• Applied Biological Chemistry
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• 제48권3호
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• pp.292-295
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• 2005

Branched methyl group을 가지는 아프리카산 난(Aerangis confusa, Aerangis kirkii) 꽃의 천연향기성분인 methyl 3-methyloctanoate를 값싼 미생물 발효산물인 itaconic acid를 출발 물질로 하여 제조한 branched metyl group을 부분구조로 가지는 2-methyl-1,4-butandiol를 중간체로 하여 전 공정 9단계로 합성하였다. 최종 향기성분 metyl 3-methyloctanoate의 methyl ester대신 다양한 알킬 ester 화합물을 합성하여 그 향을 비교한 결과 서로 상이한 향 특성을 나타내므로 화장품이나 식품산업에 있어서 유용한 향료조성물의 첨가소재로 개발 가능하리라 사료된다.

• 원예과학기술지
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• 제30권6호
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• pp.617-625
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• 2012

Tree peony is a traditional famous flower of China, and plays an important role in Chinese traditional culture. But the floral scent of tree peony in vivo is little known. In this study, in order to explore the floral composition of tree peony, floral volatiles of six cultivars, including Paeonia suffruticosa 'Zhaofen' (ZF), P. suffruticosa 'Luoyanghong' (LYH), P. ostii 'Fengdanbai' (FDB), P. ${\times}$ lemonei 'High noon' (HN), P. ${\times}$ lemonei 'Renown' (R), and P. rockii 'Gaoyuanshenghuo' (GYSH) were collected by dynamic headspace and then identified by Automated Thermal Desorption-Gas Chromatography/Mass Spectometry. The results showed that floral fragrances of the six cultivars were qualitatively and quantitatively distinct. A total of 105 volatiles involving ten categories were detected. But not all volatile categories were emitted from these cultivars. The six peony cultivars emitted some shared compounds and peculiar compounds. The total released amounts of volatiles emitted from six cultivars were found significantly different, which was greatest for 'GYSH'. The most abundant volatile compounds detected from 'ZF', 'LYH', 'FDB', 'HN', 'R', and 'GYSH' were respectively ${\alpha}$-pinene, 2,3-dihydroxy propanal, 3-methyl-1-butanol, 2-ethyl-1-hexanol, acetic acid 1-methylethyl ester, and 5-ethyl-2,2,3-trimethyl heptane. This result may contribute to exploring the biosynthesis and emission mechanism of floral scent in tree peony.

• 현장농수산연구지
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• 제24권1호
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• pp.5-13
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• 2022

우리나라 남부와 서해 해안가를 중심으로 자생하고 있는 순비기나무는 자원 활용 측면에서 많은 활용 가치를 가지고 있다. 예로부터 민간에서 민간약재로 이용하거나 한약재로 사용되었다. 잎과 줄기에서도 강한 향이 나지만 열매에서도 강한 향이 나서 순비기나무 열매를 이용해 에센스오일을 추출하여 성분을 분석한 연구는 일부 있지만 하이드로졸을 추출하여 이에 대한 향기성분의 연구는 거의 없다. 이유는 열매가 딱딱하여 일반적인 추출방법으로는 함유된 유효 성분을 확인하는 것이 어렵기 때문이다. 따라서 본 연구는 추출방법을 달리하여 딱딱한 열매를 고온으로 추출하여 얻은 하이드로졸의 향에 함유된 성분을 분석한 결과는 다음과 같다. 1. 플라보노이드 함량이 가장 많은 추출조건은 ethanol로 30.57mg/g 이었고 다음으로 열수추출물로 18.26mg/g, 물 추출물이 가장 낮은 9.69mg/g이었다. 2. 순비기나무 열매를 증류추출한 결과 하이드로졸의 향기는 3-Methyl-2-butenoic acid, cyclobutyl ester, Eucalyptol, L-alpha-Terpineol, 1H-Cycloprop[e] azulen-7-ol, decahydro-1,1,7-trimethyl-4-methylene-, [1ar-(1a.alpha.,4a.alpha.,7.beta.,7a.beta.,7b. alpha.)]가 많은 것으로 나타났다.

• Journal of Ecology and Environment
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• 제46권1호
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• pp.62-75
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• 2022

Background: Pollinators help plants to reproduce and support economically valuable food for humans and entire ecosystems. However, declines of pollinators along with population growth and increasing agricultural activities hamper this mutual interaction. Nectar and pollen are the major reward for pollinators and flower morphology and volatiles mediate the specialized plant-pollinator interactions. Limited information is available on the volatile profiles attractive to honey bees and bumblebees. In this study we analyzed the volatile organic compounds of the flowers of 9 different plant species that are predominantly visited by honey bees and bumblebees. The chemical compositions of the volatiles were determined using a head space gas chromatography-mass spectrometry (GC-MS) method, designed to understand the plant-pollinator chemical interaction. Results: Results showed the monoterpene 1,3,6-octatriene, 3,7-dimethyl-, (E) (E-𝞫-ocimene) was the dominating compound in most flowers analyzed, e.g., in proportion of 60.3% in Lonicera japonica, 48.8% in Diospyros lotus, 38.4% Amorpha fruticosa and 23.7% in Robinia pseudoacacia. Ailanthus altissima exhibited other monoterpenes such as 3,7-dimethyl-1,6-octadien-3-ol (𝞫-linalool) (39.1%) and (5E)-3,5-dimethylocta-1,5,7-trien-3-ol (hotrienol) (32.1%) as predominant compounds. Nitrogen containing volatile organic compounds (VOCs) were occurring principally in Corydalis speciosa; 1H-pyrrole, 2,3-dimethyl- (50.0%) and pyrimidine, 2-methyl- (40.2%), and in Diospyros kaki; 1-triazene, 3,3-dimethyl-1-phenyl (40.5%). Ligustrum obtusifolium flower scent contains isopropoxycarbamic acid, ethyl ester (21.1%) and n-octane (13.4%) as major compounds. In Castanea crenata the preeminent compound is 1-phenylethanone (acetophenone) (46.7%). Conclusions: Olfactory cues are important for pollinators to locate their floral resources. Based on our results we conclude monoterpenes might be used as major chemical mediators attractive to both honey bees and bumblebees to their host flowers. However, the mode of action of these chemicals and possible synergistic effects for olfaction need further investigation.