Efficacy of leaf extract fractions of Glycyrrhiza glabra L. against downy mildew of cucumber (Pseudoperonospora cubensis)

2012 ◽  
Vol 134 (4) ◽  
pp. 755-762 ◽  
Author(s):  
Andrea Scherf ◽  
Jonas Treutwein ◽  
Hubertus Kleeberg ◽  
Annegret Schmitt
Author(s):  
Ozie Akbar Pratama ◽  
WORO ANINDITO SRI TUNJUNG ◽  
SUTIKNO SUTIKNO ◽  
BUDI SETIADI DARYONO

Abstract. Pratama OA, Tunjung WAS, Sutikno, Daryono BS. 2019. Bioactive compound profile of melon leaf extract (Cucumis melo L. ‘Hikapel’) infected by downy mildew. Biodiversitas 20: 3448-3453. Plants express specific secondary metabolites (phytoalexin) in response to infection. Downy Mildew which infects melon plants (Cucumis melo L. ‘Hikapel’) caused by Pseudoperonospora cubensis Rostovtsev. Hikapel is one of superior melon cultivar produced from research in the Laboratory of Genetics, Faculty of Biology, Universitas Gadjah Mada, Yogyakarta, Indonesia. Bioactive content of Hikapel melon leaf under normal condition and infected by Downy Mildew yet to be researched. This research aims to screen bioactive profile of Hikapel leaf extract that has potential as phytomedicine. Leaf extract is compared between healthy plants and infected by Downy Mildew. Dried melon leaf was powdered using mortar and pestle. Leaf powder was extracted using hexane solvent. Extract was analyzed using a Shimadzu GCMS-QP2010S. Analysis found useful compounds like phytol, methyl ricinoleate, methyl linoleate, methyl stearate, and 1-hexacosanol. with therapeutic activity such as antibacterial, antifungal, antioxidant, antiinflammatory, antidiuretic, antidiarrheal, lowering blood LDL-C level, insulin level booster, antiproliferative, and anticancer. Some bioactive compounds are only synthesized in Hikapel melon leaf under stress conditions.


Planta Medica ◽  
2014 ◽  
Vol 80 (10) ◽  
Author(s):  
LL Gauthier ◽  
C Simmler ◽  
DS Nikolic ◽  
R Van Breemen ◽  
SN Chen ◽  
...  

2020 ◽  
Vol 25 (2) ◽  
pp. 61-71
Author(s):  
Rajendra Gyawali ◽  
Rupesh Kumar Gupta ◽  
Sahana Shrestha ◽  
Rajendra Joshi ◽  
Prem Narayan Paudel

Alcoholic extracts of medicinal plants Cinnamomum zeylanicum Blume, Glycyrrhiza glabra L, and Azadirachta indica A. Juss were subjected to the evaluation of antioxidant properties and combined for the cream formulation. The antioxidant property was determined by using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assay and inhibition of lipid peroxidase assays. The cream formulation was designed using Minitab software and a central composite design was used to study the effect of dependent variables, steric acid and cetyl alcohol on the response variables such as, viscosity, pH, and spreadability. The phytochemical screening of extracts showed the presence of tannin, phenol, flavonoids, saponins, and alkaloids. Antioxidant properties of the extracts and their relative composition were found variable. Composition F3 (C. zeylanicum Blume: G. glabra L: A. indica A. Juss; 01: 02: 01) possessed the highest antioxidant capacity compared to other ratios. The cream prepared from this composition was found stable for pH, viscosity as well as antioxidant activity under normal condition (25) and accelerated condition (40 ). The cream with DPPH scavenging activity of 93.86 % at 15 µg/mL (IC50 8.58±0.30) and lipid peroxidase assay 90.93 % at 200 µg/mL (IC50 72.30±0.60) with pH 5.50 was found with a non-Newtonian positive thixotropic flow property. Parameters like pH, viscosity, and spreadability of the cream were within the acceptance range, and found stable and permeable


2016 ◽  
Vol 5 (2) ◽  
pp. 140-146 ◽  
Author(s):  
Aiyatullah Shah ◽  
Muzafar Ahmad Rather ◽  
Aabid Manzoor Shah ◽  
Saleem Mushtaq ◽  
Aehtesham Hussain ◽  
...  

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