Search results for "Extract"
showing 10 items of 2769 documents
NF ISO 14239 - Qualité du Sol - Systèmes d’incubation de laboratoire destinés à la mesure de la minéralisation de produits chimiques organiques dans …
2017
EA BIOME INRA; Le présent document spécifie les étapes principales d’une méthode d’amplification par réaction de polymérisation en chaîne (PCR) quantitative (qPCR) permettant de mesurer Domaine d'application Le présent document définit six systèmes d'incubation appropriés permettant de mesurer les vitesses et l'étendue de la minéralisation de composés organiques dans le sol par mesurage du dégagement de dioxyde de carbone (CO2) . Tous les systèmes d'incubation peuvent être utilisés avec des composés solubles ou insolubles, mais le choix du système dépend des objectifs globaux de l'étude. Le présent document ne s'applique pas à l'utilisation desdits systèmes pour les bilans de masse, qui son…
Characterization of the aromatic potential of grape berry
2022
IntroductionProbe is a research infrastructure gathering 4 analytical platforms of INRAE and allowing multi-approach and multi-complementarity to be explored and exploited. As a proof of concept, a common study was conducted around the structure and the evolution of the skin of the grape berry and the diffusion of compounds of interest during the winemaking process.Materials and methodsIn this context, the aromatic potential on two Vitis vinifera grape varieties (Carignan and Grenache,) were studied. Berries were harvested at an average potential alcohol of 12% vol. in the vineyard of the Pech Rouge experimental unit (INRAE, Gruissan, France) and separated according to their natural heterog…
Identification of volatile compounds in fruit juices using stir bar sorptive extraction, headspace solid-phase microextraction and solvent-assisted f…
2015
Identification of volatile compounds in fruit juices using stir bar sorptive extraction, headspace solid-phase microextraction and solvent-assisted flavor evaporation. Euro Food Chem 18
Identification of volatile compounds of fruit juice by head space (HSSE) and immersion stir bar sorptive extraction (SBSE) and thermal desorption-cry…
2015
Identification of volatile compounds of fruit juice by head space (HSSE) and immersion stir bar sorptive extraction (SBSE) and thermal desorption-cryogenic focusing-gas chromatography mass spectrometry. 16. International Symposium on Olfaction and Electronic Noses (ISOEN 2015)
Extraction of essential oil from Aloysia citriodora Palau leaves using continuous and pulsed ultrasound: Kinetics, antioxidant activity and antimicro…
2018
International audience; The impact of continuous and pulsed ultrasound pre-treatments (15, 30 and 45 min) followed by conventional hydrodistillation on the characteristics of extracted essential oils (EOs) from dried leaves of Aloysia citriodora Palau was evaluated for the first time. Chemical composition of EOs, antibacterial and antioxidant activities, as well as the contents in heavy metals (iron, copper, lead, arsenic, and cadmium) were determined. Pretreating the leaves with ultrasound (continuous and pulsed), before hydrodistillation, resulted in shorter extraction time (93.81–121.16 min) and higher extraction yields (2.8 (v/w) %) (p < 0.05), compared to the non-sonicated leaves (extr…
Modelling hydrolysis: Simultaneous versus sequential biodegradation of the hydrolysable fractions
2018
Hydrolysis is considered the limiting step during solid waste anaerobic digestion (including co-digestion of sludge and biosolids). Mechanisms of hydrolysis are mechanistically not well understood with detrimental impact on model predictive capability. The common approach to multiple substrates is to consider simultaneous degradation of the substrates. This may not have the capacity to separate the different kinetics. Sequential degradation of substrates is theoretically supported by microbial capacity and the composite nature of substrates (bioaccessibility concept). However, this has not been experimentally assessed. Sequential chemical fractionation has been successfully used to define i…
effect of the extraction of proteins from hemp press-cakes on their functionalities
2019
Plant proteins are a coherent option to feed the planet while limiting global warming. Common proteins (wheat, soya and maize) will soon no longer be sufficient to meet the increased demand for proteins. This thesis focuses on the development of a new source of plant protein for human consumption, based on a co-product of the oil mill: hemp proteins from press-cake. To meet this objective, the three main lines of action are: the definition of extraction conditions, the study of the physico-chemical properties of the isolates extracted under the defined conditions and the study of their emulsifying properties. The data in the literature on the extraction of hemp proteins are limited and not …
Modeling small‐scale cassava starch extraction. Simulation of the reduction of water consumption through a recycling process
2010
International audience; The purpose of this study was to model the extraction unit operation of the cassava starch manufacturing process and to propose a realistic recycling simulation in order to reduce the volumes of effluents. The model was developed from reactors which are commonly used for cassava starch extraction at a household scale in Vietnam. The reactors were tested using inflow starch as a marker at the beginning of the batch process. The experimental residence time distribution (RTDexp) was calculated by the outflow of the starch concentration. Using Matlab®, the RTDexp was compared to the theoretical residence time distribution (RTDth). The dynamic model obtained was built up …
Influence of Temperature, Solvent and pH on the Selective Extraction of Phenolic Compounds from Tiger Nuts by-Products: Triple-TOF-LC-MS-MS Character…
2019
The aim of this study was to assess the effect of temperature, solvent (hydroethanolic mixtures) and pH on the recovery of individual phenolic compounds from &ldquo
Biotechnological applications of the sepiolite interactions with bacteria: Bacterial transformation and DNA extraction
2020
International audience; Among the various clay minerals, sepiolite, which is a natural nanofibrous silicate that exhibit a poor cell toxicity, is a potential promising nanocarrier for the non-viral and stable transfer of plasmid DNA into bacteria, mammalian and human cells. We first show here that sepiolite binds to bacteria, which can be useful in decontamination protocols. In a previous research we have shown that is possible to modulate the efficiency of the absorption of different types of DNA molecules onto sepiolite, and that the DNA previously adsorbed could be recovered preserving the DNA structure and biological activity. Taking advantage of both, the sepiolite/bacteria and sepioli…