1,720,963 research outputs found
2. Metodo di preparazione di una miscela colorante nel verde da piante appartenenti al genere Myrtus
No full textL'invenzione riguarda un metodo per la preparazione di una miscela colorante nel verde da materiale vegetale di piante appartenenti al genere Myrtus, la miscela colorante nel verde ottenibile mediante detto metodo e suo uso nei
10 procedimenti di colorazione. Il metodo ed i prodotti dell’invenzione trovano applicazione nella tintura di fibre animali, fibre vegetali, pelli, carta e altri prodotti
Nuovo metodo di preparazione di coloranti naturali
Full text linkThe present invention relates to a new method of preparing a colouring mixture, to the colouring mixture obtainable by this method and to the uses thereof. The method and the products of the invention are used in the natural dyeing of animal fibres, plant fibres, hides, paper and other products
First observation on a collection of aromatic plants in a plain area of the Campania Region (Southern Italy)
No full textThe utilization of aromatic plants has extended to new sectors such as the ornamental and hobby market or the fresh product. The Southern Italy can represent an important cropping area to answer to these new request of the market. In this work we report the first results of the observations conducted during the Spring and Summer of 2005 on a collection of aromatic plants, coming from different plant nursery and spontaneous harvest, in a irrigated fertile plane area of the Campania Region. It was adopted a scheme with three single row per plot or three binate row per plot. The relieves were made on 15 plants per plot. The bio-morphological characteristics and the resistance to biotic and abiotic stress were registered. The content of essential oil was determined. The fresh biomass and dry weight per plant, the vegetation height, the incoming PAR (Photosintetically Active Radiation) were measured at harvest in the plot when it was possible. The results of the first year of observation showed the adaptability of the tested aromatic plant to the irrigated plane area of Southern Italy. In fact they reached high yield of fresh biomass and oil with a good cover of the soil and PAR absorbance. On the other side they didn’t suffer for the water excess during the winter period and they were not submitted to high level of infestation
Chemical composition, antimicrobial and antioxidant activities of anethole-rich oil from leaves of selected varieties of fennel [Foeniculum vulgare Mill. ssp. vulgare var. azoricum (Mill.) Thell]
No full textThe paper reports the chemical composition and biological activity of the essential oils obtained from the leaves of two cultivars of Florence fennel cropped under three different fertilization treatments (Control not fertilized; Mineral Fertilization; Compost from Municipal Solid Wastes). All the oils were characterized by high anethole concentration and some showed also a good percentage of limonene. The antimicrobial activity expressed by assays on the examined oils indicates an appreciable effect generally higher on Gram-positive bacteria. The various samples of Florence fennel analyzed did not show any results with FRAP test. The DPPH test showed a weak capacity of the samples to catch the free radical from the solution attributable to their content in anethole
Screening of plant-derived antifungal substances useful for the control of seed-borne pathogens
No full textThe effect of plant essential oils, Solanum chilense and Aster sedifolius raw saponins, plant-derived colourants and Brassica carinata glucosinolate-containing tissues, for the control of seedborne fungi Alternaria dauci, Alternaria radicina, Colletotrichum lindemuthianum and Aschochyta rabiei, was evaluated. In vitro assays indicated that oregano essential oil, bark chestnut-derived colourant and B.carinata meals, showed a large spectrum of activity against all pathogens. S. chilense raw saponins were effective against A.dauci and A.radicina, while those from A.sedifolius also inhibited significantly C.lindemuthianum Screening showed the antifungal potential of natural compounds
Chemical Composition and Antigerminative Activity of the Essential Oils from Five Salvia Species
No full textThe chemical composition of the essential oils of Salvia africana L., Salvia elegans Vahl, Salvia greggii A. Gray, Salvia mellifera Green and Salvia munzii Epling, cultivated in Eboli (Salerno, Southern Italy), was studied by means of GC and GC-MS analyses. In all, 88 compounds were identified, 54 for S. africana, accounting for 95.4% of the total oil, 55 for S. elegans (92.9%), 50 for S. greggii (96.9%), 54 for S. mellifera (90.4%) and 47 for S. munzii (97.5%), respectively. In S. africana,the amount of monoterpenoids and sesquiterpenoids is very similar. For other species, the monoterpenoid percentage is greater than the amount of sesquiterpenoids. The oils of S. elegans, S. greggii and S. munzii were active inhibitors of germination and radical elongation of Raphanus sativus L. and Lepidium sativum L
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Oil distillation wastewaters from aromatic herbs as new natural source of antioxidant compounds
No full textDistillation wastewaters (DWWs) are generated during the essential oil steam distillation from aromatic herbs. Despite of growing interest on novel source of natural antioxidant compounds as food additives, studies on DWWs are scarse. Herein, the potential of DWWs produced by the distillation of packaged fresh basil, rosemary and sage wastes was evaluated by chemical and antioxidant characterization. HPLC-DAD-HRMS profiling revealed that DWWs contain water-soluble phenolic compounds, mainly caffeic acid derivatives and flavonoid glycosides, with rosmarinic acid (RA) as predominant components (29â135 mg/100 mL). DWWs demonstrated high levels of total phenolic compounds (TPC, 152â443 mg GAE/100 mL) and strong antioxidant capacities, in ORAC, DPPH and ABTS assays (1101â4720, 635â4244 and 571â3145 Î1⁄4mol TE/100 mL, respectively). Highly significant correlations of TEAC values with TPC and RA contents revealed that phenolic compounds and high RA content were responsible of DWWs antioxidant properties.Thus, DWWs are proposed as a new promising source of natural food additives and/or functional ingredients for cosmetic, nutraceutical and food applications
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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