Search results for "Phenol content"

showing 3 items of 3 documents

Halophila stipulacea descriptors in the native area (Red Sea): A baseline for future comparisons with native and non-native populations

2018

Abstract Halophila stipulacea is a small tropical seagrass species native to the Red Sea. Due to its invasive character, there is growing interest in understanding its ability to thrive in a broad range of ecological niches. We studied temporal (February 2014 and July 2014), depth (5, 9, 18 m) and spatial (NB and SB) related dynamics of H. stipulacea meadows in the northern Gulf of Aqaba. We evaluated changes in density, morphometry, biomass, and biochemical parameters alongside the reproductive effort. In both sites, maximal growth and vegetative performance occurred in the summer with a marked increase of 35% in shoot density and 18% in biomass; PAR reduction with season and depth induced…

0106 biological sciencesDepth-adaptationSettore BIO/07 - EcologiaSettore BIO/07Range (biology)Anthropogenic pressuresPhenol contentAquatic ScienceSeagrass Temporal changes Depth-adaptation Anthropogenic pressures Morphometric and population parameters Phenol content Nitrogen storage Stable isotopesOceanography010603 evolutionary biology01 natural sciencesMorphometric and population parametersNitrogen storageSeagrassStable isotopesEcological nicheHalophila stipulaceaBiomass (ecology)biologyEcology010604 marine biology & hydrobiologyBaseline (sea)food and beveragesTemporal changesGeneral Medicinebiology.organism_classificationPollutionSexual reproductionSeagrassShoot
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Recovery of oil with unsaturated fatty acids and polyphenols from chaenomelessinensis (Thouin) Koehne: Process optimization of pilot-scale subcritica…

2017

The potential effects of three modern extraction technologies (cold-pressing, microwaves and subcritical fluids) on the recovery of oil from Chaenomelessinensis (Thouin) Koehne seeds have been evaluated and compared to those of conventional chemical extraction methods (Soxhlet extraction). This oil contains unsaturated fatty acids and polyphenols. Subcritical fluid extraction (SbFE) provided the highest yield—25.79 g oil/100 g dry seeds—of the three methods. Moreover, the fatty acid composition in the oil samples was analysed using gas chromatography–mass spectrometry. This analysis showed that the percentages of monounsaturated (46.61%), and polyunsaturated fatty acids (42.14%), after appl…

FlavonoidPharmaceutical ScienceMass spectrometry01 natural sciencesGas Chromatography-Mass SpectrometryArticleAnalytical Chemistrylcsh:QD241-4410404 agricultural biotechnologylcsh:Organic chemistryResponse surface methodologyDrug DiscoveryPlant OilsProcess optimizationPhysical and Theoretical Chemistry<i>Chaenomelessinensis</i> (Thouin) Koehne seed oil; subcritical fluid extraction; response surface methodology; fatty acid composition; polyphenol contentMicrowavesRosaceaeChaenomelessinensis (Thouin) Koehne seed oil; Fatty acid composition; Polyphenol content; Response surface methodology; Subcritical fluid extraction; Organic Chemistrychemistry.chemical_classificationChromatography010405 organic chemistryPolyphenol contentExtraction (chemistry)Organic ChemistryPilot scalePolyphenols04 agricultural and veterinary sciences040401 food scienceChaenomelessinensis (Thouin) Koehne seed oil0104 chemical scienceschemistryChemistry (miscellaneous)PolyphenolFatty Acids UnsaturatedMolecular MedicineFatty acid compositionFatty acid compositionSubcritical fluid extractionPolyunsaturated fatty acid
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Comparing the LC-MS Phenolic Acids Profiles of Seven Different Varieties of Brown Rice (Oryza sativa L.)

2022

Brown rice, an important material of whole-grain food, is increasingly popular for its health benefits. Thus, seven varieties of brown rice from southern China were analyzed in this study, concerning the free and bound phenolic compounds in the extract. The phenolic profiles of different brown rice were obtained and compared by the combination of HPLC and LC-MS analysis, in which eleven phenolic acids were identified. It was indicated that the total phenolic contents of different brown rice varied from 92.32 to 196.54 mg of gallic acid equivalent (GAE)/100 g DW. Ferulic acid and p-coumaric acid, free and bound, dominated within the phenolic acids. To be mentioned, the total phenols of Luoti…

Health (social science)Phenolic acidsfood and beveragesPlant ScienceHealth Professions (miscellaneous)MicrobiologyAliments enriquitsAliments AnàlisiAlimentosNutriciónFoodBrown ricebrown rice; total polyphenol content; phenolic acids; free and bound formsTotal polyphenol contentFood ScienceFree and bound formsNutrition
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