BrainMap

Delia-Georgeta DUMITRAS

- INSTITUTUL GEOLOGIC AL ROMANIEI

Researcher

Expertise & keywords

ECOLOGICAL PRODUCTS BASED ON DIATOMACEOUS EARTH AND ESSENTIAL OILS FOR THE RESIDUES AND CONTAMINANTS REDUCTION FROM THE FOOD CHAIN Call name: Joint Applied Research Projects - PCCA 2013 - call
PN-II-PT-PCCA-2013-4-0425 2014 - 2017

Role in this project:

Coordinating institution: INSTITUTUL DE CERCETARE-DEZVOLTARE PENTRU PROTECTIA PLANTELOR

Project partners: INSTITUTUL DE CERCETARE-DEZVOLTARE PENTRU PROTECTIA PLANTELOR (RO); Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie - ICECHIM Bucuresti (RO); INSTITUTUL GEOLOGIC AL ROMANIEI (RO); AGROTEHNIC S.R.L. (RO)

Affiliation: INSTITUTUL GEOLOGIC AL ROMANIEI (RO)

Project website: http://www.pediol.ro

Abstract:

Diminution of residues and contaminants from the whole food chain is a great challenge for the world developed society. One of the most dangerous risk factors is represented by the agricultural insect pests and fungal diseases which destroy the crop plants in the field and post harvested yield in storage, generating huge economical losses every year. Mycotoxins produced by pathogenic fungi in cereal crops are transferred from field to storage, in feed, animal bodies and finally in food products obtained from these, such as eggs, milk and meat, producing human health disorders. Chemical means (insecticidal fungicidal products and storage fumigants)from risk management programs implemented in agricultural practice to reduce storage insect populations and mycotoxins transfer from storage to animal diet were not able to completely destroy pests or mycotoxigenic fungi, nor in field or storage. Technical solution proposed by the project is an innovative approach of treatment in the sequence of food chain from storage to animal body grown in farm, with ecological products obtained from bioactive diatomaceous earth and essential oils from renewable vegetal sources with insecto-fungicidal properties. Project consortium consists of three complementary Research and Development Institutions covering the multidisciplinary thematic domain of the project (mineralogy, plant protection and chemistry of bioresources for bioproducts obtanation) and an agrotechnical farm as a small enterprise and co-financier. Experienced research specialists of the implementation team of the project will select the best bioactive diatomaceous earth from Romanian local deposits, the most efficacy natural principles from essential oils and the best recipes to obtain modern formulations of ecological products (encapsulated slow release granules and tablets). To attain such ambitious objectives, the mineralogists from RGI will collect, identify, characterize and select the most appropriate mineral constituent for the ecological formulations and the NIRDCP Partner will develop laboratory technologies for obtaining vegetal bioactive principles and formulation of original ecological products for grain storage treatment and veterinary feed supplement to be patented and transferred for a larger scale micropilot production. Raw materials, intermediates and final products will be subject to biological screening for selection of the most effective against insects and mycotoxigenic fungi infesting stored grains, in controlled conditions by RDIPP and in production conditions of storage by the farm Agrotehnic. Patented procedure of use and a new guide of good practices in the management of contamination risk in storehouses will be provided. The mycotoxin contamination and the diminution degree of the mycotoxin concentration on stored grains as an effect of the treatment with the ecological product will be quantified by chromatographic, biochemical or electrochemical methods. For antimycotoxin antidote efficacy of veterinary feed supplements, an accredited institution for biological evaluation services on model animals will be subcontracted. Project results which are not object of intellectual or industrial property rights will be disseminated on a wide scale at national and international scientific events. Agrotehnic farm has a great potential for cereal production and proper grain storage, a guaranty for the implementation of the project results and good perspective for agro-technological development, with interest and excellent chances to gain a better position on the national and international market with new agro-veterinary products, cheaper, easy available for farmers, rapidly biodegradable, non-toxic for mammalians, eco-friendly alternatives to synthetic insecticides and fungicides.

Mineralogical studies on high-temperature skarns in Romania: A way to understand the changes in the Portland-type clinkers and cements Call name: Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0023 2011 - 2016

Role in this project:

Coordinating institution: Institutul National de Cercetare-Dezvoltare in Domeniul Geologiei, Geofizicii, Geochimiei si Teledetectiei - IGR Bucuresti

Project partners: Institutul National de Cercetare-Dezvoltare in Domeniul Geologiei, Geofizicii, Geochimiei si Teledetectiei - IGR Bucuresti (RO)

Affiliation: Institutul National de Cercetare-Dezvoltare in Domeniul Geologiei, Geofizicii, Geochimiei si Teledetectiei - IGR Bucuresti (RO)

Project website: http://www.igr.ro/index.php?optiune=52

Abstract:

The occurrences of high-temperature calcic skarns are relatively rare. Worldwide, over thirty records of such rocks were reported, from which four are located in Romania: Oraviţa, Ciclova, Măgureaua Vaţei and Cornet Hill. These skarns are basically composed by carbonates and silicates that can be easily related to the CaO-SiO2-H2O-Al2O3 system, usually described as C-S-H-A phases by the cement researchers. The Portland cements and clinkers basically contain the same phases, whose lower crystallinities preclude accurate studies. Natural systems such as the in-situ self-combusted carbonatic formations (Hatrurim in Israel and Maquarin in Jordan) were used for studies on the hydration of the calcium silicates and described as natural cements, but the conditions offered for study by the calcic high-temperature skarns are much better. These skarns are usually barren and offer the best conditions for the study of the hydration parageneses developped on the (carbonate- and sulfate-bearing) calcium silicates. The project proposes a minute study of the crystal chemistry and crystallography of the high-temperature, hydrothermal and weathering mineral parageneses from the four Romanian occurrences of high-temperature skarns, which will be of great interest for the cement and concrete studies. As fundamental research work, it will enlarge the knowledge on the mineralogy of the high-temperature skarns, which have one of the most important potential for the discovery of new mineral species

FILE DESCRIPTION	DOCUMENT
List of research grants as project coordinator
List of research grants as partner team leader
List of research grants as project coordinator or partner team leader
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects