Kinetic modelling of vitamin C losses in fresh citrus juices under different storage conditions.
Abstract
The degradation kinetics of vitamin C in different citrus juice types (tangerine, grapefruit, orange and lime) were investigated during four hours storage at temperatures of 4 and 25°C under different storage conditions in terms of light and oxygen presence. The loss of vitamin C at each sample followed the first-order kinetic model. During storage, predicted half-life of vitamin C ranged from 137.586 to 467.486 min for tangerine; 105.444 to 203.100 min for grapefruit; 365.702 to 1044.668 min for orange and 540.076 to 722.016 min for lime juices. These results indicated that the highest and lowes...
Source: An Acad Bras Cienc - June 21, 2020 Category: Science Authors: NakilcioĞlu-TaŞ E, ÖtleŞ S Tags: An Acad Bras Cienc Source Type: research
Effect of pilot-scale UV-C light treatment assisted by mild heat on E. coli, L. plantarum and S. cerevisiae inactivation in clear and turbid fruit juices. Storage study of surviving populations.
Abstract
Consumer growing demands for high-quality and safe food and beverages have stimulated the interest in alternative preservation technologies. Short-wavelength ultraviolet light (UV-C, 254Â nm) has proven to be useful for the decontamination of a great variety of clear juices while improving their quality compared to traditional thermal treatments. Suspended solids and coloured compounds in turbid juices, diminish light transmission. The use of UV-C under a hurdle approach, may be a promising strategy for their treatment. The purpose of this study was to analyse Escherichia coli ATCC 25922, Saccharo...
Source: International Journal of Food Microbiology - June 19, 2020 Category: Food Science Authors: Fenoglio D, Ferrario M, Schenk M, Guerrero S Tags: Int J Food Microbiol Source Type: research
Enhanced performance of the tangerines-like CuO-based gas sensor using ZnO nanowire arrays
Publication date: 1 November 2020Source: Materials Science in Semiconductor Processing, Volume 118Author(s): Lina Cai, Hairong Li, Huan Zhang, Wenhao Fan, Jianan Wang, Yongchang Wang, Xudong Wang, Ying Tang, Yuzhe Song (Source: Materials Science in Semiconductor Processing)
Source: Materials Science in Semiconductor Processing - May 25, 2020 Category: Materials Science Source Type: research
Molecules, Vol. 25, Pages 2339: Porous Activated Carbon from Lignocellulosic Agricultural Waste for the Removal of Acetampirid Pesticide from Aqueous Solutions
. Kamel
A facile eco-friendly approach for acetampirid pesticide removal is presented. The method is based on the use of micro- and mesoporous activated carbon (TPAC) as a natural adsorbent. TPAC was synthesized via chemical treatment of tangerine peels with phosphoric acid. The prepared activated carbon was characterized before and after the adsorption process using Fourier- transform infrared (FTIR), X-ray diffraction (XRD), particle size and surface area. The effects of various parameters on the adsorption of acetampirid including adsorbent dose (0.02–0.2 g), pH 2–8, initial adsorbate con...
Source: Molecules - May 16, 2020 Category: Chemistry Authors: Somaia G. Mohammad Sahar M. Ahmed Abd El-Galil E. Amr Ayman H. Kamel Tags: Article Source Type: research
The siderophore repressor SreA maintains growth, hydrogen peroxide resistance, and cell wall integrity in the phytopathogenic fungus Alternaria alternata.
Abstract
The siderophore-mediated iron uptake machinery is required by the tangerine pathotype of Alternaria alternata to colonize host plants. The present study reports the functions of the GATA-type transcription regulator SreA by analyzing loss- and gain-of-function mutants. The expression of sreA is transiently upregulated by excess iron. The sreA deficient mutant (ΔsreA) shows severe growth defect but produces ACT toxin and incites necrotic lesions on citrus leaves as efficiently as wild type. SreA suppresses the expression of genes encoding polypeptides required for siderophore biosynthesis and tran...
Source: Fungal Genetics and Biology - April 8, 2020 Category: Biology Authors: Chung KR, Wu PC, Chen YK, Yago JI Tags: Fungal Genet Biol Source Type: research
Mixed polysaccharides derived from Shiitake mushroom, Poriacocos, Ginger, and Tangerine peel enhanced protective immune responses in mice induced by inactivated influenza vaccine
Publication date: June 2020Source: Biomedicine & Pharmacotherapy, Volume 126Author(s): Hongmei Zhu, Minghua Hu, Dehai Wang, Guowei Xu, Xiquan Yin, Xin Liu, Mingxing Ding, Li Han (Source: Biomedicine and Pharmacotherapy)
Source: Biomedicine and Pharmacotherapy - March 13, 2020 Category: Drugs & Pharmacology Source Type: research
Coding the α-subunit of SNF1 kinase, Snf1 is required for the conidiogenesis and pathogenicity of the Alternaria alternata tangerine pathotype
Publication date: Available online 29 February 2020Source: Fungal BiologyAuthor(s): Kezhi Tang, Weiwei Lv, Qian Zhang, Changyong Zhou (Source: Fungal Biology)
Source: Fungal Biology - March 1, 2020 Category: Biology Source Type: research
The chemistry and biological activities of Citrus clementina Hort. Ex Tanaka (Rutaceae), a vegetatively propagated species.
We report the chemistry and biological activities of a Cameroonian Citrus clementina Hort. Ex Tanaka, a vegetatively propagated species. The compounds isolated from this plant were determined to be the known 5-hydroxy-6,7,8,3',4'-pentamethoxyflavone (1), tangerine (3), nobilletin (4), 5,7,8,4'-tetramethoxyflavone (5), citracridone I (6), 5-hydroxynoracronycine (7), citracridone III (8), xanthyletin (10), suberosin (9), E-suberenol (11), E-methoxysuberenol (13), 6-formylumbelliferone (12), aurantiamide acetate (2), limonin (14), stigmasterol, β-sitosterol and β-sitosterol-3-O-β-D-glucoside. The structures of the compound...
Source: Natural Product Research - February 23, 2020 Category: Biochemistry Authors: Bissim SM, Kenmogne SB, Lobe JS, Atangana AF, Bissoue AN, Langat MK, Isyaka SM, Lateef M, Emmanuel NH, Wansi JD, Ali MS, Waffo AFK Tags: Nat Prod Res Source Type: research
Hesperetin reverses P ‑glycoprotein‑mediated cisplatin resistance in DDP‑resistant human lung cancer cells via modulation of the nuclear factor‑κB signaling pathway.
Hesperetin reverses P‑glycoprotein‑mediated cisplatin resistance in DDP‑resistant human lung cancer cells via modulation of the nuclear factor‑κB signaling pathway.
Int J Mol Med. 2020 Feb 05;:
Authors: Kong W, Ling X, Chen Y, Wu X, Zhao Z, Wang W, Wang S, Lai G, Yu Z
Abstract
Lung cancer is the leading cause of cancer‑associated mortality worldwide. Cisplatin (DDP) is a first‑line chemotherapeutic drug for the treatment of lung cancer; however, the majority of patients develop resistance to DDP. P‑glycoprotein (P‑gp), also referred to as multidrug resistance (MDR...
Source: International Journal of Molecular Medicine - February 4, 2020 Category: Molecular Biology Authors: Kong W, Ling X, Chen Y, Wu X, Zhao Z, Wang W, Wang S, Lai G, Yu Z Tags: Int J Mol Med Source Type: research
Identification and quantification of limonoid aglycones content of Citrus seeds
ABSTRACT Citrus fruits are recognized as an important source of bioactive molecules such as limonin and nomilin. However, these molecules exhibit low bioavailability, therefore, obtaining these molecules using biotechnological techniques may be an alternative to harvesting them directly from fruits. The aim of this study was to quantify and identify limonoids in the dichloromethane extracts of Citrus seeds of Criolla orange, Oneco tangerine, Tangerine-lemon, Sour orange and Valencia orange from department of Antioquia-Colombia by high performance liquid chromatography with diode array detection, and high-resolution mass sp...
Source: Revista Brasileira de Farmacognosia - February 3, 2020 Category: Drugs & Pharmacology Source Type: research
Green synthesis of Citrus reticulata peels extract silver nanoparticles and characterization of structural, biocide and anticorrosion properties
Publication date: Available online 29 January 2020Source: Journal of Molecular StructureAuthor(s): Ekemini Ituen, Ekere Ekemini, Lin Yuanhua, Ambrish SinghAbstractTangerine peels extract mediated silver nanoparticles (TPE-AgNPs) were synthesized by bio-reduction of silver ions using tangerine (Citrus reticulata) peels extract and characterized using by UV–Vis, XRD, TEM, EDAX, DLS and FTIR. The obtained particles were crystalline, round-shaped, monodisperse and stable. TPE-AgNPs exhibit face centre cubic (fcc) structure in Ag0 (111) phase/orientation with dimension a = b = c = 4.0968 A∘ and α =  β =â...
Source: Journal of Molecular Structure - January 30, 2020 Category: Molecular Biology Source Type: research
Cell-Wall-Degrading Enzymes Required for Virulence in the Host Selective Toxin-Producing Necrotroph Alternaria alternata of Citrus
The necrotrophic fungal pathogen Alternaria alternata attacks many citrus species, causing brown spot disease. Its pathogenic capability depends primarily on the production of host-selective ACT toxin. In the current study a Ste12 transcription factor was characterized to be required for conidial formation and the production of cell-wall-degrading enzymes (CWDEs) in the tangerine pathotype of A. alternata. The Ste12 deficiency strain (ΔSte12) retained wild-type growth, ACT toxin production, and sensitivity to oxidative and osmotic stress. However, pathogenicity tests assayed on detached Dancy leaves revealed a marked redu...
Source: Frontiers in Microbiology - November 21, 2019 Category: Microbiology Source Type: research
Hybrid hydrogels containing one-step biosynthesized silver nanoparticles: Preparation, characterization and catalytic application
Publication date: 25 November 2019Source: Journal of Industrial and Engineering Chemistry, Volume 79Author(s): Rafael F.N. Quadrado, Gustavo Gohlke, Robson S. Oliboni, Alessandra Smaniotto, André R. FajardoAbstractSilver nanoparticles (AgNPs) were synthesized using an innovative strategy that makes use of tangerine peels extract, which acts as a reducing and stabilizing agent. This eco-friendly synthetic route allowed obtaining spherical nanoparticles with narrow size distribution (19.2 ± 6.7 nm) within a short reaction time (40 min). Later, the AgNPs suspension was entrapped in a poly(vinyl alcohol) ...
Source: Journal of Industrial and Engineering Chemistry - September 16, 2019 Category: Chemistry Source Type: research
The occurrence of food hypersensitivity reactions and the relation to the sensitization to grass and trees in atopic dermatitis patients 14 years of age and older
Conclusion: The significant relation was found between the reactions to peanuts and walnuts and sensitization to grass and trees, another significant relation was found between the sensitization to grass and celery and between the sensitization to trees and apple. (Source: Indian Journal of Dermatology)
Source: Indian Journal of Dermatology - September 4, 2019 Category: Dermatology Authors: Jarmila Celakovsk & #225; Josef Bukac Karel Ettler Jaroslava Vaneckova Irena Krcmova Kvetuse Ettlerova Jan Krejsek Source Type: research
The imperfective paradox in a second language: A dynamic completion-entailment test
Publication date: Available online 4 September 2019Source: LinguaAuthor(s): Stefano RastelliAbstractThe imperfective paradox (IP) refers to the fact that the imperfective-progressive yields completion entailment with atelic predicates (e.g., Livia was pushing the chair → Livia pushed the chair = true) but not with telic predicates (Livia was peeling the tangerine → Livia peeled the tangerine = not necessarily true). The paper questions whether L2 learners too – like adult native speakers – are sensitive to the IP. Ninety-nine adult L2 Italian learners with different L1s and proficiency levels un...
Source: Lingua - September 4, 2019 Category: Speech-Language Pathology Source Type: research
