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Journal articles on the topic "Marigold"
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Fonseca, Maira Christina Marques, Maria Aparecida Nogueira Sediyama, Filipe Pereira Giardini Bonfim, et al. "Lettuce and marigold intercropping: crops productivity and marigold's flavonoid content." Ciência Rural 46, no. 9 (2016): 1553–58. http://dx.doi.org/10.1590/0103-8478cr20150712.
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ABSTRACT: Intercropping of vegetables and medicinal plants might produce favorable interactions for both crops, resulting in increased production and profit per unit area. It is known that active compounds can change because of several factors, including the cropping system. Therefore, the goal of this study was to evaluate the effect of intercropping of lettuce and marigold on the productivity of these crops and on the flavonoid content of marigold flowers. The experiment was conducted in the experimental area of EPAMIG in Oratorios-MG. Treatments consisted of lettuce + marigolds intercropping between rows, lettuce + marigold intercropping between plants, and monocultures of each species. Spacing was 0.3x0.3m. The experimental design consisted of randomized blocks with ten repetitions. Harvest of lettuce and marigold flowers started 45 days after transplantation (DAT) and extended up to 72 DAT for marigolds. Lettuce and marigold intercropping appears feasible because lettuce production did not differ between the monoculture and intercropped cultivations, and marigold productivity was higher when intercropped with lettuce. No change in the flavonoid (active chemicals of medicinal interest) content in the floral capitula of marigolds was observed.
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ZHANG, Huali, Lina SONG, Lifang LI, et al. "Interspecific hybridization with African marigold (Tagetes erecta) can improve flower-related performance in French marigold (T. patula)." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 50, no. 4 (2022): 12808. http://dx.doi.org/10.15835/nbha50312808.
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The present research was intended for interspecific hybridization between two male sterile African marigold lines and six self-lines of French marigolds. The results show that as indicated by the full seed number per capitulum, the pollen amount of French marigold pollen influenced the authentic compatibilities reckoned for the 10 cross combinations configured to some amount. Based on the field performance of these interspecific hybrids, it is known that the parental French marigold’s single-petaled and silvery flower type may well be improved to a heavy-petaled type while the flower colour remains the same or changes to a lighter version with the same hue. Furthermore, the progeny of certain crossings exceeded the male parents in terms of growth, leaf, and flower-related features, particularly plant height, crown breadth, flower number per plant, and ligulate flower quantity. The most remarkable finding was that, compared to the parental French marigold, most of the hybrid combinations' progeny could blossom 0-11 days earlier. Finally, we identified two excellent hybrid combinations that may be used as a reference for future breeding and commercialization of new marigold varieties.
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Wu, Wentao. "Marigold (Tagete erecta): An Effective Meloidogyne incognita Trap Plant." International Journal of Agriculture and Biology 25, no. 02 (2021): 271–76. http://dx.doi.org/10.17957/ijab/15.1666.
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Root-knot nematodes (Meloidogyne spp.) are soil-borne pathogens that can cause severe damage to agricultural production. The most common approaches to prevent root-knot nematode infections are based on crop rotation with non-host plants, use of chemical insecticides, biological control methods, and use of nematode-antagonistic or trap plants. Marigolds (Tagetes erecta) are used as nematode-killing plants, but there is controversy over the mechanism through which they control root-knot nematodes. This study confirmed that marigold root-exudates are lethal to root-knot nematodes, illustrated that marigolds act as trap plants for root-knot nematodes when planted close to nematode host plants such as tomato. We investigated the rates of infection and development of nematode larvae injected into the marigold root system to evaluate whether marigolds could act as a non-host plant for root-knot nematodes. We found that aqueous solutions of marigold root-exudates showed strong lethal and inhibitory effects on sec-stage juveniles and eggs of root-knot nematodes. Marigold roots secreted substances that attracted nematodes from the surrounding environment. Furthermore, marigold root cells contained substances that had a strong inhibitory effect on the development of root-knot nematodes, resulting in diapause in nematodes, and inhibition of further infection. Herein we report a preliminary exploration of the antagonistic mechanism in marigolds for controlling the growth and development of root-knot nematodes. Our research provides basis for promoting the use of marigold for the control of nematodes as an important part of sustainable cropping strategies that rely on biological pest control. © 2021 Friends Science Publishers
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Whankaew, Sukhuman, Supaporn Hasthanasombut, Ratchadaporn Thaikert, Piengtawan Tappiban, Duncan R. Smith, and Kanokporn Triwitayakorn. "Molecular characterization and genetic relationship of marigolds (Tagetes spp.) based on simple sequence repeat markers." Plant Genetic Resources 12, no. 3 (2014): 317–22. http://dx.doi.org/10.1017/s1479262114000100.
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In this study, simple sequence repeats (SSRs) specific to marigold were developed using the inter-SSR technique and a SSR-enriched genomic DNA library. In addition, SSRs derived from sunflower (Helianthus annuus) were also tested for transferability to marigold. In total, 38 polymorphic markers with 112 observed alleles were identified in 20 African marigolds (Tagetes erecta L.) consisting of 14 commercial varieties and six Thai landraces, and six French marigolds (Tagetes patula L.). The number of alleles per locus ranged from 2 to 7. The averages of expected and observed heterozygosities were 0.48 and 0.32, respectively. Polymorphic information content values ranged from 0.10 to 0.71, and resolving power (Rp) values ranged from 0.23 to 2.77. The SSRs were successfully applied to the differentiation of the 26 marigold samples into clusters of African commercial varieties, Thai landraces and French marigold. The genetic relationship analysis revealed that the African commercial varieties were more closely related to the Thai landraces than to the French marigold. The results of the study indicate that the SSRs developed are effective for genetic diversity analysis, species classification and individual identification.
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Ploeg, Antoon T. "Effects of Selected Marigold Varieties on Root-knot Nematodes and Tomato and Melon Yields." Plant Disease 86, no. 5 (2002): 505–8. http://dx.doi.org/10.1094/pdis.2002.86.5.505.
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Field experiments were conducted at two sites in California to evaluate the effects of marigold genotypes Tagetes patula var. Single Gold and Tagetes hybrid var. Polynema on Meloidogyne incognita infestation, root-galling, and yields of tomato grown immediately after marigold. Marigold cultivars were compared with a fallow control and with methyl iodide fumigation of soil prior to cultivation of M. incognita-susceptible and M. incognita-resistant tomato. Tomato yields after marigold were ca. 50% higher than after fallow. Marigold Single Gold consistently reduced nematode infestation and galling of tomato roots. Results were not significantly different between methyl iodide fumigation or marigold Single Gold at one site, but methyl iodide outperformed both marigold varieties at the other site. At one site, where melon var. Durango was grown during spring and summer of the year following cultivation of marigolds Single Gold and Polynema, melon yield increases of 95 and 45%, respectively, were still obtained.
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Rita, Wismalinda, Neli Definiati, Rita Zurina, Edi Susilo, and Parwito. "Study of Morphology, Nutrition and Bioactive Compounds at Two Accessions Marigold (Tagetes Erecta) in Kepahiang Regency." International Journal of Integrative Sciences 3, no. 11 (2024): 1181–90. https://doi.org/10.55927/ijis.v3i11.12211.
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Marigold (Tagetes erecta) is an ornamental herbaceous and medicinal plant that is easily cultivated, so many are found at various heights, such as in Kepahiang Bengkulu regency, Indonesia. In addition, marigolds contain nutrients and bioactive compounds that have yet to be fully utilized. This study aims to identify the morphology, nutrients and bioactive compounds of marigold flowers in Kepahiang district of Bengkulu, Indonesia. The study was conducted using a purposive sampling survey method by conducting non-experimental descriptive observations. Sampling locations were conducted around Kepahiang regency. The variables observed were morphological identification, nutrient content and bioactive compounds. Two accessions are found: marigold flowers with small petals of orange and marigold flowers with small petals of yellow. Orange marigold flowers with small petals-shaped protein (10.51%) are higher than the small yellow marigold (9.49%), while the protein content of leaves (5.96%) is lower than the protein marigold flowers. Small-sized orange Petals marigold flowers have a higher carotenoid content (166.41 mg/kg) than small-sized yellow petals flowers (85.89 mg/kg). But compared to flowers, marigold leaves have a higher chlorophyll content (246.93 mg/kg). Marigold flower with orange petals in a small shape has the best nutritional and bioactive compounds content for poultry feed
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Chauhan, Ajeet Singh, Chiu-Wen Chen, Reeta Rani Singhania, et al. "Valorizations of Marigold Waste for High-Value Products and Their Industrial Importance: A Comprehensive Review." Resources 11, no. 10 (2022): 91. http://dx.doi.org/10.3390/resources11100091.
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The municipal authorities in developing nations face serious challenges in marigold flower garbage management. The primary issue is that they never are reused after prayers. Flower waste of Tagetes erecta, T. patula, and Calendula officinalis L. are commonly used for carotenoid and flavonoid extractions and, subsequently, used for incense stick and biogas production. Marigold plants are also used for phytoremediation during their growth stage. The lutein industry is booming due to its increasing market demand, expected to reach ~2121.2 billion tons by 2022, where marigolds are a major contributor globally. The process of isolating lutein from saponified marigold oleoresin yields a product with 70–85% purity. Lutein is a major xanthophyll (70–88%) of marigold petals, and a maximum of 21.23 mg/g of lutein was extracted. This review discusses the properties of selective marigold species, their compositions, and the extraction of different flavonoids and carotenoids, especially lutein. Moreover, different extraction methods of marigold lutein, the collection of marigold waste, and their subsequent utilization to derive several value-added products are discussed. Among physical treatments, ultrasonic-assisted extraction and enzymatic treatment with 5% solids loading were the maximum-yielding methods.
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Burnett, Stephanie E., Marc W. van Iersel, and Paul A. Thomas. "Medium-incorporated PEG-8000 Reduces Elongation, Growth, and Whole-canopy Carbon Dioxide Exchange of Marigold." HortScience 41, no. 1 (2006): 124–30. http://dx.doi.org/10.21273/hortsci.41.1.124.
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French marigold (Tagetes patula L. `Boy Orange') was grown in a peat-based growing medium containing different rates (0, 15, 20, 30, 42, or 50 g·L–1) of polyethylene glycol 8000 (PEG-8000) to determine if PEG-8000 would reduce seedling height. Only 28% to 55% of seedlings treated with 62, 72, or 83 g·L–1 of PEG-8000 survived, and these treatments would be commercially unacceptable. Marigolds treated with the remaining concentrations of PEG-8000 had shorter hypocotyls, and were up to 38% shorter than nontreated controls at harvest. Marigold cotyledon water (ψw), osmotic (ψs), and turgor (ψp) potentials were significantly reduced by PEG-8000, and ψp was close to zero for all PEG-treated seedlings 18 days after seeding. Whole-plant net photosynthesis, whole-plant dark respiration, and net photosynthesis/leaf area ratios were reduced by PEG-8000, while specific respiration of seedlings treated with PEG-8000 increased. Marigolds treated with concentrations greater than 30 g·L–1 of PEG-8000 had net photosynthesis rates that were close to zero. Fourteen days after transplanting, PEG-treated marigolds were still shorter than nontreated seedlings and they flowered up to 5 days later. Concentrations of PEG from 15 to 30 g·L–1 reduced elongation of marigold seedlings without negatively affecting germination, survival, or plant quality. It appears that marigold seedlings were shorter because of reduced leaf ψp and reductions in net photosynthesis.
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Bunpalwong, Manasanan, Meennapa Rukhiran, and Paniti Netinant. "Improving marigold agriculture with an IoT-driven greenhouse irrigation management control system." Bulletin of Electrical Engineering and Informatics 12, no. 6 (2023): 3817–25. http://dx.doi.org/10.11591/eei.v12i6.6300.
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In recent years, the internet of things (IoT) has been used to support the automated farming functions of greenhouses, preventing insects and pests, and stabilizing unsuitable weather and light conditions. Concerning an innovative IoT in agriculture, there are still a number of obstacles to enhancing greenhouses' effectiveness. This study presents the architecture, algorithms, and implementation of an IoT-based automated irrigation control system with temperature and humidity sensors. The system monitors relative humidity parameters using an internet-connected relay that controls irrigation. The relative humidity level is controlled by a 50% threshold. The effectiveness of marigold cultivation can be evaluated by means of marigold stem height, size, number of marigold flowers, and weight of the marigold harvest. The stimulating growth of marigolds is affected in every way by the differences between the proposed IoT system in a greenhouse and the conventional growing method outdoors. This contribution research validates the experimental findings to ensure that the air environment monitoring and irrigation control system consistently increases marigold yield.
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Sullivan, Cheryl Frank, Bruce L. Parker, and Margaret Skinner. "Marigold, Tagetes patula, a Trap Plant for Western Flower Thrips, Frankliniella occidentalis, in Ornamental Bedding Plants Under Controlled Greenhouse Conditions." Insects 16, no. 3 (2025): 319. https://doi.org/10.3390/insects16030319.
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Western flower thrips (WFT), Frankliniella occidentalis (Pergande) [Thysanoptera: Thripidae], is a destructive pest of greenhouse ornamentals. Flowering yellow marigolds, Tagetes patula (L.) [Asterales: Asteraceae], have been shown to be attractive to WFT, implicating their suitability as a trap plant. However, functionality may vary in part due to crop variety, the growth stage of the crop in which the marigold trap plant is deployed and whether or not the crop plants have flowers present. The attractiveness of yellow marigolds was tested within several varieties of mature, flowering ornamental bedding plants that were flowering or had their flowers removed: Calibrachoa spp. Petunia spp. Verbena spp., Osteospermum spp., Impatiens haekeri and other marigolds. Trials were conducted in cages under controlled greenhouse conditions for six weeks. The effectiveness of orange vs. yellow marigolds as a trap plant was also assessed. The results showed that WFT were attracted to flowering marigolds and, over time, were present in greater numbers on these than crop plants for all crop species and varieties tested at varying levels of significance. Yellow marigold trap plants were the least effective when deployed within other marigold varieties. In crops with flowers, it took up to five weeks for the number of WFT on trap plants to surpass numbers on crop plants. In contrast, in crop varieties with their flowers removed, trap plants attracted WFT earlier, within one to two weeks, and harbored them in greater numbers over time. Orange, flowering marigolds were a less effective trap plant compared to yellow marigolds. These results confirm that flowering yellow marigolds are attractive to WFT and have potential as a trap plant in greenhouse ornamentals, particularly when crop plants do not have flowers.
Dissertations / Theses on the topic "Marigold"
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Myles, Timothy G., and Bradley F. Binder. "The Desert Marigold Moth." University of Arizona (Tucson, AZ), 1990. http://hdl.handle.net/10150/609120.
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The moth Schinia miniana (Grote) of Lepidoptera family Noctuidae is reported on Desert Marigold (Baileya multiradiata) of plant family Compositae. Characteristics of the plant and the life history of the insect are discussed. Principal features of this plant-insect interaction are described and illustrated.
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Stubbs, Victoria. "The use of Tagetes erecta and Pasteuria penetrans within crop rotations for the control of Meloidogyne spp. in microplots in Zimbabwe." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312561.
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Van, Scheltinga Mariska. "Extraction of lutein from marigold flower with supercritical carbon dioxide / Mariska van Scheltinga." Thesis, North-West University, 2005. http://hdl.handle.net/10394/982.
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The objective of the study was to extract lutein, an active component of marigold
flower (Tagetes erecta) by means of supercritical carbon dioxide (sc-C02).
Extractions on freeze-dried marigold petals were performed with a laboratory
scale supercritical fluid extractor (LECO TFEIM2000) of highly advanced design
and performance. Extracts were analysed for lutein by high-performance liquid
chromatography (Agilent Technology 1100 Series HPLC System) using a
calibration line constructed by virtue of solutions of a commercially available
standard (Indofine Chemical Company, Inc.).
The conditions at which a maximum yield of lutein is obtained (52°C, 400 bar, 60
min) were determined by performing runs according to a statistical design and
processing the data by computer assisted surface response analysis. A mass
balance proved effective recovery of the extracted material from the supercritical
extractor.
The density of sc-C02 was found to be the variable which controls the extraction
as the fluid becomes capable to chemically dissolve lutein once its density (and
thus solvent strength) takes on liquid-like values (between 0.8 and 1.0 g/mL).
The large negative value of the volume of activation ∆*V relates to the decrease
in volume associated with melting and solvation of lutein while it dissolves in the
highly compressed supercritical fluid.
A function combining several process variables into a dimensionless quantity
was used successfully to mathematically describe the extraction process.<br>Thesis (M.Sc. (Pharmaceutical Chemistry))--North-West University, Potchefstroom Campus, 2006.
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Rosloski, Sarah M. "Use of marigold and Mexican sunflower to control nematode parasites of tomato in Namibia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ40436.pdf.
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Duarte, Rosa Lucia Rocha. "Culture of varieties of specie Tagetes erecta in the Plated of Apodi, Limoeiro do Norte, CearÃ, Brazil in different densities and time of plantation." Universidade Federal do CearÃ, 2007. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1349.
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A espÃcie Tagetes erecta Linn, vulgarmente conhecida como Tagetes, à nativa do MÃxico. Suas flores sÃo cultivadas, colhidas e processadas numa importante escala industrial como fonte de alto valor de corante, da famÃlia dos carotenÃides. A forma de utilizaÃÃo do Tagetes à como pÃtalas desidratadas e concentrados, que sÃo usados como aditivos na alimentaÃÃo para melhoria da pigmentaÃÃo de pele e ovos de galinhas. Conduziu-se um experimento na Chapada do Apodi (CE), nos meses de junho, julho, agosto, setembro, outubro e novembro de 2003. O delineamento utilizado foi o de blocos ao acaso em esquema fatorial (6x5x4), sendo seis Ãpocas, cinco tipos (trÃs hÃbridos e duas variedades) de Tagetes com quatro espaÃamentos de plantio (0,10 m; 0,15 m; 0,20 m e 0,25 m) nas seguintes densidades de (200.000; 133.333; 100.000; 80.000), respectivamente, com trÃs repetiÃÃes por tratamento. A variedade V1 (hÃbrido F150011) foi em mÃdia a mais produtiva, com 25,47 t/ha. Em todas as Ãpocas de plantio, o hÃbrido F150011 foi o que mostrou o maior nÃmero de flores por hectare e seguidas das variedades V4 (A5893 P) e V5 (A0861P) com o nÃmero de flores por hectare de (0,48 milhÃes de flores/ha e 0,53 milhÃes de flores/ha). A maior altura foi encontrada na variedade V2(F1 80447) com mÃdia de 88,92 cm. O hÃbrido F1 50011 obteve o maior diÃmetro mÃdio de flor (7,06 cm). Diante disso, constatou-se que, quanto menor o nÃmero de flores, maior o seu peso individual, com conseqÃente maior produÃÃo de pÃtalas por flor. O hÃbrido F1 50011 foi superior sobre as demais com o maior nÃmero de flores/ha em todas as densidades de plantio estudadas. Verificou-se que na 5 e 6 Ãpoca de plantio (perÃodo chuvoso) os espaÃamentos 20cm e 25cm entre plantas, mostraram-se mais adequado para o hÃbrido F150011 (20,22 t/ha e 19,78 t/ha) e no perÃodo seco ( 1Â, 2 e 3 Ãpocas) as maiores produÃÃes de flores, para a mesma variedade, foram obtidas nas densidades maiores (200.000 e 133.333 plantas/ha) nos espaÃamentos 10 e 15 cm. Este trabalho objetivou avaliar, nas condiÃÃes climÃticas do semi-Ãrido nordestino, diferentes variedades hÃbridas e de polinizaÃÃo aberta de Tagetes, em diferentes densidades e Ãpocas de plantio, para obtenÃÃo de maior produtividade de flores.<br>The specie Tagetes erecta, commonly known as marigold, it is native of Mexico. The flowers are cultivated, picked and processed in an important one scale industrial as source of
high color value, of the family of the caroteno
ids. The form of use of the marigold is as dehydrated petals and concentrated, that are used as addictive in the feeding for improvement of the skin pigmentation and eggs of poultry. An experiment field conditions was carried out
from June to November 2003, in the Plated of Apodi, Limoeiro do Norte, CearÃ, Brazil. The treatments consisted of three hybrid varieties and two varieties of open pollination, constituting the plots, in four planting
densities (0,10m; 0.15; 0,20m and 0,25m) x 0,50m,
constituted the split-plot and evaluated in si
x planting, with three repetitions. The variety V1
(hybrid F150011) it was on average the most productive, with 25,47 t /ha. In all of the planting period, the variety F1 50011 presented the largest number
of flowers for hectare and the variedades V4 (A5893 P) and V5 (A0861P) presented the smallest number of flowers for
hectare (0,48 million flowers /ha and 0,53 million
flowers /ha, respectively). To cultivate V2 (F1 80447) he/she obtained the largest height, with average of 88,92cm. The variedade F1 50011 showed to smallest plant height, although the plant height doesn't have influences on the total weight of flowers This same variety
also presented the largest diameter medium of
flower (70,66mm). Concluded that as smaller the number of
flowers, larger it individual weight, with larger consequent production of petals for flower. The variety F1 50011 presented the largest number of flowers /ha in
all of the planting densities studied, where in
the planting densities (200.000 and 133.333 plants
/ha), were almost obtained 2,0 million flowers. It was verified that in the 5a. and 6a. planting (rainy period) the 20cm and 25cm spacing among plants, best for the variety F1 50011 (20,22 t /ha and 19,78 t /ha, respectively)
and in the dry (1st, 2nd and 3rd) period, the larg
est productions of flowers, were obtained in
the smaller densities (200.000 e 133.333 plants/ha).
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Kazakidou, Despina. "The effect of some environmental factors on carotenoid production in African marigold (Tagetes erecta L.)." Thesis, Imperial College London, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246440.
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Reid, Rhoades Pamela Gail. "Growth responses of Marigold, Zinnia and Vinca grown in 288 plug trays coated with zinc chloride compounds." Master's thesis, Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-11062007-175849.
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Mudumbi, John Baptist Nzukizi. "Bioaccumulation of Perfluoroalkyl Substances in African marigold (Tagetes erecta L.) used for Diabetes mellitus Management and in Diabetic Serum of a South African Population." Thesis, Cape Peninsula University of Technology, 2019. http://hdl.handle.net/20.500.11838/2990.
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Thesis (DPhil (Environmental Health))--Cape Peninsula University of Technology, 2019<br>Polyfluoroalkyl substances (PFASs), including perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) are anthropogenic chemicals. For more than half a century, these long-chain compounds have been used in a wide range of industrial applications, such as the manufacturing of consumer products, ranging from grease-proof food packing to aqueous fire-fighting foams and to stain repellents such as Teflon®. Subsequently, these ubiquitous contaminants which are environmentally persistent, toxic, and bioaccumulative, have been a focus of public concern worldwide. Hence, due to public health apprehensions and environmental risks posed by PFASs, their manufacturers and various environmental agencies decided on restricting their use, and whereby the use of these chemicals could not be stopped, their replacement by other alternative chemicals was suggested. Therefore, per- or polyfluorinated carbon chains, e.g. perfluorobutane sulfonate (PFBS), which has been regarded as one of the most important short-chain PFASs and less harmful to the environment at large. However, a systematic review from the current work reveals that physicochemical properties of short-chain PFASs are not different from their predecessors thus suggesting that short-chain PFASs are as harmful as their homologues. Similarly, the literature reviewed demonstrated how novel technologies have also been proven to be incapable of removing these substances, including to short-chain PFASs, from various environmental matrices. Moreover, plant species have extensively been susceptible to PFASs, and various other POPs accumulation. However, the mechanisms that led to their uptake and storage by plants stayed unknown until proteins belonging to the family of major intrinsic proteins (MIPs) and ater named as Aquaporins (AQPs) were discovered. Hence, the present work has reported that there are diverse AQPs in plants than in mammals, with specific functions, even though first reports on these proteins suggested that their significant impact was water for transportation only. To date, it is well known that plant AQPs possess subclasses or isoforms. Some of these include SoPIP2;1 and AtTIP2;1, prevalent in Spinacia oleracea and Arabidopsis thaliana, respectively. We report that these two isoforms have individual pore diameters or sizes: SoPIP2;1 (2.1 Å) and AtTIP2;1 (3 Å), which might play a role in the selectivity process of molecules which pass through the water transportation channels of the concerned plants. This ultimately suggested SoPIP2;1 pore diameter serving as a pathway of smaller molecules, while AtTIP2;1 pore diameter would serve as a conduit for both smaller and larger compounds. As such, the pore diameters of these two isoforms made them potential conduits of PFASs whose carbon–fluorine bond typical size is 1.35 Å, much smaller than that of AtTIP2;1_2.1 Å and PIP2s, i.e. SoPIP2;1_3 Å, thus substantiating the uptake and ultimate storage of PFASs by plant species. Subsequently, the uptake and storage of PFASs and other POPs by plants have been proven to lead to unprecedented environmental and human risks. As plants with the potential to heal or manage certain ailments, such as Diabetes mellitus (DM), when exposed to PFASs, it was necessary to substantiate such a phenomenon.
This current study further determined the propensity of PFASs, such as PFOA, PFOS and PFBS, to accumulate in a plant commonly used in the management of DM, namely the African marigold (Tagetes erecta L.). The study was important as this plant is used in diabetes management in the Western Cape, South Africa, thus implying the plant being a pathway through which humans might be exposed to PFASs and its precursors. Accordingly, the target analytes of the study, PFOA, PFOS and PFBS, were identified and quantified in samples collected from the said plant, i.e. Tagetes erecta L., in contaminated river water used to irrigate the studied plant, as well as diabetic serum samples from patients likely to use the plant. The analysis was done using a liquid chromatography coupled with tandem mass spectrometry (Shimadzu LCMS-8030, Canby, OR, USA). The MS operational conditions were sourced with an MS interface electrospray ionisation in negative ion mode. A multiple reaction monitoring (MRM) mode of analysis was used to quantify the targeted PFASs in samples. Hence MRM transition for PFOA, PFOS and PFBS being of 413.00 > 368.95 (acquisition time: 8.6 min), 499.00 <80.15 (8.9 min) and 299.00 > 80.10 (6.8 min), respectively. A Luna® Omega Polar C18 column (2.1 × 100 mm, 3.0 µm, Phenomenex, Aschaffenburg, Germany), with 40 °C in temperature, assisted in the separation of the analytes. The mobile phase at a flow rate of 0.3 L/min was made of 20 mM ammonium acetate and MeOH (100%). The process followed (for solid samples, i.e. plants) (n = 8) was: 1) sample drying, 2) milling, 3) screening, 4) digestion, 5) sonication, 6) filtration, 7) Solid phase extraction (SPE), 8) analyte elution and 9) analysis; for water samples (n = 20) the process was: 1) filtration, 2) SPE, 3) analyte elution and 4) analysis; while for serum samples (n = 179) the process was: 1) sample uptake, 2) buffers, 3) Mix, 4) centrifuge, 5) Dissolve, 6) filtration, 7) SPE, 8) conditioning, 9) elution, 10) reconstitute, 11) analysis.
PFOA, PFOS and PFBS were observed in all the plant samples and were found in concentrations of up to 94.83 ng/g, 5.03 ng/g, and 1.44 ng/g, for PFOA, PFOS and PFBS, respectively. Similarly, PFOA, PFOS and PFBS were identified in all the river water samples and were found in concentrations ranging between 1.15 to 107.82, 1.24 to 20.75 and ND to 0.06 ng/L for PFOA, PFBS and PFOS, respectively, for regime A (winter/wet season) and <LOQ to 4.35, 1.89 to 5.29, and <LOQ to 0.06 ng/L for PFOA, PFBS and PFOS, respectively, for regime B (summer/dry season). As the river water analysed in the current study showed concentration levels of PFOA, PFOS and PFBS in comparison to the studied plant (i.e.Tagetes erecta L.), the prevalence of these substances in river water samples which was used to irrigate the studied plant suggests that contaminated water sourced for plant irrigation purposes such as in impoverished communities in South Africa, will ultimately result in the irrigated plant’s contamination. Hence, the bioconcentration factor (BCF) in the present study has indicated the African marigold’s affinity to PFAS accumulation. The BCF for PFOA, PFOS and PFBS was in the range 0.48 to 2.52, 4.00 to 167.67 and 0.05 to 0.31, respectively. Thus, the studied plant, i.e. Tagetes erecta L., demonstrated a high bioaccumulation potential for PFOS.
Furthermore, PFOA, PFOS and PFBS were detected in all the serum samples (n = 179) of individuals suffering from DM, who are likely to use Tagetes erecta L. in order to determine whether there is a direct correlation between PFOA, PFOS, PFBS with known cases of DM. The patients are from a Bellville South population, in Cape Town, South Africa, who are of mixed-ancestry origin with the second highest prevalence of diabetes in South Africa. PFOA, PFOS and PFBS concentrations of up to 4.74, 0.77 and 1.27 ng/L were detected in males, respectively; and 10.73, 1.06 and 1.77 ng/L in females, respectively; with PFBS being the second most abundant PFAS in the sera, after PFOA; albeit, no significant association was found between the investigated PFASs and DM, but a significant correlation trend was detected between PFOA and individual anthropometric and biochemical measurements.
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Bevilacqua, Caroline Borges. "Germinação e cultivo in vitro de Calendula officinalis L." Universidade Federal de Santa Maria, 2009. http://repositorio.ufsm.br/handle/1/4993.
Full textAbstract:
The objective this present study was developed a protocol of surface disinfection of marigold seeds; through immersion of seeds in etanol solution 70%, for 30 s. followed by different times of immersion in 2,5% sodium hypoclorite solution (0, 10, 20 e 30 min) plus one drop of
detergent commercial; selected a methodology by break barries to germination of marigold seeds of calendula in vitro (immersion in sulfuric acid absolute during 5 min; immersion in cloridric acid absolute during 5 min; removal of tegument and imbibiton of seeds in water destilled, during 12 h; imbibiton of seeds in water destilled, during 12 h; control). Beyond tested growth regulators concentrations (absence of growth regulators; 0,01 mg L-1 of ANA; 0,5 mg L-1 of BAP; 1 mg L-1 of BAP; 1,5 mg L-1 of BAP, in a factorial model) what induce the induction of calli in leaf segments from ex vitro and in vitro culture; evaluate the regeneration potential in vitro culture from marigold seeds in presence and absence of growth regulators
(absence of growth regulators; 0,5 μ mol of ANA; 2μ mol of BAP; 3μ mol of BAP; 4 μ mol of BAP; 5 μ mol of BAP; 6μ mol of BAP; 7μ mol of BAP, in a factorial model); evaluate the
influences of in vitro culture time in calli regeneration formed under growth regulators concentrations and different concentration of growth regulators (absence of growth regulators; 2μ mol of BAP and 0,5 μ mol of ANA; 5 μ mol of BAP and 0,5 μ mol of ANA; 6 μ mol of BAP and 0,5 μ mol of ANA; 7μ mol de BAP and 0,5 μ mol of ANA; containing old calli; containing young calli, in a factorial model) in regeneration and type formed. Verified was that the immersion in 2,5% sodium hypoclorite solution for 30 min coupled with the removal of tegument promoted the in vitro germination of marigold seeds and making a surface disinfection satisfactory of seeds; not is necessary of supplementation with cytokinins to promote the rhizogenesis in marigold; is necessary the addiction of BAP the nutrient medium to occur calogenesis in leaf segments from the in vitro culture and in seeds, need to
be great concentration that growth regulator if the culture is made in the ANA presence; for calogenesis in leaf segments coming of ex vitro culture, not is necessary increase the BAP concentration in ANA presence; for regeneration of aerial parts from seeds not is necessary
the BAP supplementation or ANA; for regeneration of roots from seeds not is necessary BAP presence or ANA, however with ANA addiction become necessary BAP supplementation; the calogenesis is favored the use of BAP; calli more tumid were verified in growth regulators presence; young calli in ANA and BAP absence and presence induced formation of spongy calli and of green calli; young calli are more efficient to regenerate aerial parts.<br>Constituíram objetivos desse trabalho: desenvolver um protocolo de desinfestação superficial de sementes, através da imersão das sementes em solução de etanol a 70%, por
30 s.,seguido de diferentes tempos de imersão em solução de hipoclorito de sódio a 2,5% (0, 10, 20 e 30 min) acrescida de uma gota de detergente comercial; selecionar uma
metodologia para a superação da barreira para a germinação de sementes de calêndula in vitro; utilizando-se diferentes métodos de superação dessa barreira (imersão em Ácido
Sulfúrico absoluto durante 5 min; imersão em Ácido Clorídrico absoluto durante 5 min; retirada do tegumento e embebição das sementes em água destilada, durante 12 h; embebição das sementes em água destilada, durante 12 h; controle). Além de testar concentrações de fitorreguladores (ausência de fitorreguladores; 0,01 mg L-1 de ANA; 0,5 mg L-1 de BAP; 1 mg L-1 de BAP; 1,5 mg L-1 de BAP, em esquema bifatorial)que induzam à formação de calos em segmentos foliares oriundos de cultivo in vitro e ex vitro de calêndula; avaliar o potencial de regeneração no cultivo in vitro a partir de sementes de calêndula utilizando diferentes concentrações de fitorreguladores (ausência de fitorreguladores; 0,5 μ mol de ANA; 2μ mol de BAP; 3μ mol de BAP; 4 μ mol de BAP; 5
μ mol de BAP; 6μ mol de BAP; 7μ mol de BAP, em esquema bifatorial) e avaliar a influência do tempo de cultivo e das diferentes concentrações de fitorreguladores (ausência
de fitorreguladores; 2μ mol de BAP e 0,5 μ mol de ANA; 5 μ mol de BAP e 0,5 μ mol de ANA; 6 μ mol de BAP e 0,5 μ mol de ANA; 7μ mol de BAP e 0,5 μ mol de ANA; contendo
calos velhos; contendo calos jovens, em esquema bifatorial) na regeneração e no tipo de calo formado. Foi verificado que a imersão em solução de hipoclorito de sódio a 2,5% por 30
min aliada à remoção do tegumento promovem a germinação in vitro de sementes de calêndula efetuando uma desinfestação superficial satisfatória das sementes utilizadas; não há necessidade de suplementação com citocininas para promover a rizogênese em calêndula; é necessária a adição de BAP ao meio nutritivo para ocorrer a calogênese em
segmentos foliares oriundos de cultivo in vitro e em sementes, devendo ser maior a concentração desse fitorregulador se o cultivo for efetuado na presença de ANA; no caso de
calogênese em segmentos foliares advindos de cultivo ex vitro, não é necessário aumentar a concentração de BAP na presença de ANA; para a regeneração de partes aéreas a partir de sementes não é necessária a suplementação de BAP nem de ANA; para a regeneração de raízes a partir de sementes não é necessária a presença de BAP nem de ANA, contudo com a adição de ANA torna-se necessária a suplementação com BAP; a calogênese é favorecida pela utilização de BAP; calos mais intumescidos foram verificados na presença de fitorreguladores; calos, na presença de ANA e de BAP, induzem à formação de calos esponjosos e de calos verdes; calos jovens são mais eficientes para regenerar partes
aéreas.
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Lidija, Petrović. "Dobijanje ekstrakta nevena (Calendula officinalis L.) ugljen dioksidom pod pritiskom i njegovo mikrokapsuliranje u sistemu polimer-površinski aktivna materija." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2010. http://dx.doi.org/10.2298/NS20100702PETROVIC.
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Savremene svetske tendencije upućuju na sve širu primenuekstrakata lekovitog i aromatičnog bilja, kako u prehrambenimproizvodima– funkcionalna hrana, tako i u proizvodimafarmaceutske i kozmetičke industrije. Ekstrakti biljnogmaterijala, dobijeni primenom ugljendioksida pod pritiskom,sadrže termički nepromenjene aktivne komponente, te seposlednjih godina sve više primenjuju u farmaceutskoj iprehrambenoj industriji.Cilj ove doktorske disertacije je da se ispita mogućnostinkorporiranja ekstrakta nevena (<em>Calendula officinalis</em> L.), kaofarmakološki aktivne materije, u mikrokapsule sa ciljem zaštiteod spoljašnjih uticaja, produžetka njegovog delovanja iproširenja mogućnosti primene.Za dobijanje ekstrakata nevena primenjeni su postupciekstrakcije ugljendioksidom u tečnom i superkritičnom stanju.Definisani su uslovi pri kojima je moguće dobiti ekstrakat savisokim sadržajem etarskog ulja, nosiocem gastro-intestinalnogdelovanja (200 bar, 40<sup>o</sup>C). Totalni ekstrakt dobijen pod ovimuslovima ekstrakcije je odabran za dobijanje mikrokapsula.Ispitivana je mogućnosti primene polimer–PAM interakcijenejonskih derivata celuloze- hidroksipropilmetil celuloze(HPMC) i anjonske PAM- natrijum dodecilsulfata (SDS), zaformiranje omotača mikrokapsula. Primenom konduktometrijskei viskozimetrijske metode, određene su karakterističnekoncentracije pri kojima HPMC–SDS interakcija započinje izavršava se. Definisan je uticaj osobina molekula HPMC(molekulska masa, stepen supstitucije, vrsta supstituenta) itemperature na širinu intervala interakcije i objašnjenimehanizmi njihovog povezivanja, sa osvrtom na strukturu iosobine formiranih HPMC/SDS komleksa. Reološkimispitivanjima pri različitim uslovima definisane su promene uponašanju sistema u zavisnosti od HPMC–SDS interakcije.Ispitivan je uticaj interakcije na osobine 20% emulzijasuncokretovog ulja u vodi određivanjem njihovih reološkihosobina, veličina i raspodela veličina kapi i praćenjemstabilnosti. Utvrđeno je da se u oblasti najizraženije HPMC–SDS interakcije, odnosno kada se na granici faza ulje-vodanalazi umrežen HPMC/SDS kompleks, dobijaju emulzijenajveće stabilnosti, sa njajmanjim srednjim prečnikom kapi.Sušenjem emulzija, primenom spray drying postupka,dobijene su mikrokapsule uljnog sadržaja, stabilizovanekompleksom HPMC/SDS. Najbolje karakteristike mikrokapsula(mehanička otpornost, morfološke karakteristike, sposobnostredispergovanja, veličina i raspodela veličina čestica i količinainkapsuliranog ulja), dobijene u oblasti najizraženije interakcije.Dodatak odabranog CO<sub>2</sub> ekstrakta nevena u uljnu fazuemulzija ne menja značajno njihove osobine, kao ni osobine iznjih dobijenih mikrokapsula.Ispitivanja sprovedena u ovoj doktorskoj disertacijipokazala su da se osobine kompleksa polimer/PAM moguiskoristiti za mikrokapsulaciju ulja kao nosača farmakološkiaktivnih materija.<br>Contemporary global trends in food- functional food,pharmaceutical and cosmetic industry as well have beenfocused on a wider medical plants extracts application duringthe recent decade. Plant extracts obtained by means of carbondioxide under high pressure contained all unchanged activecompounds from plant, so that they have became morepopular for application in food and pharmaceuticals recently.The aim of this thesis was to investigate the possibility toincorporate marigold extract (<em>Calendula officinalis</em> L.), as apharmacologicaly active compound, into microcapsules inorder to protect them from surrounding medium, improvetheir activity and enlarge application.Marigold extracts were obtained by means of carbondioxide- CO2 under subcritical and supercritical conditions.Extraction conditions under which obtained extract has highcontent of essential oil, responsible for gastrointestinalactivity, were determined (200bar and 40<sup>o</sup>C). Total extractobtained under such conditions, was chosen for microcapsulepreparation. Application possibility of polymer–surfactantinteraction between non-ionic cellulose derivativehydroxypropylmethylcellulose (HPMC) and anionicsurfactant- sodium dodecylsulfate (SDS) to microcapsulewall formation was investigated. Characteristicconcentrations at which interaction starts and ends weredetermined by means of conductometric and viscometricmeasurements. The influence of HPMC molecularcharacteristics (molecular weight, degree of substitution andsubstituents kind) and temperature on interaction weredetermined and, considering the structure and characteristicsof HPMC/SDS complexes, binding mechanism wasexplained. The changes in HPMC-SDS system caused bytheir interaction were defined by rheological investigationsthat took place under various conditions.The influence of interaction on the properties of 20%sunflower oil/water emulsion was investigated by rheologymeasurement, particle size and particle size distributiondetermination and stability testing. It was provided thatemulsions prepared in the region of pronounced HPMC–SDSinteraction, where HPMC/SDS complex is adsorbed at theo/w interface, have highest stability and smallest particlemean diameter.Microcapsules were obtained by spray drying ofemulsions stabilized with HPMC/SDS complex. The bestcharacteristics (mechanical resistance, morphologicalcharacteristics, redispersing ability, particle size and particlesize distribution and amount of encapsulated oil) havemicrocapsules obtained in the region of most pronouncedinteraction.Addition of marigold CO<sub>2</sub> extract in to the oil phase ofemulsions has no significant influence neither on their, nor oncorresponding microcapsules characteristicsInvestigations conducted in this thesis showed thatcharacteristics of polymer/surfactant complexes can be usedin microencapsulation of oil as carrier of pharmacologicallyactive compounds
Books on the topic "Marigold"
More sourcesBook chapters on the topic "Marigold"
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Gupta, Youdh Chand, Sapna Panwar, Namita Banyal, Neelam Thakur, and M. R. Dhiman. "Marigold." In Floriculture and Ornamental Plants. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-15-3518-5_1.
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Gupta, Y. C., Sapna Panwar, Namita Banyal, Neelam Thakur, and M. R. Dhiman. "Marigold." In Floriculture and Ornamental Plants. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-1554-5_1-1.
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Parthasarathy, S., R. Kalaivanan, R. Sangavi, and P. Lakshmidevi. "Marigold." In Pests and Diseases in Flower, Medicinal and Aromatic Crops. CRC Press, 2025. https://doi.org/10.1201/9781003623793-10.
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Majeed, Hammad, Tehreema Iftikhar, Syeda Shehwar Zahra, et al. "Wild Marigold." In Essentials of Medicinal and Aromatic Crops. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-35403-8_13.
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Katsvanga, Cuthbert. "Marigold Oil." In Green Pesticides Handbook. CRC Press, 2017. http://dx.doi.org/10.1201/9781315153131-9.
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Sastry, K. Subramanya, Bikash Mandal, John Hammond, S. W. Scott, and R. W. Briddon. "Tagetes spp. (Marigold)." In Encyclopedia of Plant Viruses and Viroids. Springer India, 2019. http://dx.doi.org/10.1007/978-81-322-3912-3_926.
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Krist, Sabine. "Marigold Seed Oil." In Vegetable Fats and Oils. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-30314-3_71.
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Mukundan, U., and M. Hjortso. "Transgenic Tagetes spp. (Marigold)." In Transgenic Crops III. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-10603-7_20.
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Sastry, K. Subramanya, Bikash Mandal, John Hammond, S. W. Scott, and R. W. Briddon. "Dimorphotheca sinuata (Glandular Cape marigold)." In Encyclopedia of Plant Viruses and Viroids. Springer India, 2019. http://dx.doi.org/10.1007/978-81-322-3912-3_326.
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Safar, Ausama Abdulwahab. "French Marigold (Tagetes patula L.)." In Ancient and Traditional Foods, Plants, Herbs and Spices used in the Middle East. CRC Press, 2023. http://dx.doi.org/10.1201/9781003243472-16.
Full textConference papers on the topic "Marigold"
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Popovici, Lucia-Florina, and Simona Oancea. "COMPARATIVE STUDY ON PHENOLICS, FLAVONOIDS, TANNINS AND ANTIOXIDANT PROPERTIES OF CALENDULA OFFICINALIS EXTRACTS OBTAINED BY DIFFERENT EXTRACTION TECHNIQUES." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s25.21.
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The aim of this study was to evaluate the influence of several extraction methods on the content of bioactive compounds of polyphenolic structure and antioxidant properties of petals from marigold flowers (Calendula officinalis). Ethanolic extracts prepared using maceration, turbo-extraction and bead-beating techniques were investigated for total phenolics, flavonoids and tannins, and antioxidant activities as measured by FRAP and DPPH assays, as well. The results showed that the highest phenolic content (1316.367 � 4.316 mg GAE/100 g DW) and antioxidant activity by FRAP (505.755 � 4.623 mg ascorbic acid/100 g DW) were obtained by maceration for 24 h at room temperature, while the highest flavonoid content (2729.521 � 7.261 mg quercetin /100 g DW) and tannin content (476.748 � 4.126 mg catechin /100 g DW) were recorded in the sample subjected to turbo-extraction for 5 min. Turbo-extraction proved to be an efficient technique for extraction of total phenolics at an extraction time of 10 min, and for total flavonoids and tannins at an extraction time of 5 min. Extracts obtained by short maceration (5 min, 10 min) showed lower values of phenolic content, flavonoid content and antioxidant activity by FRAP, compared to those of sample subjected to maceration for 24 h. Extracts obtained by bead-beating technique at extraction times of 5 and 10 min indicated the lowest phenolic, tannin and flavonoid contents compared to all the other extraction methods. Ceramic (zirconium oxide) bead-beating technique generated lower contents compared to those of sample obtained using metal (stainless steel) bead-beating technique, except for the antioxidant activity by DPPH, which was found the highest among all investigated samples at an extraction time of 10 min (17.726 � 0.015 %). Our results suggest that extraction time is a key factor for the investigated techniques. The ethanolic extracts of Calendula officinalis, in particular using turbo-extraction, showed high phenolic content and ferric reducing antioxidant power, using a short extraction time, properties that increase their potential to be applied as bioactive ingredients.
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Ermolaeva, Anna V., and Anastasia I. Aniskina. "The effect of powder from marigold inflorescences (Tagetes) on the physico-chemical properties of bakery products." In Agro-industrial complex: problems and prospects of development. Far Eastern State Agrarian University, 2024. https://doi.org/10.22450/978-5-9642-0637-8-96-101.
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The article examines the effect of powder from marigold inflorescences (Tagetes) on the physico-chemical properties and nutritional value of bakery products. The analysis of physico-chemical parameters and nutritional value of bakery products was carried out, the calculation of energy value was performed. The conclusion is made about the expediency of using powder from marigold inflorescences in the production of bakery products as a functional additive.
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Yang, Chuang, and Mingzhe Li. "Study on the Extraction of Natural Lutein from Marigold." In 2016 2nd International Conference on Materials Engineering and Information Technology Applications (MEITA 2016). Atlantis Press, 2017. http://dx.doi.org/10.2991/meita-16.2017.100.
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Savelieva, A. E., A. V. Kurkina, and V. A. Kurkin. "THE STUDY OF THE FLAVONOIDS OF FLOWERS OF SPREADING MARIGOLD." In 90 лет - от растения до лекарственного препарата: достижения и перспективы. Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт лекарственных и ароматических растений", 2021. http://dx.doi.org/10.52101/9785870191003_2021_454.
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Guzman, María Rita, and Isabel Marques. "Effects of Salinity on Edible Marigold Flowers (Tagetes patula L.)." In The 3rd International Electronic Conference on Agronomy. MDPI, 2023. http://dx.doi.org/10.3390/iecag2023-15986.
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Sarwan, Bhawna, Aman Deep Acharya, Jasvinder Kaur, Simranjeet Kaur, and Mandeep Kaur. "Synthesis of a marigold-like BiOCl nanocomposite with enhanced photocatalytic activity." In PROF. DINESH VARSHNEY MEMORIAL NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM 2018. Author(s), 2019. http://dx.doi.org/10.1063/1.5098561.
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Khazieva, F. M., I. V. Basalaeva, and N. I. Kovalev. "RESPONSIVENESS OF DIFFERENT POT MARIGOLD VARIETIES ON EXOGENOUS TREATMENT OF PLANTS." In 90 лет - от растения до лекарственного препарата: достижения и перспективы. Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт лекарственных и ароматических растений", 2021. http://dx.doi.org/10.52101/9785870191003_2021_68.
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"Investigation of antibacterial activity of silver nanoparticles produced with marigold extract." In International Conference on Medicine, Public Health and Biological Sciences. CASRP Publishing Company, Ltd. Uk, 2016. http://dx.doi.org/10.18869/mphbs.2016.50.
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"Effects of Marigold Cultivation on Microbial Diversity of Tobacco-planting Soil." In 2018 International Conference on Biomedical Engineering, Machinery and Earth Science. Francis Academic Press, 2018. http://dx.doi.org/10.25236/bemes.2018.005.
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Glubsheva, Tatyana, Elena Dumacheva, Vladimir Cherniavskih, and Svetlana Grigorenko. "The Allelopathic Effect of Marigold Infusion on the Mustard Seeds Swelling." In Proceedings of the 1st International Symposium Innovations in Life Sciences (ISILS 2019). Atlantis Press, 2019. http://dx.doi.org/10.2991/isils-19.2019.27.
Full textReports on the topic "Marigold"
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Dick, Warren, Yona Chen, and Maurice Watson. Improving nutrient availability in alkaline coal combustion by-products amended with composted animal manures. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7587240.bard.
Full textAbstract:
Hypothesis and Objectives: We hypothesized that coal combustion products (CCPs), including those created during scrubbing of sulfur dioxide from flue gases, can be used alone or mixed with composted animal manures as effective growth media for plants. Our specific objectives were, therefore, to (1) measure the chemical, physical and hydraulic properties of source materials and prepared mixes, (2) determine the optimum design mix of CCPs and composted animal manures for growth of plants, (3) evaluate the leachate water quality and plant uptake of selected elements from prepared mixes, (4) quantify the interaction between composted animal manures and B concentrations in the mixes, (5) study the availability of P to plants growing in the mixes, and (6) determine the microbial community and siderophores involved in the solubilization of Fe and its transfer to plants. Background: In recent years a major expansion of electricity production by coal combustion has taken place in Israel, the United States and the rest of the world. As a result, a large amount of CCPs are created that include bottom ash, fly ash, flue gas desulfurization (FGD) gypsum and other combustion products. In Israel 100,000 tons of fly ash (10% of total CCPs) are produced each year and in the US a total of 123 million tons of CCPs are produced each year with 71 million tons of fly ash, 18 million tons of bottom ash and 12 million tons of FGD gypsum. Many new scrubbers are being installed and will come on-line in the next 2 to 10 years and this will greatly expand the amount of FGD gypsum. One of the main substrates used in Israel for growth media is volcanic ash (scoria; tuff). The resemblance of bottom coal ash to tuff led us to the assumption that it is possible to substitute tuff with bottom ash. Similarly, bottom ash and FGD gypsum were considered excellent materials for creating growth mixes for agricultural and nursery production uses. In the experiments conducted, bottom ash was studied in Israel and bottom ash, fly ash and FGD gypsum was studied in the US. Major Achievements: In the US, mixes were tested that combine bottom ash, organic amendments (i.e. composts) and FGD gypsum and the best mixes supported growth of tomato, wheat and marigolds that were equal to or better than two commercial mixes used as a positive control. Plants grown on bottom ash in Israel also performed very well and microelements and radionuclides analyses conducted on plants grown on bottom coal ash proved it is safe to ingest the edible organs of these plants. According to these findings, approval to use bottom coal ash for growing vegetables and fruits was issued by the Israeli Ministry of Health. Implications: Bottom coal ash is a suitable substitute for volcanic ash (scoria; tuff) obtained from the Golan Heights as a growth medium in Israel. Recycling of bottom coal ash is more environmentally sustainable than mining a nonrenewable resource. The use of mixes containing CCPs was shown feasible for growing plants in the United States and is now being evaluated at a commercial nursery where red sunset maple trees are being grown in a pot-in-pot production system. In addition, because of the large amount of FGD gypsum that will become available, its use for production of agronomic crops is being expanded due to success of this study.
2
Dick, Warren, Yona Chen, and Maurice Watson. Improving nutrient availability in alkaline coal combustion by-products amended with composted animal manures. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7695883.bard.
Full textAbstract:
Hypothesis and Objectives: We hypothesized that coal combustion products (CCPs), including those created during scrubbing of sulfur dioxide from flue gases, can be used alone or mixed with composted animal manures as effective growth media for plants. Our specific objectives were, therefore, to (1) measure the chemical, physical and hydraulic properties of source materials and prepared mixes, (2) determine the optimum design mix of CCPs and composted animal manures for growth of plants, (3) evaluate the leachate water quality and plant uptake of selected elements from prepared mixes, (4) quantify the interaction between composted animal manures and B concentrations in the mixes, (5) study the availability of P to plants growing in the mixes, and (6) determine the microbial community and siderophores involved in the solubilization of Fe and its transfer to plants. Background: In recent years a major expansion of electricity production by coal combustion has taken place in Israel, the United States and the rest of the world. As a result, a large amount of CCPs are created that include bottom ash, fly ash, flue gas desulfurization (FGD) gypsum and other combustion products. In Israel 100,000 tons of fly ash (10% of total CCPs) are produced each year and in the US a total of 123 million tons of CCPs are produced each year with 71 million tons of fly ash, 18 million tons of bottom ash and 12 million tons of FGD gypsum. Many new scrubbers are being installed and will come on-line in the next 2 to 10 years and this will greatly expand the amount of FGD gypsum. One of the main substrates used in Israel for growth media is volcanic ash (scoria; tuff). The resemblance of bottom coal ash to tuff led us to the assumption that it is possible to substitute tuff with bottom ash. Similarly, bottom ash and FGD gypsum were considered excellent materials for creating growth mixes for agricultural and nursery production uses. In the experiments conducted, bottom ash was studied in Israel and bottom ash, fly ash and FGD gypsum was studied in the US. Major Achievements: In the US, mixes were tested that combine bottom ash, organic amendments (i.e. composts) and FGD gypsum and the best mixes supported growth of tomato, wheat and marigolds that were equal to or better than two commercial mixes used as a positive control. Plants grown on bottom ash in Israel also performed very well and microelements and radionuclides analyses conducted on plants grown on bottom coal ash proved it is safe to ingest the edible organs of these plants. According to these findings, approval to use bottom coal ash for growing vegetables and fruits was issued by the Israeli Ministry of Health. Implications: Bottom coal ash is a suitable substitute for volcanic ash (scoria; tuff) obtained from the Golan Heights as a growth medium in Israel. Recycling of bottom coal ash is more environmentally sustainable than mining a nonrenewable resource. The use of mixes containing CCPs was shown feasible for growing plants in the United States and is now being evaluated at a commercial nursery where red sunset maple trees are being grown in a pot-in-pot production system. In addition, because of the large amount of FGD gypsum that will become available, its use for production of agronomic crops is being expanded due to success of this study.