51 research outputs found
Studying the storage and processing quality of the carrot taproots (Daucus carota) of various hybrids
This paper presents the results acquired from the study of eight carrot hybrids which
are suitable for growing in the climatic zone of woodland steppes, while considering a set of
economical and/or biological, biochemical, and organoleptic properties. The carrot hybrids that
were studied have a wide range of variation in their economic value indicators, which makes it
possible to grow them for storage and processing in various soils and climate conditions without
irrigation. The most productive carrot hybrids are White Sabine F1 and Yellowstone F1 with a
commercial yield of 55.8–58.7 t hа–1
and an average taproot weight of 118.7–136.2 g. The levels
of preservation of the taproot of the hybrids White Sabine F1 and Purple Haze F1 after seven
months of storage in conditions that involved the use of a stationary pit storage facility was at
81.4% and 80.2% respectively. The use of the taproots of the hybrids Yellowstone F1 and
Viking F1 for drying ensures a yield of a high-quality, biologically-valuable finished product with
a yield of 11.4–11.7%. Dry hybrid Evolyutsiya F1 and Mars F1 carrots contain more than
40 mg (100 g)–1 of β-carotene
Optimization of plant densities of dolichos (dolichos lablab L. var. lignosus) bean in the Right-bank of Forest-steppe of Ukraine
ArticleThe density of the plants of Dolichos bean significantly influenced the economically
valuable indicators, because there is always competition for light, moisture and nutrients between
plants in the life process. The period from mass sprouting to the technical ripeness was reduced
with increasing the plant density. Such a pattern was characteristic of all phases of the growth
and development of the Dolichos bean. The plants with high population (71 thousand units ha-1)
took short period (60 and 119 days) from germination to the beginning of technical and biological
ripeness, respectively, turned out to be the earliest ripening crops. The plants are better
illuminated, the soil nutrition conditions are improved and the sanitary-hygienic climate of the
crops improves with thinned crops, thereby plant productivity has raised. However, the average
yield of scapulabeans and unripe Dolichos seeds is regulated by the density of the plants, and
increased in density due to the greater number of plants. The optimum density for Dolichos bean
was 71 thousand plants per hectare, at which yields of green shoots and green peas were formed
7.3 and 3.3 t ha-1, respectively
Suitability of various onion (allium cepa) varieties for drying and long-term storage
Received: April 15th, 2021 ; Accepted: July 21st, 2021 ; Published: July 22nd, 2021 ; Correspondence: [email protected] the paper, the results are presented obtained in the research into the fresh bulbs and
the dried products of 9 onion varieties cultivated in the conditions of the Ukrainian Forest Steppe
area with regard to their economical biology, biochemical, marketability and organoleptic
indices. The varieties that are most suitable for convection drying and long-term storage have
been identified. It has been established that the marketability of both the fresh bulbs and dried
products depends on the masses of the bulbs. The Bronze d’Amposta and Harmony varieties
deliver the greatest amount of marketable output (94.0 and 93.2%) featuring marketable bulbs
with masses of 67.4 g and 70.4 g, respectively (r = 0.82). As the bulb mass increases, the amount
of non-standard (r = -0.81) and small (r = -0.76) particles in the dried product decreases
substantially. It has been found that the content of solid matter and sugars in fresh bulbs has effect
on the yield and quality of the dried and reconstituted products. The Harmony and Skvirskaya
varieties, the bulbs of which during the vegetation season build up 12.9% and 13.8% of solid
matter, respectively, are distinguished by the highest dry product yield - 17.1 and 16.8%,
respectively. Correlation has been established between the contents of solid matter and sugars in
fresh bulbs (r = + 0.58). During the tasting of reconstituted onion products, the highest scores
were awarded to the samples produced from the Skvirskaya and Harmony varieties - 7.0 points
each on the 9-point scale, as their bulbs had accumulated over 7.0% of sugars (total). Judging by
the aggregate of the researched indices, the Harmony and Skvirskaya varieties of onions are the
most suitable for convection drying. It has been established that the preservation of onions in the
conditions of stationary buried storage without artificial cooling depends on the duration of
storage and the specific varietal features. Within the five months of the test storage, the
preservation of bulbs of all the varieties was high and varied within the range of 80–93%. Longer
storage is expedient only in case of the Harmony, Skvirskaya and Gospodinya, for which the bulb
preservation rates for a seven month storage period has been shown to be equal to 90.2, 88.4 and
87.2%, respectively. It has been proved that the quantity of healthy bulbs depends to a significant
extent on the solid matter content in the bulbs (r = 0.93)
Research into properties of blue melilot and fenugreek cultivated using different sowing times
Received: September 6th, 2021 ; Accepted: January 30th, 2022 ; Published: February 17th, 2022 ; Correspondence: [email protected] paper presents the results of the research into the properties of blue melilot
(Melilotus caeruleus (L.) Desr.) and fenugreek (Trigonella foenum graecum L.) with regard to
the set of their economy-and-biology and biochemical indices in relation to the dates of their
sowing. It has been established that the two species under consideration feature wide ranges of
index variability depending on the sowing term and the weather conditions. The earliest ripening
terms have been recorded for species in case of summer sowing dates (decade I of June), when
short growing season lengths of 36–37 days were observed. At the same time, in terms of heavy
plant herbage yield obtained from species in the green conveyor system, the early spring (decades
II–III of April) and late spring (decade I of May) sowing terms are more suitable providing
a herbage yield of 5.7–6.9 t ha–1 in case of blue melilot and 7.3–9.3 t ha–1 for fenugreek, with a
solids content of 12.4–28.4%, total sugars of 2.5–5.0% and vitamin C - 38.0–51.8 mg (100 g)-1
.
For the purpose of obtaining the spice named ‘Greek hay’ (foenum Graecum), a better choice is
to cultivate fenugreek with early spring (decades II–III of April) and late spring (decade I of May)
sowing times, as in this case a greater vegetation mass develops, resulting in a plant dry weight
yield of 1.3–1.4 t ha–1. An increase in the total precipitation by 1 mm has contributed to the
variation of the herbage yield within the range of 15.0 to 77.3 kg ha–1, dry matter yield - 0.693 to
25.9 kg ha–1. High seed yield has been noted in case of sowing the species in early spring (decades
II–III of April), where the seed yield of blue melilot was equal to 0.4 t ha-1, fenugreek - 2.0 t ha-1
,
their 1,000 seeds having a weight of 0.71 and 9.7 g, respectively
Giant Merkel cell carcinoma of the eyelid: a case report and review of the literature
Merkel cell carcinoma (MCC) is a rare cutaneous tumor and cases located in the eyelid have been described, but still its rarity may lead to difficulty in diagnosis and delay in treatment. A 51-year-old female patient that presented with large lesions in the eyelid underwent surgery after the diagnosis of acute chalazion. Following respiratory distress secondary to pulmonary metastasis, the patient's condition deteriorated and was not fit for complete excision treatment. Histopathological investigation of the biopsies, taken from the tumor, revealed that it was undifferentiated small cell carcinoma. Our aim with this paper is to point out that more cases should be reported for more effective diagnosis, histopathological study, clinical investigation, treatment and prognosis of this specific neoplasm
Radiocaesium dispersion and fixation in the lagoon systems of "Ria de Aveiro", Portugal
Radiocaesium (137Cs) dispersion and Cs+ fixation were studied in the sediments collected from the lagoon systems of “Ria de Aveiro”. The Cs+ sorption was tested for the fine mica grains and for the < 2 μm clay fractions extracted from silty clays. The Cs+ exchange is found strongly onto mica-rich fractions than smectite-rich fractions. The distribution coefficient increases if the silty material is constituted by rich-mica clay fractions or if the non-clay minerals are removed from the silty-clay material. The samples studied behave as multisite ion exchange, where Cs+ engages in ion-exchange reactions with hydrated cations on planar sites on expansible layer silicates. Higher concentrations of the 137Cs were found associated with mica-rich silty clays. The 137Cs ranges from 3.2 to 3.9 Bq kg− 1 in the < 38 μm fractions and from 2.9 to 3.3 Bq kg− 1 in the < 64 μm fractions
- …