scholarly journals Physicochemical Properties of Milkfish (Chanos-chanos) Surimi Powder

2019 ◽  
pp. 14-21
Author(s):  
S Malle ◽  
A B Tawali ◽  
M M Tahir ◽  
M Bilang
Keyword(s):  
Physicochemical Properties ◽  
Ash Content ◽  
Technology Support ◽  
Chanos Chanos ◽  
Great Opportunity ◽  
South Sulawesi ◽  
Different Types ◽  
Freezing Condition ◽  
Fish Product ◽  
Ph Range

The production of milkfish in South Sulawesi is considerably high and the processing of milkfish surimi has been done to produce fish jelly products. Generally, surimi must be kept in freezing condition. Therefore we need technology support in order to easy processing of fish product in storage and efficient issue in terms of distribution. One that can be done is that to process it into surimi powder. The surimi powder of milkfish has a great opportunity to develop for diversification of fishery products. The aim of this study was to determine the physicochemical properties of milkfish surimi fish with the addition of different types of dryoprotectant : 2% carragenan (C) ; 4% sucrose + 2% carragenan (Su+C) ; 4% sorbitol + 2% carrageenan (So+C) ; 6% trehalose + 2% carragenan (T+C) with vacuum drying. The results showed that the milkfish surimi powder contains 7.22 - 7.91% moisture content; protein 57.06 - 61.9%; fat 9.62 - 10.88%; ash content 1.35 - 1.48% ; surimi powder yield 13.3 - 14.65%; WHC levels 6.42 - 14.64 mL/g ; pH range 6.37 - 6.75; whiteness 61.51 - 72.35. The addition of trehalose 6% + 2% carrageenan (T+C) as dryoprotectant has better physicochemical properties compared with other treatments.

SIGNIFICANT EFFECT OF PH ON PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS USING SEMICONDUCTOR CATALYSTS

2016 ◽  
Vol 78 (8-3) ◽  
Author(s):  
Nur Farhana Jaafar ◽  
Aishah Abdul Jalil ◽  
Sugeng Triwahyono ◽  
Adnan Ripin ◽  
Mohamad Wijayanuddin Ali
Keyword(s):  
Carbon Dioxide ◽  
Methyl Orange ◽  
Physicochemical Properties ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Ph Value ◽  
Effect Of Ph ◽  
Electrolysis Method ◽  
Ph Range ◽  
Positively Charged

Photocatalytic is one of the inexpensive and non-toxic techniques for degradation of organic pollutants into harmless substances such as water and carbon dioxide. In this study, simple electrolysis method was used in preparation of Ag/TiO2 and α-Fe2O3/HY catalysts. The physicochemical properties of the catalysts were studied using XRD, FTIR, FESEM-EDX and surface area analysis. The pH of solution plays an important role in the photocatalytic degradation of organic pollutants which influences the surface-charge properties of the catalysts. Ag/TiO2 and α-Fe2O3/HY were used as catalyst on degradation of 2-chlorophenol (2-CP) and methyl orange (MO), respectively. The effect of pH on degradation of 2-CP and MO were investigated over a pH range from 2 to 9. Higher degradation of 2-CP and MO were obtained at pH 5 (74%) and pH 2 (80%), respectively. This finding might be explained by the amphoteric performance of the catalyst using point zero charge (pHZPC). The pHZPC for Ag/TiO2 and α-Fe2O3/HY was found to be at pH 6.3 and pH 7.2, respectively. Hence, the activities of the catalysts may have been affected by the existence of a strong electrostatic field between the positively charged catalysts surface and negatively charged 2-CP and MO caused a pH value lower than their pHZPC give greater degradation.

scholarly journals STUDY OF GELATIN FROM DUCK BONE AS AN ALTERNATIVE SOURCES OF HALAL GELATIN

2020 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Muhammad Habbib Khirzin
Keyword(s):  
Hydrochloric Acid ◽  
Physicochemical Properties ◽  
Protein Content ◽  
Water Content ◽  
Extraction Method ◽  
Extraction Process ◽  
Ash Content ◽  
Acid Extraction ◽  
Alternative Sources

Gelatin is an intermediate ingredient which is oftenly used in many field such as food, pharmacy, and cosmetics. It is usually extracted from pig and cow. Halal issue of gelatin sources and the outbreaks of mad cow diseases encouraged people to find an alternative sources of gelatin. One of the alternative sources of gelatin was duck bone. The aim of this research was to describe physicochemical properties of duck bone gelatin which is extracted by using acid extraction method as an alternative sources of halal gelatin. The extraction of duck bone gelatin used 5% concentration of HCl (hydrochloric acid). The extraction process consisted of four steps, they were degreassing, defating, demineralization, and acid extraction. The result showed that gelatin which was extracted from duck bone had these several characteristic: yield of 6.24%, pH 4.0, water content of 13.43%, ash content of 13.42%, protein content of 65.43%, and whiteness degree of 30.35%. Generally, gelatin which was extracted from duck bone had similar characteristic with commercial gelatin and SNI standard. Further researcher had been suggested to reoptimized extraction method in order to reduce ash content.

scholarly journals Phosphate and Ammonium Removal from Wastewaters Using Natural-Based Innovative Bentonites Impacting on Resource Recovery and Circular Economy

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6684
Author(s):  
Miltiadis Zamparas ◽  
Grigorios L. Kyriakopoulos ◽  
Marios Drosos ◽  
Vasilis C. Kapsalis
Keyword(s):  
Circular Economy ◽  
Low Cost ◽  
Resource Recovery ◽  
Sem Analysis ◽  
Langmuir Model ◽  
Treated Wastewater ◽  
Ammonium Removal ◽  
Different Types ◽  
Long Time ◽  
Ph Range

The research objective of the study is the estimation of a novel low-cost composite material f-MB (Fe-modified bentonite) as a P and N adsorbent from wastewaters. Τhe present study aimed at examining the phosphate and ammonium removal efficiency from different types of wastewater using f-MB, by conducting bench-scale batch experiments to investigate its equilibrium characteristics and kinetics. The SEM analysis revealed that the platelets of bentonite in f-MB do not form normal bentonite sheets, but they have been restructured in a more compact formation with a great porosity. Regarding the sorption efficiencies (Qm), the maximum phosphate sorption efficiencies (Qm) calculated using the Langmuir model were 24.54, 25.09, 26.13, 24.28, and 23.21 mg/g, respectively, for a pH range of 5 to 9. In addition, the maximum NH4+-N adsorption capacities (Qm) calculated from the Langmuir model were 131.8, 145.7, 168.5, 156.7, and 159.6 mg/g, respectively, for a pH range from 5 to 9. Another important finding of this study is that f-MB can recover P from treated wastewater impacting on resource recovery and circular economy (CE). The modified clay f-MB performed the phosphate and ammonium recovery rates of 80% and 78.5%, respectively. Finally, f-MB can slowly release the largest proportion of phosphate and ammonium ions for a long time, thus extending the application of the f-MB material as a slow-release fertilizer and soil improver.

scholarly journals BIOCHEMICAL GENETIC DIFFERENTIATION AMONG WILD POPULATIONS OF MILKFISH (Chanos chanos) IN INDONESIA

2017 ◽  
Vol 4 (1) ◽  
pp. 11
Author(s):  
Ketut Sugama ◽  
Agus Prijono
Keyword(s):  
Population Structure ◽  
Genetic Differentiation ◽  
Coastal Water ◽  
Wild Populations ◽  
Chanos Chanos ◽  
South Sulawesi ◽  
Biochemical Genetic

Four populations of milkfish (Chanos chanos ) were collected (N=100) from coastal water of  Aceh. Bali, East Java and South Sulawesi and were examined electrophoretically at 29 loci to deterurine the genetic vuriability and the population structure.

scholarly journals Microbial Communities and Physicochemical Properties of Myeolchi Jeotgal (Anchovy Jeotgal) Prepared with Different Types of Salts

2017 ◽  
Vol 27 (10) ◽  
pp. 1744-1752
Author(s):  
Jae Min Shim ◽  
Kang Wook Lee ◽  
Zhuang Yao ◽  
Jeong A Kim ◽  
Hyun-Jin Kim ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Microbial Communities ◽  
Different Types

scholarly journals Nutrient composition of milkfish (Chanos chanos, Forskal) from Pangkep, South Sulawesi, Indonesia

2019 ◽  
Vol 25 (1) ◽  
pp. 155-162
Author(s):  
Sriwati Malle ◽  
◽  
Abu Bakar Tawali ◽  
Mulyati Muhammad Tahir ◽  
Maryati Bilang ◽  
...  
Keyword(s):  
Nutrient Composition ◽  
Chanos Chanos ◽  
South Sulawesi

scholarly journals From the Beehives: Identification and Comparison of Physicochemical Properties of Algerian Honey

Resources ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 94
Author(s):  
Mokhtar Guerzou ◽  
Hani Amir Aouissi ◽  
Ahlem Guerzou ◽  
Juris Burlakovs ◽  
Salaheddine Doumandji ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Physicochemical Properties ◽  
Water Content ◽  
Physicochemical Parameters ◽  
Ash Content ◽  
International Standards ◽  
Free Acidity ◽  
Codex Alimentarius ◽  
Index Analysis ◽  
Geographical Locations

In this study, the authors aimed at characterizing 11 Algerian kinds of honey taken from various geographical locations (beehives located at Djelfa (Medjbara and Dzaira), Laghouat, Aflou, Medea, Tiaret, Sidi bel-Abbes, Tiaret, Ain-Safra, Mostaganem, El Bayadh, and Ghardïa). The authors investigated the physicochemical parameters of these honey samples, including density, water content, electrical conductivity, ash content, pH, hydroxymethylfurfural (HMF) content, free acidity, and color. The physicochemical parameters obtained were found to be within acceptable ranges according to the international standards (Codex Alimentarius) for 9 out of 11 analyzed samples: density 1.38–1.50 g/cm3 (the same as kg/L, as commonly used for honey), water content 14.03–18.80%, electrical conductivity 0.38 × 10−1 − 6.41 × 10−1 mS/cm, ash content 0.06–0.48%, pH 3.50–4.50, free acidity 11–47 meq/kg, and color 1.1–9.2 Pfund index. Analysis of HMF content showed that only two honey samples have high values (117.7 and 90.0 meq/kg). Most samples of Algerian honey are of suitable quality according to international standards.

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