Modification Of Raw Materials Research Articles

Acrylamide in starchy foods subjected to deep-frying, 20 years after its discovery (2002-2022): a patent review

On the occasion of the 20th anniversary of the discovery of acrylamide in food, an analysis of patents related to the mitigation of this compound in food products obtained through immersion frying was carried out. For this purpose, a comprehensive search, compilation, and information analysis were conducted using free online databases such as Google Patents, Patenscope, and Lens. The search yielded a total of 79 patents within the considered time period (2002-2022). The countries with the highest number of granted patents were the United States, the European Union, and South Korea. The patents were classified into four main approaches: raw material modification (49%), application of pre-treatments (27%), process modification (16%), and measurement techniques (8%). Among the results, Frito-Lay, an American company, stands out as the food industry company with the highest number of granted patents, totaling 15. Based on this review, it is concluded that while a significant number of patents have been granted in recent years, there is still a lag in developing countries. Furthermore, more studies are needed to determine acrylamide in starchy food matrices subjected to immersion frying different from potatoes.

Acrylamide in starchy foods subjected to deep-frying, 20 years after its discovery (2002-2022): a patent review.

On the occasion of the 20th anniversary of the discovery of acrylamide in food, an analysis of patents related to the mitigation of this compound in food products obtained through immersion frying was carried out. For this purpose, a comprehensive search, compilation, and information analysis were conducted using free online databases such as Google Patents, Patenscope, and Lens. The search yielded a total of 79 patents within the considered time period (2002-2022). The countries with the highest number of granted patents were the United States, the European Union, and South Korea. The patents were classified into four main approaches: raw material modification (49%), application of pre-treatments (27%), process modification (16%), and measurement techniques (8%). Among the results, Frito-Lay, an American company, stands out as the food industry company with the highest number of granted patents, totaling 15. Based on this review, it is concluded that while a significant number of patents have been granted in recent years, there is still a lag in developing countries. Furthermore, more studies are needed to determine acrylamide in starchy food matrices subjected to immersion frying different from potatoes.

Variability in the Sibiryachikha Assemblages of the Altai Mountains (Based on Materials from Okladnikov Cave Layer 2)

This article, based on new data from comprehensive studies of assemblage from Okladnikov Cave layer 2, explores the variability of Middle Paleolithic Sibiryachikha variant of the Altai Mountains. Using methods such as scar pattern analysis, experimental use-wear analysis, attributive analysis, etc., we specify the characteristics of the assemblage by extending the nomenclature of technical fl akes relating to radial fl aking, evaluating the share of the bifacial component including bifaces, their fragments, and bifacial technical fl akes, revising the typology of the tools. The Sibiryachikha assemblage of Chagyrskaya Cave layer 6c/1 is correlated with that of Okladnikov Cave layers 1 and 2, revealing not only common features but also differences in primary and secondary reduction. At Okladnikov Cave, unlike Chagyrskaya, the reduction cycle is incomplete, the tools are smaller, and the share of convergent scrapers and chips resulting from the processing of bifaces is higher. We conclude that the distinctive feature of Okladnikov industry is a considerably more intense modifi cation of raw materials owing to their less availability. Because Okladnikov Cave is situated in the immediate vicinity of the sources of raw material, implying its abundance, we suggest that pebbles of suitable quality and size were less available. As a result, rejuvenation of lithic tools was more intense, and bifacial thinning fl akes were used as tool blanks. The Okladnikov Cave industry reveals the complex behavioral models, previously unknown, among eastern Neanderthals, which do not rule out the import of bifacial tools or blanks made of high-quality raw material.

Advances in preparation and application of food-grade emulsion gels.

Emulsion gel is a semi-solid or solid material with a three-dimensional net structure produced from emulsion through physical, enzymatic, chemical methods or their combination. Emulsion gels are widely used in food, pharmaceutical and cosmetic industries as carriers of bioactive substances and fat substitutes due to their unique properties. The modification of raw materials, and the application of different processing methods and associated process parameters profoundly affect the ease or difficult of gel formation, microstructure, hardness of the resulting emulsion gels. This paper reviews the important research undertaken in the last decade focusing on classification of emulsion gels, their preparation methods, the influence of processing method and associated process parameters on structure-function of emulsion gels. It also highlights current status of emulsion gels in food, pharmaceutical and medical industries and provides future outlook on research directions requiring to provide theoretical support for innovative applications of emulsion gels, particularly in food industry.

Porous Materials Derived from Industrial By-Products for Titanium Dioxide Nanoparticles Capture

The aim of this paper was the evaluation of hybrid porous materials, named SUNSPACE (“SUstaiNable materials Synthesized from by-Products and Alginates for Clean air and better Environment”), realized with raw materials such as silica fume (SUNSPACE SF) and bottom ash derived from municipal solid waste incineration (SUNSPACE BA), compared to cement and leaf for particulate matter (PM) entrapment. SUNSPACE BA was synthesized to overcome the limited applicability of the original material due to its dark grey color. The modification of raw materials used for its realization allows one to obtain a light color in comparison to the corresponding SUNSPACE SF, more suitable to be used as a coating on the buildings’ facades for aesthetic reasons. Moreover, another great advantage was obtained by the synthesis of SUNSPACE BA in the frame of circular economy principles; indeed, it was obtained by using a waste material (derived from waste incineration), opening new possibilities for its reuse. Experimental tests to evaluate the particles entrapment capability of the material were realized for the first time by using a nanoparticles generator. TiO2 suspension with a size of 300 nm and a concentration of 3 g/L was used to simulate a monodisperse nanoparticles flux. To compare the quantity of TiO2 adsorbed by each specimen, both the exposed and the pristine samples were digested and then analyzed by total X-ray fluorescence (TXRF). The results showed a high adsorption capacity of SUNSPACE BA (3526 ± 30 mg/kg).

Sulfuric Acid Leaching of Altered Ilmenite Using Thermal, Mechanical and Chemical Activation

The kinetics of the sulfuric acid leaching of altered ilmenite, mechanisms, and process intensification methods were studied. The effect of changing the chemical composition during grinding was determined. The content of ilmenite and pseudorutile decreased from 5.3% to 3.1% and from 90.2% to 63.1%, respectively. Rutile increased from 4.5% to 28.7%, while a pseudobrookite new phase appeared in the amount of 5.1% after 2 h of grinding. It was found that the modification of raw material by sulfuric acid led to the increase of the decomposition rate, and at the same time, decreased when the ore was utilized due to an increase of insoluble TiO2 content. Isothermal conditions were evaluated with H2SO4 concentration varying from 50 to 96%. The data obtained were described with the approximation of the contracting sphere model. It was shown for the first time that H2SO4 > 85 wt% causes a sharp constant decrease of titanium. Correlating these phenomena allows for the consideration of H2SO4·H2O as reagents, rather than H2SO4 molecules. It was experimentally proven that at a temperature above 190 °C, the Ti leaching degree dropped, which is explained by the formation of polymerized TiOSO4. Finally, it was shown that adding NaF reduced the activation energy to 45 kJ/mol.

Опыт изучения перфорированной слюды из комплекса начального верхнего палеолита Монголии: трасологический анализ и датирование 40Ar/39Ar методом

Иногда в археологическом контексте могут быть обнаружены удивительные находки, которые не поддаются изучению классическими методами в силу своей уникальности. Небольшая тонкая пластина слюды со сверлением была обнаружена в 2015 г. на памятнике Харганын-Гол-5 в Северной Монголии. Комплекс горизонта 5, в контексте которого она найдена, определен нами как начальный верхний палеолит, датируемый временем около 38 тыс. лет назад (некалиброванных). Поскольку ни в один типологический ряд по украшениям эта пластина слюды не попадает, ее определили как предмет неутилитарного назначения. Использование слюды человеком фиксируется только с неолита, когда ее стали добавлять в тесто для керамики, а позднее, в Средневековье, она стала предметом торговли, поскольку использовалась в качестве оконных «стекол». Ее появление в комплексе начального верхнего палеолита поставило задачу доказать ее антропогенную модификацию, а поскольку слюда этого типа -мусковит — является довольно редкой, представилась возможность определить, откуда она была привнесена в бассейн Средней Селенги. Однако простого определения ее химического состава оказалось недостаточно. В статье мы приводим пример изучения этого предмета с позиций трасологии и геохимии. Впервые для территории Центральной Азии с помощью датирования 40Ar/39Ar методом стало возможным определить источник происхождения каменного сырья. Экспериментальное перфорирование мусковита также осуществляется впервые в мировой практике и выявляет специфику модификации этого типа сырья.

The improvement of composite plates’ indicators from cotton and flax spinning waste by modification of raw materials

The article is devoted to solve the problem of modification of the non-returnable cotton and flax spinning waste in order to improve the physical and mechanical characteristics of composite heat-insulating plates based on these wastes. The modification of the vegetable filler with a 1% solution of sulfuric acid made it possible to increase the physical and mechanical indicators of plates. The thermal insulation properties of the composite plate material with some soft acid modification of the filler did not change significantly.

The Aurignacian Viewed from Africa

The Aurignacian technocomplex in Eurasia, dated to ~43-28 ka, has no direct archeological taxonomic equivalent in Africa during the same time interval, which may reflect differences in inter-group communication or differences in archeological definitions currently in use. Extinct hominin taxa are present in both Eurasia and Africa during this interval, but the African archeological record has played little role in discussions of the demographic expansion of Homo sapiens, unlike the Aurignacian. Sites in Eurasia and Africa by 42 ka show the earliest examples of personal ornaments that result from extensive modification of raw materials, a greater investment of time that may reflect increased their use in increasingly diverse and complex social networks.

The Impact of Pollution Prevention on Toxic Environmental Releases from U.S. Manufacturing Facilities.

Between 1991 and 2012, the facilities that reported to the U.S. Environmental Protection Agency's Toxic Release Inventory (TRI) Program conducted 370,000 source reduction projects. We use this data set to conduct the first quasi-experimental retrospective evaluation of how implementing a source reduction (pollution prevention) project affects the quantity of toxic chemicals released to the environment by an average industrial facility. We use a differences-in-differences methodology, which measures how implementing a source reduction project affects a facility's releases of targeted chemicals, relative to releases of (a) other untargeted chemicals from the same facility, or (b) the same chemical from other facilities in the same industry. We find that the average source reduction project causes a 9-16% decrease in releases of targeted chemicals in the year of implementation. Source reduction techniques vary in effectiveness: for example, raw material modification causes a large decrease in releases, while inventory control has no detectable effect. Our analysis suggests that in aggregate, the source reduction projects carried out in the U.S. since 1991 have prevented between 5 and 14 billion pounds of toxic releases.

Use of Organosilicon Resin for Modifying Radio Engineering Ceramics

Results are presented for a study in the field of sintering radio engineering ceramic materials with raw material modification by polymer binders that with high-temperature treatment form nanodispersed silicon oxide. The nanomodification method proposed facilitates intensification of sintering with provision of the main ceramic engineering properties at a high level.

Synthesis of Type-A Zeolite in Hydrothermal Condition with Stellerite

Type-A zeolite was synthesized in hydrothermal condition with stellerite obtained from Guangxi. The influences of raw material modification, crystallization temperature, crystallization time and particles’size of stellerites were discussed on preparing zeolite molecular sieve. It is shown that A-type zeolite was synthesized in crystallization time of 6 hours, crystallization temperature of 90-100 °C according to certain proportion with stellerite modified by hydrochloric acid of 15%. The crystallinity of A-type zeolite is 98%, whiteness 95%, average particle size 3.72 µm and more than 90% particles’size are less than 10μm. These meet the zeolite standards of Q / Chalco A021-2004. Type-A zeolite is widely used in detergent industry, petrochemical industry, chemical industry, environmental protection and development of new functional materials fields as it has many excellent performance, such as good ion exchange, adsorption and catalysis, due to its unique crystal structure[1-4]. Because the synthesis of type-A zeolite based on chemical materials costs too much and is also restricted by chemical materials, which can not meet the needs of zeolite application. Therefore, researchers have become focus on preparing type-A zeolite with cheap mineral- materials[5-8]. In this research, we prepared type-A zeolite through Hydrothermal method with stellerites obtained from Guangxi.

Electrophosphor brightness enhancement via plasma modification of raw materials

A number of ZnS:Cu,Cl phosphors have been prepared from starting mixtures processed in different plasmas, and their properties have been studied in relation to plasma processing conditions. Plasma processing of the starting mixture is shown to increase the photo- and electroluminescence brightness of the phosphors owing to the increase in activator content and the rise in the intensity of the green emission band relative to that of the blue band.

FIRE RESISTANCE OF TWO PANEL PRODUCTS MADE FROM CHEMICALLY MODIFIED RAW MATERIAL

The objective of this paper was to examine the effect that chemical modification of raw material had on fire resistance of two panel products, namely Oriented Strand Board (OSB) and particleboard and to investigate the influence of the anhydride type. The results have shown that chemical modification affected the ignition and glowing time of two wood panel products.