CYBERMED LIFE - ORGANIC  & NATURAL LIVING

Cybermedlife - Therapeutic Actions Biodynamic Farming

Mycelial Growth and Antimicrobial Activity of Pleurotus Species (Agaricomycetes).

Abstract Title: Mycelial Growth and Antimicrobial Activity of Pleurotus Species (Agaricomycetes). Abstract Source: Int J Med Mushrooms. 2018 ;20(2):191-200. PMID: 29773010 Abstract Author(s): Teresa A Castillo, Renata A Lemos, José Raimundo G Pereira, José Maria A Alves, Maria Francisca S Teixeira Article Affiliation: Teresa A Castillo Abstract: The objective of this study was to analyze mycelial growth under different culture conditions and antimicrobial activity of Pleurotus ostreatus (Jacq.: Fr.) Kumm. (DPUA 1533) and P. ostreatus (Jacq.: Fr.) Kumm. cv. Florida (DPUA 1534) against fungi and bacteria of medical importance. The growth of Pleurotus species was evaluated in natural and complex media, with and without light, at 25°C and 28°C for 8, 15, and 30 days. Candida albicans (DPUA 1336), Cryptococcus laurentii (DPUA 1501), Aspergillus flavus (DPUA 1836), Escherichia coli (DAUPE 224), and Mycobacterium smegmatis (ATCC 607) were used to test antibiosis. Under all growth conditions in vitro, Pleurotus species evidencedgrowth and high density of mycelia on potato dextrose agar and Sabouraud agar with yeast extract; mycelial growth but lesser mycelial density was observed on rice bran extract agar. Organic mycelial extracts of Pleurotus species exhibited potential antibacterial and antifungal activity, and were selective for the tested microorganisms. Article Published Date : Dec 31, 2017

Molecular properties of a fermented manure preparation used as field spray in biodynamic agriculture.

Abstract Title: Molecular properties of a fermented manure preparation used as field spray in biodynamic agriculture. Abstract Source: Environ Sci Pollut Res Int. 2012 Nov ;19(9):4214-25. Epub 2012 Jun 17. PMID: 22707205 Abstract Author(s): R Spaccini, P Mazzei, A Squartini, M Giannattasio, A Piccolo Article Affiliation: Dipartimento di Scienze del Suolo, della Pianta, dell'Ambiente e delle Produzioni Animali (DiSSPAPA), Università di Napoli Federico II, Via Università 100, 80055, Portici, Italy. This email address is being protected from spambots. You need JavaScript enabled to view it. Abstract: Manure products fermented underground in cow horns and commonly used as field spray (preparation 500) in the biodynamic farming system, were characterized for molecular composition by solid-state nuclear magnetic resonance [(13) C cross-polarization magic-angle-spinning NMR ((13) C-CPMAS-NMR)] spectroscopy and offline tetramethylammonium hydroxide thermochemolysis gas chromatography-mass spectrometry. Both thermochemolysis and NMR spectroscopy revealed a complex molecular structure, with lignin aromatic derivatives, polysaccharides, and alkyl compounds as the predominant components. CPMAS-NMR spectra of biodynamic preparations showed a carbon distribution with an overall low hydrophobic character and significant contribution of lignocellulosic derivatives. The results of thermochemolysis confirmed the characteristic highlighted by NMR spectroscopy, revealing a molecular composition based on alkyl components of plant and microbial origin and the stable incorporation of lignin derivatives. The presence of biolabile components and of undecomposed lignin compounds in the preparation 500 should be accounted to its particularly slow maturation process, as compared to common composting procedures. Our results provide, for the first time, a scientific characterization of an essential product in biodynamic agriculture, and show that biodynamic products appear to be enriched of biolabile components and, therefore, potentially conducive to plant growth stimulation. Article Published Date : Oct 31, 2012

We use cookies on our website. Some of them are essential for the operation of the site, while others help us to improve this site and the user experience (tracking cookies). You can decide for yourself whether you want to allow cookies or not. Please note that if you reject them, you may not be able to use all the functionalities of the site.