Evaluation of Melting and Crystalline Relaxation Temperatures of Fatty Acid Monolayers on the Water Surface and Their Importances for Molecular Aggregation States in Monolayers

1992 ◽  
Vol 65 (3) ◽  
pp. 864-870 ◽  
Author(s):  
Tisato Kajiyama ◽  
Yushi Oishi ◽  
Motoko Uchida ◽  
Naoaki Morotomi ◽  
Jun-ichi Ishikawa ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Water Surface ◽  
Molecular Aggregation

Classification for molecular aggregation structure of monolayers on the water surface

1995 ◽  
Vol 2 (2) ◽  
pp. 107-116 ◽  
Author(s):  
Tisato Kajiyama ◽  
Hiroyuki Kozuru ◽  
Yoshinari Takashima ◽  
Yushi Oishi ◽  
Kazuaki Suehiro
Keyword(s):  
Water Surface ◽  
Molecular Aggregation ◽  
Aggregation Structure

Elasticity of two-dimensional crystalline monolayers of fatty acid salts at an air–water surface

Soft Matter ◽  
2009 ◽  
Vol 5 (1) ◽  
pp. 203-207 ◽  
Author(s):  
Jean Daillant ◽  
Jérémy Pignat ◽  
Sophie Cantin ◽  
Françoise Perrot ◽  
Serge Mora ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Water Surface ◽  
Two Dimensional ◽  
Fatty Acid Salts ◽  
Acid Salts

Formation of Metallic Langmuir Film on the Water Surface with Fatty Acid and BEDO-TTF Molecules

2001 ◽  
Vol 105 (21) ◽  
pp. 4921-4927 ◽  
Author(s):  
Hitoshi Ohnuki ◽  
Bernard Desbat ◽  
Michel Giffard ◽  
Mitsuru Izumi ◽  
Tatsuro Imakubo ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Water Surface ◽  
Langmuir Film

Effect of Ionic Repulsion among Hydrophilic Groups on Aggregation Structure of Fatty Acid Monolayer on the Water Surface

Langmuir ◽  
1997 ◽  
Vol 13 (9) ◽  
pp. 2527-2532 ◽  
Author(s):  
Yushi Oishi ◽  
Yoshinari Takashima ◽  
Kazuaki Suehiro ◽  
Tisato Kajiyama
Keyword(s):  
Fatty Acid ◽  
Water Surface ◽  
Aggregation Structure

scholarly journals Estimation of antimicrobial activities and fatty acid composition of actinobacteria isolated from water surface of underground lakes from Badzheyskaya and Okhotnichya caves in Siberia

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5832 ◽  
Author(s):  
Irina V. Voytsekhovskaya ◽  
Denis V. Axenov-Gribanov ◽  
Svetlana A. Murzina ◽  
Svetlana N. Pekkoeva ◽  
Eugeniy S. Protasov ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Acid Composition ◽  
Water Surface ◽  
Biological Activities ◽  
Saturated Fatty Acids ◽  
Antibacterial Properties ◽  
Promising Source

Extreme and unusual ecosystems such as isolated ancient caves are considered as potential tools for the discovery of novel natural products with biological activities. Actinobacteria that inhabit these unusual ecosystems are examined as a promising source for the development of new drugs. In this study we focused on the preliminary estimation of fatty acid composition and antibacterial properties of culturable actinobacteria isolated from water surface of underground lakes located in Badzheyskaya and Okhotnichya caves in Siberia. Here we present isolation of 17 strains of actinobacteria that belong to the Streptomyces, Nocardia and Nocardiopsis genera. Using assays for antibacterial and antifungal activities, we found that a number of strains belonging to the genus Streptomyces isolated from Badzheyskaya cave demonstrated inhibition activity against bacteria and fungi. It was shown that representatives of the genera Nocardia and Nocardiopsis isolated from Okhotnichya cave did not demonstrate any tested antibiotic properties. However, despite the lack of antimicrobial and fungicidal activity of Nocardia extracts, those strains are specific in terms of their fatty acid spectrum. When assessing fatty acid profile, we found that polyunsaturated fatty acids were quantitatively dominant in extracts of Nocardia sp. and Streptomyces sp. grown in different media. Saturated fatty acids were the second most abundant type in the fatty acid profile. It was due to palmitic acid. Also, a few monounsaturated fatty acids were detected. The obtained materials can become a basis for development of approaches to use bacteria isolated from caves as a biological sources of bioactive compounds to create medical and veterinary drugs.

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