Optimization of subcritical water hydrolysis of pecan wastes biomasses in a semi-continuous mode.
The objective of this work was to obtain reducing sugars from pecan biomasses by the optimization of the subcritical water hydrolysis technology in a semi-continuous mode and the physicochemical and morphological characterization of these materials, such as SEM, TGA and FT-IR analysis. Temperatures of 180, 220 and 260 °C, water/solids mass ratio of 15 and 30 g water/g biomass and total reaction time of 15 min were used. The highest reducing sugar yield was 27.1 g/100 g of biomass, obtained at 220 °C and R-15 for pecan shells. TGA, SEM and FT-IR analysis indicated the modifications of structures and compositions of ...
Source: Bioresource Technology - March 5, 2020 Category: Biotechnology Authors: Santos MSND, Zabot GL, Mazutti MA, Ugalde GA, Rezzadori K, Tres MV Tags: Bioresour Technol Source Type: research
Effect of pecan variety and the method of extraction on the antimicrobial activity of pecan shell extracts against different foodborne pathogens and their efficacy on food matrices
This study investigated the antimicrobial activity of pecan shell extracts as effected by the type of cultivar and the method of extraction against various foodborne bacterial pathogens. Defatted shell powders of 19 different pecan cultivars were subjected to aqueous and ethanolic extraction (1:20 w/v) procedures, respectively. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of lyophilized pecan shell extracts dissolved in deionized water containing 5% DMSO (v/v) were determined against multiple strains of Listeria monocytogenes, Salmonella enterica, and Escherichia coli O157:H7. The...
Source: Food Control - January 8, 2020 Category: Food Science Source Type: research
173TiP PECan study, imaging PD-L1 in cancer: A tool for measuring response to immunotherapy?
This study is now open to recruitment with reporting expected late 2020.Clinical trial identificationUK IRAS ID 256684.Legal entity responsible for the studyKing's College London and Guy's and St Thomas' NHS Foundation Trust.FundingDepartment of Cancer Imaging, King's College London, UK with funding from NanoMab Technology Limited, China.DisclosureG. Chand: Advisory / Consultancy, Shareholder / Stockholder / Stock options: NanoMab Technology Limited. H.H. Ting: Leadership role, Shareholder / Stockholder / Stock options, Full / Part-time employment, Officer / Board of Directors: NanoMab Technology Limited. G. Cook: Research...
Source: Annals of Oncology - December 15, 2019 Category: Cancer & Oncology Source Type: research
Exogenous Nitric Oxide and Phosphorus Stress Affect the Mycorrhization, Plant Growth, and Associated Microbes of Carya illinoinensis Seedlings Colonized by Tuber indicum
In the artificial cultivation of truffles, ectomycorrhizal colonization level, host plant quality, and the associated microbes in the rhizosphere soil are vitally important. To explore the effects of nitric oxide (NO) and phosphorus (P) stress on the early symbiosis of truffles and host plants, different concentrations of exogenous NO donor sodium nitroprusside (SNP) and P were applied to Carya illinoinensis seedlings inoculated with the Chinese black truffle (Tuber indicum). The growth of T. indicum-mycorrhized seedlings and their mycorrhizal colonization rate were investigated. Additionally, the denitrifying bacterial co...
Source: Frontiers in Microbiology - November 12, 2019 Category: Microbiology Source Type: research
The potential of the pecan nut cake as an ingredient for the food industry
Publication date: Available online 8 October 2019Source: Food Research InternationalAuthor(s): Laércio Galvão Maciel, Flávia Letícia Ribeiro, Gerson Lopes Teixeira, Luciano Molognoni, Jacson Nascimento dos Santos, Itaciara Larroza Nunes, Jane Mara BlockAbstractPecan nut [Carya illinoinensis (Wangenh.) K. Koch] cake (PNC) is a co-product from the oil extraction industry and its potential as an ingredient for the food industry are not well known. In this work, the nutritional composition and the functional properties of PNC were studied. Additionally, the influence of different solvents (ethanol, water, and acetic acid) ...
Source: Food Research International - October 19, 2019 Category: Food Science Source Type: research
Clinical and Molecular Characterization of Walnut and Pecan Allergy (NUT CRACKER Study)
ConclusionsWalnut components are helpful in diagnosing walnut allergy and in identifying patients with pecan coallergy. Competitive ELISA indicates that pecan comprises a subset of the allergenic determinants of walnut. (Source: The Journal of Allergy and Clinical Immunology: In Practice)
Source: The Journal of Allergy and Clinical Immunology: In Practice - September 26, 2019 Category: Allergy & Immunology Source Type: research
Establishment of Beauveria bassiana as a fungal endophyte in pecan (Carya illinoinensis) seedlings and its virulence against pecan insect pests
Publication date: Available online 23 September 2019Source: Biological ControlAuthor(s): Tshimangadzo Ramakuwela, Justin Hatting, Clive Bock, Fernando E. Vega, Lenny Wells, George N. Mbata, David Shapiro-IlanAbstractPecan (Carya illinoinensis) is an important crop in the USA, which produces approximately 55% of the world’s pecans. Several insect pests and various plant diseases reduce crop yield directly destroying nutmeats, or indirectly through effects on foliage and shucks, reducing photosynthesis. Beauveria bassiana is a well-studied, commercialized fungal entomopathogen that when applied inundatively is an effective...
Source: Biological Control - September 24, 2019 Category: Biology Source Type: research
Comparison of metabolic and antioxidant responses to a breakfast meal with and without pecans
ConclusionPartial substitution of butter with pecans in a breakfast meal positively affected several health measures in males.Graphical abstract (Source: Journal of Functional Foods)
Source: Journal of Functional Foods - September 11, 2019 Category: Nutrition Source Type: research
Clinical and Molecular Characterization of Walnut and Pecan Allergy
ConclusionsWalnut components are helpful in diagnosing walnut allergy and in identifying patients with pecan co-allergy. Competitive ELISA indicates that pecan comprises a subset of the allergenic determinants of walnut. (Source: The Journal of Allergy and Clinical Immunology: In Practice)
Source: The Journal of Allergy and Clinical Immunology: In Practice - September 10, 2019 Category: Allergy & Immunology Source Type: research
GSE135465 Nucleome Dynamics during Retinal Development
Contributors : Issam Aldiri ; Beisi Xu ; Michael A DyerSeries Type : OtherOrganism : Mus musculusThe nuclei of rod photoreceptors in mice and other nocturnal species have an unusual inverted chromatin structure with centrally located heterochromatin that helps to focus light and improve photosensitivity. To gain a deeper understanding of this unique nuclear organization of rod photoreceptors, we have carried out Hi-C on retina at 3 stages of development and on purified rod photoreceptors. Predicted looping interactions from the Hi-C data were validated with fluorescent in situ hybridization (FISH). We discovered that a s...
Source: GEO: Gene Expression Omnibus - September 5, 2019 Category: Genetics & Stem Cells Tags: Other Mus musculus Source Type: research
Pecan (Carya illinoinensis) detection using a monoclonal antibody-based direct sandwich enzyme-linked immunosorbent assay
In conclusion, the ELISA was sensitive and robust for pecan detection and quantification and was specific other than the low level of cross-reactivity with walnut species. (Source: LWT Food Science and Technology)
Source: LWT Food Science and Technology - August 20, 2019 Category: Food Science Source Type: research
Simultaneous extraction of oil and bioactive compounds from pecan nut using pressurized solvents
This study investigated the extraction of pecan nut oil using pressurized carbon dioxide (P-CO2) and pressurized liquefied petroleum gas (P-LPG) at different temperature and pressure conditions. The effect of the variables pressure and temperature on the extraction yield, antioxidant activity, fatty acids, and bioactive compounds (squalene and β-sitosterol) were evaluated. The highest yields were observed at 250 bar / 20 °C and 10 bar / 20 °C for the P-CO2 and P-LPG extractions, respectively. All oils presented inhibition of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical above 70%. Oleic acid was the predominant f...
Source: The Journal of Supercritical Fluids - August 20, 2019 Category: Chemistry Source Type: research
Effects of post-pyrolysis air oxidation on the chemical composition of biomass chars investigated by solid-state nuclear magnetic resonance spectroscopy
Publication date: November 2019Source: Carbon, Volume 153Author(s): Xiaoyan Cao, Feng Xiao, Pu Duan, Joseph J. Pignatello, Jingdong Mao, Klaus Schmidt-RohrAbstractSolid-state nuclear magnetic resonance (NMR) spectroscopy was used to characterize the chemical changes induced by thermal air oxidation of biomass chars. Post-pyrolysis air oxidation (PPAO) was applied to anoxically-prepared maple-wood and pecan-shell chars at PPAO temperatures ranging from 300 to 600 °C for up to 40 min. The 13C NMR data showed that PPAO treatment introduced oxygen functionalities into aromatic rings, primarily C–O and C=O, but also carb...
Source: Carbon - July 11, 2019 Category: Materials Science Source Type: research
Enzyme-assisted aqueous extraction combined with experimental designs allow the obtaining of a high-quality and yield pecan nut oil
In this study, pecan nut oil was obtained by EAE and mechanical pressing (MP), and its physicochemical properties and chemical composition were compared. The extraction conditions were selected applying the enzymes Alcalase® and/or Celluclast® used either singly or in combination. After using the Plackett-Burman design followed by a Central Composite Rotatable Design, the highest extraction yield (65.3%) was obtained using Alcalase® (1.50 g/100 g) after 4 h, in pH 8.00, at 52 °C, and substrate concentration of 0.40 g/mL. The peroxide values (1.99 and 1.90 mEq O2/kg of oil obtained by EAE and MP, respectivel...
Source: LWT Food Science and Technology - July 6, 2019 Category: Food Science Source Type: research
Adsorption of crystal violet on biomasses from pecan nutshell, para chestnut husk, araucaria bark and palm cactus: Experimental study and theoretical modeling via monolayer and double layer statistical physics models
Publication date: 15 December 2019Source: Chemical Engineering Journal, Volume 378Author(s): Xuening Pang, Lotfi Sellaoui, Dison Franco, Guilherme Luiz Dotto, Jordana Georgin, Abdullah Bajahzar, Hafedh Belmabrouk, Abdelmottaleb Ben Lamine, A. Bonilla-Petriciolet, Zichao LiAbstractBiomasses from pecan nutshell (PN), para chestnut husk (PCH), araucaria bark (AB) and palm cactus (PC) were employed to study the adsorption mechanism of a relevant textile pollutant namely crystal violet (CV). Experimental isotherm data performed at the best condition of pH showed that the temperature had no effect on the adsorption of CV on PN a...
Source: Chemical Engineering Journal - July 3, 2019 Category: Chemistry Source Type: research
