Raw Materials Research Articles

Apparel Supply Chain Management and Practice under the Perspective of Sustainable Development

Abstract: This study explores the challenges faced by the apparel industry and the means of attaining sustainable development via effective supply chain management amidst the backdrop of global economic integration and the evolving information technology landscape.Firstly, the current situation of the apparel industry is analyzed, including factors such as the increase in consumers' personalized demands, the increasingly fierce competition, the rising costs of labor and raw materials, and the growing consciousness of environmental preservation. The development status and problems of apparel supply chain management are then analyzed, including the excessively long supply chain, the lack of flexibility and adaptability in management, the opacity of information, the lack of a supplier evaluation system, and the neglect of sustainable development by enterprises. It further discusses achieving sustainable development in the apparel industry, including reducing water consumption and pollution, addressing the adverse consequences arising from the rapid turnover of fashion trends, promoting the construction of a circular supply chain, etc. Corresponding solutions are proposed. Finally, this study concludes how supply chain management and sustainable development practices can inject new vitality into apparel enterprises and achieve the industry's sustainable development goals.

Study on changes of bioactive substances and flavour characteristics during fermentation of jujube vinegar

SummaryJujubes are an excellent source of sugar and nutrients, making them well‐suited for fermentation. Previous research on jujubes has primarily focused on their use in fermented beverages and fruit wines, but their potential for vinegar production has not been sufficiently explored. Therefore, this study produced jujube vinegar from jujube as raw material using microbial fermentation technology, and the changes in bioactive substances and volatile components during different fermentation stages were monitored. Results revealed that the primary organic acids in jujube vinegar were acetic acid, malic acid and lactic acid. The levels of phenolic compounds, such as epicatechin and ferulic acid, increased significantly by 3.5‐fold and 3.2‐fold, respectively, after acetic fermentation, resulting in an improvement in antioxidant activity. In addition, a total of seventy‐three volatile substances were detected in jujube vinegar, with acids accounting for 72.13% of the overall content. Isoamyl alcohol, ethyl phenylacetate, benzaldehyde and 3‐hydroxy‐2‐butanone were also the principal flavour compounds of jujube vinegar, which are the main source of its intense flavour. This study reveals the dynamic law of nutrients and flavour compounds during the fermentation process of jujube vinegar. The findings provide a theoretical reference and practical basis for the production of jujube vinegar.

Atomically Asymmetrical Ir–O–Co Sites Enable Efficient Chloride‐mediated Ethylene Electrooxidation in Neutral Seawater

The chloride‐mediated ethylene oxidation reaction (EOR) of ethylene chlorohydrin (ECH) via electrocatalysis is practically attractive because of its sustainability and mild reaction conditions. However, the chlorine oxidation reaction (COR), which is essential for the above process, is commonly catalyzed by dimensionally stable anodes (DSAs) with high contents of precious Ru and/or Ir. The development of highly efficient COR electrocatalysts composed of nonprecious metals or decreased amounts of precious metals is highly desirable. Herein, we report a modified Co3O4 with a single‐atom Ir substitution (Ir1/Co3O4) as a highly efficient COR electrocatalyst for chloride‐mediated EOR to ECH in neutral seawater. Ir1/Co3O4 achieves a Faradaic efficiency (FE) of up to 94.8% for ECH generation and remarkable stability. Combining experimental results and density functional theory (DFT) calculations, the unique atomically asymmetrical Ir‐O‐Co configuration with a strong electron coupling effect in Ir1/Co3O4 can accelerate electron transfer to increase the reaction kinetics and maintain the structural stability of Co3O4 during COR. Moreover, a coupling reaction system integrating the anodic chloride‐mediated and cathodic H2O2‐mediated EOR show a total FE of ~170% for paired electrosynthesis of ECH and ethylene glycol (EG) using ethylene as the raw material. The technoeconomic analysis highlights the promising application prospects of this system.

Nutritional Value Evaluation of New Pea Genotypes (Pisum sativum L.) Based on Their Chemical, Amino Acids and Dietary Fiber Composition

This research concerned the assessment of the utility value of new pea breeding materials intended for registration in the European Union. The research material consisted of sixteen breeding lines and four reference pea varieties. The evaluation was carried out based on the chemical composition of seeds and its variability within the studied genotypes. The contents of protein, starch, lipids, ash and dietary fiber (DF) were determined. The nutritional value of the protein was assessed in vitro using the value of the limiting amino acid index chemical score (CS) and the integrated essential amino acid index (EAAI). The analyzed pea genotypes were characterized by significant diversity in terms of the content of the tested components. The obtained results combined with the PCA analysis were used to select pea genotypes of the highest quality, having the potential as a raw material for the production of food with health-promoting properties. The effect of the conducted research was the identification of three pea genotypes with the greatest potential in terms of protein content and dietary fiber complex.

Structural Characteristics of Active Quicklime Flux and Optimization of Quasiparticle Granulation Performance in Thick‐Bed Sintering

The deterioration of sintering bed permeability is an important factor that hinders thick‐bed sintering. Flux is one of the key factors that determines the bonding degree of quasiparticles. Selecting high‐quality flux is an effective way to improve both the permeability and thickness of the sintering bed. Herein, the hydration activity of quicklime flux is used as a criterion to assess quality. Two types of quicklimes with different activity levels are selected for comparative analysis in three aspects: microstructure, sinter quasiparticle granulation performance, and the sinter mineralization process. The experimental results show that active quicklime has a higher CaO content and fewer impurities. The small and dense CaO particles give active quicklime significant advantages in raw material granulation and sinter mineral formation. The application of active quicklime can effectively improve the permeability of the sintering bed; notably, the drying fines’ removal rate decreases from 22.81% to 2.42% with an increase in the ratio of active quicklime addition. However, this affects the average particle size of quasiparticles. To address this issue, solutions are determined by adjusting the condition parameters. It is concluded that active quicklime plays an important role in enhancing the permeability of the sintering bed during thick‐bed sintering production.

Fruit and vegetable waste as a raw material for obtaining functional antioxidants and their applications: A review of a sustainable strategy

AbstractThe growing concern about environmental sustainability and increasing fruit and vegetable waste (FVW) generation have stimulated research into their potential valorization. This paper explores using this type of waste to obtain beneficial antioxidants in various fields of study. It is imperative to delve into the problems associated with FVW, shedding light on the staggering amounts generated and the environmental and economic challenges of waste disposal. The biochemical composition of FVW reveals the diverse array of components present, such as carbohydrates, proteins, lipids, vitamins, minerals, and of course antioxidants, which can be obtained through different extraction methods, depending on the conditions, the efficiency and the purpose that is required during the process of separation of these compounds from the organic matter. Antioxidants are compounds that can neutralize free radicals, which contributes to combating various conditions and diseases to promote and preserve human health. Several groups of antioxidants have been described, such as polyphenolic compounds in significant amounts in plant biomass as FVW. These antioxidants demonstrate benefits, efficacy and potential applications in industries like medicine, cosmetics, pharmaceuticals and functional foods. The valorization of FVW as a source of antioxidants presents a promising avenue for sustainable waste management and the production of natural antioxidants. This approach contributes to environmental preservation and promotes circular economy principles by transforming waste into valuable resources. This paper provides valuable insights into the vast potential of FVW valorization for antioxidant production and its application across diverse industries.

Leveraging Spruce Bark Particle Morphology for Enhanced Internal Bonding in Particleboard Production

The continuous rise in global demand for wood products has led to an increase in prices and a surge in research into alternative resources. As a byproduct of the timber industry, bark has emerged as a promising supplement in particleboard (PB) production. However, its anatomical structure, the presence of extractives, and its inferior mechanical properties complicate the production process, which have not yet been fully overcome at a commercial scale. This study proposes a paradigm shift, advocating for separate and specialized bark constituent processing in a wet state. Three bark-based raw materials—namely, outer bark particles, bark fiber clumps, and bark fibers—were investigated under varying wood content scenarios. PBs with a target density of 0.7 g/cm3 and a thickness of 16 mm were produced using mixtures of these bark-based materials and wood particles in different ratios bonded with a urea–formaldehyde adhesive. The results demonstrated that these bark constituents exhibit distinct properties that can be optimized through tailored processing techniques. Compared to bark fibers, outer bark particles displayed about 40% lower water absorption and thickness swelling. However, bark fibers improved the internal bond by about 50% due to their favorable morphology compared to outer bark. These findings highlight the potential of bark as a valuable resource for particleboard production and pave the way for its efficient utilization through specialized processing strategies.

Chemical Composition of Acid Soluble Collagen (ASC) Isolated from Indonesia Local “Kacang” Goat Skin (<i>Capra aegagrus hocus</i>)

Collagen from the local "Kacang” goat skin is a natural raw material in the halal food industry in Indonesia. This study aims to isolate acid-soluble collagen (ASC) from “Kacang” goat skin and characterize its chemical properties. The collagen was derived from one-year-old goat skin and cured in acid condition for 48 hours at 4°C to eliminate meats, fat, and hair. The cleaned skins were treated at 1:10 (w/v) of 0.1 M NaOH for 0, 24, and 48 h at 4°C. It was then neutralized in distilled water and extracted with 0.5 M acetic acid at a 1:10 (w/v) ratio for 24, 48, and 72 h at 4°C. The yield of ASC was 21%, characterized by chemical composition, soluble protein, differential scanning calorimeter (DSC), and protein molecular weight. The chemical composition of ASC was 11.15% (moisture), 9.04% (protein), 0.98% (fat), and 0.052% (ash). ASC has the highest collagen solubility in NaCl 5% at pH 2. ASC also has thermal stability with a low profile pattern of molecular weight. In conclusion, “Kacang” goat skin from Indonesia might be used to make a value-added product because it has a high moisture content and low fat level.

Research on Optimizing the Carbon Footprint of Products Based on Identifier Resolution

Abstract: This article takes a certain refrigerator of Haier Company as the research object and conducts an in-depth discussion on its carbon footprint throughout the full lifecycle. To achieve accurate tracking and calculation of the carbon footprint of the refrigerator's full lifecycle, this article adopts Handle and Ecode identification and resolution technologies. It establishes corresponding identification coding rules for key points throughout the lifecycle of refrigerator production, transportation, usage, and recycling, and designs a set of identification coding schemes for each stage of the refrigerator from raw material acquisition to recycling. Based on this identification coding scheme, this article calculates in detail the carbon footprint of the refrigerator at each stage of its full lifecycle. Based on the calculated carbon footprint data, it gains a deep understanding of the distribution of the carbon footprint of the refrigerator product and proposes a series of targeted optimization strategies. This research provides a powerful reference for the green development of the home appliance industry and promotes its development towards a more environmentally friendly and sustainable direction.

Recovery and partial isolation of ⍺-mangostin from mangosteen pericarpsvia sequential extraction and precipitation.

This study introduced an innovative sequential extraction methodology designed for the efficient recovery of alpha-mangostin (⍺-M) from mangosteen pericarps. Alpha-mangostin, renowned for its pharmacological properties including anti-inflammatory, anti-cancer, and anti-bacterial effects, has garnered significant attention across diverse industries. The proposed method of sequential extraction achieved 73% recovery and a yield of 46.75 mg/g based on the weight/weight percentage of the mass of ⍺-M extracted from the sequence and the mass of raw material. Furthermore, the purity of the dried product was 67.9%. The sequence solvent extraction system, comprising water, hexane, and acetonitrile, plays a pivotal role in enhancing the efficacy of the extraction process. Notably, this methodology offers a cost-effective alternative to conventional extraction methods. It reduces the need for complex equipment and processes, positioning it as a resource-efficient extraction technique in comparison to existing methodologies. This novel sequential extraction method presents a promising avenue for the economical and sustainable recovery of alpha-mangostin (⍺-M) from pericarps.

High keratinase and other types of hydrolase activity of the new strain of Bacillus paralicheniformis.

Keratinases, a subclass of proteases, are used to degrade keratin thereby forming peptones and free amino acids. Bacillus paralicheniformis strain T7 was isolated from soil and exhibited high keratinase, protease, collagenase, amylase, xylanase, lipase, and phosphatase activities. Keratinases of the strain showed maximum activity at 70°C and pH 9.0 as well as high thermal stability. A mass-spectrometric analysis identified seven peptidases with molecular masses of 26.8-154.8 kDa in the secretory proteome. These peptidases are members of S8 and S41 serine peptidase families and of M14, M42, and M55 metallopeptidase families. Additionally, α-amylase (55.2 kDa), alkaline phosphatase (59.8 kDa), and esterase (26.8 kDa) were detected. The strong keratinolytic properties of the strain were confirmed by degradation of chicken and goose feathers, which got completely hydrolyzed within 4 days. Submerged fermentation by strain B. paralicheniformis T7 was carried out in a pilot bioreactor, where the highest keratinase production was noted after 19 h of cultivation. After the fermentation, in the culture fluid, the keratinase activity toward keratin azure was 63.6 ± 5.8 U/mL. The protease activity against azocasein was 715.7 ± 40.2 U/mL. The possibility of obtaining enzyme preparations in liquid and powder form was demonstrated, and their comparative characteristics are given. In the concentrate, the keratinase, protease, α-amylase, phosphatase, and esterase/lipase activities were 2,656.7 ± 170.4, 29,886.7 ± 642.9, 176.1 ± 16.3, 23.9 ± 1.8, and 510.9 ± 12.2 U/mL, respectively. In the lyophilizate, these activities were 57,733.3 ± 8,911.4, 567,066.7 ± 4,822.2, 2,823.0 ± 266.8, 364.2 ± 74.8, and 17,618.0 ± 610.3 U/g, respectively. In the preparation obtained by air flow drying at 55°C, these activities were 53,466.7 ± 757.2, 585,333.3 ± 4,277.1, 2,395.8 ± 893.7, 416.7 ± 52.4, and 15,328.1 ± 528.6 U/g, respectively. The results show high potential of B. paralicheniformis strain T7 as a producer of keratinases and other enzymes for applications in agricultural raw materials and technologies for processing of keratin-containing animal waste.

Progress and prospects in the molecular basic research on important traits in sorghum

Sorghum (Sorghum bicolor) is a significant crop serving food, energy, feed, and industrial raw materials, featuring extensive growth adaptability and diverse utility values. Despite the achievements in sorghum breeding in the last decades, conventional breeding methods still confront challenges such as lengthy breeding cycles, low efficiency, and complex genetic backgrounds. With the rapid advancement of molecular biology, genetics, and bioinformatics, molecular breeding has carved new pathways for enhancing sorghum yield and quality. This article reviews the molecular basic research progress in the key agronomic and adaptive traits of sorghum, including grain yield, grain quality, flowering time, plant height, tillering, stress resistance, and male sterility, and discusses future research priorities, offering novel insights and approaches for sorghum breeding.

Investment Analysis of the Manufacturing Industry Sector During the Industrial Revolution 4.0 on Provincial PDRB in Indonesia

During the ten-year period, the manufacturing industry sector has become a sector that contributes to economic growth in Indonesia. However, the distribution of GRDP in each island of Indonesia has not been maximized, this shows that the natural resources owned have not been utilized optimally, industries still tend to only supply raw materials which are then marketed abroad and in the end we buy them back at a higher price. The reason is that the application and use of advanced technology has not been maximized, especially at this time when the industry has entered the Industrial Revolution 4.0. This study aims to see the effect of advanced technology consisting of Internet Users, Software, Machinery and Equipment and Education Level on GRDP in Indonesia. The data used is secondary data from 2017-2021. The type of data in this study is panel data. The analysis technique in this study is the panel data regression technique with the Ordinary Least Square (OLS) method of the e-views 10 program. The results of this study indicate that machinery & equipment, internet users, software and education level together have a simultaneous relationship to the GRDP of Provinces in Indonesia. The variables Machinery and Equipment, Software and Internet Users have a positive and significant influence on the GRDP variable of Provinces in Indonesia. Meanwhile, the level of education has a negative influence on the GRDP of provinces in Indonesia. Keywords: Provincial GRDP in Indonesia, Manufacturing Industry, Software, Machinery and Equipment, Education Level and Internet Users

Technological Aspects of using 3D Printing Software in Construction

The relevance of introducing additive technologies of 3D printing in construction is to decrease the technological cycle of construction, and minimize expenditure and material costs, while reducing the duration of the development planning process and execution, eliminating inaccuracies and defects, as well as optimizing and automate the process. The technological aspect of 3D printing lies in the optimal selection of parameters based on the created 3D model using effective software. The purpose of the study is to determine the quality indicators of bricks obtained by 3D printing from special concrete. The approach to investigating this matter is rooted in ascertaining the compressive strength of concrete through non-invasive testing techniques, gauging the density of concrete using measurement methods, and validating the efficacy of integrating 3D printing technologies in construction by the method of comparative analysis. The effectiveness of introducing additive technologies of 3D printing was proven drawing upon quality indicators of concrete obtained on a 3D printer which meets all the requirements necessary for its implementation in the construction field. The selected characteristics of concrete compressive strength are fundamental to the basics of selecting a brand of concrete to be utilized in construction. The selected software demonstrated the capacity to generate flawless 3D designs. The result of the study shows a significant reduction in the number of workers involved in the construction process by 38–45%, depending on the chosen method of using 3D printing; a decrease of construction time by 33–42% when printing individual elements, blocks used in production, and by 61–72% when using a printer directly on the construction site; reduction of raw materials costs by 14–28%; as well as reduction of construction downtime by 25%. The results obtained indicate the need to develop and enhance progressive additive technologies for 3D printing in construction.

Determination of optimal technological conditions for the manufacture of semi-finished products from gooseberry fruit

The quality of pureed berries products is determined by many factors. The purpose of the study was to determine the optimal technological conditions for the manufacture of semi-finished products from gooseberries, providing for the use of equipment with a rotary machine (MAG‑50) and ensuring the required quality characteristics. The objects of research were semi-finished products from gooseberries. The manufacturing technology involved high-temperature processing or the use of the rotary machine MAG‑50. The research methods were standard. It has been found that in order to obtain products with the required quality characteristics, the duration of processing in MAG‑50 had the greatest influence. The optimal technological conditions for the manufacture of products in MAG‑50 have been determined: processing for 14–20 minutes at a temperature of 59–65°C of at least 72% of fresh berries or 58–65°C of at least 66% of quick-frozen ones. It has been established that the technology involving the use of rotary machine MAG‑50, compared with the high-temperature one, made it possible to obtain products with a lower content of mesophilic aerobic and facultative anaerobic microorganisms, molds (by 97.7 and 69.8%, respectively), better appearance characteristics (by 1.7%), color, texture and odor (by 2.3%), taste and aftertaste (by 3.6%). The state of the raw materials had the greatest impact on the content of yeast in semi-finished products — products made from fresh berries contained 48.7% more of them on average than products from quick-frozen ones. Compared with the Senator variety, gooseberry fruits of the Pink 2 variety made it possible to obtain products with a high content of soluble solids, sugars, minerals and ascorbic acid (by 18.2, 58.9, 7.7 and 61.8%, respectively), less titrated acids and dietary fibers (by 21.2 and 20.3%, respectively). The study demonstrates the potential of obtaining semi-finished products from gooseberries, regardless of their variety and condition by using the technology involving the use of MAG‑50.

Study on Reaction Behavior and Phase Transformation Regularity of Montmorillonite in High-Calcium Sodium Aluminate Solution System

The diaspore is a typical representative of bauxite resources in China, which is the primary raw material for the Bayer process in alumina production, particularly in regions such as Shanxi, Guangxi, Guizhou, and Henan. Clarifying the phase transformations and reaction mechanisms of the silicon-containing minerals during the Bayer leaching process of diaspore is essential for improving the efficiency of alumina production. This article focuses on montmorillonite, which is one of the silicon-containing minerals of diaspore-type bauxite, investigating the reaction mechanisms and phase changes of montmorillonite under the high-calcium sodium aluminate solution system by using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Magic Angle Spinning Nuclear Magnetic Resonance (MAS–NMR) and Fourier Transform Infrared Spectroscopy (FTIR). The results show that montmorillonite dissolved and transformed into Na6(AlSiO4)6 (hydrated sodium aluminosilicate) under the high-calcium sodium aluminate solution system, and calcium oxide and sodium aluminate in the solution reacted to form (CaO)3Al2O3(H2O)6 (hydrated calcium aluminate). With the increase of reaction temperature, caustic alkali concentration (Nk), and reaction time, hydrated calcium aluminate and hydrated sodium aluminosilicate react and transform into Ca3Al2SiO4(OH)8 (hydrogarnet). Under the optimal reaction conditions of a 120 min reaction time, a temperature of 240 °C, an Nk of 240 g/L, and a CaO–to–SiO2 mass ratio (C/S) of 3.5:1, the montmorillonite reaction degree can reach a maximum of 93.71%.

Dehydrated Food Waste and Leftover for Trench Composting

The growing global population has a persistently negative impact on the economy and ecology due to food waste. This topic has recently received much attention from around the world. For both homes and the food processing industry, recycling food waste is crucial to waste management. This study aims to show how dehydrated food scraps and leftovers can be used as raw materials for trench compost to enhance soil quality and reduce leachate and greenhouse gas emissions. The results showed that the pre-treatment and air temperature significantly affected the finished trench compost products’ EC, pH, and nutrient content. Pretreated dried leftover at 80°C after trench compost was found to have the highest value of CNH, S (36.53%), and micronutrients (0.103404%) when compared to micronutrients in the final product of pre-treatment dried leftover at 80<i>℃</i> after trench compost that was (0.057273%). Dehydrated leftovers from trench compost were thought to have nutrient content that would improve soil quality, slow decomposition, and reduce odor, thus enabling more frequent trash collection.

Enhancing composition and functionality of jelly candies through apple and beetroot pomace flour addition

The functionalization of food products with agri-industial residues is of great interest. Apple and beetroot pomace flour, abundant in dietary fiber and antioxidants, were incorporated into jelly candies using agar, pectin, or gelatin. Three functional formulations were devised for each flour type at the pilot scale, resulting in jelly candies with desirable sensory properties and texture. The high content of total polyphenolics, flavonoids, betacyanins, and betaxantines was determined upon in vitro digestion. The influence of different matrices on these bioactives, crucial for exerting antioxidant activity, was evaluated using DPPH and FRAP assays on both fresh and nine-month stored jelly candies, showcasing good bioavailability and retention. Enrichment with APF and BPF also led to reduced postprandial glucose levels, glycemic index, and load determined in vivo. These findings affirm that compositionally optimized innovative formulations of jelly candies facilitate the efficient delivery of compounds with anti-obesity effect from upcycled raw materials.

Mechanical recycling of polyamide 6 and polypropylene for automotive applications

AbstractThis study investigates the mechanical recycling of polyamide 6 (PA6) from discarded fishing nets and polypropylene (PP) from automotive battery scraps and household waste for automotive applications. The mechanical properties of both materials were evaluated through tensile, impact, and thermal testing, revealing that recycled PA6 (r‐PA6) and recycled PP (r‐PP) can achieve mechanical performance similar to virgin materials. Recycled PA6 was reinforced with 30% glass fiber (GF), significantly enhancing its tensile strength from 70 to 170 MPa, comparable with virgin PA6's (76 MPa). Furthermore, the tensile modulus of r‐PA6 increased from 7720 to 8500 MPa. Recycled PP was compounded with thermoplastic elastomers (TPE) and fillers, such as calcium carbonate (CaCO₃) and talc, improving its impact strength from 5 to 18 KJ/m2 and improving thermal stability, with a heat deflection temperature (HDT) reaching 95°C. The optimized formulations for r‐PP, particularly from automotive battery scrap, achieved a melt flow index (MFI) of 12–16 g/10 min, preventing molding defects. This study highlights the importance of controlled thermal treatments, appropriate additive use, and accurate processing conditions in producing high‐quality recycled polymer compounds.Highlights Recycled PA6 reinforced with 30% GF achieves a tensile strength of 170 MPa. Thermal treatment increases the tensile modulus of r‐PA6 to 8500 MPa, similar to virgin PA6. Incorporating TPE improves the impact strength of r‐PP to 18 KJ/m2. Calcium carbonate and talc enhance the thermal stability of r‐PP to 95°C. The melt flow index of r‐PP optimized to 12–16 g/10 min for better moldability.

The influence of the method of processing rapeseed seeds on their protein complex

Relevance. The recycling of secondary rapeseed raw materials is a perspective trend for increasing the efficiency of production of this agricultural crop.Methods. Degreasing of the rapeseed kernel fraction was carried out by hexane extraction, wateralcohol treatment of the low—fat rapeseed kernel with a mixture of water + ethanol (3:7). The fractional composition of the rapeseed protein complex was determined by sequential extraction with distilled water, 7% NaCl solution and 0.1M NaOH solution. Protein isolation: extractant — NaCl solution (70 g/l), pH — 9.0, T — 50 °С, duration — 90 min. The protein was precipitated at pH 4.8 and dried in a microwave oven at 500 W for 3–4 minutes. Absorption spectra of protein fractions of rapeseed seeds were recorded on a PE-5400 UV spectrophotometer using the SC5400 program.Results. It was shown that degreasing by hexane extraction contributed to an increase in the content of globulins (by 8.5%) with a decrease in albumins (by 3.0%) and glutelins (by 3.3%). Analysis of the UV spectra of these protein fractions showed the presence of synaptic acid in the fractions of albumins and globulins. The water-alcohol treatment of the skimmed rapeseed kernel, carried out to remove phenolic compounds, contributed to the partial removal of protein from the raw material (protein content decreased from 39.06 to 32.34%), limited protein denaturation, which leads to a decrease in protein solubility and protein yield in the extract, as indicated by a decrease in the yield of the protein product relative to the raw material from 26.4 to 15.3%, a decrease in protein yield relative to the protein contained in the raw material, from 28.9 to 20.3%.