Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
SUPERCRITICAL-FLUID EXTRACTION OF CARBOXYLIC AND FATTY-ACIDS FROM AGARICUS SPP MUSHROOMS
Date
1994-03-01
Author
ABDULLAH, MI
YOUNG, JC
GAMES, DE
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
231
views
0
downloads
Cite This
Material obtained by the CO2 supercritical fluid extraction (SFE) of the wild and cultivated mushrooms Agaricus silvicola and Agaricus bisporus, respectively, was analyzed by g chromatography (GC)-mass spectrometry and GC-Fourier transform infrared spectrometry. SFE gave results comparable with classical extraction techniques for free fatty acids and esters but with fewer manipulative steps and also resulted in the characterization of acids not previously reported from these sources. The organic acids identified included all of the C5-C26 saturated fatty acids, with palmitic and stearic acid predominating, the C-15-C22 fatty acid methyl esters, and the C4-C-11 alpha,omega-dicarboxylic acids. Benzoic acid was a major constituent in the A. silvicola extract but was only a minor constituent in that from A. bisporus. Only the C-8-C20 monocarboxylic saturated fatty acids had been previously identified from these species. Unsaturated fatty acids were virtually absent, with only minor amounts of hexadecenoic and octadecenoic acids observed.
Subject Keywords
General Chemistry
,
General Agricultural and Biological Sciences
URI
https://hdl.handle.net/11511/66669
Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
DOI
https://doi.org/10.1021/jf00039a023
Collections
Department of Chemistry, Article
Suggestions
OpenMETU
Core
PHYTATE CONTENT OF TAIWANESE DIET DETERMINED BY P-31 FOURIER-TRANSFORM NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY
WANG, CF; TSAY, SM; LEE, CY; LIU, SM; ARAS, NK (American Chemical Society (ACS), 1992-06-01)
Phytate and trace element concentrations of the total daily diet of upper social groups in Taiwan were determined by P-31 FT NMR spectroscopy and by instrumental neutron activation analysis, respectively. Results of 15 samples are 2.21 +/- 0.71 g of phytate/kg of dry diet with the range 1.07-3.76 g/kg. The molar ratios of phytate to Zn and Ca were calculated, and bioavailabilities of these elements are discussed.
Chemoenzymatic Conversion of Linoleic Acid into Conjugated Linoleic Acid
Demir, Ayhan Sıtkı; Talpur, Farah N. (American Chemical Society (ACS), 2010-02-10)
An efficient chemoenzymatic method for preparing conjugated linoleic acid (CLA) using free linoleic acid (LA) as a substrate is described. In the first step, LA was transformed into 10-hydroxy-cis-12-octadecenoic acid (HA) by the whole cells of Lactobacillus plantarum after 48 h of incubation. The preincubation of whole cells with 0.03% LA resulted in a better yield of HA (480 mg/g) compared to cells grown without LA. In a second fast microwave step, HA was converted to cis-9, trans-11-octadecadienoic acid ...
Optimization of solid-liquid extraction of resveratrol and other phenolic compounds from milled grape canes (Vitis vinifera)
Karacabey, Erkan; Mazza, Giuseppe (American Chemical Society (ACS), 2008-08-13)
Optimization of the solid-liquid extraction conditions for trans-resveratrol, trans-E-viniferin, ferulic acid, and total phenolics from milled grape canes has been investigated. The temperature and ethanol concentration were found to be major process variables for all responses, whereas the solvent to solid ratio was found not to be significant for any of the responses studied. The yields of transresveratrol, trans-epsilon-viniferin, and total phenolics increased with increasing temperature. Maximum yields ...
Kinetic analysis of aspergillus oryzae cultivations on starch
Bayındırlı, Alev; UNGAN, S (Informa UK Limited, 1991-01-01)
Cultivation of Aspergillus oryzae on starch is described as a combination of two rate processes: Starch hydrolysis and the cellular activities of the fungi including growth, enzyme production and maintenance. Kinetic models are presented to describe growth, enzyme production, starch hydrolysis and uptake of the hydrolysis products. Numerical values of the model parameters indicated that the rate controlling step of A. oryzae growth on starch was not starch hydrolysis, but the substrate uptake process. Gluco...
Analysis of cellulase and polyphenol oxidase production by southern pine beetle associated fungi
Valiev, Abduvali; Ögel, Zümrüt Begüm; Klepzig, Kier D. (Springer Science and Business Media LLC, 2009-09-01)
In this study, the production of extracellular enzymes by fungi associated with southern pine beetle was investigated for the first time. Cellulase and polyphenol oxidase production were analyzed for three beetle associated fungi. Only the mutualistic symbiont Entomocorticium sp. A was found to produce cellulases and polyphenol oxidase. In time course analyses of cellulase production in batch cultures, Entomocorticium sp. A showed maximum activity of 0.109 U/ml and 0.141 U/ml for total cellulase and endoglu...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
M. ABDULLAH, J. YOUNG, and D. GAMES, “SUPERCRITICAL-FLUID EXTRACTION OF CARBOXYLIC AND FATTY-ACIDS FROM AGARICUS SPP MUSHROOMS,”
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
, pp. 718–722, 1994, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66669.