scholarly journals Evaluation and Characterization of Alginate Extracted from Brown Seaweed Collected in the Red Sea

2021 ◽  
Vol 11 (14) ◽  
pp. 6290
Author(s):  
Sarah H. Rashedy ◽  
Mohamed S. M. Abd El Hafez ◽  
Mahmoud A. Dar ◽  
João Cotas ◽  
Leonel Pereira
Keyword(s):  
Moisture Content ◽  
Red Sea ◽  
Potential Application ◽  
Food Industry ◽  
Brown Seaweed ◽  
Ash Content ◽  
Phytochemical Analysis ◽  
Lipid Concentration ◽  
Brown Seaweeds

Alginates are one of the most important compounds of brown seaweeds. These compounds are employed in the food area, because of their important rheological properties, such as viscosity, gelling, and stabilizing features and as dietary fiber source. In this study, five species of dominant brown seaweeds were collected in the Red Sea (Padina boergesenii, Turbinaria triquetra, Hormophysa cuneiformis, Dictyota ciliolata, and Sargassum aquifolium) so as to characterize the alginate yield and its properties. The analysis demonstrated differences in the alginate yield among the seaweeds. The highest yield of alginate was recorded in the species T. triquetra (22.2 ± 0.56% DW), while the lowest content was observed in H. cuneiformis (13.3 ± 0.52% DW). The viscosity from the alginates varied greatly between the species, whereas the pH varied slightly. The alginate exhibited a moisture content between 6.4 and 13.1%, the ash content ranged between 12.3 and 20% DW, the protein reached values from 0.57 to 1.47% DW, and the lipid concentration varied from 0.3 to 3.5% DW. Thus, the phytochemical analysis demonstrated that the extracted alginates can be safely applied in the food industry. Furthermore, the alginate yield reveals the potential application of these seaweeds as a nutraceutical raw source, which can be exploited by the food industry.

scholarly journals Na-Alginate Utilization of Brown Algae (Sargassum sp.) as A Halal Edible Film Basic Materials

2019 ◽  
Vol 1 (1) ◽  
pp. 9-13
Author(s):  
Nisa Nur Khasanah ◽  
Vina Amalia ◽  
Baiq Vera El Viera ◽  
Asti Sawitri
Keyword(s):  
Tensile Strength ◽  
Moisture Content ◽  
Brown Algae ◽  
Research Method ◽  
Edible Films ◽  
Ash Content ◽  
Edible Film ◽  
Isolation And Characterization ◽  
Two Stages

Edible films made of Na-alginate from brown algae have great potential to be developed as brown algae have a fairly high abundance in Indonesia but have not been widely used. Therefore, in this study conducted by making edible films made from Na-alginate modified by the addition of hydrocolloids carrageenan and glycerol plasticizier. The addition of carrageenan biopolymers is the property of the produced Edible film. The use of glycerol as a plasticizer aims to improve the properties of elasticity Edible films. This research method consists of two stages. First, the isolation and characterization of Na-alginate. Both the preparation and characterization of making edible films. Na-alginate characterization results in yield of 25.68%, 10.84% moisture content, ash content of 23.79%. The carrageenan on the formula Edible films affect the characterization of the resulting films. The value of water absorption from 333.13% to 335.45% and the elongation of 26.26% to 33.34%, and the declining value of tensile strength of 8.93 MPa to 4.17 MPa and young's modulus values of 0.34 MPa to 0.22 MPa with the addition of carrageenan on an Edible film formula.

scholarly journals Biosorpsi Ion Logam Tembaga (Cu2+) Pada Biosorben Rumput Laut Coklat (Padina australis)

2018 ◽  
Vol 6 (1) ◽  
pp. 26-37
Author(s):  
Catherina M. Bijang ◽  
Jolantje Latupeirissa ◽  
Marike Ratuhanrasa
Keyword(s):  
Moisture Content ◽  
Metal Ions ◽  
Atomic Absorption ◽  
Contact Time ◽  
Brown Seaweed ◽  
Ash Content ◽  
Atomic Absorption Spectrophotometer ◽  
Batch Method ◽  
Optimum Ph ◽  
Determine Moisture Content

The research on the biosorption of Cu2+ metal ions in brown seaweed biosorbent (Padina australis) has been done. This study aims to determine moisture content, ash content, biomass content, pH and optimum contact time of Cu2+  metal ions absorption pH and optimum contact time of Cu2+  metal ions absorption. The method used is batch method. The adsorption result of Cu2+ metal ions was analyzed  by  using  atomic  absorption  spectrophotometer  (AAS).  The  results showed that the optimum pH was 7 with 99.8308 % absorption ability of biosorbent and the optimum contact time was 5 hours with 99.5570 % biosorbent absorbency.

scholarly journals Purification and Characterization of Fucoidan from the Brown Seaweed Sargassum binderi Sonder

2016 ◽  
Vol 10 (2) ◽  
pp. 79 ◽  
Author(s):  
Ellya Sinurat ◽  
Rosmawaty Peranginangin ◽  
Endang Saepudin
Keyword(s):  
Room Temperature ◽  
Brown Seaweed ◽  
Total Sugar ◽  
Raw Material ◽  
Brown Seaweeds ◽  
Monomer Content ◽  
Sargassum Binderi ◽  
Total Sulfate

The brown seaweed Sargassumsp. is well known as a source of fucoidan. Brown seaweeds found in Indonesia seas are dominated by Sargassum sp.The objectives of this research was to purify and characterize fucoidan from S. binderi Sonder. The fresh raw material was defatted by macerated in methanol:chloroform:water (4:2:1), filtered, rinsed with acetone and then air-dried in room temperature. The defatted dried seaweed was extracted with 0.01M HCl pH 4 at room temperature. Purification has been conducted using anion exchanger. The quality of fucoidan sample was determined for total sugar, functional group using FTIR, monomer content, total ash, and total sulfate in the ester form. The result shows that pure fucoidan contains fucose as the primary sugar component, and otherminor sugars (galactose, glucose, mannose and xylose). Chemical composition of crude fucoidan consisted of 74.25% fucose; 0.28% uronate acid; 10.29% sulfate and 5.5% protein. Purification using DEAE Sephadex A-25 gave 4 fraction pools yielding total sugar (%) of F1 (17.59); F2 (18.92); F3 (13.72); F4 (49.76), respectively. The components that build the fucoidan of S. binderi Sonder were estimated derived to be from fucoidan oligomers including (1,4)-L-FucS-Gal and D-(1,4)-Gal-GalS. 

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.

A revised list of seaweeds from the Red Sea (1756–2020)

2021 ◽  
Vol 68 (3) ◽  
pp. 175-247
Author(s):  
Rachel Einav ◽  
Michael D. Guiry ◽  
Álvaro Israel
Keyword(s):  
Red Sea ◽  
Marine Algae ◽  
Brown Seaweed ◽  
Valid Species ◽  
Brown Seaweeds ◽  
Red Seaweeds ◽  
Local Monitoring ◽  
Taxonomic Studies

Abstract A taxonomic list of macro marine algae (seaweeds) described in the literature for the Red Sea during the years 1756–2020 is presented. The list was prepared using existing published studies, local monitoring reports, as well as “grey” or unpublished lists of seaweeds for the area. Altogether, we examined more than 300 publications and compiled more than 900 taxonomic names, of which 576 correspond to valid species, whilst 355 names were considered synonyms for these species. The phylum Chlorophyta (green seaweeds) was represented by 37 currently accepted genera and 133 species (including 74 species synonyms). The phylum Ochrophyta (Phaeophyceae only; brown seaweeds) was represented by 52 genera, 157 species and 99 synonyms; and the phylum Rhodophyta (red seaweeds) by 130 genera, 286 species and 182 synonyms. The brown seaweed Sargassum appears to be a particularly biodiverse genus in the area represented by 58 species and 26 synonyms. Our study shows the inconsistency and lack of long-term taxonomic studies and recent molecular investigations of seaweeds from nearly the whole Red Sea.

scholarly journals Chemistry and Physic Characterization of Milkfish (Chanos chanos) Gelatin from Tarakan, North Borneo, Indonesia

2020 ◽  
Vol 153 ◽  
pp. 01012
Author(s):  
Tri Paus Hasiholan Hutapea ◽  
Rukisah ◽  
Muliyadi ◽  
Kartika A. Madurani ◽  
Suprapto ◽  
...  
Keyword(s):  
Moisture Content ◽  
Room Temperature ◽  
Extraction Process ◽  
Ash Content ◽  
Neutral Condition ◽  
Chanos Chanos ◽  
Demineralized Water ◽  
North Borneo ◽  
Neutral Conditions

Gelatin of milkfish (Chanos chanos) from Tarakan, North Borneo, Indonesia has been extracted successfully. The gelatin was extracted from the milkfish bone. In prior to extracting, the bone was cleaned with demineralized water and then dried at room temperature. The extraction process was done in several procedures. The first procedure has immersed the bone in 0.1 M NaOH for 48 hours. After that, it was washed until it reached neutral conditions and continued with immersing it in 0.1 M HCl for 72 hours and then washed it to get the neutral condition. The next procedure is the extraction process. It was using water solvents with a ratio of milkfish bone and water is 1: 3. The extraction process was carried out at 55ºC for 4 hours. The obtained gelatin was characterized. The results showed that moisture content 6.39%; ash content 1.92%; pH 6.1; viscosity 5.39 cP; and color 75 PtCo. This result was proved that the gelatin extraction successful.

Fuel Briquettes from Sisal Waste in Thailand

2017 ◽  
Vol 866 ◽  
pp. 168-171
Author(s):  
Udomdeja Polyium ◽  
Amornrat Pigoolthong
Keyword(s):  
Moisture Content ◽  
Chemical Properties ◽  
Calorific Value ◽  
Volatile Matter ◽  
Ash Content ◽  
Physical And Chemical Properties ◽  
Fixed Carbon ◽  
Physical And Chemical ◽  
And Chemical Properties

The research aims to develop fuel briquettes from sisal waste material mixed with bagasse. Sisal wastes were collected from Hub Kapong Royal Project Phetchaburi Province Thailand. These material were mixed according to the ratios of 90:10, 80:20, 70:30, 60:40 and 50:50 respectively. Characterization of physical and chemical properties of fuel briquettes were determined by percentage moisture content, percentage ash content, percentage volatile matter, percentage fixed carbon, and calorific value with the standard number ASTM 3173, ASTM D 3175, ASTM D 3174, ASTM D 3177 and ASTM D 3286 respectively. The results show that percentage moisture content values of 9.98 - 18.14, percentage volatile matter values of 42.59 - 68.04, percentage ash content values of 16.05 -25.41, percentage fixed carbon values of 5.93 - 13.86 and calorific values of 1,820.52 - 2,485.19 kcal/kg. Fuel briquettes to be used as a fuel substitute for firewood and charcoal.

scholarly journals POTENSI TEPUNG KENTANG HITAM (Coleus tuberosus) SEBAGAI PENSUBSTITUSI TERIGU PADA PEMBUATAN CAKE

Pro Food ◽  
2018 ◽  
Vol 4 (2) ◽  
pp. 391
Author(s):  
Siska Cicilia ◽  
Eko Basuki ◽  
Agustono Prarudiyanto ◽  
Ahmad Alamsyah ◽  
Dody Handito
Keyword(s):  
Moisture Content ◽  
Wheat Flour ◽  
Food Industry ◽  
Negative Impact ◽  
Ash Content ◽  
Content Increase ◽  
Potato Flour ◽  
High Demand ◽  
Protein Levels

ABSTRACT   Wheat flour is one type of flour that was often used for making various types of foods and dishes such as noodles, bread, biscuits, cakes, cookies, and porridge. Availability of wheat flour supplied from imports. The high demand for wheat flour because of the increasing needs of the food industry. Dependence on wheat flour can have a negative impact on the country's economy. One alternative wheat substitution is tubers such as black potatoes. The purpose of this study was to figure the best formulation in making cakes from wheat flour and black potato flour. The results showed that the more addition of black potato flour caused a decrease in moisture content, increase in ash content and protein levels and a decrease in the level of preference of panelists. Adding potato flour to 10% produces a cake that preferred by panelists.   Keywords: cake, Coleus tuberosus, wheat substitution   ABSTRAK   Tepung terigu merupakan salah satu jenis tepung yang sering digunakan dalam membuat berbagai jenis makanan dan masakan seperti mie, roti, biskuit, cake, cookies, dan bubur.  Ketersediaan  tepung terigu disuplai dari impor. Tingginya permintaan tepung terigu karena kebutuhan industri makanan yang terus meningkat. Ketergantungan terhadap tepung terigu bisa berdampak buruk terhadap perekenomian negara. Salah satu alternatif pengganti terigu adalah tepung umbbi-umbian seperti kentang hitam. Tujuan penelitian ini adalah menentukan formulasi terbaik dalam pembuatan cake dari tepung terigu dan tepung kentang hitam. Hasil penelitian menunjukkan semakin banyak penambahan tepung kentang hitam menyebabkan penuruan kadar air, penngkatan kadar abu dan kadar protein serta penurunan tingkat kesukaan panelis. Penambahan tepung kentang hingga 10% menghasilkan cake yang disukai panelis.     Kata Kunci : cake, kentang hitam, substitusi terigu

scholarly journals ANALISIS KARAKTERISTIK KANDUNGAN KOPI BENING (CLEAR COFFEE) KABUPATEN BANYUWANGI

2020 ◽  
Vol 7 (2) ◽  
pp. 65
Author(s):  
Megandhi Gusti Wardhana ◽  
M. Sabiq Irwan
Keyword(s):  
Moisture Content ◽  
Temperature Treatment ◽  
Ash Content ◽  
Preliminary Treatment ◽  
Distillation Method ◽  
Noticeable Effect ◽  
Water Distillation ◽  
Cloth Filter ◽  
Roasting Temperature

This research aims to find out the effect of preliminary treatment (roasted light roasting 190°C, medium roasting 195°C and dark roasting 200°C) and distillation method (water distillation and coffee extract) on the characteristics of clear coffee and provide benefits to know the characteristics of quality contained in the content of clear coffee. The method used is a distillation method that is carried out for 1 hour to be able to produce a clear copy that was previously done extras with the grinder Latina600N, Cloth Filter and Moka Pot and these results will be tested proximate and organoleptic test and then calculated variance analysis. The characterization of clear coffee in the testing of pH levels, protein content, moisture content, ash content, fat content, and caffeine content resulted that the dark roasting treatment (195°C-200°C) had the highest percentage value with low caffeine levels and roasting temperature treatment of 195°C-200°C had the highest favored level by using the commonly used Latina 600N grinder cafe-café coffee in general, and based on the results of roasting temperature variant 195°C-200°C has no noticeable effect with other temperature treatment as well as grinders used.

scholarly journals QUALITATIVE & QUANTITATIVE PHYTOCHEMICAL SCREENING AND PROXIMATE COMPOSITION OF BOMBAX BUONOPOZENSE (RED SILK COTTON TREE) STEM-BACK

2016 ◽  
Vol 3 (3) ◽  
pp. 288-292
Author(s):  
B. E. Edem ◽  
M. E. Khan ◽  
N. U. Ibok
Keyword(s):  
Moisture Content ◽  
Proximate Composition ◽  
Proximate Analysis ◽  
Ash Content ◽  
Phytochemical Analysis ◽  
Phytochemical Screening ◽  
Crude Sample ◽  
Tree Stem

Qualitative & quantitative phytochemical screening and proximate composition of Bombax buonopozense stem was investigated. Nine phytochemicals viz: - alkaloid, carbohydrate, phenols, flavonoids, saponins, tannins, protein, terpenoids, and oxalates were observed. Steroids and glycosides were below detectable limits. Quantitative phytochemical analysis indicated that alkaloid, flavonoid, phenols, tannins and saponins had values of 0.68 g, 0.09 g, 2.35 g, 1.41 g and 1.15 g respectively. The proximate analysis gave high percentage moisture content (55.30%). Carbohydrate and protein were of low values (1.04 % and 6.0% respectively). Ash content was found to be 15.30%, fiber (16.80%)All analyses wereper100g of crude sample.

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