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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 張上鎮(Shang-Tzen Chang) | |
| dc.contributor.author | Ying-Ju Chen | en |
| dc.contributor.author | 陳盈如 | zh_TW |
| dc.date.accessioned | 2021-06-13T03:45:54Z | - |
| dc.date.available | 2006-11-23 | |
| dc.date.copyright | 2006-07-31 | |
| dc.date.issued | 2006 | |
| dc.date.submitted | 2006-07-25 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/32379 | - |
| dc.description.abstract | 為了能準確快速的鑑別土肉桂（Cinnamomum osmophloeum）與臺灣肖楠（Calocedrus formosana）品系，本試驗利用固相微萃取（Solid-phase microextraction, SPME）技術分析其葉部揮發成分進而鑑定品系。以PDMS/DVB與CAR/PDMS吸附纖維進行土肉桂與臺灣肖楠葉部揮發成分之吸附，經比較各種吸附條件後發現，以0.3 g之樣本重量、50℃之水浴溫度、5 min之水浴加熱時間、15 min之吸附時間以及5 min之脫附時間所獲得之分析效果最佳。不同地理品系之土肉桂葉部揮發成分，以SPME方法直接偵測與水蒸餾法所得精油經氣相層析-質譜儀分析鑑定與群團分析後，結果顯示SPME法與水蒸餾法所獲得之分類結果一致，臺灣肖楠雖未獲得一致結果，但SPME分析方法具有良好再現性，加上其分析快速的特性，可有效應用於土肉桂揮發成分之分析與品系鑑定，迅速辨認品系且大幅縮減分析所需時間，於土肉桂品系之篩選及應用上為一有效的分析工具。
土肉桂葉揮發成分的季節變化方面，長日照（14 hr Photoperiod）之控制條件下，Xin21苗木之trans-Cinnamaldehyde的相對含量隨溫度增高而減少，而Cinnamyl acetate則與trans-Cinnamaldehyde呈現相反趨勢，其相對含量隨溫度之增高而增加，但在短日照條件下，則隨溫度之增高而減少。而LL苗木之主成分Linalool，其相對含量在長、短日照條件下都隨溫度增高而增加，且以短日照週期對其含量的增加更為明顯。至於臺灣肖楠葉揮發成分之全日經時變化，無論在晴天或陰雨天，其揮發量一日中均有三組高峰出現，晴天時分別於凌晨3~4時、中午11~13時以及夜晚23時；陰雨天則於凌晨2~6時、中午15~17時以及夜晚20~23時，這種階段性高峰量的現象，可能來自於植物日時鐘的規律性調控所造成。此外，Limonene與Myrcene之比例變化亦具有相同的趨勢，且以Limonene之含量高於Myrcene；而α-Pinene則恰與二者呈現相反的趨勢，根據其他相關研究報告，推測此種互補性的變化趨勢乃由於其次生合成途徑的差異所造成。 | zh_TW |
| dc.description.abstract | In this study, SPME fibers coated with PDMS/DVB coupled with gas chromatography/mass spectrometry was used to examine the biogenic volatile organic compounds (BVOCs) from leaves of Cinnamomum osmophloeum Kaneh. and Calocedrus macrolepis Kurz var. formosana (Florin) Cheng and L.K. Fu from various geographical provenances and to identify their chemotypes. In addition, we also monitored the daily variation of major volatile compounds emitted from C. macrolepsis var. formosana leaves. The optimum absorbing conditions were summarized as follows: 0.3 g of leaf sample was heated in 50℃ water bath for 5 min following by the absorbtion of SPME for 15 min, and then desorbed for 5 min in GC/MS. The BVOCs of C. osmophloeum leaves analyzed by SPME method were correlated well with those of hydrodistilled essential oils. Furthermore, the results of cluster analysis also showed that the chemotype identifications obtained either by SPME or hydrodistillation method were consistent for C. osmophloeum, but slightly inconsistent for C. macrolepsis var. formosana. However, the efficiency and reproducibility of SPME method make it a reliable tool for quickly identifying the chemotypes of C. osmophloeum by their BVOCs.
With increasing environment temperature under 14 hr of photoperiod treatment, the relative concentration of trans-cinnamaldehyde in C. osmophloeum Xin21 decreased, whereas cinnamyl acetate increased. However, cinnamyl acetate decreased as the temperature increased with 10 hr of photoperiod treatment. The relative concentration of linalool for the linalool type of C. osmophloeum LL increased with the increase of temperature, regardless of whether it was 10 hr or 14 hr photoperiod, and the proportional of linalool was higher in the 10 hr photoperiod compared with the 14 hr photoperiod, with an increase of 6-9％, indicating that short photoperiod enriched in the amount of linalool. Furthermore, the circadian profile for limonene and myrcene emitted from C. macrolepsis var. formosana leaves had a similar tendency, and the quantity of limonene was significantly higher than myrcene. Conversely, the circadian profile of α-pinene observed was opposite to those of limonene and myrcene. | en |
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| dc.description.tableofcontents | 目錄 ............................................... I
表目次 ............................................. III 圖目次 .............................................. V 摘要 ................................................ VIII Abstract ............................................ X 壹、緒言 ............................................ 1 貳、文獻回顧 ........................................ 4 一、土肉桂之簡介 ................................. 4 二、土肉桂品系分類之相關研究 ..................... 5 三、臺灣肖楠之介紹與相關研究 ..................... 8 四、季節對植物 BVOCs 揮發之影響 .................. 10 五、萜類化合物及其生合成途徑之相關研究 ........... 15 六、生物體揮發性有機物（BVOCs）的採樣方法 ........ 21 七、固相微萃取（SPME）之原理與介紹 ............... 22 （一）SPME的裝置與基本操作程序 ................. 22 （二）SPME的吸附纖維種類與特性 ................. 24 （三）影響萃取效率之條件 ....................... 26 （四）脫附條件之控制 ........................... 27 八、SPME在植物揮發成分鑑定上之應用 ............... 27 参、材料與方法 ...................................... 30 一、試驗材料 ..................................... 30 （一）精油之萃取 ............................... 30 （二）精油成分之鑑定 ........................... 30 （三）SPME吸附纖維選擇 ......................... 31 （四）SPME對土肉桂葉片揮發成分萃取條件之選擇 ... 31 （五）不同品系土肉桂與臺灣肖楠葉揮發成分之偵測 . 32 （六）以溫度與光週期變化模擬季節性對土肉桂葉片揮 發成分之影響 ...................... 32 （七）臺灣肖楠葉揮發成分之經時變化偵測 ......... 33 （八）資料處理 ................................. 34 肆、結果與討論 ...................................... 35 （一）SPME吸附纖維萃取效率之比較 ............... 35 （二）SPME對土肉桂葉片揮發成分之最佳萃取條件 ... 37 1. 樣本重量之比較 ....................... 37 2. 水浴溫度之比較 ....................... 38 3. 水浴加熱時間之比較 ................... 39 4. 吸附時間之比較 ....................... 39 5. 脫附時間之比較 ....................... 40 （三）土肉桂葉片精油成分分析與品系鑑定之探討 ... 41 （四）溫度與光週期改變對土肉桂葉片揮發成分之影響 48 （五）臺灣肖楠葉片精油成分分析與品系鑑定之探討 . 62 （六）臺灣肖楠葉片揮發成分之經時變化 ........... 77 伍、結論 ............................................ 85 陸、參考文獻 ........................................ 87 | |
| dc.language.iso | zh-TW | |
| dc.subject | 氣相層析-質譜分析 | zh_TW |
| dc.subject | 固相微萃取 | zh_TW |
| dc.subject | 土肉桂 | zh_TW |
| dc.subject | 臺灣肖楠 | zh_TW |
| dc.subject | 生物體揮發性有機化合物 | zh_TW |
| dc.subject | 葉子精油 | zh_TW |
| dc.subject | 化學品系 | zh_TW |
| dc.subject | Solid-phase microextraction (SPME) | en |
| dc.subject | Gas chromatography-Mass spectrometry | en |
| dc.subject | Leaf essential oils | en |
| dc.subject | Biogenic volatile organic compounds (BVOCs) | en |
| dc.subject | Calocedrus macrolepis var. formosana | en |
| dc.subject | Cinnamomum osmophloeum | en |
| dc.subject | Chemotype | en |
| dc.title | 應用固相微萃取技術於土肉桂及臺灣肖楠葉揮發成分之分析 | zh_TW |
| dc.title | Applications of Solid-Phase Microextraction (SPME) to the Analysis of VOCs from the Leaves of Cinnamomum osmophloeum and Calocedrus macrolepis var. formosana | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 94-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 王松永(Song-Yung Wang),劉正字(Cheng-Tzu Liu),王升揚(Sheng-Yang Wang),張惠婷(Hui-Ting Chang) | |
| dc.subject.keyword | 固相微萃取,土肉桂,臺灣肖楠,生物體揮發性有機化合物,葉子精油,化學品系,氣相層析-質譜分析, | zh_TW |
| dc.subject.keyword | Solid-phase microextraction (SPME),Cinnamomum osmophloeum,Calocedrus macrolepis var. formosana,Biogenic volatile organic compounds (BVOCs),Leaf essential oils,Chemotype,Gas chromatography-Mass spectrometry, | en |
| dc.relation.page | 93 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2006-07-26 | |
| dc.contributor.author-college | 生物資源暨農學院 | zh_TW |
| dc.contributor.author-dept | 森林環境暨資源學研究所 | zh_TW |
| 顯示於系所單位： | 森林環境暨資源學系 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-95-1.pdf 未授權公開取用 | 2.42 MB | Adobe PDF |
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