Józef Góra

Chemical Composition of the Essential Oil of Cultivated Summer Savory (Satureja hortensis L. cv. Saturn)

ABSTRACT The essential oil of cultivated summer savory (Satureja hortensis L. cv. Saturn) was analyzed by GC and GC/MS. More than twenty-five components were identified with the major ones being γ-terpinene (40.9%) and carvacrol (39.3%).

Essential Oils of Bidens tripartita L.

Abstract Essential oils were obtained from fresh aerial parts and air dried flower heads of Bidens tripartita L. (As-teraceae). Volatile constituents of the oils were analyzed by GC and GC/MS methods. The 77 components were identified representing 98.5% and 80.9% of the total components detected, respectively. The major constituents of the oil of flower heads were p-cymene (16.6%), β-caryophyllene oxide (6.0%) and humulene epoxide II (5.3%). The main constituents of the oil of fresh herb were allo-ocimene (38.3%), (Z)- β-ocimene (30.6%) and α-phellandrene (8.5%).

Essential Oil of Conyza canadensis (L.) Cronq.

Abstract The essential oil of Conyza canadensis was investigated by GC, GC/MS and 1H-NMR spectroscopy. More than 50 components were identified. The main constituents were limonene (70.0%) and trans-α-bergamotene (7.0/%).

Essential Oil of Amorpha fruticosa L.

Abstract The essential oils from the flowers, leaves and fruits of Amorpha fruticosa L. were investigated by GC, GC/MS and 1H-,13C-NMR spectroscopy. About 70 constituents were identified in each oil. The major components of the flower oil were α-eudesmol (15.8%), β-eudesmol (7.8%), δ-cadinene (6.2%) and (E)-nerolidol (6.1%). The leaf oil contained mainly α-eudesmol (13.9%), (E)-β-ocimene (11.9%), and α-pinene (11.8%). In the ripe fruit oil α-pinene (19.3-19.6%), myrcene (17.7-18.7%) and δ-cadinene (6.2-6.9%) dominated.

Chemical Composition of the Essential Oil of Rosa centifolia L. Petals

ABSTRACT The essential oil of Rosa centifolia L. cultivated in Poland has been analyzed by GC and GC/MS. Thirty-one components have been identified, of which the major ones were geraniol (26.7%) and citronellol (22.9%).

Investigation of the essential oil of Erigeron acris L. Herb

Abstract The essential oil from Erigeron acris L. obtained by hydrodistillation was analyzed by GC and GC/MS techniques. Over 60 compounds were identified, representing 92.6% of the total components. The major constituents of the oil were monoterpenoid hydrocarbons [limonene, β-pinene, (E)-β-ocimene] and sesquiterpenoid hydrocarbons [α-muurolen, germacrene D, (E)-β-farnesene].

Changes in the Essential Oil of Conyza canadensis (L.) Cronquist. During Its Vegetation

Abstract The oil of Conyza canadensis from Bulgaria harvested during various the growth stages of the plant were investigated by GC and GC/MS. The main components were limonene (77.7-89.4%), trans-α-bergamotene (1.5-3.8%), β-pinene (0.8-6.6%) and carvone (0.5-1.8%). The percentage of limonene increased until the stage of blossom fall (89%) after which it decreased. The maximum content of (E)-β-ocimene (7.6%) was established prior to bud formation, while that of carvone reached a maximum at the commencement of budding. The maximum amounts of trans-α-bergamotene (3.8%) and of β-pinene occurred at the full bud formation stage and the end of the vegetation period, respectively.

Main Constituents of the Sesquiterpene Fraction of Polish Turpentine

ABSTRACT The sequiterpene fraction of turpentine oil is a by-product, produced during the production of wood-based panels from coniferous trees of Pinaceae family. GC and GC/MS analysis show that it is composed of over 80 compounds, the majority of which are sesquiterpene hydrocarbons. The main constituents identified in the sesquiterpene fraction were: α-muurolene (22%), longifolene (17.5%), γ-muurolene (6%) and δ-cadinene (5%).

Essential Oil from Stored Fruits of Amorpha fruticosa L

Abstract The essential oils from fruits of Amorpha fruticosa, which have been stored for 6, 18, 30 and 40 months, have been investigated by GC and GC-MS. The oils have been obtained by hydrodistillation and the yields have been (0.83, 0.85, 0.78 and 0.76%), respectively. The main component of the oils is γ-muurolene + ar curcumene (16.7 – 19.2%). The total sum of monoterpenes decreased and sesquiterpenes increased and sesquiterpenes increased during the storage of fruits.

Crystal and molecular structures of (+)cadinene dihydrochloride (1) and (-)cadinene dihydrochloride (2)

Two compounds, racemic (±)cadinene dihydrochloride C15H26C12 (1) and (−)cadinene dihydrochloride C15H26Cl2 (2), prepared by treating germacrene D fromSolidago canadensis L, and sesquiterpene fraction of essential oil fromPinus silvestris L, respectively, with gas HCl were investigated. Compound (1) crystallizes in monoclinic system, but (2) in orthorhombic (Table 1). The structures were found by direct methods and were refined with full matrix least-squares techniques to R value of 0.039 and 0.044, respectively, for (1) and (2).