| Summary: | 碩士 === 國立中興大學 === 食品暨應用生物科技學系所 === 106 === Zingiberaceae, a kind of herb plant, has been often used in vegetables, herbs, spices, pigments…etc, being closely related to the daily life and diet of Chinese. For many years, researchers have studied the chemical constituents and flavors of Zingiberaceae. Factors such as growth environment, origin area, climate and species can affect the function and flavor composition in the aromatic plants. In which, the aroma components of aromatic plants from different parts essential oils, could play an important role in the differentiation of the authenticity of essential oils.
Hence, an in-depth understanding of the aromatic components of essential oils from different part of the plant is crucial to establish a significant reference for clarifying the authenticity of the essential oils.
Hedychium coronarium, a pure white in appearance, fragrant and attractive aromatic plant, was used as the material in this study. The Clevenger-type apparatus was applied for extracting the essential oils from the different parts of this plant. The compositions of aromatic compounds from H. coronarium essential oils (including rhizome, stem, leaf and flower) originated from central and southern parts of Taiwan were analyzed by Gas Chromatography-Mass Spectrophotometer (GC-MS), while the data were arranged based on Principal of Component Analysis (PCA) to investigate the major compounds for each essential oil.
The results showed that the major compounds for essential oil from rhizome were 1,8-Cineole and Limonene, stem were β-Ocimene and Limonene, leaf were Caryophyllene, Limonene, δ-3-Carene and β-Terpinyl acetate, and flower were (E)-Labda-8(17),12-diene-15,16-dial. In addition, as for the major characteristic compounds of H. coronarium essential oils from central and southern parts of Taiwan found based on principal of components analysis (PCA), for example, rhizome essential oil was characterized by high content of α-terpineol, whose characteristics include woody, earthy and citrus notes. Meanwhile, essential oil of stem was characterized by 4-carene, leaf essential oil was characterized by caryophyllene, which characteristics with woody odor like clove notes.
Aromatic compound compositions for essential oils from rhizome, stem, leaf and flower of H. coronarium in central and southern Taiwan were not affected in compositions regardless of the growth environment. Although the experimental results might not be used to identify the authenticity of the H. coronarium essential oil in the market. The studies of H. coronarium essential oils were not limited to some parts of H. coronarium. H. coronarium rhizome, stem, leaf and flower essential oils major components and the characteristic compounds could be extended to become the raw materials for development of health foods and flavors.
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