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Quantitative analysis of trace levels of β-ionone in water by liquid-liquidphase extraction-gas chromatography-mass spectrometry(LLE-GC-MS)

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Journal of Central South University 2015年第2期22卷 472-477页

作者：高梦鸿高乃云谢茴茴安娜邓扬戎文磊 College of Environmental Science and Engineering Tongji University Tongji Architectural Design (Group) Co. Ltd.(TJAD) College of Earth and Environmental Studies Montclair State University Wuxi Water Works Co. Ltd.

A simple and rapid technique based on liquid-liquid extraction coupled to gas chromatography-mass spectrometric detection(LLE-GC-MS) was developed for analysis of taste and odour compound β-ionone in water. Instrument parameters including programmed oven temperature, injection temperature and ion source temperature were evaluated and optimized. Effects of extraction time, ionic strength and p H on the detection efficiency were investigated and optimum conditions were 8 min of extraction time, without Na Cl addition at p H=9. Good linearity(R2=0.9997) was obtained when the linear range was 10-500 μg/L. The recoveries of β-ionone in ultrapure water and tap water samples were 88%-95% and 110%-114%, respectively. The relative standard deviations(RSD) were less than 10%. The method detection limit(MDL) and rejection quality level(RQL) were achieved at1.98 μg/L and 6.53 μg/L, respectively. LLE-GC-MS was demonstrated to be a rapid and convenient method for the determination ofβ-ionone in water samples.

关键词： liquid-liquid extraction gas chromatography-mass spectrometry β-ionone water

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Promoter and coding sequence diversity of CsCCD1 may contribute to the differential accumulation of floralβ-ionone in fresh tea leaves

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Horticultural Plant Journal 2023年第4期9卷 837-847页

作者： Jingming Wang Mingyue Zhao Ting Gao Yingying Feng Feiquan Wang Yuting Pan Jieyang Jin Tingting Jing Mengqian Lu Mengting Zhang Danyang Guo Xiaochun Wan Wilfried Schwab Chuankui Song State Key Laboratory of Tea Plant Biology and Utilization International Joint Laboratory on Tea Chemistry and Health EffectsAnhui Agricultural UniversityHefeiAnhui 230036China Wuyi University WuyishanFujian 354300China Biotechnology of Natural Products Technische Universität MünchenLiesel-Beckmann-Str.1Freising 85354Germany

The carotenoid-derived volatileβ-ionone makes an important contribution to tea ***,we qualitatively and quantitatively analysed 15 carotenoids in tea leaves of 13 cultivars by UHPLC-APCI-MS/*** 13 cultivars were divided into two groups by PCA(Principal Component Analysis)clustering analysis of their carotenoid content,and OPLS-DA(Orthogonal projections to latent structures)indicated that the levels ofβ-carotene(VIP=2.89)and lutein(VIP=2.30)were responsible for much of the variation between the two ***,theβ-carotene toβ-ionone conversion rates in Group 1 were higher than in Group 2,while theβ-carotene content was significantly lower in Group 1 than in Group ***β-ionone content was significantly higher in Group *** Correlation Coefficient calculation between the transcription level of candidate genes(CsCCD1 and CsCCD4)and the accumulation ofβ-ionone indicated that CsCCD1 may involve in the formation ofβ-ionone in 13 *** expression and in vitro enzyme activity assays showed that‘Chuanhuang 1’had an amino acid mutation in carotenoid cleavage dioxygenases 1(CsCCD1)compared with‘Shuchazao’,resulting in a significantly higherβ-ionone content in‘Chuanhuang 1’.Sequence analysis showed that‘Chuanhuang 1’and‘Huangdan’had different CsCCD1 promoter sequences,leading to significantly higher CsCCD1 expression andβ-ionone accumulation in‘Chuanhuang 1’.These results indicated that the promoter and coding sequence diversity of CsCCD1 might contribute to the differential accumulation ofβ-ionone in different tea cultivars.

关键词： Camellia sinensis(L.)Kuntze Carotenoid cleavage dioxygenase β-carotene β-ionone Promoter Differential accumulation

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Effects of β-ionone on Mammary Carcinogenesis and Antioxidant Status in Rats Treated with DMBA

Effects of β-ionone on Mammary Carcinogenesis and Antioxida...

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第八届全国儿童肿瘤学术会议

作者：刘跃梅吴平辉刘家仁金先庆刘潜赣南医学院第一附属医院儿科赣南医学院第一附属医院小儿外科哈佛大学医学院波士顿儿童医院重庆医科大学儿童医院普外科

＜正＞【Objective】Recent chemopreventive studies from our group showed that dietaryβ-ionone inhibited 7,12-dimethylbenz（a）anthracene（DMBA）-induced mammary carcinogenesis by the inhibition of cell proliferation and apoptosis initiation.,to further study the mechanism,experiments below were conducted.【Methods】we examined the chemopreventive effects of varied doses of dietaryβ-ionone on the

关键词： β-ionone mammary carcinogenesis lipid peroxidation(LPO) antioxidants

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Engineering a non-model yeast Rhodotorula mucilaginosa for terpenoids synthesis

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Synthetic and Systems Biotechnology 2024年第3期9卷 569-576页

作者： Qiongqiong Chen Liting Lyu Haizhao Xue Aabid Manzoor Shah Zongbao Kent Zhao Laboratory of Biotechnology Dalian Institute of Chemical PhysicsCAS457 Zhongshan RoadDalian116023China MOE Key Laboratory of Bio-Intelligent Manufacturing School of BioengineeringDalian University of TechnologyDalian116024China University of Chinese Academy of Sciences 19 Yuquan RoadBeijing100049China

Terpenoids have tremendous biological activities and are widely employed in food,healthcare and pharmaceutical *** synthetic biology to product terpenoids from microbial cell factories presents a promising alternative route compared to conventional methods such as chemical synthesis or *** red yeast Rhodotorula mucilaginosa has been widely studied due to its natural production capacity of carotenoid and lipids,indicating a strong endogenous isoprene pathway with readily available metabolic *** study constructed several engineered strains of *** with the aim of producing different ***α-terpineol was produced by expressing theα-terpineol synthase from Vitis *** titer ofα-terpineol was further enhanced to 0.39 mg/L by overexpressing the endogenous rate-limiting gene of the MVA *** ofα-farnesene synthase from Malus domestica,in combination with MVA pathway rate-limiting gene resulted in significant increase inα-farnesene production,reaching a titer of 822 mg/*** carotenoid degradation productβ-ionone was produced at a titer of 0.87 mg/L by expressing theβ-ionone synthase from Petunia *** study demonstrates the potential of *** as a platform host for the direct biosynthesis of various terpenoids and provides insights for further development of such platforms.

关键词： Rhodotorula mucilaginosa Synthetic biology α-Terpineol β-ionone α-Farnesene

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Odorants could elicit repair processes in melanized neuronal and skin cells

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Neural Regeneration Research 2017年第9期12卷 1401-1404页

作者： Barbara Pavan Alessandro Dalpiaz Department of Life Sciences and Biotechnology University of Ferrara Department of Chemistry and Pharmaceutical Sciences University of Ferrara

The expression of ectopic olfactory receptors （ORs） in melanized cells, such as the human brain nigrostri- atal dopaminergic neurons and skin melanocytes, is here pointed out. ORs are recognized to regulate skin melanogenesis, whereas OR expression in the dopaminergic neurons, characterized by accumulation of pigment neuromelanin, is downregulated in Parkinson＇s disease. Furthermore, the correlation between the pigmentation process and the dopamine pathway through ct-synuclein expression is also highlighted. Purposely, these ORs are suggested as therapeutic target for neurodegenerative diseases related to the pig- mentation disorders. Based on this evidence, a possible way of turning odorants into drugs, acting on three specific olfactory receptors, OR51E2, OR2AT4 and VN1R1, is thus introduced. Various odorous molecules are shown to interact with these ORs and their therapeutic potential against melanogenic and neurodegen- erative dysfunctions, including melanoma and Parkinson＇s disease, is suggested. Finally, a direct functional link between olfactory and endocrine systems in human brain through VNIR1 is proposed, helping to counteract female susceptibility to Parkinson＇s disease in quiescent life.

关键词： OR51E2 OR2AT4 VN1R1 melanoma Parkinson's disease β-ionone sandalore hedione

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