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https://www.readbyqxmd.com/read/27910755/comparison-of-the-composition-and-antioxidant-activities-of-phenolics-from-the-fruiting-bodies-of-cultivated-asian-culinary-medicinal-mushrooms
#1
Shaoling Lin, Lai Tsz Ching, Xinxin Ke, Peter Chi Keung Cheung
The composition profile and the antioxidant properties of phenolics in water extracts obtained from the fresh fruiting bodies of 4 common cultivated Asian edible mushrooms-Agrocybe aegerita, Pleurotus ostreatus, P. eryngii, and Pholiota nameko were compared. The water extract from A. aegerita (AaE) had the highest total phenolic content (TPC) at 54.18 ± 0.27 gallic acid equivalents (μmol/L)/mg extract (P < 0.05), as measured by the Folin-Ciocalteu method, and consisted of the largest number (including gallic acid, protocatechuic acid, chlorogenic acid, ferulic acid, and sinapic acid) and total amounts of phenolic acids identified by Fourier transform-ion cyclotron resonance mass spectrometry...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/27904414/near-infrared-spectroscopic-analysis-of-total-phenolic-content-and-antioxidant-activity-of-berry-fruits
#2
Jasenka Gajdoš Kljusurić, Kiril Mihalev, Ivana Bečić, Ivana Polović, Mariya Georgieva, Senka Djaković, Želimir Kurtanjek
This study evaluates the feasibility of using near-infrared (NIR) spectroscopy as a rapid and environmentally friendly technique for validation and prediction of the total phenolic content (TPC) and antioxidant activity (AOA) indices (as 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, inhibition time (IT) of the Briggs-Rauscher oscillating reaction, and relative antioxidant capacity (RAC)) of berry fruit extracts. The analysed berry samples originated from Croatia (blackberries, wild blueberries, raspberries, red currants and strawberries) and Bulgaria (wild blueberries, raspberries and strawberries)...
June 2016: Food Technology and Biotechnology
https://www.readbyqxmd.com/read/27897349/bulky-ytterbium-formamidinates-stabilise-complexes-with-radical-ligands-and-related-samarium-tetracyclone-chemistry
#3
Peter Courtney Junk, Daniel Werner, Xuefei Zhao, Stephen Best, Laurent Maron, Glen Deacon
Divalent [Yb(DippForm)2(thf)n] (n = 2 (1a), or 1 (1b); DippForm = N,N'-bis(2,6-diisopropylphenyl)formamidinate) complexes were treated with the ketones: 9-fluorenone (fn), or 2,3,4,5-tetraphenylcyclopentadienone (tpc, tetracyclone), giving ketyl† complexes: [Yb(DippForm)2(fn˙-O)(thf)] (2), and [Yb(DippForm)2(tpc˙-O)] (3) respectively. By contrast, when perfluorobenzophenone (pfb) was treated with either 1a or 1b, transitory ketyl formation was followed by rapid decomposition via a C-F activation pathway, giving [YbF(DippForm)2(thf)] (4a) and a highly unusual fluoride/oxide bridged species: [Yb5F6O2(DippForm)5] (4b)...
November 29, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27867274/pharmacognostical-analysis-and-protective-effect-of-standardized-extract-and-rizonic-acid-from-erythrina-velutina-against-6-hydroxydopamine-induced-neurotoxicity-in-sh-sy5y-cells
#4
Aline H Silva, Francisco Noé Fonseca, Antônia T A Pimenta, MaryAnne S Lima, Edilberto Rocha Silveira, Glauce S B Viana, Silvânia M M Vasconcelos, Luzia Kalyne A M Leal
BACKGROUND: Erythrina velutina is a tree common in the northeast of Brazil extensively used by traditional medicine for the treatment of central nervous system disorders. OBJECTIVE: To develop a standardized ethanol extract of E. velutina (EEEV) and to investigate the neuroprotective potential of the extract and rizonic acid (RA) from E. velutina on neuronal cells. MATERIALS AND METHODS: The plant drug of E. velutina previously characterized was used for the production of EEEV...
October 2016: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/27860257/efficacy-of-vitamin-d-replacement-therapy-on-patients-with-chronic-nonspecific-widespread-musculoskeletal-pain-with-vitamin-d-deficiency
#5
Ramazan Yilmaz, Ali Salli, Havva Turac Cingoz, Sami Kucuksen, Hatice Ugurlu
AIM: The objective of this study is the evaluation of the effect of vitamin D replacement treatment on musculoskeletal symptoms and quality of life in patients with chronic widespread musculoskeletal pain (CWP) including fibromyalgia (FM) and vitamin D deficiency. METHOD: Patients with nonspecific CWP and vitamin D deficiency (25-OH D3 < 25 ng/mL) were included into the study. Replacement treatments of 50 000 IU/week oral vitamin D3 for 3 months were given to the patients...
November 11, 2016: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/27859484/gram-microorganisms-dna-polymerase-inhibition-antibacterial-and-chemical-properties-of-fruit-and-leaf-extracts-of-sorbus-acuparia-and-sorbus-caucasica-var-yaltirikii
#6
Halbay Turumtay, Ahmet Midilli, Emine Akyuz Turumtay, Adem Demir, Emine Kılıçkaya Selvi, Emine Esra Budak, Havva Er, Fatih Kocaimamoglu, Hüseyin Baykal, Ali Osman Belduz, Vagif Atamov, Cemal Sandallı
Investigation of novel plant-based agents might provide alternative antibiotics and thus fight antibiotic resistance. Here, we measured the ability of fruit and leaf extracts of Sorbus aucuparia (Sauc) and endemic Sorbus caucasica var. yaltirikii (Scau) to inhibit non-replicative (Klenow Fragment-KF and Bacillus Large Fragment-BLF) and replicative (DnaE and PolC) bacterial DNA polymerases along with their antimicrobial, DPPH free radical scavenging activity (RSA), and chemical contents by total phenolic content (TPC) and HPLC-DAD analysis...
November 17, 2016: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/27859376/microwave-drying-of-germinated-corn-and-its-effect-on-phytochemical-properties
#7
Oraporn Bualuang, Onwude Daniel Iroemeha, Kwanta Pracha
BACKGROUND: Drying is a preservation method that removes or reduces the moisture content of a product. This process could affect the nutritional properties of agricultural crops. Therefore, this research seeks to investigate the effect of microwave drying power (100-700 W) on drying rate, effective diffusivity, antioxidant value of beta-carotene content (BCC), total flavonoid content (TFC), total phenolic content (TPC), and the antioxidant capacity of sprouted corn, which can be applied as a rich antioxidant source...
November 17, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27857542/effect-of-thyme-and-rosemary-on-the-quality-characteristics-shelf-life-and-residual-nitrite-content-of-sausages-during-cold-storage
#8
Sang Keun Jin, Jung Seok Choi, Seung Jae Lee, Seung Yun Lee, Sun Jin Hur
The effects of thyme and rosemary on the quality characteristics of sausages during cold storage were investigated. Sausages were prepared with thyme and rosemary powder (1 and 2%) and stored for 6 weeks at 10℃. The pH was significantly decreased in sausages by addition of thyme and rosemary compared to that observed in the control before and after storage. At 4 weeks of storage, the residual nitrite content was decreased by thyme and rosemary compared to the control. Lightness (L*) and yellowness (b*) were increased during storage, whereas redness (a*) and whiteness (W) were decreased before and after storage by addition of thyme and rosemary...
October 31, 2016: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/27854196/determination-of-flavonoids-polyphenols-and-antioxidant-activity-of-tephrosia-purpurea-a-seasonal-study
#9
Madan Mohan Pandey, Sayyada Khatoon, Subha Rastogi, Ajay Kumar Singh Rawat
OBJECTIVE: Tephrosia purpurea (Linn·) Pers. is widely used in traditional medicine to treat liver disorders, febrile attacks, enlargement and obstruction of liver, spleen, and kidney. In the present study, investigations were carried out to determine the seasonal impact on the content of flavonoid glycosides and on antioxidant activities so as to identify the optimal time of harvesting. METHODS: The plant materials were collected in different seasons during 2013-2014...
November 2016: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/27845756/the-use-of-grape-seed-byproducts-rich-in-flavonoids-to-improve-the-antioxidant-potential-of-red-wines
#10
María José Jara-Palacios, Dolores Hernanz, María Luisa Escudero-Gilete, Francisco J Heredia
The influence of adding seeds from grape pomace during Syrah wine fermentation in a warm climate has been studied. Seeds of Pedro Ximenez variety were rich in phenolic compounds, mainly flavonoids such as catechin and procyanidins. Changes in total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity of red wines were observed. These changes depended on the vinification stage and the amount of seeds (SW: 450 g or DW: 900 g seeds/150 kg grapes) applied. In general, antioxidant activity was greater when a simple dose (SW) was considered...
November 12, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27843534/phytochemical-content-and-pharma-nutrition-study-on-eleutherococcus-senticosus-fruits-intractum
#11
Daniel Załuski, Marta Olech, Agnieszka Galanty, Robert Verpoorte, Rafał Kuźniewski, Renata Nowak, Anna Bogucka-Kocka
In the past two decades public interest in herbal products has increased significantly in Europe, especially in the plant-based products from non-European traditions. Eleutherococcus senticosus has been used for the treatment of inflammatory diseases, anemia, and rheumatoid arthritis. The Eleutherococcus senticosus fruits intractum was examined for the content of phenolic acids (LC-ESI-MS/MS), minerals (AAS), TPC, and TFC (spectrophotometric assay). The antioxidant activity was determined using free radical scavenging assay and TLC-DB-DPPH(∗) dot-blot test...
2016: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/27822982/the-effect-of-firefighter-protective-garments-self-contained-breathing-apparatus-and-exertion-in-the-heat-on-postural-sway
#12
Scott C White, David Hostler
Fire suppression wearing thermal protective clothing (TPC) and self-contained breathing apparatus (SCBA) challenges a firefighter's balance and may explain firefighter falls. Postural control based on force plate center of pressure (COP) was compared for healthy subjects wearing TPC and SCBA before and after 20 minutes of heavy physical exertion in hot conditions. Baseline measures with and without TPC and SCBA (two different SCBA cylinder masses) were compared before and after exertion that included elements of fire suppression activities in an environmental chamber...
November 8, 2016: Ergonomics
https://www.readbyqxmd.com/read/27819135/high-performance-size-exclusion-chromatography-studies-on-the-formation-and-distribution-of-polar-compounds-in-camellia-seed-oil-during-heating
#13
Hong-Xia Feng, Rokayya Sam, Lian-Zhou Jiang, Yang Li, Wen-Ming Cao
Camellia seed oil (CSO) is rich in oleic acid and has a high number of active components, which give the oil high nutritional value and a variety of biological activity. The aim of the present study was to determine the changes in the content and distribution of total polar compounds (TPC) in CSO during heating. TPC were isolated by means of preparative flash chromatography and further analyzed by high-performance size-exclusion chromatography (HPSEC). The TPC content of CSO increased from 4.74% to 25.29%, showing a significantly lower formation rate as compared to that of extra virgin olive oil (EVOO) and soybean oil (SBO) during heating...
2016: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/27809468/synthesis-and-characterization-of-hydrazide-linked-and-amide-linked-organic-polymers
#14
Zhongshan Liu, Junjie Ou, Hongwei Wang, Xin You, Mingliang Ye
Four kinds of either hydrazide-linked or amide-linked polymers were facilely synthesized by using hydrazine, tetrakis(4-aminophenyl)methane (TAPM), terephthaloyl chloride (TPC) and trimesoyl chloride (TMC) as building blocks. The morphology, porosity, composition and surface property of polymers were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption-desorption measurements, 13C/CP-MAS NMR, X-ray photoelectron spectroscopy (XPS), etc. The results indicated that building blocks had important effects on morphology and porosity...
November 3, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27807377/fixed-dose-rate-administration-of-gemcitabine-in-cancer-bearing-cats-a-pilot-study
#15
Crystal L Garnett, Teri A Guerrero, Carlos O Rodriguez
Gemcitabine is an antimetabolite chemotherapy agent with schedule-dependent metabolism and efficacy. The purpose of this study was to identify the fixed-dose-rate (FDR) of gemcitabine administration in cancer-bearing cats that achieved a target plasma concentration (TPC) of 10 to 20 μM. Fifteen client-owned cats received gemcitabine infusions administered at various FDR for 1 to 6 hours. Plasma gemcitabine and dFdU (2',2'-difluorodeoxyuridine), the major gemcitabine metabolite, were quantitated by high performance liquid chromatography...
November 2016: Canadian Veterinary Journal. la Revue Vétérinaire Canadienne
https://www.readbyqxmd.com/read/27777455/effect-of-microwave-drying-and-oven-drying-on-the-water-activity-color-phenolic-compounds-content-and-antioxidant-activity-of-coconut-husk-cocos-nucifera-l
#16
Lourdes Valadez-Carmona, Rosa María Cortez-García, Carla Patricia Plazola-Jacinto, Hugo Necoechea-Mondragón, Alicia Ortiz-Moreno
The coconut (Cocos nucifera L.) husk is basically composed by fiber and pith material and remained under-utilized. This is an important source of phenolic compounds that could be used as functional ingredients. The aim of this study was to determine the effect of: oven-drying (OD) and microwave drying (MD), on the water activity, color, phenolic compound content and antioxidant activity of coconut husk. The OD was performed at 60 °C for 12 h and MD was performed at 900 W for 10 min. The total phenolic content (TPC) in fresh coconut husk was 64...
September 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27771410/use-of-plantago-major-seed-mucilage-as-a-novel-edible-coating-incorporated-with-anethum-graveolens-essential-oil-on-shelf-life-extension-of-beef-in-refrigerated-storage
#17
Behrooz Alizadeh Behbahani, Fakhri Shahidi, Farideh Tabatabaei Yazdi, Seyed Ali Mortazavi, Mohebbat Mohebbi
In this study, Plantago major seed mucilage (PMSM) was extracted from whole seeds using hot-water extraction (HWE). The dill (D) essential oil components were identified through gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) and its antioxidant properties were examined through the methods of 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant potential (FRAP) and ß-carotene-linoleic acid assay (B-CL). Total phenolic content (TPC) was characterized through the Folin-Ciocalteu method and the antimicrobial effect was evaluated on 10 pathogenic microorganisms...
October 19, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27765980/assessment-of-total-polyphenols-antioxidants-and-antimicrobial-properties-of-aonla-varieties
#18
Parveen Kumari, B S Khatkar
Phenolic content, antioxidant activities and antimicrobial activities of methanolic, ethanolic and ethyl acetate extracts of five different varieties of aonla (Emblica officinalis) fruits as well their powders were evaluated. Total polyphenolic content in fresh aonla fruit extracts varied from 70.6 to 159.4 mg GAE/g and their EC 50 (effective concentration) values for antioxidant activity ranged from 46.72 to 359.7 µg/ml. Significant varietal difference were observed in antioxidant activity of the extracts of fresh aonla fruit and powder...
July 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27765974/the-effect-of-ultraviolet-treatment-on-enzymatic-activity-and-total-phenolic-content-of-minimally-processed-potato-slices
#19
Li Shing Teoh, Ola Lasekan, Noranizan Mohd Adzahan, Norhashila Hashim
In this work, potato slices were exposed to different doses of UV-C irradiation (i.e. 2.28, 6.84, 11.41, and 13.68 kJ m(-2)) with or without pretreatment [i.e. ascorbic acid and calcium chloride (AACCl) dip] and stored at 4 ± 1 °C. Changes in enzymatic activities of polyphenol oxidase (PPO), peroxidase (POD) and phenylalanine ammonia lyase (PAL), as well as total phenolic content (TPC) were investigated after 0, 3, 7 and 10 days of storage. Results showed that untreated and UV-C treated potato slices at 13...
July 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27757263/in-vitro-xanthine-oxidase-and-albumin-denaturation-inhibition-assay-of-barringtonia-racemosa-l-and-total-phenolic-content-analysis-for-potential-anti-inflammatory-use-in-gouty-arthritis
#20
Nurul Izzati Osman, Norrizah Jaafar Sidik, Asmah Awal, Nurul Athirah Mohamad Adam, Nur Inani Rezali
AIM: This study was conducted to evaluate the in vitro anti-inflammatory activities and total phenolic content (TPC) of methanolic extracts of infloresence axes, endosperms, leaves, and pericarps of Barringtonia racemosa L. METHODS: The anti-inflammatory study was conducted by assessing the potential through xanthine oxidase (XO) and albumin denaturation inhibition assays. Meanwhile, the TPC in the extracts were assessed by Folin-Ciocalteu assay. RESULTS: In the XO inhibition assay, the infloresence axes extract was found to exert the highest inhibition capacity at 0...
September 2016: Journal of Intercultural Ethnopharmacology
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