Perennial stability of total quinolizidine alkaloid content in alkaloid-poor Washington lupin (Lupinus polyphyllusLindl)

1998 ◽  
Vol 76 (2) ◽  
pp. 195-199 ◽  
Author(s):  
Tadeusz Aniszewski
Keyword(s):  
Alkaloid Content ◽  
Quinolizidine Alkaloid

Interrelationship between Quinolizidine Alkaloid Producing Legumes and Infesting Insects: Exploitation of the Alkaloid- Containing Phloem Sap of Cytisus scoparius by the Broom Aphid Aphis cytisorum

1982 ◽  
Vol 37 (11-12) ◽  
pp. 1081-1086 ◽  
Author(s):  
Michael Wink ◽  
Thomas Hartmann ◽  
Ludger Witte ◽  
Joachim Rheinheimer
Keyword(s):  
Direct Evidence ◽  
Xylem Sap ◽  
Aphid Resistance ◽  
Alkaloid Content ◽  
Quinolizidine Alkaloids ◽  
Cytisus Scoparius ◽  
Aphid Infestation ◽  
Phloem Sap ◽  
Quinolizidine Alkaloid ◽  
Evidence Analysis

Abstract Aphids (Aphis cytisorum) which infest broom plants (Cytisus scoparius) accumulate up to 500 μg alkaloid/g fr. wt. The alkaloids, which are similar to those of the plants, consist of 17-oxo-sparteine, sparteine, 12,13-dehydrosparteine, and lupanine. Infested plants contain > 50% less alkaloids than aphid-free plants. In Lupinus aphid resistance which is due to their high alkaloid content is more expressed: Whereas bitter varieties are free from aphids, only the sweet alkaloid-free plants are susceptible to aphid infestation. The accumulation of alkaloids in aphids indicates that the quinolizidine alkaloids are translocated via the phloem in legume plants. This assumption is supported by direct evidence: analysis of phloem sap from Lupinus contains up to 5 mg alkaloid whereas xylem sap is virtually free of alkaloids. The interrelationship between quinolizidine alkaloids and hervivores is discussed.

HERG channel inhibiting activity of Rauvolfia nukuhivensis alkaloid content

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
NJ Martin ◽  
EA López ◽  
G Lecellier ◽  
M Nicolas ◽  
C Paetz ◽  
...  
Keyword(s):  
Alkaloid Content ◽  
Herg Channel ◽  
Inhibiting Activity

Variation in the alkaloid content of different subspecies of Chamaecytisus proliferus from the Canary Islands

1996 ◽  
Vol 719 (1) ◽  
pp. 237-243 ◽  
Author(s):  
M. Muzquiz ◽  
L.M. Robredo ◽  
C. Burbano ◽  
C. Cuadrado ◽  
G. Ayet ◽  
...  
Keyword(s):  
Canary Islands ◽  
Alkaloid Content ◽  
Chamaecytisus Proliferus

The Chemistry of Western Australian Plants. IV. Duboisia hopwoodii

1951 ◽  
Vol 4 (1) ◽  
pp. 107
Author(s):  
W Bottomley ◽  
DE White
Keyword(s):  
Ursolic Acid ◽  
Soil Type ◽  
Alkaloid Content ◽  
Quercetin Glycoside ◽  
Western Australian

Examination of a large number of samples of Duboisia hopwoodii has confirmed the findings of Bottomley, Nottle, and White (1946). The methods used for the estimation of nicotine and nornicotine are described and the results summarized. These could not be correlated with locality, season, or soil type, and examination of fresh leaves showed that the alkaloid content is considerably reduced on drying. �� Samples of nicotine and nornicotine have been prepared and ursolic acid and a quercetin glycoside have been isolated from D. hopwoodii leaves.

Integrated Ultrasound-Mechanical Stirrer Technique for Extraction of Total Alkaloid Content from Annona muricata

2021 ◽  
Author(s):  
Chia Hau Lee ◽  
Lee Ting Hun ◽  
Pei Ying Ong ◽  
Syie Luing Wong ◽  
Norfadilah Hamdan ◽  
...  
Keyword(s):  
Total Alkaloid ◽  
Alkaloid Content ◽  
Annona Muricata ◽  
Total Alkaloid Content

Dynamics of the alkaloid content of Lilium martagon

1991 ◽  
Vol 26 (4) ◽  
pp. 476-477 ◽  
Author(s):  
F. Fatkhiev ◽  
K. Samikov ◽  
R. Shakirov
Keyword(s):  
Alkaloid Content

Changes in the Alkaloid Content of Developing Fruits of Tomato (Lycopersicon esculentumMill.)

1984 ◽  
Vol 35 (2) ◽  
pp. 261-267 ◽  
Author(s):  
ELSADIG A. ELTAYEB ◽  
JAMES G. RODDICK
Keyword(s):  
Alkaloid Content
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