Test of Wine Jelly

The purpose of this study was to test different ways of producing jelly from wine, sugar and gelling material in varying proportions, using several wine varieties. Two different wine varieties were used to produce the tested jelly. White wine of the traminer aromatic variety Pálava and red wine of fruity aromatic variety Regent. Gelling agents chosen were: a commonly available agar (for harder consistency), a confectionery jelly (carrageenan + carobin – vegetable gelatin) and pork gelatin. Full doses of the gelling agent (as specifi ed by the manufacturer) and half-doses were tested. Basic analytical determinations were carried out for the selected wine and the subsequently produced jelly. The aim was to fi nd which formula is best suited for the production of the studied product and, according to sensory evaluation, which product is considered the tastiest and the most interesting by consumers. The consistency, appearance (clarity), aroma and the taste of the resulting jelly were evaluated. The best results were achieved using confectionery jelly (carobin + carrageenan) in the prescribed full dose of 10 g / 0.25 l of wine (sample 3). The sample had the best consistency, appearance and taste. Sample No. 4 was also very good, once again using the confectionery jelly, but in a half dose of gelling material (carobin + carrageenan in a dose of 5 g / 0.25 l of wine)

Monitoring the Green Vegetation Period of Two Narcissus Taxa by Non-Destructive Analysis of Selected Physiological and Morphological Properties

In a pot experiment, an early-flowering Narcissus pseudonarcissus cv. ‘Dutch Master’ (DM) and late-flowering N. poeticus cultural form (PO) were examined. The photosynthetic rate (A), transpiration rate (E), stomatal conductance (gs), photosynthetic water use efficiency (WUE), relative chlorophyll content (CCI) and chlorophyll fluorescence (F) were measured regularly. Leaf length, scape length and weight of the plant organs were also measured. The DM cultivar had higher gs and lower E values than the PO on most measuring dates (season average: gs: DM: 165.34, PO: 123.63; E: DM: 1.39, PO: 1.78 mmol H2O m−2s−1). The A curve was similar for the two taxa, except for the first measuring dates. The basic F values (F0, Fm, Fv) for DM were lower and CCI values were higher than for PO (season average of CCI: DM: 94.82, PO: 60.34). The Fm/F0, Fv/F0 and CCI curves were well described by a second order equation. The seasonal change of F and CCI values was the greatest for both taxa near the leaf tip. Bulb growth occurred in the two taxa in approximately the same calendar period, regardless of flowering time. A significant part of the leaf growth in DM occurred after flowering, while the leaves of PO reached their mature size by flowering

Monitoring the Green Vegetation Period of Two <i>Narcissus</i> Taxa by Non-Destructive Analysis of Selected Physiological and Morphological Properties

In a pot experiment, an early-flowering Narcissus pseudonarcissus cv. ‘Dutch Master’ (DM) and late-flowering N. poeticus cultural form (PO) were examined. The photosynthetic rate (A), transpiration rate (E), stomatal conductance (gs), photosynthetic water use efficiency (WUE), relative chlorophyll content (CCI) and chlorophyll fluorescence (F) were measured regularly. Leaf length, scape length and weight of the plant organs were also measured. The DM cultivar had higher gs and lower E values than the PO on most measuring dates (season average: gs: DM: 165.34, PO: 123.63; E: DM: 1.39, PO: 1.78 mmol H2O m−2s−1). The A curve was similar for the two taxa, except for the first measuring dates. The basic F values (F0, Fm, Fv) for DM were lower and CCI values were higher than for PO (season average of CCI: DM: 94.82, PO: 60.34). The Fm/F0, Fv/F0 and CCI curves were well described by a second order equation. The seasonal change of F and CCI values was the greatest for both taxa near the leaf tip. Bulb growth occurred in the two taxa in approximately the same calendar period, regardless of flowering time. A significant part of the leaf growth in DM occurred after flowering, while the leaves of PO reached their mature size by flowering