| dc.description.abstract | This research has been conducted to examine the effectivity of
Cymbopogon nardus L to eradicate lichenes on stone cultural heritages. The oil
was resulted from steam and water distillations. The method used in this research
was analyzing the physic samples, i.e. density, refractive index, and heavy metal
content of Pb, Cd, and Cr (using the atomic absorption spectrophotometry) and
the chemical component (using Gass Chromatography—Mass Spectroscopy). The
result indicated that physical characteristic of essential oil had refractive index of
1,469 and density of 0,8846 gr/mL. The analysis on Pb, Cd, and Cr heavy metals
indicated that those metal were not detected, eventhough there existed 6,093
mg/kg of Cr. The chemical component analysis indicated the existence of 20
compound components which had five main components, i.e. Citronella 47,30%,
β-citronellol 16,05%, Trans-Geraniol 12,98%, Lynalil Acetate 4,91%, and Trans-
Caryophyllene 4,70%.
The Cymbopogon nardus L was applied into some stone cultural heritages
which had concentration variations as follows: 1%, 5%, 10%, 15%, 20% and
25%. The antifungi activities which were resulted from lichens isolation process
indicated a prevention of fungi growth. Those results could be found in
diametrical zone of oil concentrations of 1%; 5%; 10%; 15% ; 20%; 25%
respectively, which were as much as 0 mm; 6 mm; 12 mm; 18 mm; 29 mm and 33
mm. The observations were then continued to lichens growth on he stone surface
using the Mass Electron Scanning. The analysis showed that higher concentration
of Cymbopogon nardus L were more effective to inhibit the growth of fungi on
Lichenes. | en_US |
