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  • Author: Dana Tăpăloagă x
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Mara Georgescu, Ștefania Mariana Raita and Dana Tăpăloagă

Abstract

Various antimicrobial solutions have been tested as additives for raw milk traditional cheeses, among which Nigella sativa cold pressed seed oil (NSSO) is recognized for its positive effect on the microbial quality of such products. The overall effect on the quality of enriched cheeses during ripening is still under extensive investigation. Three batches of traditional raw milk brined cheese were included in the current experiment: control cheese without Nigella sativa seed oil (NSSO) and cheese samples enriched with 0.2 and 1% w/w NSSO. Experimental cheese samples were analyzed in duplicates for total nitrogen content (TN), at 0, 14, 28 and 42 days of ripening, while single determinations of total nitrogen (WSN) and free amino acids (FAA) were performed at 14, 28 and 42 ripening days. The TN content revealed similar values for control cheeses and NSSO cheeses, and no significant differences were noticed within the three treatment groups (p >.05) throughout ripening. WSN values followed a significant rising shift in all cheeses during ripening, yet computing data obtained for the three considered treatments, despite an obvious higher WSN content of NSSO enriched cheeses, no statistical significance could be associated to this difference. The FAA composition of the experimental cheeses, varied quantitatively, by increasing with ripening time, but no qualitative variation was noticed during the follow-up period. The FAA composition of the did not vary significantly within treatments.

Open access

Şapcaliu Agripina, Vasilică Savu, Ion Radoi, Dana Tapaloagă, Petruţ Tanase and Victor Calin

Abstract

In order to obtain a natural apiphytotherapeutic formula with anti-parasite effect, as an alternative in the control of Nosema spp. infection, an original formula based on hydro-alcoholic extracts from plants and propolis was tested. Experiments were made on naturally infected adult bees from private apiaries diagnosed with nosemosis (Nosema apis/Nosema ceranae). Initially hydro-alcoholic extracts from plants in Romania’s flora and respectively from propolis (Apis mellifera), with sensorial, physical- chemical and microbiologic characteristics, in conformity with requirements in the European Pharmacopeia VIth Edition and Romanian Pharmacopeia Xth edition. Parasitosis was demonstrated through laboratory methods, respectively through direct microscopic examination, on bee samples collected from aviaries according to O.I.E. (World Organisation for Animal Health) methodology (2008). „In vitro“ lab testing of plant extracts and of work variants was done firstly on naturally infested polyfloral honey having an average concentration of 7 spores/ microscopic field of Nosema sp., with the purpose of selecting the most effective work variant which was afterwards tested „in vivo“ in private apiaries, on bee colonies. The results of the clinical study showed the absence of disease in 75% of the treated hives (33 hives), bees being declared clinically healthy. In 14 % of the hives (6 hives) infestation was weak, in 6.82% of the hives (3 hives) infestation was medium, and 4.55 % (2 hives) were diagnosed with a massive degree of infestation and the therapeutic protocol continued.

Open access

Viorica Lagunovschi-Luchian, Costel Vinatoru, Bianca Zamfir, Camelia Bratu, Dana Tăpăloagă and Ion Radoi

Abstract

Between 1996-2015, at V.R.D.S Buzau were conducted researches regarding the acclimatization, breeding and elaboration of crop technology for a new vegetable species, Momordica charantia (bitter cucumber). There were purchased and studied a large number of genotypes which were assessed for a long period; 4 of those have demonstrated increased adaptability, for which they were retained and multiplied in lineage. In time, by specific cucurbits improvement techniques were obtained 4 genetically stabilized accessions noted as G1, early accessions with large fruits,G2, medium fruit size, G3, medium fruit size and L4 with small crunchy fruits, semi tardy. Of these, L3 was homologated and patented under the name of Rodeo, and the other 3 will be proposed for homologation in the future. The studies demonstrated that this species has well adapted to our pedoclimatic conditions; it can be cultivated both in greenhouses and in open fields, in warmer areas, mentioning that for both crop variants it is recommended a drilling system. The new genotypes support various technological variants and can be ecologically cultivated with remarkable results.