Factors affecting the solution of inorganic salts in organic solvents

1957 ◽  
Vol 4 (3-4) ◽  
pp. 187-204 ◽  
Author(s):  
Leonard I. Katzin
Keyword(s):  
Organic Solvents ◽  
Inorganic Salts ◽  
Factors Affecting

Evaluation of Aspects Controlling Crystallization of Nitrofurantoin

2019 ◽  
Vol 800 ◽  
pp. 9-13
Author(s):  
Aija Trimdale ◽  
Agris Bērziņš
Keyword(s):  
Gibbs Energy ◽  
Quantum Chemical Calculations ◽  
Organic Solvents ◽  
Quantum Chemical ◽  
Polymer Additives ◽  
Factors Affecting ◽  
X Ray

Nitrofurantoin was crystallized from multiple mixtures of water and organic solvents with and without additives to try to find and identify factors affecting phase obtained in crystallization and provide possible information on crystallization control. Obtained crystals were identified with powder X-ray diffractometry. Crystallization control possibilities were evaluated by using polymer additives and crystallization additives, by also using quantum chemical calculations to investigate the association of nitrofurantoin and additive molecules and calculate Gibbs energy of association.

Activity, stability and enantioselectivity of lipase-coated microcrystals of inorganic salts in organic solvents

2009 ◽  
Vol 27 (5-6) ◽  
pp. 283-289 ◽  
Author(s):  
Jin Chuan Wu ◽  
Jing Xia Yang ◽  
Si Han Zhang ◽  
Yvonne Chow ◽  
Md. Mahabubur Rahman Talukder ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Inorganic Salts

Factors affecting the lipase catalyzed transesterification reactions of 3-hydroxy esters in organic solvents.

1993 ◽  
Vol 4 (5) ◽  
pp. 1007-1016 ◽  
Author(s):  
Uwe Bornscheuer ◽  
Andrea Herar ◽  
Lars Kreye ◽  
Volker Wendel ◽  
Andreas Capewell ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Factors Affecting ◽  
Hydroxy Esters

FACTORS AFFECTING VIRULENCE AND PIGMENT PRODUCTION OF XANTHOMONAS PHASEOLI VAR. FUSCANS

1967 ◽  
Vol 45 (12) ◽  
pp. 2367-2374 ◽  
Author(s):  
P. K. Basu ◽  
V. R. Wallen
Keyword(s):  
Growth Rate ◽  
Phaseolus Vulgaris ◽  
Living Cells ◽  
Pigment Production ◽  
Inorganic Salts ◽  
Phaseolus Vulgaris L ◽  
Factors Affecting ◽  
Ph Values ◽  
Bean Plants ◽  
The Media

Isolates of Xanthomonas phaseoli var. fuscans (Burkh.) Starr & Burkh. obtained from naturally infected bean (Phaseolus vulgaris L.) seeds stored at 10 C for 2–4 months were more virulent, as indicated by a stunting effect on Sanilac bean plants, than isolates obtained from seeds stored for 7–24 months. Neither the rate of growth of the organism nor its ability to produce a brown diffusible pigment was correlated with virulence. Growth rate and pigment production of all isolates in nutrient broth were similar and reached a maximum after 36 and 48 h respectively. In a medium containing inorganic salts and yeast extract, the growth rate of the organism was relatively slow and pigment development depended upon amendments added to the medium. Tyrosine enhanced, while glucose retarded, pigment production, but neither affected the growth of the pathogen adversely. The formation and color of the pigment in the media were not affected by pH values ranging from 5.5 to 9.0. The presence of living cells was essential for the continued production of the pigment. The melanoid nature of the pigment was demonstrated.

BIOCHEMISTRY OF THE USTILAGINALES: V. FACTORS AFFECTING THE FORMATION OF USTILAGIC ACID BY USTILAGO ZEAE

1951 ◽  
Vol 29 (4) ◽  
pp. 403-410 ◽  
Author(s):  
J. A. Thorn ◽  
R. H. Haskins
Keyword(s):  
Submerged Culture ◽  
Corn Steep Liquor ◽  
Ammonium Salts ◽  
Inorganic Salts ◽  
Factors Affecting ◽  
The Media ◽  
Steep Liquor

In a study of factors affecting the formation of ustilagic acid by Ustilago zeae (PRL 119) in submerged culture, yields of the acid ranging from 5 to 23 mgm. per ml. were obtained in three to five days, depending upon the concentration of medium constituents and the rate of aeration. The media employed contained cerelose, urea, corn steep liquor, and inorganic salts. Yields of ustilagic acid were usually between 8 and 15 mgm. per ml., corresponding to 12 to 23% conversion of the available glucose, on a carbon basis. Yields of the acid increased with increasing rates of aeration. Urea gave slightly higher yields than did the ammonium salts tested. Corn steep liquor concentration was optimal at 0.06%. Yields of ustilagic acid increased with increasing cerelose concentration, but the rate of conversion of carbohydrate into the acid decreased. About the same yields of ustilagic acid were obtained in shaken 500-ml. flasks, in nine-liter, and 30-liter fermentors.

Nanostructure of Binary Organogels via Trigonal Acids and Pyridine Derivatives

2013 ◽  
Vol 641-642 ◽  
pp. 777-780
Author(s):  
Min Li
Keyword(s):  
Organic Solvents ◽  
Crucial Role ◽  
Molecular Structures ◽  
Hydrophobic Core ◽  
Pyridine Derivatives ◽  
Factors Affecting ◽  
Gelation Behavior ◽  
Main Factors

We reported here the gelation behaviors of binary trigonal acids and bipyridine derivatives mixtures in various organic solvents. Their gelation behaviors in 20 solvents were tested as new organic gelators. It was shown that the molecular shapes and substituent groups in these compounds played a crucial role in the gelation behavior of the compounds. While the trigonal acid with aromatic core can gel in acetone and ethanol, another trigonal acid with hydrophobic core can only gel in aniline. The molecular structures and substituent groups of bipyridine derivatives have also played an important role in changing the gelation behaviors and assembly states. SEM observations reveal that the molecular structures and the identity of the solvents are the main factors affecting the structures of the aggregates in the gels. Experimentally, different microstructures of the gels were observed. As example, the aggregates of trigonal compound in acetone, ethanol, or aniline adopt structures of belt-like aggregates or thin nanofibers, respectively.

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