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RISS 인기검색어
- 검색키워드
- 저자 : Chung-Ja C. Jackson (검색결과 5 건)
- 무료
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Jackson, Chung Ja C.,Dini, Jean-Paul,Lavandier, Clara,Faulkner, Harold,Rupasinghe, H.P. vasantha,Proctor, John T.A. The Korean Society of Ginseng 2003 Journal of Ginseng Research Vol.27 No.3
North American ginseng (Panax quinquefolius L.) was analysed for total ginsenosides and ten major ginsenosides (R$_{0}$ , Rb$_1$, Rb$_2$, Rc, Rd, Re, Rf, Rg$_1$, pseudoginsenoside F$_{11}$ and gypenoside XVII), and variations in ginsenoside content with age of plant (over a four-year-period) and geographic location (Ontario versus British Columbia) were investigated. In the roots the total ginsenoside content increased with age up to 58-100 mgㆍg$^{-1}$ dry weights in the fourth year, but in leaves it remained constant over time. Roots and leaves, moreover, had different proportions of individual ginsenosides. The most abundant ginsenosides were Rb$_1$ (56mgㆍg$^{-1}$ for Ontario; 37mgㆍg$^{-1}$ for British Columbia) and Re (21mgㆍg$^{-1}$ for Ontario; 15 mgㆍg$^{-1}$ for British Columbia) in roots, and Rd (28-38 mgㆍg$^{-1}$ ), Re (20-25 mgㆍg$^{-1}$ ), and Rb$_2$ (13-19 mgㆍg$^{-1}$ ) in leaves. Measurable quantities of Rf were found in leaves (0.4-1.8 mgㆍg$^{-1}$ ) but not in roots or stems. Our results show that ginsenoside profiles in general, and Rf in particular, could be used for chemical fingerprinting to distinguish the different parts of the ginseng plant, and that ginseng leaves could be valuable sources of the ginsenosides Rd, Re, and Rb$_2$.
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Chung-Ja C. Jackson,Jean Paul Dini,Clara Lavandier,Harold Faulkner,H. P. Vasantha Rupasinghe,John T. A. Proctor 고려인삼학회 2003 Journal of Ginseng Research Vol.27 No.3
North American ginseng (Panax quinquefolius L.) was analysed for total ginsenosides and ten major ginsenosides (R0, Rb1, Rb2, Rc, Rd, Re, Rf, Rg1, pseudoginsenoside F11, and gypenoside XVII), and variations in ginsenoside content with age of plant (over a four-year-period) and geographic location (Ontario versus British Columbia) were investigated. In the roots the total ginsenoside content increased with age up to 58-100 mgㆍg.1 dry weights in the fourth year, but in leaves it remained constant over time. Roots and leaves, moreover, had different proportions of individual ginsenosides. The most abundant ginsenosides were Rb1 (56 mgㆍg.1 for Ontario; 37 mgㆍg.1 for British Columbia) and Re (21 mgㆍg.1 for Ontario; 15 mgㆍg.1 for British Columbia) in roots, and Rd (28-38 mgㆍg.1), Re (20-25 mgㆍg.1), and Rb2 (13-19 mgㆍg.1) in leaves. Measurable quantities of Rf were found in leaves (0.4-1.8 mgㆍg.1) but not in roots or stems. Our results show that ginsenoside profiles in general, and Rf in particular, could be used for chemical fingerprinting to distinguish the different parts of the ginseng plant, and that ginseng leaves could be valuable sources of the ginsenosides Rd, Re, and Rb2.
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Taehyun Ahn,Chung-Ja C. Jackson 한국원예학회 2007 Horticulture, Environment, and Biotechnology Vol.48 No.1
Fresh-cut of eight apple cultivars (Malus × domestica, ‘Empire’, ‘Honeycrisp’, ‘Spartan’, ‘Cortland’, ‘Crispin’, ‘Granny Smith’, ‘Idared’, and ‘Delicious’) removed after 1 month in air storage or after 3 months in controlled atmosphere (CA) storage were investigated during 15 days of storage period after the application of a commercial anti-browning solution and assessed for fresh-cut suitability. Visual evaluation (color and appearance), color by colorimeter, firmness, and total soluble solid concentration of fresh-cut apple were determined. Based upon visual evaluation, ‘Granny Smith’ and ‘Idared’ removed after 3 months in CA storage and ‘Empire’ regardless of the storage condition were the most suitable cultivars. In the colorimetric evaluation, ‘Empire’, ‘Honeycrisp’, and ‘Spartan’ removed after 3 months in CA storage showed the least color deterioration, and based on firmness, ‘Idared’ was the most suitable. ‘Empire’ and ‘Honeycrisp’ showed excellent performance for fresh-cut, while the total soluble solid concentration did not show considerable variation for quality of fresh-cut apples during the 15 day storage period. In the order of preference, ‘Empire’ was the most suitable cultivar, ‘Idared’ and ‘Honeycrisp’ were highly acceptable, ‘Spartan’ and ‘Granny Smith’ were considerably acceptable, while ‘Cortland’ and ‘Crispin’ especially ‘Delicious’ were unacceptable for fresh-cut.
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Morphological and Ginsenoside Differences among North American Ginseng Leaves
John T. A. Proctor,Alan J. Sullivan,Vasantha P. V. Rupasinghe,Chung-Ja C. Jackson 고려인삼학회 2011 Journal of Ginseng Research Vol.35 No.2
Leaf characteristics of mature 2, 3 and 4-year-old North American ginseng (Panax quinquefolius L.) leaves on fruiting and nonfruiting (NF) plants were studied. Leaflets of the 2-year-old plants had the lowest fresh and dry weight, area, volume and internal gas volume. Inflorescence removal in 3-year-old plants did not affect leaf characteristics or ginsenoside concentration but in 4-yearold plants it increased leaf fresh (38.6%) and dry (43.9%) weight, leaf area (29.1%), specific leaf mass (11.4%), leaf volume (43.1%), and leaf thickness (12.1%), and decreased leaf water content (6.2%). Cultivated ginseng, although an understorey plant, had the specific leaf mass, 35.6 g m?² (range, 36 to 39 g m?²) and a chlorophyll a/b ratio of 2.40 to 2.61, both suggesting the ability to perform like a sunny habitat plant. Also, specific leaf mass of 35.6 g m?² is similar to that reported for perennial plants, 36.8 g m?², rather than that for annuals, 30.9 g m?².
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Morphological and Ginsenoside Differences among North American Ginseng Leaves
Proctor, John T.A.,Sullivan, Alan J.,Rupasinghe, Vasantha P.V.,Jackson, Chung-Ja C. The Korean Society of Ginseng 2011 Journal of Ginseng Research Vol.35 No.2
Leaf characteristics of mature 2, 3 and 4-year-old North American ginseng (Panax quinquefolius L.) leaves on fruiting and non-fruiting(NF) plants were studied. Leaflets of the 2-year-old plants had the lowest fresh and dry weight, area, volume and internal gas volume. Inflorescence removal in 3-year-old plants did not affect leaf characteristics or ginsenoside concentration but in 4-year-old plants it increased leaf fresh (38.6%) and dry (43.9%) weight, leaf area (29.1%), specific leaf mass (11.4%), leaf volume (43.1%), and leaf thickness (12.1%), and decreased leaf water content (6.2%). Cultivated ginseng, although an understorey plant, had the specific leaf mass, 35.6 g $m^{-2}$ (range, 36 to 39 g $m^{-2}$) and a chlorophyll a/b ratio of 2.40 to 2.61, both suggesting the ability to perform like a sunny habitat plant. Also, specific leaf mass of 35.6 g $m^{-2}$ is similar to that reported for perennial plants, 36.8 g $m^{-2}$, rather than that for annuals, 30.9 g $m^{-2}$.
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