Biochemical conversion of partially cyclized squalene 2,3-oxide types to the lanosterol system. Views on the normal enzymic cyclization process

1970 ◽  
Vol 92 (24) ◽  
pp. 7206-7207 ◽  
Author(s):  
Eugene E. Van Tamelen ◽  
Jack H. Freed
Keyword(s):  
Biochemical Conversion ◽  
Cyclization Process

Biogas Production Using Anaerobic Digestion of Industrial Waste

2016 ◽  
Vol 832 ◽  
pp. 55-62
Author(s):  
Ján Gaduš ◽  
Tomáš Giertl ◽  
Viera Kažimírová
Keyword(s):  
Anaerobic Digestion ◽  
Industrial Waste ◽  
Large Scale ◽  
Biogas Production ◽  
Biogas Plant ◽  
Parallel Operation ◽  
Paper Production ◽  
Biochemical Conversion ◽  
Mixed Biomass ◽  
Economic Balance

In the paper experiments and theory of biogas production using industrial waste from paper production as a co-substrate are described. The main aim of the experiments was to evaluate the sensitivity and applicability of the biochemical conversion using the anaerobic digestion of the mixed biomass in the pilot fermentor (5 m3), where the mesophillic temperature was maintained. It was in parallel operation with a large scale fermentor (100 m3). The research was carried out at the biogas plant in Kolíňany, which is a demonstration facility of the Slovak University of Agriculture in Nitra. The experiments proved that the waste arising from the paper production can be used in case of its appropriate dosing as an input substrate for biogas production, and thus it can improve the economic balance of the biogas plant.

Cu2O-Catalyzed Tandem Ring-Opening/Coupling Cyclization Process for the Synthesis of 2,3-Dihydro-1,4-benzodioxins

2008 ◽  
Vol 10 (17) ◽  
pp. 3899-3902 ◽  
Author(s):  
Weiliang Bao ◽  
Yunyun Liu ◽  
Xin Lv ◽  
Weixing Qian
Keyword(s):  
Ring Opening ◽  
Cyclization Process

Highly selective introduction of heteroatom groups to isocyanides and its application to electrocyclic reactions

2012 ◽  
Vol 85 (4) ◽  
pp. 785-799 ◽  
Author(s):  
Akiya Ogawa ◽  
Taichi Tamai ◽  
Takenori Mitamura ◽  
Akihiro Nomoto
Keyword(s):  
Cross Coupling ◽  
Molecular Iodine ◽  
Radical Cyclization ◽  
Sharp Contrast ◽  
Quinoline Derivatives ◽  
Coupling Reactions ◽  
Electrocyclic Reactions ◽  
Cross Coupling Reactions ◽  
Cyclization Process ◽  
Synthetic Intermediates

Photoinduced cyclization of o-alkenylaryl isocyanides with (PhS)2 in the presence of (PhTe)2 affords the corresponding bisthiolated indene derivatives in good yields via radical cyclization process by thio radical. The procedure can be applied to the construction of tetracyclic systems by using bis(o-aminophenyl) disulfides in place of (PhS)2. In sharp contrast, when o-alkynylaryl isocyanides are employed as the substrates, novel electrocyclic reactions take place upon photoirradiation or heating at 40~80 °C to generate quinoline 2,4-biradical species, which are trapped with organic diselenides, ditellurides, and molecular iodine to give the corresponding 2,4-diseleno-, ditelluro-, and diiodo-quinoline derivatives, respectively, in good yields. The obtained quinoline derivatives are useful synthetic intermediates; for example, cross-coupling reactions using 2,4-diiodoquinolines lead to the preparation of functionalized quinoline derivatives.

A tandem annulation with a [1,3]-hydride transfer as the key step leading to isochromans

2017 ◽  
Vol 53 (77) ◽  
pp. 10652-10655 ◽  
Author(s):  
Yingwei Wang ◽  
Guangxun Li ◽  
Hongxin Liu ◽  
Zhuo Tang ◽  
Yuan Cao ◽  
...  
Keyword(s):  
Hydride Transfer ◽  
Cyclization Process

The first [1,3]-hydride transfer/cyclization process for oxacarbenium isomerization.

scholarly journals Biochemical conversion of fruit rind of Telfairia occidentalis (fluted pumpkin) and poultry manure

2018 ◽  
Vol 40 (23) ◽  
pp. 2799-2811 ◽  
Author(s):  
Samuel O. Dahunsi ◽  
Solomon Oranusi ◽  
Vincent E. Efeovbokhan ◽  
Soraya Zahedi ◽  
John O. Ojediran ◽  
...  
Keyword(s):  
Poultry Manure ◽  
Biochemical Conversion ◽  
Fluted Pumpkin ◽  
Telfairia Occidentalis ◽  
Fruit Rind

scholarly journals Toward Biochemical Conversion of Lignocellulose On-Farm: Pretreatment and Hydrolysis of Corn Stover in Situ

2017 ◽  
Vol 60 (4) ◽  
pp. 1025-1033
Author(s):  
Alicia A. Modenbach ◽  
Sue E. Nokes ◽  
Michael D. Montross ◽  
Barbara L. Knutson
Keyword(s):  
Enzymatic Hydrolysis ◽  
Corn Stover ◽  
Conversion Efficiency ◽  
High Solids ◽  
Cellulose Conversion ◽  
Biochemical Conversion ◽  
High Solids Loading ◽  
Combined Pretreatment ◽  
Pretreatment Conditions ◽  
On Farm

Abstract. High-solids lignocellulosic pretreatment using NaOH followed by high-solids enzymatic hydrolysis was evaluated for an on-farm biochemical conversion process. Increasing the solids loadings for these processes has the potential for increasing glucose concentrations and downstream ethanol production; however, sequential processing at high-solids loading similar to an on-farm cellulose conversion system has not been studied. This research quantified the effects of high-solids pretreatment with NaOH and subsequent high-solids enzymatic hydrolysis on cellulose conversion. As expected, conversion efficiency was reduced; however, the highest glucose concentration (40.2 g L-1), and therefore the highest potential ethanol concentration, resulted from the high-solids combined pretreatment and hydrolysis. Increasing the enzyme dosage improved cellulose conversion from 9.6% to 36.8% when high-solids loadings were used in both unit operations; however, increasing NaOH loading and pretreatment time did not increase the conversion efficiency. The enzyme-to-substrate ratio had a larger impact on cellulose conversion than the NaOH pretreatment conditions studied, resulting in recommendations for an on-farm bioconversion system. Keywords: Corn stover, Enzymatic hydrolysis, Enzyme loading, High solids, Low solids, Sodium hydroxide.

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