scholarly journals Encapsulation of Cochleates Derived from Salmonella Infantis with Biopolymers to Develop a Potential Oral Poultry Vaccine

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3426
Author(s):  
Constanza Avendaño ◽  
Sonia Vidal ◽  
María Gabriela Villamizar-Sarmiento ◽  
Miguel Guzmán ◽  
Héctor Hidalgo ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Protein Content ◽  
Spray Drying ◽  
Postmortem Examination ◽  
Ftir Analysis ◽  
Future Studies ◽  
Ionotropic Gelation ◽  
Potential Vaccine ◽  
Liquid Suspensions ◽  
Poultry Vaccine

The aim of this study was to develop and characterize Salmonellaenterica serovar Infantis (S. Infantis) cochleates protected by encapsulation technology as a potential vaccine and to determine its safety in pullets. Cochleates were encapsulated by two technologies, spray drying and ionotropic gelation at different concentrations (0–15% v/v), and were characterized by physicochemical properties, protein content and Fourier Transform Infrared Spectroscopy (FTIR). The cochleates were white liquid suspensions with tubular shapes and a protein content of 1.0–2.1 mg/mL. After encapsulation by spray drying, microparticles ranged in size from 10.4–16.9 µm, were spherical in shape, and the protein content was 0.7–1.8 mg/g. After encapsulation by ionotropic gelation, beads ranged in size from 1620–1950 µm and were spherical in shape with a protein content of 1.0–2.5 mg/g. FTIR analysis indicated that both encapsulation processes were efficient. The cochleates encapsulated by ionotropic gelation were then tested for safety in pullets. No ill effect on the health of animals was observed upon physical or postmortem examination. In conclusion, this study was the first step in developing a potential oral S. Infantis vaccine safe for poultry using a novel cochleate encapsulation technology. Future studies are needed to determine the effectiveness of the vaccine.

scholarly journals Synthesis of Novel Arginine-Based Flame Retardant and Its Application in Lyocell Fabric

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3588
Author(s):  
Jiayi Chen ◽  
Yansong Liu ◽  
Jiayue Zhang ◽  
Yuanlin Ren ◽  
Xiaohui Liu
Keyword(s):  
Fourier Transform ◽  
Heat Release ◽  
Flame Retardant ◽  
Photoelectron Spectroscopy ◽  
Fourier Transform Infrared ◽  
Ftir Analysis ◽  
Excellent Thermal Stability ◽  
X Ray ◽  
Cone Calorimeter Test ◽  
Before And After

Lyocell fabrics are widely applied in textiles, however, its high flammability increases the risk of fire. Therefore, to resolve the issue, a novel biomass-based flame retardant with phosphorus and nitrogen elements was designed and synthesized by the reaction of arginine with phosphoric acid and urea. It was then grafted onto the lyocell fabric by a dip-dry-cure technique to prepare durable flame-retardant lyocell fabric (FR-lyocell). X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FTIR) analysis demonstrated that the flame retardant was successfully introduced into the lyocell sample. Thermogravimetric (TG) and Raman analyses confirmed that the modified lyocell fabric featured excellent thermal stability and significantly increased char residue. Vertical combustion results indicated that FR-lyocell before and after washing formed a complete and dense char layer. Thermogravimetric Fourier-transform infrared (TG-FTIR) analysis suggested that incombustible substances (such as H2O and CO2) were produced and played a significant fire retarding role in the gas phase. The cone calorimeter test corroborated that the peak of heat release rate (PHRR) and total heat release (THR) declined by 89.4% and 56.4%, respectively. These results indicated that the flame retardancy of the lyocell fabric was observably ameliorated.

scholarly journals SCREENING FOR PHYTOCHEMICALS AND FTIR ANALYSIS OF MYRISTICA DACTYLOIDS FRUIT EXTRACTS

2016 ◽  
Vol 9 (1) ◽  
pp. 315 ◽  
Author(s):  
P. Rajiv ◽  
A. Deepa ◽  
P. Vanathi ◽  
D. Vidhya
Keyword(s):  
Fourier Transform ◽  
Methanolic Extract ◽  
Phytochemical Analysis ◽  
Ftir Analysis ◽  
Spectroscopy Analysis ◽  
Standard Methods ◽  
Fruit Extracts ◽  
Ft Ir ◽  
Amine Groups ◽  
Ir Analysis

<p><strong>Objective: </strong>The present investigation focus on screening of phytochemicals and FT-IR analysis of <em>Myristica dactyloids </em>fruit extracts. The fruit extracts were prepared using five different solvents.</p><p><strong>Methods: </strong>The phytochemical analysis and FT-IR (Fourier transform infrared spectroscopy) analysis were performed using standard methods.</p><p><strong>Results: </strong>The results reveals that the alkaloids, steroids, flavonoids, phenolic compounds, proteins, carbohydrates, cardio glycosides and saponins were present in methanolic extract when compared to other solvent extracts. FT-IR analysis shows the presence of different functional groups such as carboxylic acids, aromatics, alkanes, alcohols, phenols, aliphatic amines, alkenes and amine groups in the fruit extracts.</p><p><strong>Conclusion: </strong>The study concluded that the methanolic extract (<em>M. dactyloides </em>fruit) has potential bioactive compounds.</p>

TECHNOLOGICAL APPROACHES TO THE ORGANIZATION OF PRODUCTION OF DRY MILK PRODUCT WITH A REDUCED PROTEIN CONTENT

2020 ◽  
pp. 93-111
Author(s):  
I. Miklukh ◽  
L. Sokolovskaya ◽  
E. Bespalova ◽  
O. Soroko ◽  
E. Efimova ◽  
...  
Keyword(s):  
Protein Content ◽  
Spray Drying ◽  
Scientific Research ◽  
Milk Product ◽  
Dry Milk ◽  
Dry Mixing ◽  
Mixing Method ◽  
Organization Of Production ◽  
Formula Composition

The article presents the results of scientific research on the development of technology for the production of dry milk product with a reduced protein content. The technologies of production of the developed products by the method of spray drying of the normalized mixture and the method of mixing dry components are proposed. The formula composition of a dry milk product with a reduced protein content produced by spray drying, including permeate, milk cream with possible use of maltodextrin, and dry mixing method – dry permeate, dry cream with possible use of maltodextrin, lactose, was selected.

A comparison of antioxidant and Fourier Transform Infrared Spectroscopy (FTIR) analysis on extracts of Syzygium guineenses (Myrtaceae)

2019 ◽  
Vol 1 (2) ◽  
pp. 1-7
Author(s):  
O.O. Shonekan ◽  
◽  
A.C. Otuka ◽  
D.K. Adeyemi ◽  
O.T. Fatunsin ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Functional Groups ◽  
Methanol Extract ◽  
Antioxidant Activities ◽  
Fourier Transform Infrared ◽  
Hexane Extract ◽  
Ftir Analysis ◽  
Dot Blot ◽  
Absorption Bands ◽  
Yellow Colour

Background: Syzygium guineenses, (the most common and abundant specie in Nigeria) is a medicinal plant used by traditional practitioners in northern Nigeria for a variety of healing purposes. Objective: The main objective of this project was to carry out a comparison of antioxidant activities and Fourier Transform Infrared Spectrophotometric (FTIR) analysis on both methanol and hexane leaf extracts of S. guineenses. Methods: Phytochemical screening, Semi-quantitative DPPH (1,1-diphenyl-2-picrylhydrazyl)- dot blot assay and FTIR analysis were performed on both extracts to determine antioxidant activity and identify the functional groups present. Results: Phytochemicals tested for, were observed to be more prominent in the methanol extract than hexane. The in vitro antioxidant assay also revealed a more intense yellow colour of inhibition in methanol extract than the hexane extract. The FTIR spectra revealed different characteristic peak values with various functional compounds in both extracts. The methanol extract displayed major peaks of absorption at 3341 cm-1 (-OH) for alcohol, 1736 cm-1 (C=O) carbonyl group, 1161.83 cm-1, 1036.49 cm-1 (C-O) of esters. Other absorption bands like 1452.25 cm-1 and 1612.20 cm-1 for alkenes were present in both extracts. Conclusion: This result shows that the methanol extract of S. guineenseshas a higher potential of phytochemicals, antioxidants and functional groups than the hexane extract.

Fourier transform infrared (FTIR) analysis

2022 ◽  
pp. 295-320
Author(s):  
Mukesh Kumar Singh ◽  
Annika Singh
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Ftir Analysis

Response of Functionality Graded Hydroxyapatite/F-75 in Saline Solution 0.9% NaCl

2013 ◽  
Vol 795 ◽  
pp. 338-342
Author(s):  
Noorazimah Ab Llah ◽  
Shamsul Baharin Jamaludin ◽  
Nur Hidayah Ahmad Zaidi
Keyword(s):  
Fourier Transform ◽  
Saline Solution ◽  
Mass Gain ◽  
Immersion Test ◽  
Passive Layer ◽  
Functionally Graded ◽  
Apatite Formation ◽  
Ftir Analysis ◽  
Powder Metallurgy Technique ◽  
Layer Formation

Functionally graded hydroxyapatite (HAP) /F-75 was fabricated using powder metallurgy technique. Samples fabricated were tested inside 0.9% NaCl to check their bioactivity reaction. After immersed, samples were analyzed using Fourier Transform Infrared (FTIR) and mass change. Result showed that mass gain decreased as the percentage of HAP in the intermediate layer increased. Mass gain obtained after immersion test because of the passive layer formation on the F-75 surface. Dissolution of HAP was occurred as the FTIR analysis detected the existence of phosphate, and hydroxide ions bands inside the solution. The dissolution process is the part of the mechanism of apatite formation. The apatite layer formation is important to encourage the formation of new bone.

Synergistic Antioxidation Properties of Tin Dialkyldithiocarbamate With Dialkyldiphenylalmine

2009 ◽  
Author(s):  
Jian-Qiang Hu ◽  
Ke-Yi Gao ◽  
Da-Wei Liu
Keyword(s):  
Thin Film ◽  
Differential Scanning Calorimetry ◽  
Fourier Transform ◽  
Chemical Structure ◽  
Ftir Analysis ◽  
Synthetic Lubricant ◽  
Scanning Calorimetry ◽  
Oxidation Induction Time ◽  
Pentaerythritol Ester ◽  
Carbonyl Peak

Differential scanning calorimetry (DSC) and thin film micro oxidation test (TMOT) were employed to evaluate the antioxidation properties of tin dialkyldithiocarbamate (SnDDC) with p,p′dioctyldiphenylamine (DODPA) antioxidant in pentaerythritol ester (PE) or polyalphaolefin synthetic lubricant (PAO), and their chemical structure were identified by fourier transform infrared spectroscopy (FTIR) analysis. DSC test shows that incipient oxidation temperature and oxidation induction time of DODPA-containing PE were improved significantly by SnDDC addition, SnDDC shows a good oxidative synergism with DODPA antioxidant. TMOT results indicates that the combination of SnDDC and DODPA in polyalphaolefin can also effectively reduce the weight lost, carbonyl peak square index and diposits of oxidized oils, which confirm that the combination of SnDDC and DODPA exhibit good synergistic antioxidation properties and deposits inhibition.

Membrane fouling caused by sub-micron particles in a mixed liquor suspension of an MBR

2013 ◽  
Vol 67 (11) ◽  
pp. 2602-2607 ◽  
Author(s):  
K. Kimura ◽  
R. Ogyu ◽  
T. Miyoshi ◽  
T. Naruse ◽  
T. Tsuyuhara ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Membrane Fouling ◽  
Municipal Wastewater ◽  
Size Fraction ◽  
Fourier Transform Infrared ◽  
Pilot Scale ◽  
Membrane Bioreactors ◽  
Ftir Analysis ◽  
Mixed Liquor ◽  
Pore Plugging

Membrane fouling needs to be mitigated for widespread use of membrane bioreactors (MBRs). It has been pointed out that particles with small sizes found in supernatants (sub-micron particles) of mixed liquor suspensions of MBRs are important in the evolution of membrane fouling of this technology. However, information on characteristics of sub-micron particles in MBRs is still insufficient. In this study, a pilot-scale MBR treating municipal wastewater was used to investigate and characterize sub-micron particles in an MBR and to identify the size fraction(s) responsible for irreversible fouling in an MBR. It was clearly shown that characteristics of sub-micron particles in the MBR varied considerably depending on their sizes. Results of Fourier transform infrared (FTIR) analysis and monosaccharide analysis suggested that irreversible fouling in this study was mainly caused by the specific size fraction of 0.1–0.45 μm, which was close to the size of micropores of the membrane used. Pore plugging might explain this to some extent.

Sign in / Sign up

Export Citation Format

Share Document