On the Concept of Rhinanthus angustifolius and Rhynchocorys elephas (Scrophulariaceae) in Iran

2006 ◽  
Vol 2 (2) ◽  
pp. 100-103
Author(s):  
Shahryar Saeidi Mehrvarz
Keyword(s):  
Rhinanthus Angustifolius

Long-term dynamics of the hemiparasite Rhinanthus angustifolius and its relationship with vegetation structure

2006 ◽  
Vol 17 (5) ◽  
pp. 637 ◽  
Author(s):  
Els Ameloot ◽  
Kris Verheyen ◽  
Jan P. Bakker ◽  
Yzaak De Vries ◽  
Martin Hermy
Keyword(s):  
Vegetation Structure ◽  
Rhinanthus Angustifolius

6′-O-benzoylshanzhiside methyl ester from Rhinanthus angustifolius subsp. Grandiflorus

1993 ◽  
Vol 33 (3) ◽  
pp. 623-625 ◽  
Author(s):  
Yoshio Takeda ◽  
Kumiko Tamura ◽  
Takashi Matsumoto ◽  
Hiromitsu Terao ◽  
Mamoru Tabata ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Rhinanthus Angustifolius

Long‐term dynamics of the hemiparasite Rhinanthus angustifolius and its relationship with vegetation structure

2006 ◽  
Vol 17 (5) ◽  
pp. 637-646 ◽  
Author(s):  
Els Ameloot ◽  
Kris Verheyen ◽  
Jan P. Bakker ◽  
Yzaak Vries ◽  
Martin Hermy
Keyword(s):  
Vegetation Structure ◽  
Rhinanthus Angustifolius

Impact of hemiparasitic Rhinanthus angustifolius and R. minor on nitrogen availability in grasslands

2008 ◽  
Vol 311 (1-2) ◽  
pp. 255-268 ◽  
Author(s):  
Els Ameloot ◽  
Greet Verlinden ◽  
Pascal Boeckx ◽  
Kris Verheyen ◽  
Martin Hermy
Keyword(s):  
Nitrogen Availability ◽  
Rhinanthus Angustifolius

scholarly journals Phytochemical Constituents and Biological Activities of the Unexplored Plant Rhinanthus angustifolius subsp. grandiflorus

2021 ◽  
Vol 11 (19) ◽  
pp. 9162
Author(s):  
Leilei Zhang ◽  
Gokhan Zengin ◽  
Gabriele Rocchetti ◽  
Ismail Senkardes ◽  
Jugreet B. Sharmeen ◽  
...  
Keyword(s):  
High Resolution Mass Spectrometry ◽  
Biological Activities ◽  
Radical Scavenging ◽  
Water Extract ◽  
The Other ◽  
Total Phenolic ◽  
Water Extracts ◽  
Extraction Solvent ◽  
Rhinanthus Angustifolius ◽  
Untargeted Profiling

In the present study, a total of 12 extracts of Rhinanthus angustifolius subsp. grandiflorus, an understudied hemiparasitic species, were obtained using different extraction techniques, namely, homogenizer-assisted extraction (HAE), maceration (MAC), soxhlet (SOX), infusion, and solvents (ethyl acetate, methanol, ethanol, and water), and were evaluated for their in vitro antioxidant and enzyme-inhibiting properties. Additionally, untargeted profiling based on high-resolution mass spectrometry targeted different phytochemical classes, namely, polyphenols, terpenoids, and alkaloids. The highest total phenolic and flavonoid contents were detected using methanol as the extraction solvent. Multivariate statistics following the untargeted profiling revealed that the extraction solvent had a hierarchically higher impact than the extraction method when considering the recovery of bioactive compounds. The methanolic extracts displayed the highest radical-scavenging antioxidant capacity, as provided by CUPRAC and FRAP assays. On the other hand, the water extracts (MAC and HAE) and the infusion extract showed the highest activity as metal chelators (25.66–27.51 mg EDTAE/g). Similarly, the water extract obtained by HAE and the infusion extract revealed the highest phosphomolybdenum activity (3.92 ± 0.14 and 3.71 ± 0.01 mmol TE/g, respectively). The different extracts also exhibited different enzyme inhibition potentials. For instance, HAE and MAC ethanolic extracts inhibited only α-amylase (0.69 ± 0.01 and 0.70 ± 0.01 mmol ACAE/g), while all the other extracts showed a dual inhibition against both carbohydrate-hydrolyzing enzymes tested (i.e., α-amylase: 0.07–0.69 mmol ACAE/g; α-glucosidase: 0.03–1.30 mmol ACAE/g). Nevertheless, the other extracts inhibited acetyl-, butyryl-cholinesterases, or both; MAC–water extract displayed no inhibition against the enzymes. Additionally, all the studied extracts were found to inhibit tyrosinase, ranging from 10.62 to 52.80 mg KAE/g. In general, the water extracts showed weaker inhibition towards the enzymes than the other extracts. This study demonstrated that R. angustifolius is an excellent source of natural antioxidants and enzyme inhibitors that could be further investigated and exploited for pharmaceutical purposes.

Sign in / Sign up

Export Citation Format

Share Document