scholarly journals White Bread Fortified with Calcium from Eggshell Powder

2020 ◽  
Vol 71 (7) ◽  
pp. 299-306
Author(s):  
Nicoleta Platon ◽  
Vasilica-Alisa Arus ◽  
Ana-Maria Georgescu ◽  
Ileana Denisa Nistor ◽  
Narcis Barsan
Keyword(s):  
Food Industry ◽  
Chemical Properties ◽  
Bread Quality ◽  
White Bread ◽  
Waste Recovery ◽  
Physico Chemical ◽  
Bread Crust ◽  
Powder Addition ◽  
Positive Effect

This paper presents the preparation of white bread with different hen eggshell powder additions. The aim of this paper is to resolve at least two important aspects: the waste recovery from food industry and fortification of white bread with minerals (calcium). The addition of eggshell powder to the white bread preparation was up to 2% and an increase in bread quality was on elasticity and humidity starting with 0.5% eggshell powder addition. Bread aging occurred 10 to 12 h after its baking. After 24 h, all physico-chemical properties of bread crust and crumb in the case of fortified bread with calcium had a positive effect.

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.

scholarly journals Optimization of Electrolysis Parameters for Green Sanitation Chemicals Production Using Response Surface Methodology

Processes ◽  
2020 ◽  
Vol 8 (7) ◽  
pp. 792
Author(s):  
Nurul Izzah Khalid ◽  
Nurul Shaqirah Sulaiman ◽  
Norashikin Ab Aziz ◽  
Farah Saleena Taip ◽  
Shafreeza Sobri ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Food Industry ◽  
Chemical Properties ◽  
Bactericidal Effect ◽  
Electrolyzed Water ◽  
Optimum Parameters ◽  
Physico Chemical ◽  
Different Types ◽  
Different Temperatures ◽  
Optimized Conditions

Electrolyzed water (EW) shows great potential as a green and economical sanitation solution for the food industry. However, only limited studies have investigated the optimum electrolysis parameters and the bactericidal effect of acidic electrolyzed water (AcEW) and alkaline electrolyzed water (AlEW). Here, the Box–Behnken experimental design was used to identify the optimum parameters. The tests were conducted with different types of electrodes, electrical voltages, electrolysis times, and NaCl concentrations. There were no obvious differences observed in the physico-chemical properties of EW when different electrodes were used. However, stainless steel was chosen as it meets most of the selection criteria. The best-optimized conditions for AcEW were at 11.39 V, 0.65 wt.% NaCl, and 7.23 min, while the best-optimized conditions for AlEW were at 10.32 V, 0.6 wt.% NaCl, and 7.49 min. The performance of the optimum EW (AcEW and AlEW) compared with commercial cleaning detergents for the food industry was then evaluated. The bactericidal activity of AcEW and AlEW was examined against Escherichia coli ATCC 10536 at different temperatures (30 °C and 50 °C) for 30 s. The results show that both AcEW and AlEW have the ability to reduce the Escherichia coli to non-detectable levels (less than 2 log CFU/mL).

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.

Extraction of Collagen from Catfish (Clarias gariepnus) Waste and Determination of its Physico-chemical Properties

2012 ◽  
Vol 9 (1) ◽  
pp. 29
Author(s):  
Normah Ismail ◽  
Nurul Asyiraf Abdul Jabar
Keyword(s):  
Thermal Stability ◽  
Food Industry ◽  
Chemical Properties ◽  
White Crystal ◽  
Scanning Calorimetry ◽  
Good Thermal Stability ◽  
Physico Chemical ◽  
Pale Colour ◽  
Increasing Temperature

Collagen was extracted from catfish (Clarias gariepnus) waste using 0.5M acetic acid and its subsequent precipitation in 2.6M NaCl. The resultant collagen was analysed with respect to its moisture content and physico­chemical properties including yield, pH, protein content, colour, odour and thermal stability. A yield of 16. 4% and positive collagen attributes indicate that catfish waste has potential as a collagen source. The snowy white, crystal-like and light textured collagen comprises of 5.97% protein and 0.46% moisture, and exhibits a pH of 4.75. Sensory evaluation indicates that the collagen has a slight fishy odour. Viscosity analysis indicates a steady decrease with increasing temperature over the range considered (20-50°C). The pale colour exhibited and limited odour emitted by the extracted collagen indicate that catfish waste collagen could be applied in the food industry without resulting in any undesirable food products attributes. Differential Scanning Calorimetry (DSC) analysis indicated that the collagen exhibits good thermal stability and denatures at a high temperature in a similar manner to mammalian collagen.

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 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.

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.

scholarly journals Cytocompatibility of Polymethyl Methacrylate Honeycomb-like Pattern on Perfluorinated Polymer

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3663
Author(s):  
Klaudia Hurtuková ◽  
Veronika Juřicová ◽  
Klára Fajstavrová ◽  
Dominik Fajstavr ◽  
Nikola Slepičková Kasálková ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Polymethyl Methacrylate ◽  
Cellular Response ◽  
Polymer Surface ◽  
Chemical Properties ◽  
Lower Amount ◽  
Polymer Scaffold ◽  
Plasma Exposure ◽  
Physico Chemical ◽  
Positive Effect

In this study, we present a simple approach for developing a biocompatible polymer scaffold with a honeycomb-like micropattern. We aimed to combine a plasma treatment of fluorinated ethylene propylene (FEP) substrate with an improved phase separation technique. The plasma exposure served for modification of the polymer surface properties, such as roughness, surface chemistry, and wettability. The treated FEP substrate was applied for the growth of a honeycomb-like pattern from a solution of polymethyl methacrylate (PMMA). The properties of the pattern were strongly dependent on the conditions of plasma exposure of the FEP substrate. The physico-chemical properties of the prepared pattern, such as changes in wettability, aging, morphology, and surface chemistry, were determined. Further, we have examined the cellular response of human osteoblasts (U-2 OS) on the modified substrates. The micropattern prepared with a selected combination of surface activation and amount of PMMA for honeycomb construction showed a positive effect on U-2 OS cell adhesion and proliferation. Samples with higher PMMA content (3 and 4 g) formed more periodic hexagonal structures on the surface compared to its lower amount (1 and 2 g), which led to a significant increase in the pattern cytocompatibility compared to pristine or plasma-treated FEP.

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