scholarly journals Valencene-rich fraction from Vetiveria zizanioides exerts immunostimulatory effects in vitro and in mice

2021 ◽  
Vol 11 (8) ◽  
pp. 335
Author(s):  
Jyothis Mathew ◽  
VS Sunitha ◽  
SebastianJose Midhun ◽  
MA Sunil ◽  
EK Radhakrishnan
1930 ◽  
Vol 8 (01) ◽  
pp. 115-121
Author(s):  
Israwati Harahap ◽  
Elsie

Endophytic fungi are microorganisms living in healthy tissue of their host plants without causing disease. Endophytic fungi live in every plant, including Vetiveria zizanioides L. medicinal plant intracellulary and/or intercellulary. This plant was screened pharmacologically for antibacterial, antifungal, anticataleptic, analgesic and anti-inflammatory, rheumatism, anti oxidant and anti arthritic activity. This research aimed to isolation endophytic fungi from V. zizanioides L. and to screening their antimicrobial potency against microflora Escherichia coli, Staphylococcus aureus, and Candida albicans. Endophytic fungi isolation from V. zizanioides L. was done by surface sterilization method. A total of 33 isolates were recovered from 88 leaves and 88 root segments. Based on antimicrobial activitytest, most of the fungal extracts showed in vitro inhibition of microbes growth.


2020 ◽  
Vol 27 (6) ◽  
pp. 1475-1481
Author(s):  
Vidya Devanathadesikan Seshadri ◽  
P. Vijayaraghavan ◽  
Y.-O. Kim ◽  
H.-J. Kim ◽  
Abdullah Ahmed Al-Ghamdi ◽  
...  

2018 ◽  
Vol 23 (2) ◽  
Author(s):  
Andreia Volpato ◽  
Gabriela Galli ◽  
Gabriela Campigotto ◽  
Patricia Glombowsky ◽  
Roberto Santos ◽  
...  

Alphitobius diaperinus, popularmente conhecido como o cascudinho de aviário, é um inseto que se destaca na avicultura por ser vetor de patógenos e de difícil controle. Esta dificuldade está relacionada à contra-indicação na utilização de produtos químicos, já que enquanto as aves estão no aviário, grandes prejuízos podem ocorrer em consequência de elevadas infestações. Portanto, produtos naturais com potencial inseticida e larvicida poderiam ser usados, sem prejudicar as aves e sem deixar resíduo na carne do frango. Em virtude disso, neste estudo objetivou-se verificar o efeito dos óleos de Capim limão (Cymbopogon citratus), Cedro (Cedrus atlantica), Gengibre (Zingiber officinale), Gerânio (Pelargonium graveolens), Junípero (Juniperus communis), Palmarosa (Cymbopogon martinii), Tomilho (Thymus vulgaris) e Vetiver (Vetiveria zizanioides) sobre a suscetibilidade de A. diaperinus. Os testes foram realizados em triplicata com os óleos essenciais nas concentrações de 1, 5 e 10%. A fim de validar os testes, foram utilizados dois controles: sem tratamento e com diluente (Triton). O efeito inseticida do óleo de Capim limão não foi satisfatório, pois a mortalidade superior a 50% foi atingida 15 dias após início do teste. O óleo de Cedro não demostrou efeito significativo sobre adultos e larvas, pois os valores de mortalidade foram inferiores a 50% em todas as concentrações avaliadas. Os efeitos inseticidas e larvicidas não foram observados nos demais óleos nas concentrações testadas neste experimento (P>0,05).  Portanto, com base nos resultados dos testes in vitro podemos concluir que os óleos testados neste trabalho não apresentam efeitos inseticidas e larvicidas nas concentrações testadas, sobre A. diaperinus e, com isso, são inadequados para o controle alternativo desta praga.


1998 ◽  
Vol 43 (2) ◽  
pp. 134-137
Author(s):  
Malee NaNakorn ◽  
Srisom Surawattananon ◽  
Chalermchai Wongwattana ◽  
Kamolpun Namwongprom ◽  
Siriluck Suwannachitr

2010 ◽  
Vol 12 (4) ◽  
Author(s):  
Varadharajan Subhadradevi ◽  
Kuppusamy Asokkumar ◽  
Muthuswamy Umamaheswari ◽  
Andichettiarhirumalasia Sivashanmugam ◽  
Rajakannu Sankaranand

2020 ◽  
Vol 10 (1) ◽  
pp. 6-11
Author(s):  
Anisa Firmandanur Sinta ◽  
◽  
Wahyu Widoretno

The goal of this research was to evaluate the effect of colchicine on the formation and growth of shoot from explant crowns by in vitro, as well as to obtain polyploidy vetiver plant (Vetiveriazizanioides L. Nash). Induction of polyploidy vetiver plants carried out by culturing explant crowns on MS media supplemented by 2 mg.L-1 BAP and colchicine (0, 30, 60, 90, 120 mg.L-1) for three weeks. Explant and formed shoot regenerated on MS media containing 1 mg.L-1 NAA. The generated plantlets acclimatized on the growing media (cocopeat: husk charcoal: compost = 1: 1: 2). Plant ploidy level of the plants regenerated from treated explant estimated by chromosome counting in root tips. The effect of colchicine on media was able to induce polyploidy in vetiver plants. Five mixoploids were obtained from explant treated colchicine. The vetiver mixoploid plants obtained were 20% and 62.5% from colchicine 60 mg.L-1 and 90 mg.L-1, respectively. The vetiver mixoploid plants consist of diploid (2n=2x=20) and triploid cells (2n=3x=30) or diploid (2n=2x=20) and tetraploid (2n=4x=40). The addition of colchicine in concentrations above 30 mg.L-1 caused inhibition of shoot formation and growth, even a concentration of 120 mg.L-1 caused explant death. However, 30 mg.L-1 colchicine could increase the number of formed shoots, while only 60 mg.L-1 and 90 mg.L-1 could be induced the mixoploidy in the vetiver plant. The results showed that colchicine treatment could increase ploidicity in vetiver plants in vitro, but caused inhibition of shoot formation and growth.


2010 ◽  
Vol 12 (2) ◽  
Author(s):  
V. Subhadradevi ◽  
K. Asokkumar ◽  
M. Umamaheswari ◽  
A. T. Sivashanmugam ◽  
R. Sankaranand

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