very high potential in terms of biorefining. One of the main problems in the valorisation of OPW is the seasonality of its production with the ensiling method being largely proposed as a possible solution. During the ensiling process, value added chemicals including lactic acid, acetic acid and ethano ...
DOI:
10.1016/j.chemosphere.2021.129602