scholarly journals Surface roughness of uncoated particleboards and its relation with the raw material, adhesive and climatic conditions

2009 ◽  
Vol 68 (4) ◽  
pp. 369-372 ◽  
Author(s):  
A. Rolleri ◽  
E. Roffael
Keyword(s):  
Surface Roughness ◽  
Climatic Conditions ◽  
Raw Material

scholarly journals Bioinspired Living Coating System in Service: Evaluation of the Wood Protected with Biofinish during One-Year Natural Weathering

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 701
Author(s):  
Faksawat Poohphajai ◽  
Jakub Sandak ◽  
Michael Sailer ◽  
Lauri Rautkari ◽  
Tiina Belt ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Scots Pine ◽  
Critical Factor ◽  
Climatic Conditions ◽  
Natural Weathering ◽  
Surface Finishing ◽  
Attractive Alternative ◽  
Coating System ◽  
Self Healing ◽  
Wood Protection

The service life performance of timber products exposed to natural weathering is a critical factor limiting the broad use of wood as an external building element. The goal of this study was to investigate the in-service characterization of an innovative biofinish coating system. It is a novel surface finishing solution based on the bioinspired concept of living fungal cells designed for effective wood protection. The performance of Scots pine (Pinus sylvestris L.) wood coated with biofinish was compared with uncoated references. Samples were exposed to natural weathering for 12 months under the climatic conditions of northern Italy. The visual appearance, colour, gloss, wettability, and 3D surface topography of the wood surface were examined. Results revealed that the total colour changes (∆E) of biofinish-coated wood were negligible. Untreated Scots pine wood revealed the changes in colour after just three months of exposure. The gloss changes of both surface types were small. The contact angle measured on biofinish-coated wood was higher compared to that of uncoated Scots pine. Surface roughness increased in uncoated wood due to the erosion effect caused by the weathering progress. Conversely, the surface roughness of biofinish-coated samples decreased along the exposure time. This phenomenon was explained by two self-healing mechanisms: migration of non-polymerized oil to the cracked surface, where it polymerizes and creates a closed layer, and local regrowth to cover damaged spots by living fungal cells present in the coating. The obtained results revealed the superior aesthetic performance of the biofinish surface treatment against natural weathering. By considering the fully bio-based nature of the investigated coating, it was concluded that this solution can be an attractive alternative for state-of-the-art wood protection technologies.

scholarly journals Influence of licopine content in tomatoes on taste qualities of canned goods

2020 ◽  
Vol 62 (5) ◽  
pp. 116-122
Author(s):  
Saida S. Saidova ◽  
Keyword(s):  
Antioxidant Properties ◽  
Food Products ◽  
Climatic Conditions ◽  
Raw Material ◽  
Technical Documentation ◽  
Tomato Fruits ◽  
Duration Of Storage ◽  
Tomato Products ◽  
High Concentrations ◽  
The Impact

The article provides a review of world data on the characteristics of the chemical composition of tomato fruits and the impact on their quality of the soil and climatic conditions of cultivation, varietal characteristics and maturity. It is noted that the current regulatory and technical documentation in the Russian Federation does not provide for the determination of functional substances. It has been shown that tomato fruits are a promising plant-growing raw material for the production of functional food products and directions for obtaining lycopene-containing products, canned foods, in particular, from tomato fruits, have been determined. The types of canned food and tomato products containing the highest concentrations of lycopene have been established. The regularity of increasing the concentrations of lycopene in tomato products with various methods of heat treatment is substantiated. The irreplaceable physiological significance of lycopene for the human body is proved, due to its antioxidant properties and the lack of the possibility of its synthesis. The biochemical nature of lycopene as a carotenoid and pigment is analyzed. The progressive foreign technologies of tomato processing have been studied, allowing to reduce the economic costs of production, increase the duration of storage of products containing extremely high concentrations of lycopene. The necessity of developing domestic food products of physiological importance, available for consumption in baby and diet food, is substantiated. It is proved that the Republic of Dagestan has a high climatic and resource potential for growing hybrid varieties of tomatoes containing high concentrations of lycopene and the mass fraction of dry matter necessary for the rational production of canned tomatoes.

scholarly journals Non-wood plants as raw material for pulp and paper

2001 ◽  
Vol 10 (Supplement) ◽  
Author(s):  
K. SAIJONKARI-PAHKALA
Keyword(s):  
Tall Fescue ◽  
Mineral Content ◽  
Clay Soil ◽  
Organic Soil ◽  
Fertilizer Application ◽  
Climatic Conditions ◽  
Raw Material ◽  
Reed Canary Grass ◽  
Application Rates ◽  
Canary Grass

This study was begun in 1990 when there was a marked shortage of short fibre raw material for the pulp industry. During the last ten years the situation has changed little, and the shortage is still apparent. It was estimated that 0.5 to 1 million hectares of arable land would be set aside from cultivation in Finland during this period. An alternative to using hardwoods in printing papers is non-wood fibres from herbaceous field crops. The study aimed at determining the feasibility of using non-wood plants as raw material for the pulp and paper industry, and developing crop management methods for the selected species. The properties considered important for a fibre crop were high yielding ability, high pulping quality and good adaptation to the prevailing climatic conditions and possibilities for low cost production. A strategy and a process to identify, select and introduce a crop for domestic short fibre production is described in this thesis. The experimental part of the study consisted of screening plant species by analysing fibre and mineral content, evaluating crop management methods and varieties, resulting in description of an appropriate cropping system for large-scale fibre plant production. Of the 17 herbaceous plant species studied, monocotyledons were most suitable for pulping. They were productive and well adapted to Finnish climatic conditions. Of the monocots, reed canary grass (Phalaris arundinacea L.) and tall fescue (Festuca arundinacea Schreb.) were the most promising. These were chosen for further studies and were included in field experiments to determine the most suitable harvesting system and fertilizer application procedures for biomass production. Reed canary grass was favoured by delayed harvesting in spring when the moisture content of the crop stand was 10-15% of DM before production of new tillers. When sown in early spring, reed canary grass typically yielded 7-8 t ha-1 within three years on clay soil. The yield exceeded 10 t ha-1 on organic soil after the second harvest year. Spring harvesting was not suitable for tall fescue and resulted in only 37-54% of dry matter yields and in far fewer stems and panicles than harvested during the growing season. The economic optimum for fertilizer application rate for reed canary grass ranged from 50 to 100 kg N ha-1 when grown on clay soil and harvested in spring. On organic soil the fertilizer rates needed were lower. If tall fescue is used for raw material for paper, fertilizer application rates higher than 100 kg N ha-1 were not of any additional benefit. It was possible to decrease the mineral content of raw material by harvesting in spring, using moderate fertilizer application rates, removing leaf blades from the raw material and growing the crop on organic soil. The fibre content of the raw material increased the later the crop was harvested, being highest in spring. Removing leaf blades and using minimum fertilizer application rates in-creased the fibre content of biomass.;

Study on Permeability Coefficient of Different Bamboo/Fir Veneer Surface

2011 ◽  
Vol 311-313 ◽  
pp. 1634-1637 ◽  
Author(s):  
Li Hong Yao ◽  
Xi Ming Wang ◽  
Ben Hua Fei
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Permeability Coefficient ◽  
Phenolic Resin ◽  
Chinese Fir ◽  
Raw Material ◽  
Important Indicator ◽  
Veneer Surface ◽  
Surface Permeability ◽  
Analysis Models

Permeability coefficient is an important indicator of surface wettability and permeability, which influenced by the surface roughness. In this paper, bamboo and fir veneer as raw material, the contact angle of phenolic resin adhesives in different surface roughness of outer cuticle of bamboo, inner skin of bamboo, tight side of Chinese fir veneer and loose side of Chinese fir veneer were measured, and then use the software Spass non-linear fitting for permeability coefficient, and analysis of variance of the results by SAS software. The results show that permeability coefficient of four different kinds of surface variance analysis models are significantly, permeability coefficient of fir veneer is larger than bamboo surface; permeability coefficient of tight side of fir veneer is larger than loose side; permeability coefficient of inner skin of bamboo is larger than outer cuticle of bamboo. Permeability coefficients decrease first and then increased when mesh sandpaper increasing.

scholarly journals Sweet Basil (Ocimum basilicum L.) Productivity and Raw Material Quality from Organic Cultivation

Agronomy ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 279 ◽  
Author(s):  
Katarzyna Bączek ◽  
Olga Kosakowska ◽  
Małgorzata Gniewosz ◽  
Iwona Gientka ◽  
Zenon Węglarz
Keyword(s):  
Essential Oil ◽  
Open Field ◽  
Microbiological Quality ◽  
Farming System ◽  
Climatic Conditions ◽  
Raw Material ◽  
Conventional Agriculture ◽  
Central European ◽  
Sweet Basil ◽  
Organic Cultivation

Sweet basil is one of the most important culinary herbs. Currently, its production is carried out mainly in accordance with conventional agriculture. However, its cultivation in organic systems seems to be better adjusted to consumer demands connected with the lack of pesticide residues in foods and their safety. In the present study, two methods of basil cultivation in organic farming system were applied, i.e., in the open air and under foil tunnels. During the experiment, in central European climatic conditions, it was possible to obtain four successive cuts of herb. The herb was subjected to chemical analysis, including determination of the content of essential oil, phenolic compounds, and chlorophylls. Gas chromatography coupled with mass spectrometry (GC–MS) and flame ionization detector (GC-FID) analysis of the essential oil was performed, whereas the fresh herb was subjected to sensory analysis. The cumulative mass of fresh herb was distinctly higher in the cultivation under foil tunnels (44.7 kg∙10 m−2) in comparison to the open field (24.7 kg∙10 m−2). The content of essential oil, flavonoids, and phenolic acids was also higher in the raw material collected from plants grown under foil tunnels (0.81, 0.36, and 0.78 g·100g−1 DW, respectively) than from the open field (0.48, 0.29, and 0.59g·100g−1 DW, respectively). In turn, the dominant compound of the essential oil, i.e., linalool, was present in higher amounts in the essential oil obtained from plants cultivated in the open field. The sensory and microbiological quality of herb was comparable for both methods of cultivation. The obtained results indicate that, in central European climatic conditions, it is possible to obtain good-quality yield of basil herb. However, for its better productivity, it seems that cultivation under foil tunnels is preferable.

scholarly journals The Role of Yeasts in Fermentation Processes

2020 ◽  
Vol 8 (8) ◽  
pp. 1142
Author(s):  
Sergi Maicas
Keyword(s):  
Food Processing ◽  
Climatic Conditions ◽  
Raw Material ◽  
Alcoholic Beverages ◽  
Yeast Fermentation ◽  
Fermented Foods ◽  
Food Manufacturing ◽  
Ancient Times ◽  
Global Food

In recent years, vessels have been discovered that contain the remains of wine with an age close to 7000 years. It is unclear whether, in ancient times, humans accidentally stumbled across fermented beverages like wine or beer, or was it a product intended as such. What is a fact is that since then, alcoholic beverages have been part of the diet and culture of many of the civilizations that have preceded us. The typical examples of beer and wine are an example of many other drinks resulting from the action of yeasts. In addition to these two beverages, various companies have developed other types of fermented foods and non-alcoholic beverages prepared in a traditional or commercial manner. The climatic conditions, the availability of raw material and the preferences of each region have conditioned and favored the maintenance of some of these products. In addition to the aforementioned traditional alcoholic beverages produced from fruits, berries, or grains, humans use yeast in the production of chemical precursors, global food processing such as coffee and chocolate, or even wastewater processing. Yeast fermentation is not only useful in food manufacturing. Its uses extend to other products of high interest such as the generation of fuel from vegetable sources.

scholarly journals Technology of plant raw material production with high-ratio selenium for food products manufacturing

2020 ◽  
Vol 161 ◽  
pp. 01032
Author(s):  
Larisa Mayurnikova ◽  
Tatyana Krapiva ◽  
Mikhail Kurakin ◽  
Arkadiy Koksharov ◽  
Dina Shalimova
Keyword(s):  
Food Products ◽  
High Ratio ◽  
Climatic Conditions ◽  
Biologically Active ◽  
Raw Material ◽  
Sweet Clover ◽  
Selenium Content ◽  
Preparation Temperature ◽  
Growth Environment ◽  
Plant Raw Material

The food-borne micronutrient deficiency causes diet-related diseases. The problem is part of great challenges and demands a solution. The human body is the most vulnerable to selenium deficiency. The physiological requirement in this micronutrient is, in one respect, small – 70 mg per day, on the other hand, it causes a number of serious diseases. The experience was obtained of providing the population with micronutrients. It is possible to include biologically active supplements, vitamin and mineral preparations (VMP) into the ration, direct micronutrient supplementation into food products at the production stage, fortification of animal feedstuff, etc. Fortification of plant raw material with selenium during the growing stage was studied. Further, the fortified plant raw material is supposed to be used in prophylactic food products manufacturing. The most common plants with high biologically active substance (BAS) content, including selenium were chosen. They are certified and widely used in pharmacology and food industry. The most prospective concentrator agent is sweet-clover. The fortification technology for hydroponically grown sweet-clover was carried out in laboratory. Growing of the plant was carried out on hydroponics by putting it into the natural environment system. For achieving the optimum the following factors were varied: the content and concentration of the medium; the concentration of selenium preparation; temperature, humidity and dormancy period of the plant. It was established that the plant consumes selenium well in combination with the definite set of biologically active substances from the medium. As compared to the original selenium content (0.312 mg/kg of dry raw material) its quantity reached 3.50±0.80 mg/kg after fortification. Total selenium content in sweet-clover may be forecast with allowances for the preset parameters. It is advisory to continue the research on adapting the plant fortification technology using selenium preparations on commercial scale. The allowances should be made for climatic conditions, supplementation method, strength of the solutions, growth environment.

scholarly journals Potato productivity depending on variety specialties under cultivating in the right-bank Forest-Steppe of Ukraine

2020 ◽  
pp. 120-127
Author(s):  
M. Ostrenko ◽  
L. Pravdyva ◽  
Yu. Fedoruk ◽  
M. Grabovskiy ◽  
S. Pravdyvyi
Keyword(s):  
Animal Feed ◽  
Climatic Conditions ◽  
Raw Material ◽  
Average Weight ◽  
Forest Steppe ◽  
Potato Varieties ◽  
Modern Agriculture ◽  
Abiotic And Biotic Factors ◽  
The Right ◽  
Mass Increase

In terms of geographical distribution and consumption, potatoes occupy one of the leading positions in the structure of food production in Ukraine. It is also used extensively as animal feed. The versatility of use in diff erent sectors of the economy with potatoes cannot be compared to any crop. Potato is of great importance as a raw material for the production of starch, sugar, molasses, alcohol, glucose and etc. A signifi cant reduction in the commodity production of food potatoe in farms is related to the solution a whole complex of important issues, in particular seed production, agro-technology of cultivation, application of highly eff ective pesticides, availability of agricultural machinery and material-technical support. The difficult ecological and energy situation in modern agriculture proves that it is possible to obtain high and stable yields of all crops only if there are varieties in production adapted to diff erent soil and climatic conditions. Variety is one of the important factors of yield stability and fi xed assets of agricultural production. A variety, as a genotype or a set of very close genotypes, exists in a specific environment and, moreover, interacts with it, encountering complex communication, intensity and time of manifestation, abiotic and biotic factors. At the same time, a connection is established between a variety and an environment that infl uences the formation and manifestation of morphological, economic and biological characters. The aim of the research was to study the growth, development and yield of early ripe potato varieties in the rightbank Forest-Steppe of Ukraine. The article presents the results of studies on the cultivation of early ripe varieties of potatoes. Namely, the germination and survival of potato plants was studied, which amounted to 89.5 and 87.3 % in the Skarbnytsa variety, 90.2 and 88.7 % in the Shchedryk variety, and 88.6 and 86.5 % in the Dnipryanka variety; the number of formed stems per plant is calculated, which is 3.3 in the Skarbnytsa variety, 3.6 in the Shchedryk variety and 2.7 in the Dniprianka variety. The dynamics of the mass increase and the fractional composition of potato tubers are shown. On average, during the research, the average weight of tubers from the bush was high for the Shchedryk variety and amounted to 616.2 g, somewhat less than those for the Skarbnytsa (484,5 g) and Dniprianka (397,8 g) varieties. It was established that the Shchedryk variety had the highest potato productivity in the experiment – 250.3 c/ha, in the Skarbnytsa and Dnipryanka varieties, the yield was 210.0 and 201.2 c/ha, respectively. Key words: potato, varieties, plant survival, tubers weight, productivity.

scholarly journals Functional value of a talgan made from sprouted wheat and barley

2021 ◽  
Vol 83 (1) ◽  
pp. 163-168
Author(s):  
A. V. Sumina ◽  
V. I. Polonskiy ◽  
T. M. Shaldaeva
Keyword(s):  
Total Content ◽  
Barley Grain ◽  
Climatic Conditions ◽  
Point Of View ◽  
Raw Material ◽  
National Product ◽  
Bidistilled Water ◽  
Functional Value ◽  
Germination Process ◽  
The Republic

The aim of this study was to analyze the total content of antioxidants (TCA) at different stages of production of the Khakass national product talgan, made from sprouted wheat and barley. Grain crops were grown on the territory of the Bey district of the Republic of Khakassia, which is characterized by favorable climatic conditions from the point of view of growing grain with an increased content of antioxidants. To determine the TCA value in the grain, two solvents were used – hot bidistilled water and 70% ethanol. The TCA measurement was performed on the device "Color Yauza-01-AA". Among all the grain samples studied, higher values were recorded when using hot bidistilled water as an eluent. It was found that the germination process did not reduce the taste qualities of the grain product. The value of the TCA in talgan, made on the basis of sprouted barley grain, was higher in comparison with wheat by 34%. The effect of increasing the level of TCA in the product in comparison with the initial raw material after the stage of grain germination in wheat and barley, respectively, by 1.5 and 2 times, and after the stages of roasting and grinding by 2 and 2.5 times. The value of FSA in bran exceeded that in the original grain by 44 and 65% for wheat and barley, respectively. Thus, as a result of the research, it was found that regardless of the studied crop (wheat, barley), the process of germination of grain is one of the effective ways to increase the value of TCA in the talgan product made on its basis.

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