Two new chemical constituents from Lonicera japonica

2021 ◽  
pp. 1-7
Author(s):  
Jian-liang Geng ◽  
Hai-bo Li ◽  
Wen-jun Liu ◽  
Zhen-zhong Wang ◽  
Wen Ge ◽  
...  
Keyword(s):  
Chemical Constituents ◽  
Lonicera Japonica

Chemical constituents from Lonicera japonica flower buds and their anti-hepatoma and anti-HBV activities

2019 ◽  
Vol 92 ◽  
pp. 103198 ◽  
Author(s):  
Lanlan Ge ◽  
Lingyun Xiao ◽  
Haoqiang Wan ◽  
Jiemei Li ◽  
Kongpeng Lv ◽  
...  
Keyword(s):  
Chemical Constituents ◽  
Lonicera Japonica ◽  
Flower Buds

scholarly journals Chemical Constituents and LC-profile of Fresh Formosan Lonicera Japonica Flower Buds

2016 ◽  
Vol 11 (1) ◽  
pp. 1934578X1601100
Author(s):  
I-Wen Lo ◽  
Yuan-Bin Cheng ◽  
Yi-Jin Hsieh ◽  
Tsong-Long Hwang ◽  
Deng-En Shieh ◽  
...  
Keyword(s):  
Chlorogenic Acid ◽  
Calibration Curve ◽  
Active Component ◽  
Chemical Constituents ◽  
Dimethyl Acetal ◽  
Lonicera Japonica ◽  
Flower Buds ◽  
Iridoid Glucosides ◽  
Chemical Profiles ◽  
Secoiridoid Glucoside

One new secoiridoid glucoside, ethylsecologanin dimethyl acetal (1), along with 15 known compounds, comprising six iridoid glucosides (2–7), six flavonoids (8–13), two sterol glucosides (14 and 15), and chlorogenic acid (16) were isolated from the flower buds of Formosan Lonicera japonica. The structures of these isolates were determined on the basis of mass and spectroscopic analyzes. In addition, the chemical profiles of fresh Formosan honeysuckle buds and the dried Chinese one were compared by HPLC with a PDA detector. The calibration curve of the active component, chlorogenic acid, was also provided. As a result of the constituent similarity, Formosan L. japonica can be an alternative to the Chinese honeysuckles.

scholarly journals Influence of Sulfur Fumigation on the Chemical Constituents and Antioxidant Activity of Buds of Lonicera japonica

Molecules ◽  
2014 ◽  
Vol 19 (10) ◽  
pp. 16640-16655 ◽  
Author(s):  
Ai-Li Guo ◽  
Liang-Mian Chen ◽  
Yan-Min Wang ◽  
Xiao-Qian Liu ◽  
Qi-Wei Zhang ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Constituents ◽  
Lonicera Japonica

Electron microscopic studies on ultrathin frozen sections of lactating mouse mammary gland

1978 ◽  
Vol 36 (2) ◽  
pp. 46-47
Author(s):  
Jan Zarzycki ◽  
Joseph Szroeder
Keyword(s):  
Mammary Gland ◽  
Protein Denaturation ◽  
Chemical Constituents ◽  
Freeze Substitution ◽  
Electron Microscopic Examination ◽  
Mouse Mammary Gland ◽  
Electron Microscopic ◽  
Preparation Methods ◽  
Microscopic Studies ◽  
Ultrathin Frozen Sections

The mammary gland ultrastructure in various functional states is the object of our investigations. The material prepared for electron microscopic examination by the conventional chemical methods has several limitations, the most important are the protein denaturation processes and the loss of large amounts of chemical constituents from the cells. In relevance to this,one can't be sure about a degree the observed images are adequate to the realy ultrastructure of a living cell. To avoid the disadvantages of the chemical preparation methods,some autors worked out alternative physical methods based on tissue freezing / freeze-drying, freeze-substitution, freeze-eatching techniqs/; actually the technique of cryoultraraicrotomy,i,e.cutting ultrathin sections from deep frozen specimens is assented as a complete alternative method. According to the limitations of the routine plastic embbeding methods we were interested to analize the mammary gland ultrastructure during lactation by the cryoultramicrotomy method.

Sem and X-Ray Analysis of Renal and Biliary Calculi

1976 ◽  
Vol 34 ◽  
pp. 306-307
Author(s):  
R. J. Narconis ◽  
G. L. Johnson
Keyword(s):  
Chemical Constituents ◽  
Natural State ◽  
X Ray Diffraction ◽  
Chemical Methods ◽  
X Ray ◽  
Additional Dimension ◽  
Biliary Calculi ◽  
Calculus Formation ◽  
Scanning Electron

Analysis of the constituents of renal and biliary calculi may be of help in the management of patients with calculous disease. Several methods of analysis are available for identifying these constituents. Most common are chemical methods, optical crystallography, x-ray diffraction, and infrared spectroscopy. The application of a SEM with x-ray analysis capabilities should be considered as an additional alternative.A scanning electron microscope equipped with an x-ray “mapping” attachment offers an additional dimension in its ability to locate elemental constituents geographically, and thus, provide a clue in determination of possible metabolic etiology in calculus formation. The ability of this method to give an undisturbed view of adjacent layers of elements in their natural state is of advantage in determining the sequence of formation of subsequent layers of chemical constituents.

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