scholarly journals BIFUNCTIONAL ADDITIVE TO DIESEL FUELS

2021 ◽  
pp. 52-56
Author(s):  
Г. М. Хамадалиева ◽  
О. А. Баулин ◽  
М. Н. Рахимов ◽  
Х. А. Ахмед
Keyword(s):  
Chemical Properties ◽  
Important Task ◽  
Wear Properties ◽  
Petrochemical Production ◽  
Wear Scar Diameter ◽  
Diesel Fuels ◽  
Physico Chemical ◽  
Depressor Effect ◽  
Positive Effect ◽  
By Products

В статье показано, что разработка отечественных присадок на сегодняшний день является актуальной и стратегически важной задачей. На основе побочных продуктов нефтехимических производств ООО «Газпром нефтехим Салават» была разработана оптимальная рецептура депрессорной присадки, показавшая свою эффективность на дизельных топливах различного состава и происхождения. Максимальный депрессорный эффект составил 18 ºС. Влияние разработанной присадки на противоизносные свойства дизельного топлива оказало также положительный эффект со снижением скорректированного диаметра пятна износа до 24%. Физико-химические свойства дизельных топлив при введении в их состав 0,2% мас. разработанной присадки удовлетворяют требованиям ГОСТ 32511-2013. The article shows that the development of domestic additives is currently an urgent and strategically important task. The optimal formulation of the depressant additive was developed based on the by- products of the petrochemical production of Gazprom Neftekhim Salavat LLC. It has been shown effectiveness on diesel fuels of various composition and produsers. The maximum depressor effect was 18 °C. The effect of the developed additive on the anti-wear properties of diesel fuel also had a positive effect with a reduction in corrected wear scar diameter to 24%. The physico-chemical properties of diesel fuels with the introduction of 0.2% by weight of the developed additive meet the requirements of GOST 32511-2013. The significant important task - the rational use of by-products is solved with the developed additive.

scholarly journals Cell Behavior of Primary Fibroblasts and Osteoblasts on Plasma-Treated Fluorinated Polymer Coated with Honeycomb Polystyrene

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 889
Author(s):  
Klára Fajstavrová ◽  
Silvie Rimpelová ◽  
Dominik Fajstavr ◽  
Václav Švorčík ◽  
Petr Slepička
Keyword(s):  
Chemical Properties ◽  
Plasma Exposure ◽  
Research Teams ◽  
Polymer Substrates ◽  
Substrate Activation ◽  
Physico Chemical ◽  
Polystyrene Solution ◽  
Primary Fibroblasts ◽  
Positive Effect ◽  
Cell Adhesion And Proliferation

The development of new biocompatible polymer substrates is still of interest to many research teams. We aimed to combine a plasma treatment of fluorinated ethylene propylene (FEP) substrate with a technique of improved phase separation. Plasma exposure served for substrate activation and modification of surface properties, such as roughness, chemistry, and wettability. The treated FEP substrate was applied for the growth of a honeycomb-like pattern from polystyrene solution. The properties of the pattern strongly depended on the primary plasma exposure of the FEP substrate. The physico-chemical properties such as changes of the surface chemistry, wettability, and morphology of the prepared pattern were determined. The cell response of primary fibroblasts and osteoblasts was studied on a honeycomb pattern. The prepared honeycomb-like pattern from polystyrene showed an increase in cell viability and a positive effect on cell adhesion and proliferation for both primary fibroblasts and osteoblasts.

Sensory and physico-chemical properties of wholegrain wheat bread prepared with selected food by-products

LWT ◽  
2019 ◽  
Vol 114 ◽  
pp. 108414 ◽  
Author(s):  
Aleksandra Torbica ◽  
Dubravka Škrobot ◽  
Elizabet Janić Hajnal ◽  
Miona Belović ◽  
Na Zhang
Keyword(s):  
Chemical Properties ◽  
Wheat Bread ◽  
Physico Chemical ◽  
By Products

scholarly journals The Effect of Chitosan on the Chemical Structure, Morphology, and Selected Properties of Polyurethane/Chitosan Composites

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1205
Author(s):  
Agnieszka Piotrowska-Kirschling ◽  
Joanna Brzeska
Keyword(s):  
Chemical Structure ◽  
Materials Science ◽  
Chemical Properties ◽  
Materials Synthesis ◽  
Physico Chemical ◽  
Structure Morphology ◽  
Basic Parameters ◽  
Properties Of Materials ◽  
The Impact ◽  
Positive Effect

Materials science is an interdisciplinary area of studies. This science focuses on the influence of the physico-chemical properties of materials on their application in human everyday lives. The materials’ synthesis should be developed in accordance with sustainable development. Polyurethanes (PUR) represent a significant consumption of plastic in the world. Modification of PUR, e.g., with polysaccharide of natural origin (chitosan, Chit), should have a positive effect on their functional properties and degradability in the natural environment. The basic parameters affecting the scope and direction of changes are the size and quantity of the chitosan particles. The impact assessment of chitosan on the chemical structure, morphology, thermal properties, crystallinity, mechanical properties, flammability, water sorption, adsorption properties, degradability, and biological activity of PUR/Chit composites (without other additives) is discussed in this article. To the best of our knowledge, recent literature does not contain a study discussing the direct impact of the presence of chitosan in the structure of PUR/Chit composite on its properties, regardless of the intended uses. This paper provides an overview of publications, which presents the results of a study on the effect of adding chitosan in polyurethane/chitosan composites without other additives on the properties of polyurethane.

scholarly journals D-Tagatose as a Sucrose Substitute and Its Effect on the Physico-Chemical Properties and Acceptability of Strawberry-Flavored Yogurt

Foods ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 256 ◽  
Author(s):  
Torrico ◽  
Tam ◽  
Fuentes ◽  
Viejo ◽  
Dunshea
Keyword(s):  
Lactic Acid ◽  
Chemical Properties ◽  
Purchase Intent ◽  
Sensory Acceptability ◽  
Marginal Effects ◽  
Physico Chemical ◽  
Red Color ◽  
Water Holding ◽  
Positive Effect ◽  
Quality And Shelf Life

Sugar not only provides the desirable sweetness but its reduction can also alter the physico-chemical properties of foods. The objective of this study was to evaluate the effects of tagatose as a sugar substitute on selected physico-chemical properties and sensory acceptability of strawberry-flavored yogurts. Six yogurt samples with decreasing concentrations of sucrose (8.50 to 1.70 g/100 g) and increasing concentrations of tagatose (0.00 to 9.24 g/100 g) were evaluated. Physico-chemical tests (pH, lactic acid (%), °Brix, water-holding capacity (WHC), viscosity, and color) were conducted to examine the quality and shelf-life of yogurts during 28 days of storage at 4 °C. An acceptability test (n = 55) was conducted to evaluate the sensory characteristics of yogurts. Sucrose reductions by the replacement of up to 80% tagatose showed marginal effects on the selected physico-chemical properties; however, the loss of red color (a*) and increase in yellowness (b*) of the tagatose-substituted samples were significant. Strawberry yogurts with tagatose replacements had similar acceptability scores for all attributes. Sucrose reduction showed a positive effect on the purchase intent of the strawberry yogurts (an increase of 3–30%). These findings can be used to understand the effects of tagatose/sucrose formulations on the acceptability and physico-chemical properties of yogurts.

scholarly journals How Do the Different Types of Carrier and Drying Techniques Affect the Changes in Physico-Chemical Properties of Powders from Chokeberry Pomace Extracts?

Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1864
Author(s):  
Anna Michalska-Ciechanowska ◽  
Aleksandra Hendrysiak ◽  
Jessica Brzezowska ◽  
Aneta Wojdyło ◽  
Agnieszka Gajewicz-Skretna
Keyword(s):  
Freeze Drying ◽  
Chemical Properties ◽  
Temperature Treatment ◽  
High Temperature Treatment ◽  
Physico Chemical ◽  
Freeze Dried ◽  
Drying Techniques ◽  
Different Types ◽  
Plant Sources ◽  
By Products

Chokeberry fruit, one of the richest plant sources of bioactives, is processed into different foodstuffs, mainly juice, which generates a considerable amount of by-products. To follow the latest trends in the food industry considering waste management, the study aimed to produce chokeberry pomace extract powders and conduct experimental and chemometric assessment of the effect of different carriers and drying techniques on the physico-chemical properties of such products. The PCA analysis showed that the examined powders were classified into two groups: freeze-dried (variation in case of moisture content, water activity, colour, and browning index) and vacuum-dried (bulk density). No clear pattern was observed for the physical properties of carrier added products. The sum of polyphenolics (phenolic acids, anthocyanins and flavonols) ranged from 3.3–22.7 g/100 g dry matter. Drying techniques had a stronger effect on the polyphenols profile than the type of carrier. Hydroxymethyl-L-furfural formation was enhanced by inulin addition during high-temperature treatment. Overall, the addition of maltodextrin and trehalose mixture for freeze drying and vacuum drying at 90 °C caused the highest retention of polyphenolics and the lowest formation of hydroxymethyl-L-furfural; however, an individual and comprehensive approach is required when the obtainment of high-quality chokeberry powders is expected.

scholarly journals Effects of organic acid on the physicochemical properties of gelatine extracted from Fringescale sardinella (Sardinella fimbriata) bones

Food Research ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 294-302
Author(s):  
N.M. Arshad ◽  
M. Abd. Ghaffar ◽  
N.F. Mohtar
Keyword(s):  
Melting Point ◽  
Physicochemical Properties ◽  
Organic Acid ◽  
Chemical Properties ◽  
Extraction Process ◽  
Gel Strength ◽  
Inorganic Acid ◽  
Alternative Source ◽  
Physico Chemical ◽  
By Products

Gelatine from marine sources especially from the fish becomes a popular alternative to replace the commercial gelatines from bovine and porcine. Fringescale sardinella (Sardinella fimbriata) is commonly used in the fish processing industry and has a high potential to produce gelatine from its by-products. The extraction of gelatine is one of the most important steps that influence its functional properties. Inorganic acid was commonly used in the extraction, however, nowadays it faces some issues due to health safety and its effect on the environment. The aim of this study was to assess the effects of organic acid (fruit vinegar) as a replacement for inorganic acid (hydrochloric acid) during extraction on the physicochemical properties of S. fimbriata gelatine. The extracted gelatines were characterized in terms of their physico-chemical properties such as the yield percentage, gel strength, melting point, molecular weight, structural composition, and amino acid analyses. Results showed that gelatine extracted with organic acid demonstrated low yield percentage (2.9±0.01%) and poor gel strength (75.9±1.06 g) and melting point (22.0±1.00°C) values compared to the standard. This gelatine also demonstrated a low amount of proline and hydroxyproline contents, which were 43.77±8.21 g/mg and 34.99±6.50 g/mg, respectively. Overall findings have suggested that different types of acid used in the extraction resulted in different physico-chemical properties of the gelatine. Such findings suggested that S. fimbriata bone hold the potential to be an alternative source for vast applications in industries. Further studies may focus on different concentrations of acid used in the extraction process. Such findings will help to improve S. fimbriata bone gelatine properties for extended uses in various industries.

scholarly journals Investigation of the effect of depressor additives on the rheological properties of oil

2021 ◽  
pp. 104-107
Author(s):  
A. Sh. Zainullina ◽  
A. Zh. Arystan
Keyword(s):  
Rheological Properties ◽  
Pour Point ◽  
Chemical Properties ◽  
Oil Fields ◽  
Chemical Characteristics ◽  
Physical And Chemical Characteristics ◽  
Physico Chemical ◽  
Physical And Chemical ◽  
Positive Effect

The article is devoted to the study of physico-chemical properties of oil fields Uzen, Kenkiyak, Martyshi and study the effect of depressor additives on the rheological properties of oil fields Uzen. The main analyses of oil were carried out, including the content of paraffins, viscosity, pour point. Depressor additives of brands were used during the research MR-1055/980, Deprop 4125, WX 161. It is established that the effect of depressor additives on oil has a positive effect on their physical and chemical characteristics.

Pectin extracted from thermally treated olive oil by-products: Characterization, physico-chemical properties, in vitro bile acid and glucose binding

2015 ◽  
Vol 43 ◽  
pp. 311-321 ◽  
Author(s):  
Fátima Rubio-Senent ◽  
Guillermo Rodríguez-Gutiérrez ◽  
Antonio Lama-Muñoz ◽  
Juan Fernández-Bolaños
Keyword(s):  
Bile Acid ◽  
Olive Oil ◽  
Chemical Properties ◽  
Glucose Binding ◽  
Physico Chemical ◽  
By Products ◽  
Thermally Treated

scholarly journals Effect of Lactose Pseudopolymorphic Transition on the Aerosolization Performance of Drug/Carrier Mixtures

Pharmaceutics ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 576 ◽  
Author(s):  
Andrea Della Bella ◽  
Michele Müller ◽  
Andrea Danani ◽  
Luciano Soldati ◽  
Ruggero Bettini
Keyword(s):  
Drug Carrier ◽  
Dry Powder Inhaler ◽  
Chemical Properties ◽  
Crystal Form ◽  
Ambient Conditions ◽  
Key Factors ◽  
Unit Operations ◽  
Physico Chemical ◽  
Anhydrous Lactose ◽  
Positive Effect

Physico-chemical properties of lactose are key factors in adhesive mixtures used as dry powder inhaler (DPI). Despite the abundant literature on this topic, the effect of the polymorphism and pseudo-polymorphism of lactose has been seldom investigated and discussed although often lactose used in DPI is subjected to unit operations, which may alter its solid-state properties. Here, we studied the aerosolization performance of salbutamol sulphate (SS) or budesonide (BUD) formulations by investigating the effect of lactose pseudopolymorphism in ternary (coarse lactose/fine lactose/drug) and binary (coarse lactose/drug) mixtures. An improvement of the aerosolization performance of SS formulations with the increase of the amount of fine micronized lactose up to 30% (fine particle fraction (FPF) = 57%) was observed. Micronized lactose contained hygroscopic anhydrous α-lactose, which converted to α-lactose monohydrate at ambient conditions. This implied that the positive effect of fines on the aerosolization performance decreased and eventually disappeared with the formulation aging. Positive effect on SS deposition was observed also with binary mixtures with anhydrous lactose, whereas the opposite occurred with budesonide-containing formulations. The collected data demonstrated the crucial role of the carrier crystal form on the positive effect of fines on the deposition.

Sign in / Sign up

Export Citation Format

Share Document