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Chemical composition and inhibitory effects of Vectandra grandiflora leaves essential oil against wood decay fungi

100%

Silva D. T. , Bianchini N. H. , Muniz M. F. B. , Heinzmann B. M. , Labidi J.

Drewno : prace naukowe, doniesienia, komunikaty

2016

tom vol. 59, nr 197

189--198

The environmental toxicity and potential human health problems that can be caused by most common wood preservatives are pushing forward the search of safe preservatives from renewable resources. Consequently, several studies have been realized to assess the potential of plant extracts in terms of fungal resistance for wood products. In this context, the present work aims to evaluate the inhibitory effects of essential oil obtained from the leaves of Nectandra grandiflora against wood decay fungi. Chemical characterization was carried out by gas chromatography and the antifungal activity was performed by the radial growth technique. Firstly, the potato sucrose agar medium was supplemented with essential oil at concentrations ranging from 0 (control) to 5.0 μL·mL-1. Afterwards, mycelial discs of Pycnoporus sanguineus and Gloeophyllum trabeum were transferred to the plates and the results were evaluated by the probit method. Chemical analysis revealed a complex mixture of sesquiterpenoids in the essential oil, which presented dehydrofukinone as a major compound. The essential oil and dehydrofukinone proved to be effective in the mycelial growth control of G. trabeum and P. sanguineus. These preliminary reports demonstrated the suitability of the N. grandiflora essential oil as a component of preservative solutions.

Plant long-chain polyprenols as chemotaxonomic markers

75%

Roslinska M. , Walinska K. , Swiezewska E. , Chojnacki T.

2002

tom 47

The occurrence of long-chain polyprenols in leaves of plants of Lauraceae, Tiliaceae and Magnoliaceae families was studied. Separation of groups of polyprenols differing in the size of molecules was performed by thin-layer chromatography. In all studied species long-chain polyprenols were detected. The total polyprenol content in leaves reached values as high as 3% of their dry weight. In the studied species belonging to Lauraceae family a fraction of polyprenols composed of 10-14 isoprene units was present. In species of Tiliaceae and Magnoliaceae polyprenols composed of 9-12 and 10-12 isoprene units were present, respectively. Differences in polyprenol profile characteristic for each family studied were observed. These results were confirmed by HPLC. The structure of these polyprenols was examined by NMR spectrometry and in representative species studied polyprenols exibited the typical poly-cis structure. The effect of insolation on the rate of accumulation of polyprenols was documented.

Poznajemy przyprawy

63%

Mystkowska Z.

nr 02

Poznajemy przyprawy. Cynamon

63%

Mystkowska Z.

Wiadomości Rolnicze. Ośrodek Doradztwa Rolniczego w Szepietowie

1993

nr 05

Floristical observations from the Heishiding region in the South China Mts. [ Guangdong prov. - People's Republic of China ]

63%

Weglarski K.

Fragmenta Floristica et Geobotanica

1996

tom 41

nr 1

Wawrzyn szlachetny

51%

Grochowski B.

Wiadomości Zielarskie

1995

tom 37

nr 07-08

Roslinne substancje biologicznie czynne,wazne dla zdrowia i urody.Cz.II.Olejki eteryczne

38%

Lamer-Zarawska E. , Olechnowicz-Stepien W.

tom 34

nr 04

19-20

Szlachetny laur

38%

Gawrys W.

Kwietnik

2003

nr 02

16-19

Awokado

32%

Kardasz P.

Kwietnik

1995

nr 01

14-15

Kolekcje dendrologiczne Arboretum SGGW w Rogowie - wyniki wieloletniej uprawy wybranych gatunkow. Cz.2. Lisciaste [Aceraceae - Lauraceae]

26%

Tumilowicz J.

2004

tom 52

4-34