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https://www.readbyqxmd.com/read/29146310/a-review-on-moringa-tree-and-vetiver-grass-potential-biorefinery-feedstocks
#1
REVIEW
Jegannathan Kenthorai Raman, Catarina M Alves, Edgard Gnansounou
Plants and derivatives have been explored for unlimited purposes by mankind, from crop cultivation for providing food and animal feed, to the use for cosmetics, therapeutics and energy. Moringa tree and vetiver grass features, capabilities and applications were explored through a literature review. The suitability of these plants for the bioenergy industry products is evidenced, namely for bioethanol, biogas and biodiesel, given the lignocellulosic biomass content of these plants and characteristics of moringa seed oil...
October 31, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29031880/assisted-phytoremediation-of-heavy-metal-contaminated-soil-from-a-mined-site-with-typha-latifolia-and-chrysopogon-zizanioides
#2
Alexander Kofi Anning, Ruth Akoto
Chemically assisted phytoremediation is fast gaining attention as a biotechnology to accelerate heavy metal removal from contaminated substrates, but how different chemical amendments affect the process remains an important research question. Here, bioaccumulation factor (BAF), translocation factor (TF), removal efficiency (RE) and uptake of Hg, As, Pb, Cu and Zn by cattail (Typha latifolia) and vetiver (Chrysopogon zizanioides) were quantified in a potted experiment to determine the effects of amendments on the phytoremediation success...
October 12, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29029183/evaluation-of-the-constituents-of-vetiver-oil-against-anopheles-minimus-diptera-culicidae-a-malaria-vector-in-thailand
#3
Rungarun Tisgratog, Chutipong Sukkanon, John P Grieco, Unchalee Sanguanpong, Kamlesh R Chauhan, Joel R Coats, Theeraphap Chareonviriyaphap
The development of resistance by mosquitoes to current synthetic compounds has resulted in reduced effectiveness of prevention and control methods worldwide. An alternative nonchemical based control tools are needed to be evaluated particularly plant-derived essential oils. Several components of vetiver oil have been documented as insect repellents. However, detailed knowledge of those components action against insect remains unknown. In this study, behavioral response of Anopheles minimus to four constituents of vetiver oil (valencene, terpinen-4-ol, isolongifolene, vetiverol) was evaluated by using the high-throughput screening assay system...
October 6, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28990146/a-preliminary-study-to-design-a-floating-treatment-wetland-for-remediating-acid-mine-drainage-impacted-water-using-vetiver-grass-chrysopogon-zizanioides
#4
Jeffrey D Kiiskila, Dibyendu Sarkar, Kailey A Feuerstein, Rupali Datta
Acid mine drainage (AMD) is extremely acidic, sulfate-rich effluent from abandoned or active mine sites that also contain elevated levels of heavy metals. Untreated AMD can contaminate surface and groundwater and pose severe ecological risk. Both active and passive methods have been developed for AMD treatment consisting of abiotic and biological techniques. Abiotic techniques are expensive and can create large amounts of secondary wastes. Passive biological treatment mainly consists of aerobic or anaerobic constructed wetlands...
October 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28930256/vetiver-essential-oil-in-cosmetics-what-is-new
#5
Pauline Burger, Anne Landreau, Marie Watson, Laurent Janci, Viviane Cassisa, Marie Kempf, Stéphane Azoulay, Xavier Fernandez
Background: Vetiver is a key ingredient for the perfume industry nowadays. However, with the constant and rapid changes of personal tastes, this appeal could vanish and this sector could decline quite quickly. New dissemination paths need to be found to tap this valuable resource. Methods: In this way, its potential use in cosmetics either as an active ingredient per se (with cosmeceutical significance or presenting antimicrobial activity) has hence been explored in vitro. Results: In this contribution, we demonstrated that vetiver essential oil displays no particularly significant and innovative cosmetic potential value in formulations apart from its scent already largely exploited...
June 16, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28866746/composting-plant-leachate-treatment-by-a-pilot-scale-three-stage-horizontal-flow-constructed-wetland-in-central-iran
#6
Reza Bakhshoodeh, Nadali Alavi, Pooya Paydary
Handling and treatment of composting leachate is difficult and poses major burdens on composting facilities. The main goal of this study was to evaluate usage of a three-stage, constructed wetland to treat leachate produced in Isfahan composting facility. A pilot-scale, three-stage, subsurface, horizontal flow constructed wetland, planted with vetiver with a flow rate of 24 L/day and a 15-day hydraulic retention time, was used. Removal of organic matter, ammonia, nitrate, total nitrogen, suspended solids, and several heavy metals from Isfahan composting facility leachate was monitored over a 3-month period...
October 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28772482/photocatalytic-degradation-of-organic-dye-under-uv-a-irradiation-using-tio2-vetiver-multifunctional-nano-particles
#7
Le Thi Song Thao, Trinh Trung Tri Dang, Wilawan Khanitchaidecha, Duangdao Channei, Auppatham Nakaruk
The properties and photocatalytic performance of anatase nanoparticles of pure TiO₂ and a core-shell structure of TiO₂ on calcined vetiver grass leaves have been compared. Samples were fabricated by sol-gel and heating at 450 °C for 5h.The comparison was based on data for X-ray diffraction(XRD), UV-Vis spectrophotometry, photoluminescence, transmission electron microscopy, specific surface area measurement, pore volume assessment, and methylene blue degradation testing. The results showed that the pure TiO2 consisted of agglomerated equiaxed nanoparticles of individual grain sizes in the range 10-20 nm...
January 30, 2017: Materials
https://www.readbyqxmd.com/read/28741991/meira-siamensis-sp-nov-a-novel-anamorphic-ustilaginomycetous-yeast-species-isolated-from-the-vetiver-grass-phylloplane
#8
Savitree Limtong, Pirapan Polburee, Thunnicha Chamnanpa, Pannida Khunnamwong, Pitayakon Limtong
Two strains, DMKU-LV83 and DMKU-LV85, of a novel yeast species were isolated from the phylloplane of vetiver grass collected in Thailand by plating of leaf washings. Analysis of the sequences of the D1/D2 region of the large subunit (LSU) rRNA gene showed that the two strains represent a single novel species and most closely related to Meira miltonrushii. However, the novel species differed from the type strain of M. miltonrushii (MCA 3882T) by 5.5 % nucleotide substitutions in the D1/D2 region and 8.9 % nucleotide substitutions in the ITS region...
July 26, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28704693/investigation-of-arsenic-accumulation-and-biochemical-response-of-in-vitro-developed-vetiveria-zizanoides-plants
#9
Shraddha Singh, Suvarna Sounderajan, Kiran Kumar, D P Fulzele
Vetiver grass (Vetiveria zizanoides L. Nash) is found to be a suitable candidate for the phytoremediation of heavy metals. An investigation of arsenic (As) accumulation, translocation and tolerance was conducted in V. zizanoides plantlets upon exposure to different concentrations of arsenic (10, 50, 100 and 200µM) for 7 and 14 d. V. zizanoides plants were found effective in remediation of As, maximum being at 200µM after 14 d of exposure. The results of TBARS and photosynthetic pigments demonstrated that plants did not experience significant toxicity at all the concentrations of As after 7 days, however an increase in their level was found after 14 d...
July 10, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28597437/salt-tolerance-of-a-wild-ecotype-of-vetiver-grass-vetiveria-zizanioides-l-in-southern-china
#10
Wan-Gou Liu, Jin-Xiang Liu, Mei-Ling Yao, Qi-Fu Ma
BACKGROUND: Vetiver grass (Vetiveria zizanioides L.) is widely used in more than 120 countries for land management (e.g. rehabilitation of saline lands). A wild ecotype of vetiver grass was found in southern China in the 1950s, but little is known about its adaptability to saline stress. For the purpose of understanding its tolerance to salinity as well as corresponding tolerance mechanisms, in a greenhouse with natural lighting, seedlings were grown in culture solutions and subjected to a range of NaCl concentrations for 18 days...
December 2016: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28419293/expression-and-enzyme-activity-of-catalase-in-chilo-suppressalis-lepidoptera-crambidae-is-responsive-to-environmental-stresses
#11
Yanhui Lu, Qi Bai, Xusong Zheng, Zhongxian Lu
Catalase (CAT) is an important antioxidant enzyme that protects organisms against oxidative stresses by eliminating hydrogen peroxide. In this study, we cloned and characterized a full-length cDNA of CAT from Chilo suppressalis (CsCAT) and examined the influence of environmental stresses on CsCAT expression and enzyme activity. The cDNA contains a 1659-bp open reading frame encoding a polypeptide of 553 amino acids most closely related (90.14%) to Papilio polytes catalases. The CsCAT was expressed in all developmental stages with the highest expression in the fat body, and the CsCAT enzyme activity closely mirrored its observed mRNA expression patterns...
August 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28318794/ethylenediaminedisuccinic-acid-edds-enhances-phytoextraction-of-lead-by-vetiver-grass-from-contaminated-residential-soils-in-a-panel-study-in-the-field
#12
Ramesh Attinti, Kirk R Barrett, Rupali Datta, Dibyendu Sarkar
Phytoextraction is a green remediation technology for cleaning contaminated soils. Application of chelating agents increases metal solubility and enhances phytoextraction. Following a successful greenhouse experiment, a panel study under field weather elucidated the efficiency of the chelating agent ethylenediaminedisuccinic acid (EDDS) on phytoextraction of lead (Pb) by vetiver grass, a hyperaccumulator of Pb, and a nonaccumulator fescue grass from residential soils contaminated with Pb-based paint from Baltimore, MD and San Antonio, TX...
June 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28289987/biochar-based-constructed-wetlands-to-treat-reverse-osmosis-rejected-concentrates-in-chronic-kidney-disease-endemic-areas-in-sri-lanka
#13
B C L Athapattu, T W L R Thalgaspitiya, U L S Yasaratne, Meththika Vithanage
The objectives were to investigate the potential remedial measures for reverse osmosis (RO) rejected water through constructed wetlands (CWs) with low-cost materials in the media established in chronic kidney disease of unknown etiology (CKDu) prevalent area in Sri Lanka. A pilot-scale surface and subsurface water CWs were established at the Medawachchiya community-based RO water supply unit. Locally available soil, calicut tile and biochar were used in proportions of 81, 16.5 and 2.5% (w/w), respectively, as filter materials in the subsurface...
March 13, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/27748626/phytoremediation-of-palm-oil-mill-secondary-effluent-pomse-by-chrysopogon-zizanioides-l-using-artificial-neural-networks
#14
Negisa Darajeh, Azni Idris, Hamid Reza Fard Masoumi, Abolfazl Nourani, Paul Truong, Shahabaldin Rezania
Artificial neural networks (ANNs) have been widely used to solve the problems because of their reliable, robust, and salient characteristics in capturing the nonlinear relationships between variables in complex systems. In this study, ANN was applied for modeling of Chemical Oxygen Demand (COD) and biodegradable organic matter (BOD) removal from palm oil mill secondary effluent (POMSE) by vetiver system. The independent variable, including POMSE concentration, vetiver slips density, and removal time, has been considered as input parameters to optimize the network, while the removal percentage of COD and BOD were selected as output...
May 4, 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27676594/decarboxylation-facilitated-by-carbocation-formation-and-rearrangement-during-steam-distillation-of-vetiver-oil
#15
Henry B Wedler, T Newman, Dean J Tantillo
Density functional theory (DFT) calculations are used to probe the validity of mechanistic proposals for the conversion of isozizanoic acid to 12-norisoziza-5-ene, a reaction that occurs during steam distillation of vetiver oil. While this conversion corresponds overall to a simple decarboxylation, a multistep mechanism involving carbocation intermediates is supported by the computational results.
October 28, 2016: Journal of Natural Products
https://www.readbyqxmd.com/read/27662861/vetiver-plantlets-in-aerated-system-degrade-phenol-in-illegally-dumped-industrial-wastewater-by-phytochemical-and-rhizomicrobial-degradation
#16
Tanapon Phenrat, Pimpawat Teeratitayangkul, Isarawut Prasertsung, Rattapoohm Parichatprecha, Peerapong Jitsangiam, Narong Chomchalow, Siriwan Wichai
This research evaluated the feasibility of using vetiver plantlets (Vetiveria zizanioides (L.) Nash) on a floating platform with aeration to degrade phenol (500 mg/L) in illegally dumped industrial wastewater (IDIWW). The IDIWW sample was from the most infamous illegal dumping site at Nong Nae subdistrict, Phanom Sarakham district, Chachoengsao province, Thailand. Laboratory results suggested that phenol degradation by vetiver involves two phases: Phase I, phytopolymerization and phyto-oxidation assisted by root-produced peroxide (H2O2) and peroxidase (POD), followed by phase II, a combination of phase I with enhanced rhizomicrobial degradation...
May 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27662856/tetracycline-uptake-and-metabolism-by-vetiver-grass-chrysopogon-zizanioides-l-nash
#17
Aparupa Sengupta, Dibyendu Sarkar, Padmini Das, Saumik Panja, Chinmayi Parikh, Dilrukshi Ramanathan, Susan Bagley, Rupali Datta
Environmental contamination by antibiotics not only perturbs the ecological balance but also poses a risk to human health by promoting the development of multiantibiotic-resistant bacteria. This study focuses on identifying the biochemical pathways associated with tetracycline (TC) transformation/degradation in vetiver grass that has the potential to be used as a biological remediation system in TC-contaminated water sources. A hydroponic experimental setup was used with four initial TC concentrations (0, 5, 35, 75 ppm), and TC uptake was monitored over a 30-day period...
December 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27491701/arbuscular-mycorrhizal-fungi-in-the-growth-and-extraction-of-trace-elements-by-chrysopogon-zizanioides-vetiver-in-a-substrate-containing-coal-mine-wastes
#18
Edenilson Meyer, Diana Marcela Morales Londoño, Rafael Dutra de Armas, Admir José Giachini, Márcio José Rossi, Shantau Camargo Gomes Stoffel, Cláudio Roberto Fonsêca Sousa Soares
Vetiver (Chrysopogon zizanioides) is a fast-growing, high biomass producing plant employed for environmental rehabilitation. The study evaluated the effects of arbuscular mycorrhizal fungi (AMF) on the growth and trace element phytoextracting capabilities of vetiver in a substrate containing coalmine wastes in Southern Brazil. AMF included Acaulospora colombiana, Acaulospora morrowiae, Acaulospora scrobiculata, Dentiscutata heterogama, Gigaspora margarita, and Rhizophagus clarus. Among those, A. colombiana, G...
February 2017: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27438875/phytostabilization-potential-of-two-ecotypes-of-vetiveria-zizanioides-in-cadmium-contaminated-soils-greenhouse-and-field-experiments
#19
Theerawut Phusantisampan, Weeradej Meeinkuirt, Patompong Saengwilai, John Pichtel, Rattanawat Chaiyarat
Soil contamination by cadmium (Cd) poses a serious environmental and public health concern. Phytoremediation, i.e., the use of plants to remove contaminants from soil, has been proposed for treatment of Cd-contaminated ecosystems. In this study, we demonstrated the potential of Vetiveria zizanioides, commonly known as vetiver, to serve as an effective phytoremediation agent. Two ecotypes, i.e., India and Sri Lanka, were grown in greenhouse pots and in the field. Soils were amended with cow manure, pig manure, bat manure, and an organic fertilizer...
October 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27393941/modeling-bod-and-cod-removal-from-palm-oil-mill-secondary-effluent-in-floating-wetland-by-chrysopogon-zizanioides-l-using-response-surface-methodology
#20
Negisa Darajeh, Azni Idris, Hamid Reza Fard Masoumi, Abolfazl Nourani, Paul Truong, Nor Asrina Sairi
While the oil palm industry has been recognized for its contribution towards economic growth and rapid development, it has also contributed to environmental pollution due to the production of huge quantities of by-products from the oil extraction process. A phytoremediation technique (floating Vetiver system) was used to treat Palm Oil Mill Secondary Effluent (POMSE). A batch study using 40 L treatment tanks was carried out under different conditions and Response Surface Methodology (RSM) was applied to optimize the treatment process...
October 1, 2016: Journal of Environmental Management
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