scholarly journals The Characteristics of Sodium Alginate from Brown Seaweed Sargassum crassifolium with Different Filtering Tools

2017 ◽  
Vol 20 (2) ◽  
pp. 351 ◽  
Author(s):  
Ellya Sinurat ◽  
Retni Marliani
Keyword(s):  
Moisture Content ◽  
Sodium Alginate ◽  
Brown Seaweed ◽  
Gel Strength ◽  
Filter Press ◽  
Average Yield ◽  
The World ◽  
Filtration Stage ◽  
Alginate Extraction

Indonesia is the largest producer of seaweed in the world, one of the potential marine biological resources is the brown seaweed (Sargassum crassifolium) known as an alginate producer. Alginate extraction through demineralization stage, neutralization, extraction, filtration, precipitation and bleaching. Filtration stage is a very influential process on the quality of alginate produced. In this research, filtering using different tools screen vibrator and hydraulic filter press was conducted to characterize Na-alginate seaweed Sargassum crassifolium using both filter tools. Quality of sodium alginate (yield, viscosity, gel strength, syneresis, whiteness, moisture content, ash, and pH) was determined. The result showed that the viscosity, gel strength, syneresis, and whiteness of alginate obtained using filter press showed the best result. The yield of sodium alginate produced by filter press was 10.91±4.33%, with characteristics of viscosity 82.66±112.46 cP, gel strength 353.54±184.51 g/cm2, syneresis 2.99±0.55%, whiteness 60.53±9.09%, moisture content 13.31±0.77%, ash 26.69±0.82% and pH 6.05±0.57.  Based on a parameter of alginate (yield, moisture content, ash, and pH) showed that vibrator method produced alginate with better characteristics. The sodium alginate produced has average yield 19.22±5.68%, viscosity 57.5±21.79 cP, whiteness 29.7±4.45%, gel strength 327.63±55.15 g/cm2, syneresis 4.34±0.78%, moisture content 10.23±1.68%, ash 24.94±4.41% and pH 7.03± 2.60. Operationally the filter press was more effective and efficient in filtering to result from Na-alginate compared to the screen vibrator.

scholarly journals Acid and calcium alginate extraction method affected the quality of alginate from brown seaweed Sargasum hystrix J. Agardh

2018 ◽  
Vol 21 (3) ◽  
pp. 532
Author(s):  
Ivana M. Diharningrum ◽  
Amir Husni
Keyword(s):  
Moisture Content ◽  
Sodium Alginate ◽  
Extraction Method ◽  
Calcium Alginate ◽  
Functional Group ◽  
Brown Seaweed ◽  
Extraction Methods ◽  
Ash Content ◽  
Alginate Extraction

Seaweed is one of the marine biological resources of Indonesia that has a high potential to produce alginate, however, the most appropiate method to extract the alginate of high quality is still unknown. This study was aimed to determine the effects of extraction methods on the quality of alginate from seaweed Sargassum hystrix and compared the extraction cost. Two extraction methods were used in this study including acidic and calcium method. The yield, moisture content, viscosity, pH, whiteness degree, functional group, ash content and extraction cost were evaluated. The viscosity and whiteness degree of sodium alginate from acidic method was 126.00±7.21 cPs and 75.27±0.58 cPs, respectively. Meanwhile the calcium method produced sodium alginate with viscosity 7.23±1.50 cPs and whiteness degree 68.95±0.18 cPs. The yield, moisture content, and ash content of alginate produced by acidic method were lower compare to that of produced by calcium method. Cost analysis showed the acidic method required higher cost. Nevertheless, these resultssuggest that acidic method produce alginate with better quality than the calcium method.

scholarly journals Optimization of Extraction Temperature on The Quality of Alginate from Seaweed Sargassum muticum

2019 ◽  
Vol 22 (1) ◽  
pp. 164
Author(s):  
Rizqi Wahyu Herdianto ◽  
Amir Husni
Keyword(s):  
Moisture Content ◽  
Sodium Alginate ◽  
Ash Content ◽  
Sargassum Muticum ◽  
Extraction Temperature ◽  
Food Industries ◽  
The Difference ◽  
Effect On Yield ◽  
Alginate Extraction

Seaweed is one of Indonesia’s marine biological resources which has potential to produce alginate which can be used for food and non-food industries. Several studies had been carried out in an effort to improve the quality of alginate extraction. This study aims to determine the effect of extraction temperature on the quality of sodium alginate from Sargassum muticum. This study used variations in extraction temperatures, namely 30; 40; 50; 60 and 70°C. The parameters observed included yield (%), moisture content (%), ash content (%), pH, whiteness degree and functional groups of alginate. The results showed that the difference in extraction<br />temperature of sodium alginate had a significant effect on yield and viscosity, but did not significantly affect water content, ash content, and whiteness degree. Extraction temperature of 60°C produced the best yield<br />and viscosity, 14.90±2.26% and 236.10±36.61 cPs, respectively.

scholarly journals Concentration Optimization Na2CO3 Alginates From Turbinaria sp. As Raw Material Electrolite Polymer For DSSC

2021 ◽  
Vol 3 (1) ◽  
pp. 30-33
Author(s):  
Dinda Liyana ◽  
Nurhadini Nurhadini ◽  
Ristika Oktavia Asriza
Keyword(s):  
Moisture Content ◽  
Polymer Electrolyte ◽  
Brown Seaweed ◽  
Electrical Energy ◽  
Raw Material ◽  
Ftir Analysis ◽  
Optimum Conditions ◽  
Percentage Yield ◽  
Optimum Extraction ◽  
Alginate Extraction

Polymer electrolyte DSSC is one component of the application can convert solar energy into electrical energy. The polymer electrolyte can be synthesized from brown seaweed Turbinaria sp. However, the optimization of alginate extraction has not been widely carried out, so the aim of this study was to determine the optimum conditions for variations in the concentration of Na2CO3 (3%, 5%, 7%) in extracts from Turbinaria sp as raw material for polymer electrolyte synthesis for DSSC. Alginate optimum extraction results known by percentage yield, moisture content and functional groups using FTIR analysis. The optimum conditions for alginate extraction from Turbinaria sp are Na2CO3 5% and a temperature of 60 oC with a yield of 23.81% and a moisture content of 8.1%. FTIR results also indicate the intensity of the strongest mannuronic seen at 822cm-1 wave numbers.

scholarly journals EFFECT OF CHOPPING STEP AND DRYING TECHNIQUE ON THE QUALITY OF ALKALI TREATED COTTONII (ATC)

2013 ◽  
Vol 7 (3) ◽  
pp. 123
Author(s):  
Singgih Wibowo ◽  
Muhamad Darmawan ◽  
Arif Rahman Hakim ◽  
Seruni Marsella
Keyword(s):  
Moisture Content ◽  
Quality Parameters ◽  
Gel Strength ◽  
Sun Drying ◽  
Drying Techniques ◽  
Drying Treatment

A research related to the production of  alkali treated cottonii (ATC) had been carried out in order to study the effect of chopping step and drying techniques on the quality of ATC produced. Four treatments were applied in the experiment, namely was copping before sun drying (treatment A); chopping after sun drying (B); chopping before mechanical drying (C); and chopping after mechanical drying (D). The quality parameters of ATC measured were gel strength, moisture content, viscosity, yield, and whiteness. The results showed that the quality of ATC was significantly affected by chopping step and drying technique, especially in ATC gel strength, viscosity and yield. However, the effect of chopping step and drying technique was insignificant to ATC moisture content and whiteness. Chopping seaweed before drying resulted in higher gel strength of the ATC but lower in yield, while chopping after drying tended to result in lower gel strength but higher viscosity and yield.

scholarly journals Effect of Extraction Methods on Characteristic of SodiumAlginate from Brown Seaweed Sargassum fluitans

2018 ◽  
Vol 20 (3) ◽  
pp. 478 ◽  
Author(s):  
Annisa Ajeng Maharani ◽  
Amir Husni ◽  
Nurfitri Ekantari
Keyword(s):  
Sodium Alginate ◽  
Alginic Acid ◽  
Group Analysis ◽  
Brown Seaweed ◽  
Extraction Methods ◽  
Quality Parameters ◽  
Ash Content ◽  
Primary Metabolite ◽  
Acid Method ◽  
Alginate Extraction

Alginate is a primary metabolite that is needed in food and non food industries. Alginate extraction<br />method of seaweed affect on viscosity and yield of the alginate. This study aimed to determine the effect of<br />extraction methods on characteristic and quality of sodium alginate Sargassum fluitans and the extraction<br />cost needed. This study used two different extraction methods which wereacid alginate method and calcium<br />alginate method. Quality parameters observed include yield, moisture content, ash content, viscosity,<br />pH, whiteness index, and functional group analysis, also extraction cost analysis. The results showed that<br />alginate extraction of S. fluitans by alginic acid method produced better sodium alginate quality than using<br />calcium alginate method, but the cost higher. Sodium alginate produced by alginic acid method had high<br />viscosity (127.17±11.50 cps) with yield 9.95±0.31%. The moisture and ash content of the product was low or<br />9.35±0.31% and 21.88±0.41%, respectively.<br /><br />

Effects of Compressing Pressure, Screen Size and Moisture Content on Pellets Density of Water Hyacinth

2012 ◽  
Vol 518-523 ◽  
pp. 63-67
Author(s):  
Xia Zhang ◽  
Zong Shou Cai ◽  
Jian Wen Ruan
Keyword(s):  
Invasive Species ◽  
Moisture Content ◽  
Water Hyacinth ◽  
Local Source ◽  
Hammer Mill ◽  
Screen Size ◽  
High Quality ◽  
The World ◽  
Density Of Water

Water hyacinth (WH) has been one the most troublesome caused by invasive species in the warm regions over the world. However, it has the potential to be compressed into biomass pellets as a local source of substitute and renewable solid fuel in the future. The method and preparation of comperssing WH pellets were investigated in this study using a compressing apparatus in the lab. WH samples were ground by a hammer mill with three different screen sizes (2.0, 3.0and 4.0mm), compressed with five levels of compressing forces (1000, 2000, 3000, 4000 and 5000N) at three levels of moisture content (10%, 15% and 20% wb). The density of each sample pellets was calculated and recorded. The effects of compressing pressure, screen size and moisture content on pellets density were analyzed depending on the statistical analysis of variance (ANOVA). It was found in this study that all the three factors except screen size affected WH pellets density significantly, high quality of WH pellets in terms of high pellets density can be obtained under a compressing pressure about 80MPa and at a moisture contnet about 15% (wb).

scholarly journals CHARACTERISTICS OF DEMINERALIZED GELATIN FROM LIZARDFISH (Saurida spp.) SCALES USING NaOH-NaCl SOLUTION

2017 ◽  
Vol 6 (2) ◽  
pp. 132-142
Author(s):  
Dyah H Wardhani ◽  
Esti Rahmawati ◽  
Ghozi Tsany Arifin ◽  
Heri Cahyono
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Opposite Effect ◽  
Gel Strength ◽  
Ash Content ◽  
Nacl Solution ◽  
High Quality ◽  
Nacl Concentration ◽  
Positive Effect

Demineralization is required to reduce the ash content of gelatin. Previous studies have confirmed the high quality of gelatin was produced after demineralized using combination of NaCl and aqueous NaOH. The purpose of this study was to determine the effect of NaCl on the properties of gelatin from Lizardfish (Saurida spp.) scales. The cleaned scales was demineralized using a mixture of NaOH 0.5% and NaCl (0- 0.8%), at various temperatures (45, 65, 86oC) and time (30, 60, 90 and 150 minutes). The obtained samples was determined by ash content, pH, the lightness and moisture content. Addition of NaCl reduced the ash, pH and moisture content but increased the whiteness. Gelatin physical properties increased inline with NaCl concentration. Extended demineralized period gave a positive effect on ash, pH and moisture content but opposite effect was observed in the lightness and physical properties. Extended demineralization periods in high temperature reduced gelatin quality. The highest gel strength was found at demineralization for 150 min at 65oC using a combination of NaOH 0.5% and NaCl 0.8%. At this condition, the gelatin has 10%, 1,7%, 248 bloom, and 7,1 cP of moisture content, ash, gel strength and viscosity, respectively, which fulfil SNI 06.3735.1995.

scholarly journals The Quality of Alkali Treated Cottonii (ATC) Made from Eucheuma cottonii Collected from Different Regions In Indonesia

2013 ◽  
Vol 8 (3) ◽  
pp. 117 ◽  
Author(s):  
Muhamad Darmawan ◽  
Bagus Sediadi Bandol Utomo ◽  
Raekal Amral Yuda Mulia
Keyword(s):  
Melting Point ◽  
Moisture Content ◽  
Raw Materials ◽  
Gel Strength ◽  
Ash Content ◽  
Raw Material ◽  
Sulphate Content ◽  
Eucheuma Cottonii

The presented study has been carried out in order to study the quality of Alkali Treated Cottonii (ATC) made from Eucheuma cottonii which being collected from different regions in Indonesia (Belitung, Nusa Tenggara Barat and Lampung). The quality variables analyzed were the characteristics of raw materials (Clean anhydrous weed and impurities) and the characteristics of ATC produced (moisture content, ash content, acid insoluble ash content, yield, gel strength, sulphate content, gelling -melting point). The analysis was done in 3 replicates and the data were statistically analyzed using SPSS 15 package software. Results indicated that the raw material from Lampung had a better quality than those from Nusa Tenggara Barat and Belitung. In addition, the characteristics of ATC produced from these three raw materials showed that seaweed from Lampung produced better quality ATC than those from Nusa Tenggara Barat and Belitung in terms of their gel strength, sulphate content and yield.

scholarly journals Pathway of sodium alginate synthesis from marine brown algae, Sargassum wightii from Sri Lanka

Discover Food ◽  
2022 ◽  
Vol 2 (1) ◽  
Author(s):  
G. D. T. M. Jayasinghe ◽  
B. K. K. K. Jinadasa ◽  
N. A. G. Sadaruwan
Keyword(s):  
Sodium Alginate ◽  
Extraction Method ◽  
Sodium Carbonate Solution ◽  
Brown Seaweed ◽  
Gel Strength ◽  
Ash Content ◽  
Main Step ◽  
Standard Methods ◽  
Sargassum Wightii ◽  
High Affinity

AbstractAlginates are natural polysaccharides that are extracted from brown seaweed varieties and it is widely used for their rheological properties. The main step in the extraction protocol of sodium alginate is alkaline extraction. Sodium alginate was produced by dipping the seaweed in 1% formaldehyde and 2.5% of sodium carbonate solution and properties were studied following the standard methods. The amount of sodium alginate yield was 31.7% in Sargassum wightii. The moisture content and the ash content were recorded at 16.82% and 5.20%, respectively. The viscosity and the gel strength were noted as 40 vcP, 4.54 × 10–2 kN with 0.1 M CaCl2 and 6.86 × 10–2 kN with 0.2 M CaCl2 respectively. This study of the extraction method and its properties reveal that Sargassum wightii brown seaweed species have a high affinity to extract the alginate.

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