The vitamin content of cultivated mushrooms differs from one species to another, depending on their stage of development, the nutrient substrate used to produce them, and the microclimate in the culture space. Agaricus blazei Murrill is one of the most popular cultivated medicinal mushrooms, with scientifically proven therapeutic properties. Considering that the Agaricus spp. mushrooms culture substrate can be produced using various raw materials, in this paper we have studied the influence of the culture substrate using four types of substrate with different protein additions on the vitamin content of mushrooms. The food qualities of the Agaricus blazei Murrill mushrooms, evaluated by the chemical composition, generally revealed the product obtained on the classic compost, improved with the addition of proteinaceous of corn flour. Mushrooms harvested on this substrate have the highest levels of B1 (1151 μg 100g−1 dm), B9 (671 μg 100g−1 dm), B12 (906 μg 100g−1 dm), PP (55.33 μg 100g−1 dm), and C vitamins (21.67 μg 100g−1 dm). The content of ergosterol, as a precursor of D2 vitamin, has higher values ​​in the product obtained on the classic compost, with the addition of wheat bran (90.17 mg 100g−1 dm) and the addition of corn flour (94 mg 100g−1 dm).

Agaricus spp. mushrooms are edible fungi of commercial and medicinal importance. Mushrooms convert nutritionally valueless substances into proteinous food with a very efficient bioconversion. Consumption of mushrooms, has increased substantially due to their delicacy, flavour, nutritional and medicinal value, being considered an excellent source of protein, which can contribute to the formulation of a balanced diet. Three species of Agaricus spp. mushrooms were used in this study: Agaricus campestris (L. ex Fr.), Agaricus bisporus (J.E. Lange) and Agaricus blazei (Murrill). This study aimed to examine the effects of blanching, soaking and manufacturing processes (sun drying, oven drying and canning) on some chemical constituents of mushrooms (soluble dry matter, protein and total sugars). The analyses were performed initially at conservation and they were repeated after 6, 12 and 18 months of preservation. Since all treatments caused reduction of the dry matter content, it can be concluded that the smallest decrease during the storage period was recorded by soaked and sun dried A. blazei (1.6 g 100 g DM.Keywords: Agaricus bisporus, A. blazei, A. campestris, blanching, drying, dry matter, total sugars Abbreviations: CP -crude protein; DM -dry matter; FM -fresh matter; S1 -Agaricus campestris L. ex Fr.; S2 -Agaricus bisporus J.E. Lange; S3 -Agaricus blazei Murrill; T1 -untreated sample (control); T2 -blanching in 2% sodium chloride and 0.2% citric acid boiling solution for 2 min; T3 -soaking in 2% sodium chloride and 0.2% citric acid boiling solution for 10 min; TS -total sugars

Magnesium (Mg) is an element with a role in oxidation processes. The optimal concentration of magnesium for the development of fungi is associated with an optimal concentration of phosphorus (P), which through its essential constituents, is an important element for the existence of biological systems in nature through nucleic acids, phospholipids, phosphoglycerides, phytin and phosphates. Magnesium has a role in the activity of certain enzymes and in respiration, being a component of protein substances with a special importance for microorganisms being included in reducing and phosphorylating enzymes and for protein synthesis. In this study, magnesium sulphate (MgSO4), which is an accessible source of both magnesium and sulphur, as well as magnesium carbonate (MgCO3) were used as sources of magnesium, both being used in different concentrations in the growth medium. The culture medium or substrate influences the growth of the fungal mycelium, through the mineral, nutritive and stimulating substances in their composition. Using experimental culture media, an isolated tissue culture was performed from 2 strains of Cordyceps militaris (L.) fungus. The culture was performed in Petri dishes, incubated at a temperature of 24 ° C, aiming to increase the mycelium for 15 days. The highest increase was recorded by strain CI 32 with the addition of magnesium sulphate.

In the assortment of cut flowers, carnations (Dianthus caryophyllus L.) fall in the first places, with a large number of varieties, of various colors, being appreciated on the cut flowers market. Carnations flowers that cannot be sold immediately after harvest, being a time of year when the market offers an abundance of cut flower species, they are prone to rapid depreciation under normal environmental conditions. Carnation is an important ornamental plant, which is used as a potted plant as well as a cut flower. One factor that influences the shelf life is temperature. From the flowering stage to the total depreciation of the inflorescence, it plays an important role. In this experiment, the flowers were harvested on two different dates for about a month. The temperatures at which the varieties were kept had 6 graduations (from 10 to 22 °C). The parameters followed were: bud height, corolla height above the calyx, bud diameter and flower stem length. Storing flowers in water at 4 °C for 6 to 15 days, did not increase the diameter of the flower bud. In flowers kept at 22 °C for 6 days, the values of several parameters of cell senescence fell below the values of fresh flowers. However, in flowers kept at 4 °C there was no expected slow decrease in these parameters, but rather an increase above the levels found in fresh flowers. We conclude that storage at low temperatures has effects on carnation cut flowers, other than slowing down the aging process.

The Tibetan mushroom (Cordyceps militaris) has been known and used in traditional Chinese medicine for its therapeutic properties for thousands of years. This mushroom is rich in nutrients and biologically active components, such as: cordicepic acid, glutamic acid, mannitol, proteins, amino acids, polysaccharides, magnesium and calcium. These substances make Tibetan Mushroom an extraordinary means of restoring health and increasing the vitality of the body. In the study, we used a solid culture substrate with 3 degrees (based on brown rice, wheat and barley) with a pH of 7 degrees (4.5-7.5). It was found that the pH of the culture substrate directly influences the production of cordycepin, so at a pH value of 5 the cordycepin content begins to increase, reaching its highest level at a pH value of 5.5 (362 mg/L), then at pH values above 6, the cordycepin concentration begins to decrease.