scholarly journals Observation of Damage of Cotton Fiber in the Processes of Blowing, Cleaning and Carding

2021 ◽  
Vol 320 ◽  
pp. 03009
Author(s):  
Sanjar Tojimirzaev ◽  
Muhammad Sadikov ◽  
Shokhruh Rasulov ◽  
Javohir Mirzaahmedov ◽  
А.F. Plekhanov
Keyword(s):  
Quality Indicators ◽  
Cotton Fiber ◽  
Total Content ◽  
Raw Material ◽  
Technological Processes ◽  
Last Stage ◽  
Carding Machine ◽  
Card Sliver ◽  
Impurities And Defects

The quality of the produced yarn mainly depends on the properties of the raw material, its preparation for spinning, the condition of the equipment, and the preservation of the natural quality of cotton fiber during processing. The question of the number of defects in cotton fiber and their total content is a very important issue for cotton spinning. The non-standardized number of defects in the raw material reduces the quality indicators and yarn yield, which requires additional technological processes; therefore, on the part of production, the requirements for reducing the share of cotton fiber defects are constantly increasing. During processing in blowing and cleaning units and on carding machines, the cotton fiber is mechanically damaged. To observation the damaged fibers, we used the Congo-Roth red paint according to the method of Ch. Dore. Despite the carding is considered the last stage in the process of cleaning the fibers from impurities and defects in the spinning system, 30% of impurities and fiber defects still remain on the card sliver. Besides, it should be noted the carding machine is also considered an additional occurrence of defects, in particular (neps), which reduce the quality indicators of the card sliver and the finished product.

IMPACT OF INNOVATIVE METHOD OF PREPARING TOBACCO LEAVES FOR DRYING ON THE BASIC PARAMETERS OF QUALITY OF TOBACCO RAW MATERIAL

2019 ◽  
Author(s):  
Е.Е. Ульянченко
Keyword(s):  
Chemical Composition ◽  
Quality Indicators ◽  
Raw Materials ◽  
Raw Material ◽  
Tobacco Leaves ◽  
Commercial Grade ◽  
Innovative Method ◽  
Main Indicator ◽  
Basic Parameters

Исследовано влияние приема прорезания средней жилки на основные качественные показатели табачного сырья. Исследования проводили на листьях основных сортотипов табака Трапезонд и Остролист по массовым ломкам. Прорезание жилки осуществляли на инновационном оборудовании экспериментальном образце линии подготовки листьев табака к сушке ЛПТС360 (ВНИИТТИ, Краснодар). Качество табачного сырья с прорезанной жилкой определяли по товарным сортам, технологическим и курительным свойствам, химическому составу по методикам лабораторного контроля ВНИИТТИ. Инновационный способ подготовки табака к сушке в едином потоке с применением технологического оборудования, включающего прорезатель, выявил положительный технологический результат. Установлена эффективность приема прорезания средней жилки: срок естественной сушки листьев с прорезанной жилкой сократился в 2,5 раза выход 1го товарного сорта сырья составил 74,60 87,93 выход волокна сырья с прорезанной жилкой превышает минимальное значение технологических норм (75) в 1,15 1,26 раз условный расход сырья на единицу курительных изделий меньше норматива на 6 25 улучшен основной показатель химического состава табачного сырья (число Шмука) в 1,6 4,6 раза у сортотипа Трапезонд, в 1,2 1,5 раза у сортотипа Остролист дегустационные свойства сырья не ухудшились. Инновационный способ подготовки листьев табака к сушке, включающий прием прорезания средней жилки, рекомендуется для применения в производстве табачного сырья. The influence of middle vein cutting method on the main quality indicators of tobacco raw materials is studied. Studies were carried out on the leaves of the main varieties of tobacco Trapezond and Ostrolist, on mass breakdowns. Vein cutting was carried out on the innovative equipment of the line of preparation of tobacco leaves for drying LPTS360 (GNU VNIITTI RAA, Krasnodar). The quality of tobacco raw materials with a cut vein was determined by commercial grades, technological and Smoking properties, chemical composition in accordance with the methods VNIITTI. An innovative method of preparing tobacco for drying in a single stream with the use of technological equipment, including a cutter, revealed a positive technological result. The period of natural drying of leaves with cut veins decreased by 2,5 times. The yield of the 1st commercial grade of raw materials was 74,60 87,93. The output of the fiber raw material with cut vein exceeds the minimum value of technological norms (75) in 1,15 1,26 times. Conditional consumption of raw materials per unit of Smoking products is less than the norm by 6 25. The method of cutting the middle vein of the leaves improves the main indicator in the chemical composition of tobacco raw materials (Schmuck ratio) 1,6 4,6 times in the variety Trapezond and 1,2 1,5 times in the variety Ostrolist. The tasting properties of raw materials have not deteriorated. Analysis of raw material quality indicators showed that the innovative method of cutting the middle vein is effective and recommended for use in the production of tobacco raw materials.

Effect of Electrostatic Web-Cleaner on Card Sliver Quality

2011 ◽  
Vol 332-334 ◽  
pp. 447-452
Author(s):  
Ji Peng Cao ◽  
Peng Zi Sun
Keyword(s):  
Impurity Content ◽  
Short Fiber ◽  
Fiber Content ◽  
Front Plate ◽  
Carding Machine ◽  
Card Sliver

To find out the effect of the electrostatic web-cleaner installed on the front plate of carding machine on card sliver quality, the sliver produced under different voltages and gauges of electrostatic plate was tested with Uster AFIS. The results show that card sliver quality can be improved when the gauge and voltage are appropriate. When the gauge is 1 mm, parameters of short fiber content, nep content, impurity content are better at a voltage of 1500 V than those of other voltages; when the gauge is 2 mm, a voltage of 500 V or 3500 V is advantageous to improve the comprehensive quality of card sliver (except for impurity content parameter); when the gauge is adjusted to 3 mm, the impurity content is decreased at 1000 V and the nep content is decreased at 2500 V, but the improvement on card sliver quality is not perfect.

scholarly journals Effect of Secondary Raw Material on the Change of Single Extensive Elongation of Non-Woven Fabrics

2020 ◽  
Vol 9 (5) ◽  
pp. 822-824
Keyword(s):  
Cotton Fiber ◽  
Woven Fabrics ◽  
Raw Material ◽  
Single Period ◽  
Spinning Process ◽  
Secondary Raw Material ◽  
Carding Machine ◽  
Period Elongation ◽  
Research Studies

The article describes research studies in the laboratories of the departments of "Spinning Technology" and "Silk Technology". For this purpose were taken samples of cotton fiber and silk waste from the carding machine in the spinning process, 100% cotton fiber waste, 50% cotton fiber, 30% silk, 20% mulberry bark fiber, 70% cotton fiber, 15% silk, 15% mulberry bark fiber, non-woven fabrics were produced from 75% cotton fiber 10% silk 15% mulberry bark fiber blends. The single-period elongation deformation of the obtained non-woven fabrics was determined using the device "Stoyka".

Study on Front Web Cleaner Suction Form of Carding Machine

2011 ◽  
Vol 175-176 ◽  
pp. 514-517
Author(s):  
Xin Guo ◽  
Ming Luo ◽  
Peng Zi Sun
Keyword(s):  
Short Fiber ◽  
Fiber Content ◽  
Effective Length ◽  
Single Side ◽  
Front Plate ◽  
Carding Machine ◽  
Card Sliver

Effect of web cleaner on front plate suction form of carding machine on the quality of card sliver was studied. The card slivers processed by carding machine with web cleaner installed on the front plate using single and double sides suction forms were tested by Premier aQura. The results show that, when the suction volume is between 120~240m3/h, the range of short fiber content in card sliver is 12.03~14.0% in the single side suction and is 15.6~16.8% in the double sides suction; 5% length of fiber in card sliver is between 34.03~34.04mm in the single side suction and is between 33.64~33.83mm in the double sides suction; effective length of fiber in card sliver is from 29.71mm to 29.80mm in the single side suction and is from 29.52mm to 29.55mm in the double sides suction; total neps in card sliver is between 51~55cnt/g in the single side suction and is between 57~59cnt/g in the double sides suction. Thus it can be seen that under the same suction volume, the front web cleaner with single side suction is more beneficial to improving the quality of card sliver, so it is better for the front web cleaner to use single side suction form.

scholarly journals The Quality of Greek Oregano (O. vulgare L. subsp. hirtum (Link) Ietswaart) and Common Oregano (O. vulgare L. subsp. vulgare) Cultivated in the Temperate Climate of Central Europe

Foods ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1671
Author(s):  
Zenon Węglarz ◽  
Olga Kosakowska ◽  
Jarosław. L. Przybył ◽  
Ewelina Pióro-Jabrucka ◽  
Katarzyna Bączek
Keyword(s):  
Essential Oil ◽  
Central Europe ◽  
Phenolic Acids ◽  
Rosmarinic Acid ◽  
Oil Content ◽  
Glandular Trichomes ◽  
Total Content ◽  
Raw Material ◽  
Temperate Climate

The purpose of the study was to determine the differences between two subspecies: O. vulgare L. subsp. hirtum (Link) Ietswaart (Greek oregano) and O. vulgare L. subsp. vulgare (common oregano) growing in cultivation conditions within temperate climate of Central Europe. The characteristic of the subspecies was undertaken in terms of selected morphological parameters and the quality of the raw material. The herb of both subspecies was evaluated on the content and composition of essential oil by hydrodistillation followed by GC-MS and GC-FID (gas chromatography coupled with mass spectrometry and flame ionization detector), the total content of phenolic acids (according to PP 6th ed.) and the content of rosmarinic acid (by HPLC). The sensory evaluation (QDA) was performed, as well. Greek oregano was distinguished by visibly higher number of glandular trichomes on the leaves (up to 4.85 per 1 mm2) followed by higher content of essential oil in the herb (up to 3.36 g × 100 g−1 DW) in comparison to common oregano. Based on the essential oil composition, Greek oregano was classified as mixed carvacrol/γ-terpinene chemotype, while common oregano as mixed sabinyl/cymyl type rich in sesquiterpenes. Greek oregano was also characterized by higher total content of phenolic acids (up to 6.16 g × 100 g−1 DW) and rosmarinic acid (up to 6787.2 mg × 100 g−1 DW) than common oregano. Essential oil content reached the maximum at the beginning of blooming (common oregano) and at the full blooming stage (Greek oregano). In turn, the amount of phenolic acids followed by rosmarinic acid was the highest at the beginning of seed-setting stage, in the case of both subspecies. The differences between subspecies concerning chemical composition (especially essential oil) were reflected in the sensory attributes, where both odor and taste notes were found at higher level for Greek oregano. Results of our work indicate that Greek oregano is well adapted to grow in the temperate zone conditions. Such adaptation was reflected mainly in the satisfied yield and maintaining characters typical for the Mediterranean plant, e.g., a high essential oil content followed by high carvacrol share, traits the most important from practice viewpoint.

scholarly journals CHEMICAL COMPOSITION, ANTIOXIDANT ACTIVITY, AND FATTY ACID PROFILE OF COCOA NIBS

2021 ◽  
Vol 9 (6) ◽  
pp. 168-176
Author(s):  
Fernanda Côrrea Leal Penido ◽  
Isabelle Cristine Ramos Lourenço ◽  
Lívia Mariana da Silva ◽  
Cleverson Fernando Garcia ◽  
Flávia Augusta Guilherme Gonçalves Rezende
Keyword(s):  
Antioxidant Activity ◽  
Fatty Acid ◽  
Chemical Composition ◽  
Fatty Acid Profile ◽  
Reducing Power ◽  
Total Content ◽  
Raw Material ◽  
Cocoa Beans ◽  
High Antioxidant Activity

Cocoa nibs ( cacao L.) are the cocoa beans after being fermented, dried, broken into small pieces, and then toasted. The cocoa nib composition is primordial for producers, industry, and final consumers because it affects the final quality of the raw material and any derivative product. The chemical composition was analyzed using , , , and Scharrer-Kurschner methods. The results showed that the cocoa nibs studied were rich in lipids (44.02 ± 5.22%), followed by carbohydrates (25.30%), raw fiber (12.85 ± 3.67%), protein (10.73 ± 1.80%), and ash content (2.58 ± 0.15%). The fatty acid profile was determined by gas chromatography and showed the presence of , , and acids. The low moisture content (4.52 ± 0.12%) and total acidity (2.25 ± 0.45 NaOH 100 g-1) contributed to the low count of microorganisms, which may give cocoa nibs a longer shelf life. Additionally, it presented high antioxidant activity, with a total content of 843.45 ± 11.85 mg acid / 100 g extract and 89.42 ± 0.02% iron reducing power.

scholarly journals Determining quality of technologies taking into account main production and organizational measures

2020 ◽  
pp. 22-26
Author(s):  
E. M. Zimin ◽  
◽  
V. V. Martishkin ◽  
Keyword(s):  
Quality Indicators ◽  
Technological Process ◽  
Machine Building ◽  
Quality Level ◽  
Technical Documentation ◽  
Technological Support ◽  
Technological Processes ◽  
Main Production ◽  
Generalized Indicator

The article presents the list of singular indicators of technological support of technologies and the method of determining their actual values and their quality levels. According to the results of determining the quality level of technological processes, one of three management decisions can be made. The paper describes singular quality indicators that are directly related to the quality of technological processes in the machine-building industry, at the stage of design and preparation of technical documentation. And also presented are complex quality indicators, based on which determine the generalized indicator of quality of the evaluated technological process. As a result of the work the features of conformity assessment of technological processes and related mandatory requirements are formed. Also described is the process of obtaining a qualitative and quantitative assessment of the quality of the technological process with a detailed description of all necessary formulas

scholarly journals Change Of Cotton Fiber Quality Indicators Under Technological Processes

2021 ◽  
Vol 03 (04) ◽  
pp. 241-249
Author(s):  
Mirjamol Mirkarimovich Mirxojaev ◽  
◽  
Dilmuhammad Davronbek Ogli Atambayev ◽  
Ismoiljon Isroiljon Ogli Lutfillaev ◽  
Jamshidbek Maripjon Ogli Jurayev ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Quality Indicators ◽  
Technological Process ◽  
Cotton Fiber ◽  
Fiber Quality ◽  
Optimal Variant ◽  
Technological Processes ◽  
Cotton Fiber Quality ◽  
Fiber Maturity

In this article, the quality indicators of fiber under the influence of various technological processes of Sultan selection cotton were determined and the optimal variant of the technological process for production was recommended. Basic expressions tangled fiber, cortical fiber, knot, staple mass length, specific tensile strength, fiber maturity.

scholarly journals Content of microorganisms in cereal straw

2017 ◽  
Vol 63 (No. 2) ◽  
pp. 86-90
Author(s):  
Souček Jiří
Keyword(s):  
Water Content ◽  
Total Content ◽  
Energy Sector ◽  
Excessive Amount ◽  
Raw Material ◽  
Cereal Straw ◽  
Wide Range ◽  
Straw Quality ◽  
Microbiological Agents

Straw is an important agricultural raw material with application in agriculture, energy sector and other fields of activity. A major impact on reduction of the straw quality is that of an excessive content of microbiological agents caused by improper storage. By simulation of different conditions of storage the development of microorganisms (moulds and yeasts) was determined in the straw of wheat under different water content. Total content of microorganisms varied in a wide range from 10<sup>3 </sup>up to 10<sup>5</sup> CFU/g. The excessive amount of these microorganisms results not only in a reduction in the quality of raw material due to the development of biodegradable processes, but also causes an increase of hygienic risks in the nearby area.

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