Nutritional composition and physicochemical properties of oat flour sieving fractions with different particle size

Pore Structure ◽

Total Pore Volume ◽

Open Pit ◽

X Rays ◽

Factors Affecting ◽

Copper Mine ◽

Mineral Components ◽

Hydrophobic Component

AbstractTo investigate the factors affecting the wettability of copper mine blasting dust, the primary blasting dust was collected from an open-pit copper mine and separated into hydrophilic blasting dust (HLBD) and hydrophobic blasting dust (HBBD) using water flotation method. The physicochemical properties of HLBD and HBBD were measured and compared with each other. The properties included particle size distributions (PSDs), micromorphologies, pore structures, mineral components and surface organic carbon functional groups. The results show that particle size and pore structure of the blasting dust are the main factors affecting its wettability. Specifically, particle size of HBBD is smaller than that of HLBD, and their respiratory dust (less than 10 µm) accounts for 61.74 vol% and 53.00 vol%, respectively. The pore structure of HBBD is more developed, and the total pore volume of HBBD is 1.66 times larger than that of HLBD. The identical mineral compositions were detected in HLBD and HBBD by X-rays diffraction (XRD); however, the surface organic hydrophobic component of HBBD is slightly larger than that of HLBD, this may be the reason for the poor wettability of HBBD. This study is significant to understand the effects of physicochemical properties of copper mine blasting dust on its wettability.

CHEMICAL INVESTIGATIONS ON THE ACTIVE PRINCIPLES OF THE PHENOMENON OF LOCAL SKIN REACTIVITY TO BACTERIAL FILTRATES

Journal of Experimental Medicine ◽

10.1084/jem.67.1.1 ◽

1938 ◽

Vol 67 (1) ◽

pp. 1-12 ◽

Author(s):

Gregory Shwartzman ◽

S. A. Morell

Keyword(s):

Particle Size ◽

Ammonium Sulfate ◽

Culture Filtrate ◽

Active Materials ◽

Local Skin ◽

Skin Reactivity ◽

Average Porosity ◽

Active Substances ◽

Capillary Analysis

Several physicochemical properties of the active principles of the phenomenon of local skin reactivity to bacterial filtrates have been investigated. Ultrafiltration through Zsigmondy filters of graded porosities has shown that the active substances are retained by membranes finer than 100 to 120 seconds, whereas coarser ones readily permit their passage. The average porosity of this filtration end-point represents a particle size of about 50 to 100 mµ. When fractionally precipitated with ammonium sulfate, most of the activity of a culture filtrate was concentrated in the two-thirds saturated portion. Isoelectric properties were studied by means of capillary analysis and cataphoresis. At pH 3.0 and below, the substances suspended in the culture filtrates migrated to the cathode; activity in this chamber, however, could not be demonstrated. At pH 4.0 and above, reversal to the anode occurred, as the active materials became negatively charged and readily migrated to this chamber. The isoelectric point, therefore, was considered to be between pH 3.0 and 4.0. Preliminary experiments on adsorption, extraction, and pH stability have been described.

Dehumidified Air-Assisted Spray-Drying of Cloudy Beetroot Juice at Low Temperature

Applied Sciences ◽

10.3390/app11146578 ◽

2021 ◽

Vol 11 (14) ◽

pp. 6578

Author(s):

Aleksandra Jedlińska ◽

Alicja Barańska ◽

Dorota Witrowa-Rajchert ◽

Ewa Ostrowska-Ligęza ◽

Katarzyna Samborska

Keyword(s):

Particle Size ◽

Spray Drying ◽

Low Temperatures ◽

Beetroot Juice ◽

Particle Size And Morphology ◽

Size And Morphology ◽

Tapped Density ◽

Lower Loss ◽

Better Than

This paper discusses the physicochemical properties of powders obtained by spray drying of cloudy beetroot juice, using dehumidified air in variants with or without carriers. The inlet air temperature was 130 °C or 90 °C, and the addition of the carriers was at a ratio of juice to carrier solids of 3:2. In the obtained powders, the following physicochemical properties were determined: water content and water activity, apparent density, loose and tapped density, porosity, flowability, particle size and morphology, and the content and retention of betalains. It was possible to dry cloudy beetroot juice without the use of carriers at low temperatures (90 or 130 °C). The 100% beetroot powders were characterized by satisfactory physicochemical properties, often better than those with carriers (including lower hygroscopicity and higher color saturation and yield). A lower loss of betalains was found for the powders with the addition of carriers. The best process yields were obtained for the powder without carriers at 130 °C and 90 °C.

Effect of boiling on nutritional, antioxidant and physicochemical properties of edible plants (Malva parviflora and Myrtillocactus geometrizans)

Emirates Journal of Food and Agriculture ◽

10.9755/ejfa.2021.v33.i6.2726 ◽

2021 ◽

pp. 510

Author(s):

Sandoval-Gallegos Eli Mireya ◽

Arias-Rico José ◽

Cruz-Cansino Nelly del Socorro ◽

Ramírez-Ojeda Deyanira ◽

Zafra-Rojas Quinatzin Yadira ◽

...

Keyword(s):

Phenolic Compounds ◽

Antioxidant Capacity ◽

Water Retention ◽

Nutritional Composition ◽

Total Phenolic ◽

Water Retention Capacity ◽

Total Phenolic Compounds ◽

Retention Capacity ◽

Malva Parviflora

The aim of the present research was to determine the effect of boiling on nutritional composition, total phenolic compounds, antioxidant capacity, physicochemical and morphological characteristics of two edible plants Malva parviflora (mallow leaf) and Myrtillocactus geometrizans (garambullo flower). The plants had an important nutritional composition as carbohydrates (48-70 %), dietary fiber (36-42 %) and protein (13 %), as well as total phenolic compounds (468-750 mg GAE/100 g db) with a high antioxidant capacity. However, boiling originated the decrease of soluble compounds, carbohydrates, total phenolic compounds, antioxidant capacity and physicochemical properties. Plants changed to dark colors and physicochemical properties were affected, except to water retention capacity, oil retention capacity and viscosity, which had the same values in mallow leaves (raw and boiled), but increased water retention capacity in garambullo flowers, it may be by changes in the morphology observed. Therefore, is to suggest the raw consumption or with minimal cooking of these plants to avoid changes caused by thermal treatment.

Corrigendum to

Food Hydrocolloids ◽

10.1016/j.foodhyd.2018.02.025 ◽

2018 ◽

Vol 83 ◽

pp. 511 ◽

Author(s):

Peng Guo ◽

Jinglin Yu ◽

Shujun Wang ◽

Shuo Wang ◽

Les Copeland

Keyword(s):

Particle Size ◽

Durum Wheat ◽

Water Content ◽

Starch Digestibility ◽

In Vitro Starch Digestibility ◽

Wheat Grains

Studies on Physicochemical Properties of the Oil, Minerals and Nutritional Composition of Nut of Nut Grass (Cyperus rotundus)

American Journal of Food Technology ◽

10.3923/ajft.2011.1061.1064 ◽

2011 ◽

Vol 6 (12) ◽

pp. 1061-1064 ◽

Author(s):

Oseni Margaret Oladunni ◽

Oseni Olatunde Abass ◽

Amoo Isiaka Adisa

Keyword(s):

Nutritional Composition ◽

Cyperus Rotundus

Synthesis, characterization and physicochemical studies of copolymers of aniline and 3-nitroaniline

Polymer Bulletin ◽

10.1007/s00289-019-02957-y ◽

2019 ◽

Vol 77 (9) ◽

pp. 4469-4488 ◽

Author(s):

Umesh Somaji Waware ◽

A. M. S. Hamouda ◽

Dipanwita Majumdar

Keyword(s):

Thermal Stability ◽

Particle Size ◽

Electrochemical Sensors ◽

Protective Coatings ◽

Molar Ratio ◽

Energy Storage Devices ◽

Visible Absorption ◽

Storage Devices ◽

Morphological Studies

Abstract Polyaniline (PA), the versatile conducting polymer, owing to its tunable optoelectronic properties, facile preparation methodology and reversible redox behavior, has elicited much interest among current researchers, particularly in the fields of energy generation storage devices, protective coatings and electrochemical sensors. However, its commercialization has been much restricted due to low solution processability and thermal stability. Recent studies reveal that the above-mentioned challenges can effectively be addressed by copolymerization of PA with suitable components. In addition, the properties of copolymers could be modified and tuned by varying the monomer ratios. Thus, the present work is concerned with the fabrication of poly(aniline-co-3-nitroaniline) with varying compositions obtained by in situ oxidative copolymerization of aniline and 3-nitroaniline by altering the molar ratio of monomers. Optimization of the physicochemical properties such as UV–visible absorption, solubility, thermal stability, electrical conductivity and dielectric signatures, particle size and morphology was achieved by varying the composition of monomeric substituents in these copolymers. Smoother morphology of the copolymer films was revealed by morphological studies via AFM technique and supported by particle size distribution study. The physicochemical trends demonstrated that proper proportions of nitro (–NO2) group in the polymer chain are essential to achieve desired optimal physicochemical properties. Therefore, copolymers are ideally appropriate for multifaceted applications and would promote wider usage of conjugated polymers in various fields of organic-based optoelectronic as well as energy storage devices in the near future.

Characterization and influence of hydroxyapatite nanopowders on living cells

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.9.286 ◽

2018 ◽

Vol 9 ◽

pp. 3079-3094 ◽

Cited By ~ 17

Author(s):

Przemyslaw Oberbek ◽

Tomasz Bolek ◽

Adrian Chlanda ◽

Seishiro Hirano ◽

Sylwia Kusnieruk ◽

...

Keyword(s):

Particle Size ◽

Biological Activity ◽

Living Cells ◽

Great Promise ◽

Medical Applications ◽

Synthesis Methods ◽

Hydroxyapatite Nanoparticles ◽

Manufacturing Methods ◽

The Impact

Nanomaterials, such as hydroxyapatite nanoparticles show a great promise for medical applications due to their unique properties at the nanoscale. However, there are concerns about the safety of using these materials in biological environments. Despite a great number of published studies of nanoobjects and their aggregates or agglomerates, the impact of their physicochemical properties (such as particle size, surface area, purity, details of structure and degree of agglomeration) on living cells is not yet fully understood. Significant differences in these properties, resulting from different manufacturing methods, are yet another problem to be taken into consideration. The aim of this work was to investigate the correlation between the properties of nanoscale hydroxyapatite from different synthesis methods and biological activity represented by the viability of four cell lines: A549, CHO, BEAS-2B and J774.1 to assess the influence of the nanoparticles on immune, reproductive and respiratory systems.