scholarly journals Raw-appearing Restructured fish models made with Sodium alginate or Microbial transglutaminase and effect of chilled storage

2013 ◽  
Vol 33 (1) ◽  
pp. 137-145 ◽  
Author(s):  
Helena Moreno ◽  
Jose Carballo ◽  
Javier Borderías
Keyword(s):  
Particle Size ◽  
Physicochemical Properties ◽  
Shelf Life ◽  
Sodium Alginate ◽  
Colour Change ◽  
Fish Muscle ◽  
Microbial Transglutaminase ◽  
Visual Appearance ◽  
Chilled Storage ◽  
Small Muscle

Restructuring by adding Sodium Alginate or Microbial Transglutaminase (MTGase) using cold gelation technology make it possible to obtain many different raw products from minced and/or chopped fish muscle that are suitable for being used as the basis of new restructured products with different physicochemical properties and even different compositions. Special consideration must be given to their shelf-life and the changes that may take place during chilling, both in visual appearance and physicochemical properties. After chilled storage, the restructured models made with different muscular particle size and composition at low temperature (5 °C), it was observed that microbial growth limited the shelf-life to 7-14 days. Mechanical properties increased (p < 0.05) during that time, and higher values were observed in samples elaborated by joining small muscle particle size than in those elaborated by homogenization. There was no clear increase in the cooking yield and purge loss, and no significant colour change (p > 0.05) was detected during storage.

scholarly journals Physicochemical properties and shelf-life of low-fat pork sausages wrapped with active film manufactured by sodium alginate and cherry tomato powder

2020 ◽  
Vol 33 (9) ◽  
pp. 1470-1476
Author(s):  
Zhuang Zhuang Qiu ◽  
Koo Bok Chin
Keyword(s):  
Physicochemical Properties ◽  
Shelf Life ◽  
Sodium Alginate ◽  
Profile Analysis ◽  
Thiobarbituric Acid ◽  
Antimicrobial Activities ◽  
Proximate Analysis ◽  
Cherry Tomato ◽  
Low Fat ◽  
Tomato Powder

Objective: This study was carried out to investigate physicochemical properties, and antioxidant and antimicrobial activities of low-fat sausages (LFSs) covered with sodium alginate (SA) film alone and with powder film (TSA-film) formed by cross-linking cherry tomato powder (CTP) and SA with calcium chloride (CaCl2).Methods: Sausages covered with the biodegradable film were assessed based on the measurement of pH, color (L*, a*, b*), proximate analysis, expressive moisture (EM), texture profile analysis, total plate counts (TPC), violet red bile, and 2-Thiobarbituric acid reactive substances (TBARS) during storage under refrigeration. LFSs wrapped with TSA-film were compared with those wrapped with SA-film and without film (control) during storage at 10°C for 35 days.Results: The LFSs covered with the mixed film had lower pH, lightness (L*), EM%, TBARS, and TPC, but lower yellowness (b*) and hardness values than those wrapped with TSA-film alone.Conclusion: Lipid oxidation and microbial growth was retarded in sausages covered with biodegradable films, especially multiple films as compared to single film, thereby resulting in extended shelf-life of the LFSs.

scholarly journals Edible coatings based on sodium alginate and ascorbic acid for application on fresh-cut pineapple (Ananas comosus (L.) Merr)

2019 ◽  
Vol 37 (3) ◽  
pp. 317-322 ◽  
Author(s):  
Alex López-Córdoba ◽  
Andrea Aldana-Usme
Keyword(s):  
Ascorbic Acid ◽  
Physicochemical Properties ◽  
Shelf Life ◽  
Sodium Alginate ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Ananas Comosus ◽  
Edible Coatings ◽  
Minimally Processed ◽  
Fresh Cut

The demand for healthy and ready-to-eat products, such asfreshly-harvested fruits, has been growing steadily over the years. However, these products are very susceptible to spoilage and have a short shelf-life. In this research, edible coatings based on sodium alginate and its blends with ascorbic acid (a natural antioxidant and anti-browning agent) were applied on fresh-cut pineapple samples, and the changes in their physicochemical properties were monitored during 10 d of storage at 4ºC. Initially, the surface of the coated fruits was brighter and statistically significant differences were not found between uncoated and coated samples (P<0.05); similar values were obtained in the parameters of soluble solids (~11 ºBrix), pH (~3.74) and titratable acidity (~0.64%). During storage, coated samples were more protected against changes in appearance compared to uncoated fresh-cut pineapple samples. The current results will be beneficial for further research that focuses on the preservation of minimally processed fruits such as pineapple.

scholarly journals Physicochemical factors affecting the wettability of copper mine blasting dust

2021 ◽  
Author(s):  
Longzhe Jin ◽  
Jianguo Liu ◽  
Jingzhong Guo ◽  
Jiaying Wang ◽  
Tianyang Wang
Keyword(s):  
Particle Size ◽  
Physicochemical Properties ◽  
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.

scholarly journals FORMULATION AND CHARACTERIZATION OF TIMOLOL MALEATE-LOADED NANOPARTICLES GEL BY IONIC GELATION METHOD USING CHITOSAN AND SODIUM ALGINATE

2019 ◽  
pp. 48-54 ◽  
Author(s):  
RISA AHDYANI ◽  
LARAS NOVITASARI ◽  
RONNY MARTIEN
Keyword(s):  
Particle Size ◽  
Zeta Potential ◽  
Sodium Alginate ◽  
Release Kinetics ◽  
In Vitro Release ◽  
Entrapment Efficiency ◽  
Polydispersity Index ◽  
Ionic Gelation ◽  
Timolol Maleate ◽  
Optimum Formula

Objective: The objectives of this study were to formulate and characterize nanoparticles gel of timolol maleate (TM) by ionic gelation method using chitosan (CS) and sodium alginate (SA). Methods: Optimization was carried out by factorial design using Design Expert®10.0.1 software to obtain the concentration of CS, SA, and calcium chloride (CaCl2) to produce the optimum formula of TM nanoparticles. The optimum formula was characterized for particle size, polydispersity index, entrapment efficiency, Zeta potential, and molecular structure. Hydroxy Propyl Methyl Cellulose (HPMC) K15 was incorporated into optimum formula to form nanoparticles gel of TM and carried out in vivo release study using the Franz Diffusion Cell. Results: TM nanoparticles was successfully prepared with concentration of CS, SA, and CaCl2 of 0.01 % (w/v), 0.1 % (w/v), and 0.25 % (w/v), respectively. The particle size, polydispersity index, entrapment efficiency, and Zeta potential were found to be 200.47±4.20 nm, 0.27±0.0154, 35.23±4.55 %, and-5.68±1.80 mV, respectively. The result of FTIR spectra indicated TM-loaded in the nanoparticles system. In vitro release profile of TM-loaded nanoparticles gel showed controlled release and the Korsmeyer-Peppas model was found to be the best fit for drug release kinetics. Conclusion: TM-loaded CS/SA nanoparticles gel was successfully prepared and could be considered as a promising candidate for controlled TM delivery of infantile hemangioma treatment.

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

1938 ◽  
Vol 67 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Gregory Shwartzman ◽  
S. A. Morell
Keyword(s):  
Particle Size ◽  
Physicochemical Properties ◽  
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.

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

2021 ◽  
Vol 11 (14) ◽  
pp. 6578
Author(s):  
Aleksandra Jedlińska ◽  
Alicja Barańska ◽  
Dorota Witrowa-Rajchert ◽  
Ewa Ostrowska-Ligęza ◽  
Katarzyna Samborska
Keyword(s):  
Particle Size ◽  
Physicochemical Properties ◽  
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.

scholarly journals PREPARATION AND EVALUATION OF CHITOSAN SODIUM ALGINATE CARBAMAZEPINE MICROSPHERES

2017 ◽  
Vol 10 (3) ◽  
pp. 271 ◽  
Author(s):  
Sreeja C Nair ◽  
Karthika Ramesh ◽  
Krishnapriya M ◽  
Asha Paul
Keyword(s):  
Drug Delivery ◽  
Particle Size ◽  
Controlled Release ◽  
Sodium Alginate ◽  
Physical Parameters ◽  
Effective Management ◽  
Release Drug ◽  
Conventional Drug ◽  
Preparation And Evaluation ◽  
Evaluation Parameters

ABSTRACTObjective: The objective behind our study is that a mucoadhesive rectal hydrogel chitosan sodium alginate carbamazepine (CBZ) microspheres forthe purpose of controlled release for the treatment of epilepsy to avoid the possible side effects.Methods: The study was conducted to formulate controlled release chitosan sodium alginate CBZ microspheres with the dispersion of CBZ into thenatural polymers chitosan and sodium alginate forming microspheres conducting along with their evaluation studies.Results: The formulated microspheres were subjected to various evaluation parameters, and all the physical parameters examined are within theacceptable limits. Further, the optimized microsphere formulation (CM5) was characterized. Hence, the developed optimized microsphere formulation(CM5) seems to be a viable substitute to conventional drug delivery system for the effective management of epilepsy.Conclusion: The prepared formulation also provides a desired CBZ loaded sodium alginate microspheres with the controlled release drug delivery.Keywords: Carbamazepine, Sodium alginate microspheres, Particle size.

Corrigendum to

2018 ◽  
Vol 83 ◽  
pp. 511 ◽  
Author(s):  
Peng Guo ◽  
Jinglin Yu ◽  
Shujun Wang ◽  
Shuo Wang ◽  
Les Copeland
Keyword(s):  
Particle Size ◽  
Physicochemical Properties ◽  
Durum Wheat ◽  
Water Content ◽  
Starch Digestibility ◽  
In Vitro Starch Digestibility ◽  
Wheat Grains
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