Measurement of the relative hydrophobicity of organic compounds without organic solvent. Effects of salt composition and pH on organic acids and nonionic compounds

2001 ◽  
Vol 90 (9) ◽  
pp. 1366-1374 ◽  
Author(s):  
Nellie Gulyaeva ◽  
Alexander Zaslavsky ◽  
Arnon Chait ◽  
Boris Zaslavsky
Keyword(s):  
Organic Solvent ◽  
Organic Acids ◽  
Organic Compounds ◽  
Solvent Effects ◽  
Salt Composition

scholarly journals Organic compounds in root exudates of Miscanthus × Giganteus greef et deu and limitation of microorganisms in its rhizosphere by nutrients

2010 ◽  
Vol 58 (5) ◽  
pp. 203-208 ◽  
Author(s):  
Hana Kaňová ◽  
Joffrey Carre ◽  
Valerie Vranová ◽  
Klement Rejšek ◽  
Pavel Formánek
Keyword(s):  
Organic Acids ◽  
Organic Compounds ◽  
Respiration Rate ◽  
Root Exudates ◽  
Plant Nutrients ◽  
Rhizospheric Soil ◽  
Polluted Soils ◽  
Rhizosphere Microorganisms ◽  
Miscanthus Giganteus

This study was conducted to determine the composition of sugars and organic acids in root exudates of Miscanthus × Giganteus and to find out if microorganisms of the rhizospheric soil are limited by mi­ne­ral nutrients. The following sugars and organic acids were determined in root exudates of this plant: glucose, saccharose, and acids such as succinic, propionic, citric, tartaric, malic, oxalic, ascorbic, acetic and fumaric. Respiration of soil from rhizosphere of Miscanthus × Giganteus was found to be limited by N, K and Ca. Respiration rate after application of mineral compounds increased in following orther: nitrate > calcium > potassium > ammonium, giving approx. 165, 99, 52 and 31 % increase compared to control. Further research is necessary to determine the role of plant nutrients from the point of their limitations for rhizosphere microorganisms, to broader very rare knowledges in this topic, especially for polluted soils to stimulate efficiency of phytoremediations.

scholarly journals Prediction of Hydroxymethylfurfural Yield in Glucose Conversion through Investigation of Lewis Acid and Organic Solvent Effects

ACS Catalysis ◽  
2020 ◽  
Vol 10 (24) ◽  
pp. 14707-14721
Author(s):  
Yeonjoon Kim ◽  
Ashutosh Mittal ◽  
David J. Robichaud ◽  
Heidi M. Pilath ◽  
Brian D. Etz ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Lewis Acid ◽  
Solvent Effects

scholarly journals Extraction of Nobiletin and Tangeretin From Peels of Shekwasha and Ponkan Using [C2mim][(MeO)(H)PO2] and Centrifugation

2019 ◽  
Vol 14 (5) ◽  
pp. 1934578X1984581 ◽  
Author(s):  
Hitomi Mizuno ◽  
Hibiki Yoshikawa ◽  
Toyonobu Usuki
Keyword(s):  
Organic Solvent ◽  
Organic Compounds ◽  
Efficient Method ◽  
Extraction Method ◽  
Biological Activities ◽  
Extraction Yield ◽  
Citrus Reticulata ◽  
Natural Sources ◽  
Citrus Depressa ◽  
Anti Inflammation

The polymethoxyflavonoids nobiletin and tangeretin are isolated from peels of shekwasha ( Citrus depressa Hayata) and ponkan ( Citrus reticulata Blanco). These natural products possess biological activities, including anticancer and anti-inflammation properties. This report describes an efficient method for the extraction and isolation of nobiletin and tangeretin from citrus peels using 1-ethyl-3-methylimidazolium methylphosphonate ([C2mim][(MeO)(H)PO2]) and centrifugation/decantation. The results showed that the extraction yield of nobiletin and tangeretin using [C2mim][(MeO)(H)PO2]/organic solvent (1:1 w/w) was 1.4 to 1.6 times higher than that using organic solvent. This extraction method is expected to be applicable for obtaining other organic compounds from natural sources.

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