Quality Control Of Raw Materials Research Articles

Development of a new inversion-voltammetric technique in determining inorganic iodine in Laminariae thalli L. for the quality control of raw materials in factory laboratories

Objectives. To develop and validate a methodology for determining inorganic iodine in Laminariae thalli L., corresponding to the norms of the State Pharmacopoeia of the Russian Federation, 15th edition (SPh 15). The methodology needs to be valid and suitable for the quality control of pharmaceutical raw materials in factory laboratories.Methods. Cathode inversion voltammetry was used as an instrumental method for determining inorganic iodine using a graphite electrode capable of sorbing electroactive ion associates of surfactant–iodine.Results. When compared with the titrimetric technique recommended by SPh 15, the proposed technique is more selective, sensitive and less time-consuming. The efficiency and metrological characteristics of the technique were confirmed by validation in accordance with the requirements of SPh 15.Conclusion. The paper presents a new method for determining the gross content of inorganic iodine in Laminariae thalli L. This technique can be used not only in scientific research, but also in the routine quality control of medicinal plant raw materials in control and analytical laboratories engaged in pharmaceutical quality control.

Effects of Cultivar Factors on Fermentation Characteristics and Volatile Organic Components of Strawberry Wine.

Strawberry wine production is a considerable approach to solve the problem of the Chinese concentrated harvesting period and the short shelf life of strawberries, but the appropriative strawberry cultivars for fermentation are still undecided. In this study, the strawberry juice and wines of four typical strawberry cultivars named Akihime (ZJ), Sweet Charlie (TCL), Snow White (BX), and Tongzhougongzhu (TZ) were thoroughly characterized for their physicochemical indicators, bioactive compounds, and volatile organic components (VOCs) to determine the optimal strawberry cultivars for winemaking. The results showed that there were significant differences in the total sugar content, pH, total acid, and other physicochemical indexes in the strawberry juice of different cultivars, which further affected the physicochemical indexes of fermented strawberry wine. Moreover, the content of polyphenols, total flavonoids, vitamin C, and color varied among the four strawberry cultivars. A total of 42 VOCs were detected in the strawberry juice and wines using headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC-MS), and 3-methyl-1-butanol, linalool, trans-2-pinanol, hexanoic acid, and hexanoic acid ethyl ester were the differential VOCs to identify the strawberry wine samples of different cultivars. Overall, strawberry cultivar ZJ had a relatively high VOC and bioactive compound content, indicating that it is the most suitable cultivar for strawberry wine fermentation. In addition to determining the relatively superior fermentation characteristics of cultivar ZJ, the results may provide a theoretical basis for the raw material quality control and quality improvement of strawberry wine.

Fracture failure analysis of traction transformer oil pump flange

A flange fracture occurred during the installation of a traction transformer oil pump. The causes of the flange fracture were analyzed using physical, chemical, and finite element methods. The fracture surface shows expanded edges and a linear fracture source, indicating an overload fracture. No significant defects such as pinholes, looseness, or cracks were found in the internal structure, which contains elongated Si phases. The Si, Ti, and Zn content in the failure part does not meet standard specifications. The hardness of the failure part is HBW107.8, meeting standards, but the elongation at break is at the lower limit, suggesting higher material brittleness. Finite element analysis revealed a maximum tensile stress of 241.5 MPa on the flange, close to the yield strength, indicating a small safety margin. The flange fracture is related to high material brittleness and potential assembly anomalies. To prevent similar incidents, strict control of raw material quality, regular inspection of mechanical properties, and finite element analysis for structural optimization are necessary.

Magnetic materials as adsorbents for the pre-concentration and separation of active ingredients from herbal medicine.

Herbal medicine (HM) is crucial in disease management and contains complex compounds with few active pharmacological ingredients, presenting challenges in quality control of raw materials and formulations. Effective separation, identification, and analysis of active components are vital for HM efficacy. Traditional methods like liquid-liquid extraction and solid-phase extraction are time-consuming and environmentally concerning, with limitations such as sorbent issues, pressure, and clogging. Magnetic solid-phase extraction uses magnetic sorbents for targeted analyte separation and enrichment, offering rapid, pressure-free separation. However, inorganic magnetic particles' aggregation and oxidation, as well as lack of selectivity, have led to the use of various coatings and modifications to enhance specificity and selectivity for complex herbal samples. This review delves into magnetic composites in HM pretreatment, specifically focusing on encapsulated or modified magnetic nanoparticles and materials like silica, ionic liquids, graphene family derivatives, carbon nanotubes, metal-organic frameworks, covalent organic frameworks, and molecularly imprinted polymers.

Evaluation of biological properties and phytochemical profile of Vitex trifolia L. extract and its infused oil as a value-added product for health promotion

Vitex trifolia L., a shrub plant, has long been used as a massage oil to treat a variety of ailments, particularly pain relief. Despite its long history of use, there has not been enough research done on its phytochemical profile and biological properties to validate its traditional use. Therefore, this current research aimed to evaluate its phytochemical profile and biological properties in two forms: Vitex trifolia L. ethanolic extract (VTE) and Vitex trifolia L. oil (VTO), which could be advantageous for clinical usage. Quality control of raw plant material, total phenolic, total flavonoid, and casticin of VTE and VTO were investigated. Furthermore, the antibacterial, antioxidant, and anti-inflammatory activities and cytotoxicity of VTE and VTO were evaluated. The study indicated that VTE contained more total phenolics (66.74±15.52 mg GAE/g), total flavonoids (29.68±2.05 mg CE/g extract), and casticin (2.45±0.02 mg/mL) than VTO. VTE consistently demonstrated stronger antibacterial, antioxidant, and anti-inflammatory properties than VTO. Taken together, VTE possessed remarkable antioxidant, anti-inflammatory, and antibacterial activities with no cytotoxic effects on cells. Even VTO had weak biological abilities. However, its stability testing revealed that the modestly accepted adjustments remained stable. Therefore, this study suggests that Vitex trifolia L. could be used as a natural product for health promotion and therapy.

Application of gaussian filter and extraction features for quality control of fruit raw materials in the puree industry

The purpose of research in using Android-based raw material quality control applications in fruit puree factories is to enhance the industry's precision, uniformity, and efficiency. This application is developed to implement digital image processing utilizing two distinct methods: Gaussian filters and feature extraction. The implemented application captures guava data using the camera of an Android phone and subsequently resizes the image to dimensions of 600x600 pixels. Subsequently, the image colors are recovered by employing a Gaussian filter that operates on normalized Red-Green-Blue values. A minimum of 120 photos of red guava fruit from the raw material of one of the puree companies were subjected to image processing procedures. The application solely focuses on the color and texture of the fruit's skin, ensuring that the sample remains undamaged while adhering to hygienic guidelines. The ripeness degree of guava fruit is determined by employing an image classification algorithm with the K-nearest neighbor method. The application validation using K-fold cross-validation achieved an accuracy of 90.0% and a precision of 90.27% when applied to color imagery. When feature extraction was used, the accuracy was 83.3%, with a precision of 83.4%. Color extraction provides a more precise method for identifying ripe guava. The utilization of guava fruit ripeness detection in the quality control of raw materials for the puree sector has been simplified and made more user-friendly through the development of an Android-based application. Officers are not obligated to possess specialized expertise regarding the quality of raw materials.

TEST RESULTS OF DOMESTIC RECUPERATIVE COALS

Adsorption steam recovery plants (VRS) of oil and petroleum products are among the most common in the world. This is facilitated by their relatively high throughput, low energy consumption, and a sufficiently high achievable degree of purification of the gas-air mixture (GAM) from hydrocarbons. The main consumable material in this case is an adsorbent – a substance capable of first selectively attaching hydrocarbon gases contained in hot water to its surface, and when thermodynamic conditions change, it detaches them. Most often, recuperative (activated) coal is used as an adsorbent. During operation, the adsorption capacity of recuperative coal gradually decreases. This is facilitated by the mechanical destruction heavy hydrocarbons contained in the hot water, which cannot be fully isolated during the desorption operation. Therefore, periodically recuperative coal requires replacement.Until recently, it was purchased abroad. Usually, recuperative coal was supplied complete with the recuperation units themselves, supplied from abroad. However, to date, adsorption VRS have begun to be produced in Russia. In addition, the endless sanctions of the West are forcing us to look for sources of supply of this adsorbent inside the country.The article presents the results of comparative laboratory tests of a number of recuperative coals for use in the adsorption of hydrocarbons from hot water. According to the of coal granules, as well as water vapor and value of the integral efficiency indicator, the best of them was the Sorber-30 brand coal. In addition, the enterprise at which it is produced has the necessary production facilities, human resources, capabilities for conducting input quality control of raw materials and the quality of finished products, and also supplies recuperative coal to consumers in sufficiently large volumes, i.e. is a reliable supplier.The article also describes the results of comparative industrial tests of the recovery coal «Sorber-30» and imported coal of the brand «CGF4 plus», operated in the adsorption VRSin LLC «Transneft – Port Kozmino» since 2014.

ОСОБЕННОСТИ ПРОИЗВОДСТВА ПОЛИМЕРНЫХ ТРУБ МЕТОДОМ ЭКСТРУЗИИ

The features of the production of polymer pipes by extrusion are considered. The need for quality control of raw materials, as well as technological parameters at all stages of the process, has been identified

РАЗВИТИЕ ПИЩЕВЫХ ПРОИЗВОДСТВ В АГРОПРОМЫШЛЕННОМ СЕКТОРЕ ЭКОНОМИКИ ПЕРМСКОГО КРАЯ

The scientific article contains a theoretical analysis of development problems and a review of scientific literature on increasing the efficiency of food production in the agricultural sector of the economy, shows the importance of quality control of raw materials for the production of semi-finished products on the food market, pays special attention to the recipe in accordance with the requirements of modern dietetics, and takes into account factors that increase efficiency, trends in the development of the market for semi-finished products in the Russian Federation are indicated. The reasons for the demand for semi-finished products are revealed, and the seasonality of their production is noted. The production volume of dumplings per year, per shift, per hour is calculated. A method for determining the market share of semi-finished products and a method for determining the cost of minced meat ingredients and dough for preparing dumplings are shown. The calculation of the cost of packaging dumplings, taking into account the sticker and clip, is presented. It has been determined that the share of dumplings produced in 0.5 kilogram packages is 40 percent, and the share of dumplings produced in one kilogram package is 60 percent. Contains a calculation of the cost of one kilogram of dumplings and the cost structure. It was revealed that in the structure of costs for the production of dumplings, the largest share is occupied by the cost of minced meat, and the smallest share is the cost of electricity. The financial result of the sale of dumplings was calculated and the profit from the sale of dumplings was indicated. The level of profitability indicates that for every ruble invested in the production and sale of dumplings in one kilogram packaging there is thirty-seven kopecks of profit, and in the production and sale of dumplings in 0.5 kilogram packaging - forty-seven kopecks.

ANALISIS PENGENDALIAN KUALITAS PRODUK MIE DENGAN METODE STATISTICAL PROCESS CONTROL

CV Manunggal Jaya is a company engaged in food production in Bandung. The company, which produces noodles experiences product defects that exceed the company's tolerance limit. The purpose of this study is to determine quality control, factors that cause product defects, and the application of the Statistical Process Control (SPC) method. This research method is a descriptive quantitative method with data collection using interviews, observation and documentation. Data processing is done using tools such as flowchart, fishbone diagram, check sheet, histogram, control chart (p-chart) and pareto diagram. Based on the research results that there are 3 (three) quality controls, namely: Quality control of raw materials, production processes, finished products. Product defects are caused by human factors, raw materials, machines, and methods. There are three types of defects that occur at CV Manunggal Jaya Bandung, namely size defects, texture defects and dirty dough. Based on the results of the control chart (p-chart), it is known that the CL is 0.0081, UCL is 0.00961, LCL is 0.00668. The results of the analysis using the Pareto diagram tool state that the priority of improvements that must be made by the company is on texture defects.

Quantitative analysis of rutin in flavonoid-rich plant raw material by HPTLC

Introduction. Due to the increasing requirements for the quality of pharmaceutical products, the requirements for standardization of herbal medicines are also growing, which in turn necessitates the development of approaches to quality control of medicinal plant raw materials. The use of such an advanced method as high-performance thin-layer chromatography (HPTLC) will improve the quality of drug standardization, which is associated with the advantages of this method: minimized sample preparation, parallel determination of small volumes, elution time, high sensitivity, efficiency and speed. Objective. Quantitative determination of rutin by high-performance thin-layer chromatography, as well as comparison of the results of quantitative determination of the amount of flavonoids in terms of rutin by the spectrophotometric method. Material and methods. Medicinal plant raw materials – violet herb – were subjected to extraction using a developed method with 70 and 96% ethanol. Quantitative determination of rutin in extracts was carried out by HPTLC and spectrophotometry. Results. The developed method for the quantitative determination of rutin was validated in terms of linearity, specificity and accuracy. The difference in the extractive ability of the solvents used was shown. The percentage of rutin determined using the HPTLC method in an ethanol (96%) extract (3 µl) is 3.0826%, in an ethanol (70%) extract (3 µl) – 1.5911%. The percentage of rutin determined using the HPTLC method in an ethanol (96%) extract (5 µl) is 3.0894%, in an ethanol (70%) extract (5 µl) – 1.6064%. The percentage of total flavonoids in terms of rutin determined using the spectrophotometric method in the ethanol (96%) extract is 3.4289%, in the ethanol (70%) extract – 2.4176%. Conclusion. As a result of the study, a method for the quantitative determination of rutin was developed and validated, which can be used in the standardization of violet herb.

Anatomy and Histochemistry of Alliaceae and Iridaceae Species: Quality Control of Traditional Medicine Raw Materials

Alliaceae (Allium cepa and Allium ascalonicum) and Iridaceae (Eleutherine bulbosa) are widely used as spices, condiments, and traditional medicine. These three species are vulnerable to adulteration because they are morphologically similar in shape and colour. This study aims to identify and authenticate the three samples through anatomical and histochemical approaches. Anatomical and histochemical analyses were performed on fresh sections of the bulbs samples according to standard anatomical procedures with a razor blade and identification of the main compound groups using specific reagents. Anatomically, the three samples had similar patterns and cell organelles (cell nucleus, cytoplasm, and cell wall). Histochemical techniques identified the presence of alkaloids, phenolics, lipophilics, and terpenoids groups. Histochemical techniques can be applied in identifying the compound groups of the three samples and can be used as an alternative in testing the quality control of traditional medicine raw materials.

Prospects for the use of layer-by-layer technology for the development of an enzyme biosensor used for milk quality control

This article presents the results of scientific research on the development of a biosensor system for the determination of salts of heavy metals (cadmium and lead) in milk. When developing a biosensor system, much attention is paid to the selection of biological material and the method of their stabilization using physical and chemical forces, namely, immobilization. In this regard, studies were carried out on the selection of the enzyme and the method of its immobilization in the development of a biosensor for the detection of salts of heavy metals in milk. The development of a biosensor for the determination of toxic elements in food products is of scientific and practical importance. In world practice, special attention is paid to the contamination of raw materials and food products with toxic chemicals, mainly of anthropogenic origin, which are persistent organic pollutants. Therefore, quality control of raw materials, food products is important for consumers, and, accordingly, for the food industry. Experimental studies are based on the methods of Filippova A. M., Vorobieva O. V. to determine the specific activity of the enzyme acetylcholinesterase. Determination of the activity of the catalase enzyme was carried out in accordance with the gasometric method according to the method of Warburg. As a result of experimental studies, the catalase enzyme as a biological material was chosen as a sensitive element. As a carrier for the immobilization of enzymes, a 5-bilayer combination of "chitosan-sodium alginate" was selected. The layer-by-layer technology was used to immobilize the enzyme on the substrate surface when creating an enzyme biosensor. The results of the research are recommended to be applied in the study of food safety issues and in the assessment of safety indicators of raw materials and food products by the express method.

Penerapan Sistem Good Manufacturing Practices (GMP) Pada Proses Pembekuan Ikan Layur DI CV. Sinar Harapan Berau

The freezing industry requires a basic eligibility program to provide guarantees for a food safety system. The application of GMP or Good Manufacturing Practices in the food industry is a requirement to produce products that are safe for consumption. The aim of the study was to examine the application of GMP in freezing layur fish at CV. Sinar Harapan Berau and identify non-compliance factors in the implementation of GMP. The results showed that the application of GMP in CV. Sinar Harapan Berau has largely complied with the CPPOB guideline requirements. Based on the analysis of non-conformity, there are 14 aspects that are suitable and 4 aspects that are not suitable with the percentages of 77.8% and 22.2%, respectively. Several factors cause non-compliance with GMP, namely puddles of water on the road leading to the production site, the road has not been cemented, and without laying stones. There are no washing facilities in the toilet area, there is still rust on the tables and pans in the production area. CV. Sinar Harapan also does not yet have laboratory facilities for quality control and safety of raw materials, but only inspects organoleptically.

Estimating the rejection risk of Indonesian shrimp exports from Salmonella spp. contamination using the food safety objective approach

Contamination by non-typhoidal Salmonella spp. in aquacultured shrimp poses a risk for human health. In Indonesia, the presence of the pathogen in shrimp raises a major concern for international trade because shrimp is one of the important exported fishery commodities. The aim of this study was to use food safety objective approach in combination with a quantitative microbiological risk assessment to determine the contamination of Salmonella spp. in raw materials, to estimate the risk of export rejection and to identify the contributing factors of export rejections. The prevalence and concentration of Salmonella spp. in shrimp based on real-time polymerase chain reaction of 7.02% and 0.72–1.46 log CFU/gr (mean: 1.00 ± 0.28 log CFU/g), respectively, were used to develop an exposure model. The exposure model was used to estimate the level of Salmonella spp. in frozen shrimp at the border of an export destination country, which was ca. −6.02 to −2.07 (mean −3.73 ± 0.73) log CFU/g. The value was compared to the food safety objective value determined from the required microbiological criterion of Salmonella spp. of n = 30, c = 0, and m = negative/25 g. As a result, the risk estimate for rejection was 27 rejections per 100,000 exports. The Salmonella spp. contamination level in raw materials and freezing technology were the primary factors contributing to the rejections. Moreover, maintaining the quality control of raw materials purchased or controlled quick freezing may be the mitigation formulae of export rejection of frozen shrimp due to Salmonella spp.

THE DEVELOPMENT AND VALIDATION OF HPLC AND HPTLC-DENSITOMETRY METHODS FOR THE DETERMINATION OF 1, 4-NAPHTHOQUINONE CONTENT IN ELEUTHERINE BULBOSA EXTRACT

Objective: The aim of this research was to develop and validate identification and Quantitation methods for 1,4-naphthoquinone in the extract of Eleutherine bulbosa. Methods: High-performance liquid chromatography (HPLC) and high-performance thin-layer chromatography with densitometric detection (HPTLC-densitometry) were employed as analytical techniques. HPTLC-densitometry was performed at a wavelength of 249 nm, while UHPLC was conducted at a wavelength of 254 nm. Both methods were utilized to analyze 1,4-naphthoquinone in 96% ethanol extract of E. bulbosa as a Quantitation parameter in the standardization of the formulation. HPTLC separation was carried out on a 20 cm × 20 cm HPTLC glass plate coated with silica gel 60 F254 using a mobile phase of chloroform: methanol (8:2, v/v). For HPLC analysis, a C18 column with an isocratic method was employed using a mobile phase of 95% methanol in pump A and 0.5% chloroform in pump B. The calibration curve of peak area against concentration showed linearity within the range of 2500-15000 ppm/spot−1 and 3–21 μg/ml for HPTLC and HPLC, respectively. Both methods were validated for accuracy, precision, linearity, selectivity, LOD, and LOQ. Results: The results showed that both methods exhibited linearity that met the standards, as they produced correlation coefficients (r) greater than 0.9900. Furthermore, both methods demonstrated good accuracy, with consecutive recovery values of 99.53% and 101.89%. On the other hand, the methods fulfilled the precision requirements, with respective values of 0.7159% and 2.884% (in compliance with the requirement of<5%). Additionally, to meet the LOD and LOQ requirements in HPTLC, the LOD value obtained was 163 ppm, and the LOQ value was 495 ppm. In HPLC, the retention time of the standard 1,4-naphthoquinone and the analyte compound in the extract of E. bulbosa were the same, at 3.507 min. The selectivity test on HPTLC indicated that the 1,4-naphthoquinone compound was at an RF value of 0.81, which was also detected in the extract of E. bulbosa at the same RF value. Conclusion: In conclusion, our findings demonstrate that HPLC and HPTLC methods for the determination of 1,4-naphthoquinone content have met the standards for linearity, accuracy, precision, selectivity, LOD, and LOQ. Therefore, these methods can be recommended for the quality control of raw materials of E. bulbosa extract.

HPTLC Method Development of Herbal drugs and its Validation: An Overview

High Performance Thin Layer Chromatography (HPTLC) is the most potent and sophisticated type of Thin Layer Chromatography (TLC). It uses chromatographic layers with the highest levels of separation, efficiency and employs high-tech equipment for every step of the process, including accurate sample application, standardised reproducible chromatogram development, and software-controlled evaluation. HPTLC is a concept that incorporates both the use of established methodologies for qualitative and quantitative analysis and a widely standardised methodology founded on scientific facts. The resolution can be increased and more exact quantitative measurements, which satisfies all quality standards for today's analytical needs. Development of an analytical technique based on HPTLC and parameter validation in line with practical assessment. It complies with standards while reducing mistakes and inquiries. Quality Control and Quality Assurance of raw materials of Plant Origin can easily and effectively be done qualitative characterization and quantitative determination of mixtures of substances, Chemical Fingerprinting by High Performance Liquid Chromatography. This review article provides fundamental principles, guidance for proper validation practise, aids in selecting the best mobile phase, and clarifies the processes of the analytical process., protocol, separation, resolution, validation process, current advancements, changes made to TLC that led to HPTLC, optimization, process control, automation, and hyphenation.

Methodical support for controlling safety of cereals for children (exemplified by furan and methylfuran)

Introduction. The study addresses issues related to developing a procedure for identification of chemicals in food products in practical instrumental investigations. We have validated the method for quantification of a heterocyclic compound (furan) and sylvan (methylfuran) in grain-based cereals for children.
 The aim of this study was to develop a precise GC-MS-method for quantifying a heterocyclic compound and sylvan in food products to control their safety for children, especially infants.
 Materials and methods. The research objects were quantification means (QM) as a certain amount of an analyzed heterocyclic compound and sylvan (the mass share of the analyzed compound is 99%) provided by Sigma Aldrich Corporation (USA), as well as milk and milk-free dry cereals for babies. The study involved using an Agilent 7890А gas chromatographer with 5975С quadrupole mass-spectrometric detector. Sample preparation involved extraction and concentration of furan and methylfuran from food samples by statistical vapour-liquid equilibrium analysis and subsequent gas-chromatographic analysis of vapour phase.
 Results. The procedure for quantification of furan and methylfuran is an original scientific and technical development based on experimental data. It gives an opportunity to identify furan and methylfuran micro-admixtures in food samples with high precision and sensitivity with a range of concentrations between 0.93 and 9.37 ng and between 0.91 and 9.13 ng accordingly. The ultimate indicators describing acceptability of the results obtained by furan and methylfuran quantification included error not higher than 24%, пintra-laboratory precision (σRл ) not higher than 10%, correctness (± σCл ) not higher than 22%.
 Conclusion. The developed technique has shown high selectivity, sensitivity, reliability and satisfactory accuracy. The methodology meets the criteria of the State Standard of the Russian Federation GOST R ISO 5725-1-6-2002 and can be used for laboratory studies of food safety by enterprises and institutions engaged in quality control and research of food products and food raw materials.

3D Printing windows and rheological properties for normal maize starch/sodium alginate composite gels

Starch composite gels can be used for three-dimensional (3D) printing aiming at producing food products with a designed shape. Sodium alginate (SA), as a common thickener, is used for the fabrication of starch composite gels in 3D printing protocols. However, the printing windows and mechanism of 3D printing of starch and SA composition gel remain unclear. The geometric accuracy, rheological properties, small-angle X-ray scattering (SAXS) and scanning electron microscopy (SEM) were used to evaluate starch composite gels and their products to get the structure-properties-printing ability and accuracy. Computational fluid dynamics (CFD) simulations were employed to simulate the 3D printing process. The results showed that SA was capable of improving the 3D printing feasibility of the starch gels. However, the successful printing zone was limited by the 3D printing windows which prepared for the normal maize starch (NMS)/SA composite gels. SAXS data demonstrated that a smaller mesh size contributed to the higher storage modulus (G'). Principle component analysis (PCA) and correlation analysis showed that the geometric accuracy was closely related to the rheological property of the composite gel. The CFD model explained an unevenness of the velocity distribution in the flow channel due to variations in the diameter of the extruded material, which caused an extrusion expansion effect during the 3D printing process. This study provided a theoretical basis for the standardization and quality control of raw materials for starch-based 3D printing.

Применение глубокого обучения для сегментации камней на конвейерах и складах горнодобывающих предприятий

In the last decade, the introduction of artificial intelligence methods in industry has been accelerating. The development of deep learning algorithms and the emergence of the ability to store and process large amounts of information make it possible to quickly and efficiently automate tasks that previously could only be solved by people – employees of enterprises, and the results obtained not only correspond to human cognitive abilities, but often surpass them. An interesting example of a routine task that can be automated using computer vision methods is the task of segmenting stones on conveyors and warehouses of mining enterprises to ensure quality control of raw materials and finished products. The purpose of this work is to develop an algorithm for segmenting stones on conveyors and warehouses. To achieve this goal, a brief historical review of approaches to solving the described problem was carried out, and a study was made of the application of the Mask R-­CNN architecture to solving the problem of stone segmentation. The training dataset included 1000 augmented images from 100 crushed stone photos taken on a mining conveyor belt. The results obtained in the IoU metric exceeded 83 %, and in the Accuracy metric – 89 %, which provides high-quality automatic continuous visual quality control of raw materials or finished products. The resulting segmentation maps can serve as a good basis for determining granulometric characteristics, quality categories that are important in the mining industry, timely detecting flakiness on conveyors and segregation in finished product warehouses in real time.