Proanthocyanidin-rich Pinus radiata bark extract inhibits mast cell-mediated anaphylaxis-like reactions

2017 ◽  
Vol 32 (2) ◽  
pp. 290-297 ◽  
Author(s):  
Yun Ho Choi ◽  
Chang Ho Song ◽  
Sung Phil Mun
Keyword(s):  
Mast Cell ◽  
Pinus Radiata ◽  
Bark Extract ◽  
Pinus Radiata Bark

scholarly journals EFFECT OF THE BENCH SCALE EXTRACTION CONDITIONS ON Pinus radiata BARK EXTRACT YIELD, ANTIOXIDANT PROPERTIES AND COMPOSITION

2013 ◽  
pp. 0-0 ◽  
Author(s):  
Valentina Ramos ◽  
Carlos Bocalandro ◽  
Sebastián Riquelme ◽  
Verónica Sanhueza ◽  
Estrella Aspé ◽  
...  
Keyword(s):  
Pinus Radiata ◽  
Antioxidant Properties ◽  
Bark Extract ◽  
Bench Scale ◽  
Extract Yield ◽  
Pinus Radiata Bark

Production, composition and toxicology studies of Enzogenol® Pinus radiata bark extract

2012 ◽  
Vol 50 (12) ◽  
pp. 4316-4324 ◽  
Author(s):  
Mathias A.E. Frevel ◽  
Andrew Pipingas ◽  
Warren J. Grigsby ◽  
Chris M. Frampton ◽  
Nigel L. Gilchrist
Keyword(s):  
Pinus Radiata ◽  
Bark Extract ◽  
Pinus Radiata Bark ◽  
Production Composition

In-vitro and in-vivo Evaluation of Anti-asthmatic Activity of Eugenia jambolana bark

2021 ◽  
pp. 3337-3342
Author(s):  
Bhong Prabha N. ◽  
Naikawade Nilofar. S. ◽  
Mali Pratibha. R. ◽  
Bindu Madhavi. S.
Keyword(s):  
Mast Cell ◽  
Mast Cells ◽  
Animal Models ◽  
Aqueous Extract ◽  
Guinea Pigs ◽  
Bark Extract ◽  
Eugenia Jambolana ◽  
In Vivo Animal Models

Objectives: The present study designed to evaluate the Antiasthmatic activity of aqueous extract of bark of Eugenia Jambolana (AEEJ) on in vitro and in vivo animal models. Materials and methods: Different in vitro and in vivo animal models was used to study the anti asthmatic activity as isolated goat tracheal chain preparation, Acetylcholine and Histamine induced bronconstriction in guinea pigs, effect of drug extract on histamine release from mast cell was checked by clonidine-induced mast cell degranulation, and milk-induced eosinophilia and leukocytosis. Results: In-vitro study on goat tracheal chain preparation revealed that aqueous extract of Eugenia jambolana (AEEJ)bark exerted antagonistic effect on the histamine induced contraction. (P<0.05) The guinea pigs when exposed to 0.2% histamine aerosol showed signs of progressive dyspnoea leading to convulsions. AEEJ significantly prolonged the latent period of convulsions (PCT) as compared to control following the exposure of histamine (0.2%) aerosol (P<0.01). The observation of present study indicates aqueous extract of Eugenia jambolana shows significant inhibition of milk induced eosinophilia and leukocytosis. Group of animals pretreated with aqueous Eugenia jambolana bark extract showed significant reduction in degranulation of mast cells when challenged with clonidine. The prevention of degranulation process by the aqueous Eugenia jambolana bark extract (P<0.01) indicates a possible stabilizing effect on the mast cells, indicating mast cell stabilizing activity. Conclusions: Thus, AEEJ showed antihistaminic, mast cell stabilizing and protective in guinea pigs against histamine induced PCD, reduced eosinophilia and leukocytosis and hence possesses potential role in the treatment of asthma.

Production of a Natural Antioxidant from Pinus radiata Bark

2010 ◽  
Vol 150 ◽  
pp. 295-295
Author(s):  
Valentina Ramos ◽  
Verónica Sanhueza ◽  
Estrella Aspé ◽  
Marlene Roeckel ◽  
Katherina Fernández
Keyword(s):  
Pinus Radiata ◽  
Natural Antioxidant ◽  
Pinus Radiata Bark

Polyphenolic Extractives of Pinus radiata Bark

Holzforschung ◽  
1977 ◽  
Vol 31 (1) ◽  
pp. 20-25 ◽  
Author(s):  
Y. Yazaki ◽  
W. E. Hillis
Keyword(s):  
Pinus Radiata ◽  
Pinus Radiata Bark

Retention and plant availability of chromium in soils as affected by lime and organic matter amendments

Soil Research ◽  
2001 ◽  
Vol 39 (5) ◽  
pp. 1091 ◽  
Author(s):  
N. S. Bolan ◽  
S. Thiagarajan
Keyword(s):  
Organic Matter ◽  
Pinus Radiata ◽  
Contaminated Soils ◽  
Opposite Effect ◽  
Organic Amendment ◽  
Column Experiments ◽  
Fluidised Bed ◽  
Tannery Industry ◽  
Cr Concentration ◽  
Pinus Radiata Bark

Chromium is used as Cr(III) in the tannery industry and as Cr(VI) in the timber treatment industry. In this experiment, the effect of 2 liming materials [fluidised bed boiler ash (FBA) and lime] and an organic amendment (Pinus radiata bark) on the retention of Cr by 2 soils (Egmont and Tokomaru) was examined using both ‘batch’ and ‘column’ experiments. The effect of these amendments on the uptake of Cr from the Egmont soil, treated with various levels of Cr (0–3200 mg Cr/kg soil), was examined using sunflower (Helianthus annuus) plants. The transformation of Cr was examined by fractionation of Cr in soils. Addition of FBA and lime increased the retention of Cr(III), but had the opposite effect on the retention of Cr(VI). Addition of bark did not affect the retention of Cr(III), but it increased the retention of Cr(VI). Increasing additions of Cr increased Cr concentration in plants, resulting in decreased plant growth. The liming materials were found to be effective in reducing the phytotoxicity of Cr(III) and the Pinus radiata bark was effective for Cr(VI). In both Cr(III)- and Cr(VI)-contaminated soils, the concentrations of Cr were higher in the organic-bound, oxide-bound, and residual fractions than in the soluble and the exchangeable fractions. The concentrations of Cr in the soluble and the exchangeable fractions were higher in the Cr(VI)-contaminated than the Cr(III)-contaminated soil. Addition of the liming materials decreased the concentration of the soluble Cr(III) and bark decreased soluble Cr(VI) in soil. There was evidence for the reduction of Cr(VI) to Cr(III) in the bark-treated soils.

Sign in / Sign up

Export Citation Format

Share Document