scholarly journals EFFECT OF WOUNDING, AUXIN TYPE AND CONCENTRATION ON ROOTING OF LEMON VERBENA (Aloysia triphylla (L’HER.) BRITTON) PLANT

2012 ◽  
Vol 3 (12) ◽  
pp. 2927-2943 ◽  
Author(s):  
R. Fouda ◽  
H. Abdel-Kader ◽  
K. El-Hindi ◽  
Hekmat Massoud ◽  
Fatma Ibrahim
Keyword(s):  
Aloysia Triphylla ◽  
Lemon Verbena

scholarly journals Contribution to the study of the chemical composition of Lemon Verbena: Aloysia triphylla (Hert). Britt. cultivated in Morocco

2018 ◽  
Vol 3 (2) ◽  
pp. 321-331
Author(s):  
Abdeljalil Belkamel ◽  
Jamal Bammi ◽  
Valérie Janneot ◽  
Abdelfattah Belkamel ◽  
Youssef Dehbi ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Aloysia Triphylla ◽  
Lemon Verbena

scholarly journals Bioavailability of lemon verbena (Aloysia triphylla) polyphenols in rats: impact of colonic inflammation

2014 ◽  
Vol 111 (10) ◽  
pp. 1773-1781 ◽  
Author(s):  
Catherine Felgines ◽  
Didier Fraisse ◽  
Catherine Besson ◽  
Marie-Paule Vasson ◽  
Odile Texier
Keyword(s):  
Urinary Excretion ◽  
Intestinal Absorption ◽  
Sodium Sulphate ◽  
Hydroxycinnamic Acids ◽  
Colonic Inflammation ◽  
Beneficial Effects ◽  
Before And After ◽  
Phenylpropanoid Glycosides ◽  
Aloysia Triphylla ◽  
Lemon Verbena

Lemon verbena (Aloysia triphylla) infusion, a widely consumed herbal tea, contains significant amounts of polyphenols such as flavone diglucuronides and phenylpropanoid glycosides (mainly verbascoside). We have recently shown that lemon verbena infusion offers beneficial effects against dextran sodium sulphate (DSS)-induced colonic inflammation in rats. The present study aimed to evaluate the bioavailability and intestinal absorption of polyphenols derived from lemon verbena infusion in both healthy and colitic rats. For this purpose, lemon verbena infusion was given to rats ad libitum for 14 d, and then 4 % DSS was added to the infusion for 7 d. Before and after DSS administration, 24 h urinary excretion of polyphenols was determined. Flavones were excreted in the urine as conjugated aglycones, and their excretion was not significantly altered by colonic inflammation. Only trace amounts of verbascoside were excreted in the urine, but various metabolites (hydroxycinnamic acids) were detected. The urinary excretion of hydroxycinnamic acids, particularly that of caffeic acid, increased after DSS administration (P< 0·05). Only flavone aglycones (luteolin and diosmetin) were excreted in the faeces in small proportions (3·2 % of ingested flavones). Intestinal absorption of lemon verbena polyphenols was examined using an in situ intestinal perfusion model. Intestinal absorption of verbascoside and flavone diglucuronides did not significantly differ between the healthy and colitic rats. Collectively, these results show that intestinal absorption and urinary excretion of lemon verbena flavone diglucuronides were not altered by colonic inflammation, but that urinary excretion of hydroxycinnamic acids derived from verbascoside was affected in a colitic situation.

scholarly journals In vitro propagation of lemon verbena: a plant native of South America

2019 ◽  
Vol 41 ◽  
pp. e47105
Author(s):  
Marcos Vinícius Marques Pinheiro ◽  
Daniele Cristina Fontana ◽  
Jullie dos Santos ◽  
Matheus Milani Pretto ◽  
Gabrieli Cristina Vitalli de Azevedo ◽  
...  
Keyword(s):  
In Vitro Propagation ◽  
Culture Medium ◽  
Culture Media ◽  
In Vitro Regeneration ◽  
Dry Mass ◽  
Full Development ◽  
Growing Conditions ◽  
Aloysia Triphylla ◽  
Lemon Verbena

In vitro propagation increases the supply and commercialisation of products of interest. For this, optimising the growing conditions and the composition of the culture medium is crucial to benefit the full development of the plants. Thus, the objective was to evaluate the in vitro propagation of Aloysia triphylla on different culture media, with varying agar and sucrose concentrations. The experiment was conducted as a completely randomised design, 3×3×3 factorial scheme, with three culture media (MS, JADS and WPM), three sucrose concentrations (8, 10 and 12 g L-1) and three agar concentrations (15, 30 and 45 g L-1), with three replicates each and experimental units composed of one plant per replicate. After 25 days of cultivation, the fresh and dry mass of the plants, numbers of leaves, numbers of nodes, plant lengths, numbers of oxidised leaves, hyperhydricity and acclimatization percentages were evaluated. The WPM medium resulted in a reduced fresh mass, reflecting in the low hyperhydricity observed in the explants, and favoured the acclimatization of the plants. Thus, the WPM medium with sucrose (15 g L-1) and agar (12 g L-1) is recommended as the medium most suitable for the in vitro regeneration of Aloysia triphylla.

Increasing phenolic and aromatic compounds extraction and maximizing liking of lemon verbena (Aloysia triphylla) infusions through the optimization of steeping temperature and time

2019 ◽  
Vol 25 (8) ◽  
pp. 701-710 ◽  
Author(s):  
C Rocha ◽  
M Coelho ◽  
RC Lima ◽  
FM Campos ◽  
M Pintado ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Response Surface ◽  
Aromatic Compounds ◽  
Contrasting Effect ◽  
Quadratic Response ◽  
Hedonic Scale ◽  
High Level ◽  
Herbal Infusions ◽  
Aloysia Triphylla ◽  
Lemon Verbena

Herbal infusions are a new emerging trend among consumers, appearing in the market in many different forms. Due to intense competition, the commercial success of herbal infusions largely depends on flavour. The identification of the best combinations of steeping time and water temperature for the preparation of Aloysia triphylla infusions using a central composite design and response surface methodology was performed. The procedure aimed to maximize its antioxidant activity, phenolic and aromatic compounds, and consumers’ liking of the infusions. The antioxidant activity and phenolic content were evaluated using the 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid radical cation) method and the Folin–Ciocalteu procedure. The analysis of aromatic compounds was performed based on the method of terpenic compounds. Sensory evaluation encompassed overall liking using a 9-point hedonic scale. Antioxidant activity and extraction of most phenolic compounds was higher for longer steeping times and higher temperatures, with some presenting a contrasting effect due to degradation at higher temperatures for longer steeping times. Results for terpenic compounds showed similar contrasting patterns. Based on the quadratic response surface, it was possible to predict the maximum overall liking for lemon verbena infusions prepared by brewing for 6 min at 96 ℃. Under such conditions, extraction of bioactive compounds was kept at a high level, close to the maximum attainable, while reducing the extraction of bitter compounds. These results are considered of great importance for the development of premium infusions from organic lemon verbena leaves.

Composition of Lemon Verbena (Aloysia triphylla(L'Herit.) Britton) Oil of Moroccan Origin

1994 ◽  
Vol 6 (5) ◽  
pp. 523-526 ◽  
Author(s):  
Jamal Bellakhdar ◽  
Abdelkader Il Idrissi ◽  
Salvador Canigueral ◽  
José Iglesias ◽  
Roser Vila
Keyword(s):  
Aloysia Triphylla ◽  
Lemon Verbena

scholarly journals TISSUE CULTURE PROPAGATION OF LEMON VERBENA (Aloysia triphylla)

2011 ◽  
Vol 2 (6) ◽  
pp. 823-835
Author(s):  
M. Sharaf El-Din ◽  
Omaima Abd El-Kafie ◽  
H. Ahmed ◽  
Heba El-Banna
Keyword(s):  
Tissue Culture ◽  
Tissue Culture Propagation ◽  
Aloysia Triphylla ◽  
Lemon Verbena
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