Rezultate preliminare privind menţinerea calităţii caiselor după recoltare

The aim of this paper is to establish the influence of variety and storage conditionson the preserving capacityafter harvesting of the apricots.The paper presents the results obtained in 2016 on quality maintaining of the apricots. There were studied two Romanian varieties of apricots, created from Research Station for Fruit Growing (R.S.F.G) Constanta -Mamaia and Olimp. Apricotswere kept at Research and Development Institute for Processing and Marketing of the Horticultural Products Bucharest, in different technologicalconditions: ambient temperature (20-22ºC); temperature of 10-12° C (refrigerated conditions), with and without modified atmosphere and temperature of 3-5ºC (cold storage). The initial level and the evolution during storage of the firmness of the fruits and of the main biochemical components: soluble dry matter, soluble carbohydrates, titratable acidity and vitamin C were determined. After storage determinations were performed on the total losses, quantitative losses (expressed by evaporate-transpiration) and qualitative depreciations. The results revealed the fact that, in general the apricotswere sensitive to storage, the maximum storage duration being 5-20 days, depending on the storage conditions. The two main problems were represented by the mass losses, which caused the wrinkle of the fruist and the injuries, which mostly affected the appearance and the consumption quality. The losses by impairment were between 0 to 22.5%, depending on the variety, conditions and duration of storage. Thedepreciationof the apricots during storage was caused in most cases by the attack and the development of diseases (Botrytis, Penicillium, Phytophthora etc), which have spread rapidly in the fruit mass.The apricots of Mamaia variety were more resistant to storingthan Olimp variety, which degraded faster and more than the others. The most favorable conditions for the maintaining of the quality have been shown to be temperature of 10-12° C (refrigerated conditions), with modified atmosphere(5% CO2-enriched), in which apricots have recorded, after 20 days of storage, quantitative losses of less than 0.5% and losses by impairment of 0-2.78%, depending on variety

Achievement of a Fortifying Product based on Apples, Quinces and Sea Buckthorn

The aim of the research was to achieve a fortifying product Apple, Quince and Sea Buckthorn Nectar rich in antioxidants (vitamin C, β-carotene) and dietary fibers (cellulose, pectic substances) from fruit. In the experiments were used fruit (apples, quinces and sea buckthorn) with a high content of these nutrients. The antioxidants are chemical substances that inhibit, decompose or prevent forming of free radicals or other substances that induce cancerogenesis. Also, dietary fibers are another group of natural compounds with an important role in the prevention of the digestive diseases. In the experiments were used biochemical methods for analysis of fruit and processed products (determination of soluble dry substance, glucides, proteins, lipids, mineral elements, total acidity, vitamin C, β-carotene, cellulose, pectic substances etc.). Also were performed microbiological analysis and sensorial analysis for processed products. In order to obtain the product Apple, Quince and Sea Buckthorn Nectar, four variants of experiments were carried out at the laboratory level. Following the sensorial and biochemical analyses, the optimum variant of the product Apple, Quince and Sea Buckthorn Nectar was selected, namely the variant V3 in which the ratio apple puree and quince puree was 1:1 and the percentage of added sea buckthorn juice was 3%

The relationships between exogenous and endogenous antioxidants with the lipid profile and oxidative damage in hemodialysis patients

Background: We sought to investigate the relationships among the plasma levels of carotenoids, tocopherols, endogenous antioxidants, oxidative damage and lipid profiles and their possible effects on the cardiovascular risk associated with hemodialysis (HD) patients. Methods: The study groups were divided into HD and healthy subjects. Plasma carotenoid, tocopherol and malondialdehyde (MDA) levels, as well as erythrocyte reduced glutathione (GSH), were measured by HPLC. Blood antioxidant enzymes, kidney function biomarkers and the lipid profiles were analyzed by spectrophotometric methods. Results: Plasma lycopene levels and blood glutathione peroxidase (GPx) activity were significantly decreased in HD patients compared with healthy subjects. Total cholesterol, low-density lipoprotein cholesterol (LDL-c), creatinine, urea, MDA, GSH, superoxide dismutase (SOD) and catalase (CAT) were significantly increased in HD (p < 0.05). Lycopene levels were correlated with MDA (r = -0.50; p < 0.01), LDL-c (r = -0.38; p = 0.01) levels, the LDL-c/HDL-c index (r = -0.33; p = 0.03) and GPx activity (r = 0.30; p = 0.03). Regression models showed that lycopene levels were correlated with LDL-c (β estimated = -31.59; p = 0.04), while gender was correlated with the TC/HDL-c index and triglycerides. Age did not present a correlation with the parameters evaluated. GPx activity was negatively correlated with MDA levels and with the LDL-c/HDL-c and CT/HDL-c indexes. Conclusions: Lycopene may represent an additional factor that contributes to reduced lipid peroxidation and atherogenesis in hemodialysis patients

THE SCIENTIFIC RESEARCH OF HORTICULTURAL PRODUCTS AT THE BEGINNING OF THIRD MILLENNIUM

This paper presents the current state of preservation, processing and marketing) of the horticultural products sector in Romania, and measures of recovery and development policy both for scientific research and production