scholarly journals Effect of greenhouse conditions on Zn, Fe and Cu content in tomato fruits

2005 ◽  
Vol 50 (2) ◽  
pp. 101-105
Author(s):  
Vukasin Bjelic ◽  
Djordje Moravcevic ◽  
Damir Beatovic
Keyword(s):  
Chemical Composition ◽  
Iron Content ◽  
Copper Content ◽  
Field Trials ◽  
Field Conditions ◽  
Summer Period ◽  
Tomato Fruits ◽  
Cu Content ◽  
Spring Period ◽  
Ripe Tomato

Tomato investigations were carried out under greenhouse and field conditions. The aim was to determine the extent to which greenhouse conditions influence the chemical composition of tomato fruits. Plants grown under field conditions were used as the control. Tomato trials were performed during different periods. Greenhouse trials were carried out in the winter and the spring period (January-June), and field trials in the spring and the summer period (May-September). Zinc (Zn), iron (Fe) and copper (Cu) content was established in ripe tomato fruits. Greenhouse conditions were found to effect zinc and iron content in tomato, whereas copper content was unaltered.

scholarly journals Evaluation of quality measurement of Olomouc cake of cheese (Olomoucké tvarůžky) during ripening

2012 ◽  
Vol 60 (5) ◽  
pp. 205-210 ◽  
Author(s):  
Daniela Strnadová ◽  
Hana Konečná ◽  
Miroslav Jůzl
Keyword(s):  
Chemical Composition ◽  
Chemical Analysis ◽  
Manufacturing Process ◽  
Dry Matter ◽  
Quality Measurement ◽  
Titratable Acidity ◽  
Summer Period ◽  
Brevibacterium Linens ◽  
Spring Period

Olomouc cake of cheese (Olomoucké tvarůžky) is smear-ripened cheese, which is produced from sour industrial curd. Brevibacterium linens, which are added during the production process, are reproducing and make gold-yellow smear cover. The aim of this work was to assess the chemical analysis of the quality of Olomouc cake of cheese. Changes in chemical composition were evaluated during different stages of production and at the same time it was detected whether changes in chemical composition during the manufacturing process are same in spring as well as in summer, without statistically significant differences. Dry matter of Olomouc cake of cheese was ranged from 35 % to 39 %. The increase of dry matter during production is evident, but these changes were in the most cases not statistically signifiant (P > 0.05). The value of titratable acidity of the cheese considerably changes during the manufacturing process, it has a decreasing tendency. Titratable acidity of cheese after shaping was 106.64 (136.12) SH and at the end of life it was 49.91 (65.06) SH. These changes were very highly statistically significant (P < 0.001). Increasing the dry matter of cheese is also proportionatelly increase content of salt in cheese, although this changes are not statistically significant (P > 0.05) in cheese from summer period. Content of salt is increased from 5.30 % to 5.98 %, respectively 6.10 %. In spring period the oposite changes in most cases occured (P < 0.001), it is increased from 4.27 % to 6.20 %, respectively 6.94 %. When the chemical composition of the cheese in spring and in summer period is compared, there are no significant changes (P > 0.05).

Surface Defect on Hot Rolled Steel Sheet with Cu Content

2014 ◽  
Vol 782 ◽  
pp. 239-242
Author(s):  
Lucia Hrabčáková ◽  
Jaroslav Duška ◽  
Alica Mašlejová
Keyword(s):  
Chemical Composition ◽  
Copper Content ◽  
Life Time ◽  
Furnace Operation ◽  
Basic Material ◽  
Metallographic Analysis ◽  
Copper Particles ◽  
Cu Content ◽  
Sheet Surface ◽  
Reheat Furnace

Structural steel grades S235JRCCu+N and S355JRCCu+N with 0.25 – 0.35% copper content are intended for products with increased corrosion resistance. They are used for railcar and container bodies. The low copper alloying strongly increases the material life-time in the conditions of atmospheric corrosion. Sheets with fine sharp needle-type bodies on both sheet surfaces were delivered for the analysis. As per the customer information, they were present on almost whole length of on cast strips. Considering the steel copper content, it was assumed that the improper steel alloying was the reason of imperfection. Chemical composition results didn’t confirm this expectation. Metallographic analysis should determine the imperfection origin and decide if copper presence was the primary factor of it. The analyses using SEM coupled with EDS analyzer have shown that the sliver-type defects, few millimeters long bands of ductile iron oxides, were present in very small material depth of about 50 – 150 μm in the analyzed material The bands were formed in more layers parallel to the sheet surface; their thickness was similar to the thickness of surface scales. Oxidic material under the sliver had the same micro-morphology and chemical composition like the scales on the sheet surface. Very fine globular copper particles were randomly and very sporadically present in the layer of ductile oxides in slivers and also in surface scale. Besides this, the material in defect area was chemically homogeneous and no particles were found in the layer boundaries. Copper particles were not detected in the steel basic material; the copper was dissolved in the matrix. The nature of imperfection was typical for V-shaped slivers, caused by overheating sheet surface in reheat furnace. After revising technical conditions of reheat furnace operation, this imperfection type was suppressed.

scholarly journals COR/LEA Proteins as Indicators of Frost Tolerance in Triticeae: A Comparison of Controlled versus Field Conditions

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 789
Author(s):  
Klára Kosová ◽  
Miroslav Klíma ◽  
Ilja Tom Prášil ◽  
Pavel Vítámvás
Keyword(s):  
Cold Acclimation ◽  
Field Experiments ◽  
Quantitative Relationship ◽  
Field Trials ◽  
Frost Tolerance ◽  
Late Embryogenesis Abundant ◽  
Field Conditions ◽  
Lea Proteins ◽  
Winter Cereals ◽  
Vernalisation Requirement

Low temperatures in the autumn induce enhanced expression/relative accumulation of several cold-inducible transcripts/proteins with protective functions from Late-embryogenesis-abundant (LEA) superfamily including dehydrins. Several studies dealing with plants grown under controlled conditions revealed a correlation (significant quantitative relationship) between dehydrin transcript/protein relative accumulation and plant frost tolerance. However, to apply these results in breeding, field experiments are necessary. The aim of the review is to provide a summary of the studies dealing with the relationships between plant acquired frost tolerance and COR/LEA transcripts/proteins relative accumulation in cereals grown in controlled and field conditions. The impacts of cold acclimation and vernalisation processes on the ability of winter-type Triticeae to accumulate COR/LEA proteins are discussed. The factors determining dehydrin relative accumulation under controlled cold acclimation treatments versus field trials during winter seasons are discussed. In conclusion, it can be stated that dehydrins could be used as suitable indicators of winter survival in field-grown winter cereals but only in plant prior to the fulfilment of vernalisation requirement.

scholarly journals Structure and ecological peculiarities of algoflora of rock-forming soils of coal dumps in Donetsk region

2013 ◽  
pp. 379-387
Author(s):  
Mykola Chajka ◽  
Iryna Mal’tseva
Keyword(s):  
Key Words ◽  
Coal Mining ◽  
Soil Algae ◽  
Summer Period ◽  
Spring Period

As a result of the investigation of algogroups of coal-mining workings of mine administration “Zahidne” 44 species of algal from five departments (Cyanophyta, Chlorophyta, Bacillariophyta, Xanthophyta, Eustigmatophyta) were revealed. The coefficients of mesophility and xerophylity are calculated. The general spectrum of vital forms of algae species in spring period is represented by formula Ch14B5X3H2C2P1 (27), in summer period – Ch9P8B7X4H4C2V1CF1 (36). Key words: coal dump, soil algae, vital forms.

Stability of cabergoline in fox baits in laboratory and field conditions

2007 ◽  
Vol 34 (3) ◽  
pp. 239 ◽  
Author(s):  
Stuart McLean ◽  
Susan Brandon ◽  
Roger Kirkwood
Keyword(s):  
High Performance ◽  
Acetic Acid Solution ◽  
Hydrolysis Product ◽  
Fertility Control ◽  
Field Trials ◽  
Control Agent ◽  
Field Conditions ◽  
Dry Conditions ◽  
The Stability ◽  
Fox Control

Cabergoline is a potent inhibitor of prolactin release and a potential fertility control agent for foxes. To understand how cabergoline could behave in baits deployed for fox control, we conducted laboratory and field trials to investigate the stability of cabergoline when (1) in solution, (2) injected into a bait (deep-fried liver and Foxoff®) and (3) exposed to a range of environmental conditions, including burial. Cabergoline, dissolved in a 1% acetic acid solution, and its carboxylic acid hydrolysis product can be assayed using high-performance liquid chromatography. When stored at 4°C and at room temperature, cabergoline in solution was stable for up to 36 days. When stored under cool (≤15°C), dry conditions, cabergoline (800 µg) in commercial Foxoff® and deep-fried ox-liver baits was stable for 28 and 7 days, respectively; stability was reduced by increases in temperature (tested up to 40°C) and humidity. Recovery of cabergoline from buried baits exposed to a range of field conditions decreased rapidly in the first week, but after 56 days remained detectable at levels of 6–22% of the injected amounts. This study has important implications for baiting campaigns that use cabergoline for fox control.

Genetic characteristics and QTL analysis of the soluble sugar content in ripe tomato fruits

2021 ◽  
Vol 276 ◽  
pp. 109785
Author(s):  
Yao Tang ◽  
Jing Ren ◽  
Chunxin Liu ◽  
Jingbin Jiang ◽  
Huanhuan Yang ◽  
...  
Keyword(s):  
Qtl Analysis ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Tomato Fruits ◽  
Genetic Characteristics ◽  
Soluble Sugar Content ◽  
Ripe Tomato

scholarly journals Crystallization Features of Amorphous Rapidly Quenched High Cu Content TiNiCu Alloys upon Severe Plastic Deformation

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2670
Author(s):  
Alexander Glezer ◽  
Nikolay Sitnikov ◽  
Roman Sundeev ◽  
Alexander Shelyakov ◽  
Irina Khabibullina
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Copper Content ◽  
Melt Spinning ◽  
High Pressure Torsion ◽  
Amorphous State ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Cu Content ◽  
Rapid Melt Quenching

In recent years, the methods of severe plastic deformation and rapid melt quenching have proven to be an effective tool for the formation of the unique properties of materials. The effect of high-pressure torsion (HPT) on the structure of the amorphous alloys of the quasi-binary TiNi–TiCu system with a copper content of more than 30 at.% produced by melt spinning technique has been analyzed using the methods of scanning electron microscopy, X-ray diffraction analysis, and differential scanning calorimetry (DSC). The structure examinations have shown that the HPT of the alloys with a Cu content ranging from 30 to 40 at.% leads to nanocrystallization from the amorphous state. An increase in the degree of deformation leads to a substantial change in the character of the crystallization reflected by the DSC curves of the alloys under study. The alloys containing less than 34 at.% Cu exhibit crystallization peak splitting, whereas the alloys containing more than 34 at.% Cu exhibit a third peak at lower temperatures. The latter effect suggests the formation of regions of possible low-temperature crystallization. It has been established that the HPT causes a significant decrease in the thermal effect of crystallization upon heating of the alloys with a high copper content relative to that of the initial amorphous melt quenched state.

Expression of Lipoxygenase and Hydroperoxide Lyase Activities in Tomato Fruits

1992 ◽  
Vol 47 (5-6) ◽  
pp. 369-374 ◽  
Author(s):  
Akikazu Hatanaka ◽  
Tadahiko Kajiwara ◽  
Kenji Matsui ◽  
Akira Kitamura
Keyword(s):  
Linoleic Acid ◽  
Uv Irradiation ◽  
Tissue Specificity ◽  
Tomato Fruit ◽  
Hydroperoxide Lyase ◽  
Tomato Fruits ◽  
Low Level ◽  
Ripe Tomato

The distribution (or locarization) of lipoxygenase (LOX) and hydroperoxide lyase (HPO lyase) activities in ripening and ripe tomato fruits was investigated. The highest LOX activity existed between skin and outer flesh of tomato fruits. HPO lyase showed no tissue specificity. LOX specifically formed linoleic acid 9-E, Z-hydroperoxide (9-E, Z-HPO) from linoleic acid (LA), whereas HPO lyase specifically cleaved 13-Z, E-HPO. Although a low level (0.36 ± 0.069 nmol/g fr. wt.) of hexanal was detected in the intact tomato fruit, HPOs were not detected. When a tomato fruit was injured by cutting it into 8 fragments and incubated at 25 °C, hexanal increased to 1.642 nmol/g fr.wt. by 30 min. By homogenizing at pH 6.3, hexanal increased to 21.1 nmol/g fr.wt. during a 30 min incubation. UV irradiation of tomato fruits also increased the formation of hexanal. From these results, LOX and HPO lyase are considered to exist as latent forms and to begin the expression of the activity upon injury.

scholarly journals Bioassay-Guided Isolation and HPLC Determination of Bioactive Compound That Relate to the Antiplatelet Activity (Adhesion, Secretion, and Aggregation) fromSolanum lycopersicum

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Eduardo Fuentes ◽  
Ricardo Castro ◽  
Luis Astudillo ◽  
Gilda Carrasco ◽  
Marcelo Alarcón ◽  
...  
Keyword(s):  
Platelet Aggregation ◽  
Thrombus Formation ◽  
Bioactive Compound ◽  
Reversed Phase ◽  
Antiplatelet Activity ◽  
Total Extract ◽  
Tomato Fruits ◽  
Adenosine Concentration ◽  
Ripe Tomato ◽  
By Products

In seeking the functionality of foodstuff applicable to medicine, ripe tomato fruits were found to show an antiplatelet activity. Therefore, the bioactive compound was isolated, structurally identified, and studied for an inhibitory effects on platelet adhesion, secretion, and aggregation. The concentration of adenosine in ripe tomato fruits (pulp and skin extracts) and its processing by-products (paste and pomace) was determined by reversed-phase high-performance liquid chromatography (HPLC). According to platelet aggregation inhibition induced by ADP, the total extract residual was fractionated by liquid-liquid separation, obtaining aqueous, ethyl acetate and petroleum ether extracts. The aqueous extract was subjected to repeated permeation over sephadex LH-20 and semipreparative TLC. The isolate finally obtained was identified as adenosine on the basis of ESI-MS,1H NMR, HPLC, and UV spectra. Adenosine concentration dependently (2.3–457 μM) platelet aggregation inhibited induced by ADP. Also, adenosine present inhibition of platelet secretion and thrombus formation under flow conditions. The quantitative HPLC analysis revealed significant amounts of adenosine in ripe tomato fruits and its processing by-products. From these results, extracts/fractions of ripe tomato fruits and their processing by-products may be referred to as functional food and functional ingredients containing a compound that inhibits platelet function with a potent preventive effect on thrombus formation, as those that occur in stroke.

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