scholarly journals MUTU KARAGINAN DAN KEKUATAAN GEL DARI RUMPUT LAUT MERAH Kappaphycus alvarezii

2017 ◽  
Vol 5 (2) ◽  
pp. 36 ◽  
Author(s):  
Sopina Erjanan ◽  
Verly Dotulong ◽  
Roike Iwan Montolalu
Keyword(s):  
Moisture Content ◽  
Potassium Chloride ◽  
Red Algae ◽  
Potassium Hydroxide ◽  
Kappaphycus Alvarezii ◽  
Gel Strength ◽  
Ash Content ◽  
Cooking Time ◽  
Water Ratio

The study aim to determine the quality and gel strength of carrageenan produced by red algae Kappaphycus alvarezii. The carrageenan was produced using various concentration, cooking time and water ratio that is 0.05, 0.1 and 0.15% potassium hydroxide; 1, 1.15, 1.25, 1.5, 3 and 4.5%, potassium chloride (KCl); cooking time 2h or 3h; and carrageenan and water ratio, 1:20L or 1:30L The results showed that the best treatment produced the highest gel strength (188.53 g/cm2) with 17.7% moisture content and 19.9% ash content. This condition was achived by mixing 0.15% KOH and 1.25% KCl, cooked for 2h with 1:20 carrageenan to water ratio.Keyword: Carageenan, Kappaphycus alvarezii, seaweed. Tujuan dari penelitian ini adalah untuk menentukan mutu akhir karaginan dari rumput laut merah Kappaphycus alvarezii yang dibuat dengan 5 perlakuan berbeda. Perlakuan variasi konsentrasi pelarut KOH dan KCl, lama pemasakan, dan perbandingan air yang berbeda. Proses ekstraksi karaginan menggunakan pelarut KOH dengan konsentrasi 0,05%, 0,1 %, dan 0,15% sedangkan pelarut KCl dengan konsentrasi 1%, 1.15%, 1.25%, 1,5%, 3%, dan 4,5%, lama permasakan 2 dan 3 jam, dan perbandingan air 1:20 L dan 1:30 L. Hasil penelitian menunjukan bahwa perlakuaan F dengan konsentrasi  KOH 0,15 + KCl 1,25 % dan lama pemasakan 2 jam,dan perbandingan karaginan dan air 1: 20 Liter menghasilkan  kekuataan gel 188,53 g/cm2, dengan pH 8.04, kadar air 17.75, dan kadar abu 19,99%.Kata Kunci: Karaginan, Kappaphycus alvarezii, rumput laut.

scholarly journals Physicochemical Characteristics of Carrageenan Based on Different Harvesting Times From Bontang Coastal, East Kalimantan

2019 ◽  
Vol 22 (1) ◽  
pp. 136
Author(s):  
Andi Noor Asikin ◽  
Indrati Kusumaningrum
Keyword(s):  
Moisture Content ◽  
Kappaphycus Alvarezii ◽  
Physicochemical Characteristics ◽  
Gel Strength ◽  
Ash Content ◽  
Harvesting Time ◽  
East Kalimantan

Proper harvesting time determines the physicochemical characteristics of carrageenan. The purpose of this study was to determine the physicochemical characteristics of carrageenan extracted from Kappaphycus alvarezii at various different harvesting times from the Bontang Coastal, East Kalimantan. This study consisted of 7 treatments at the harvesting times, which were harvested at 30; 35; 40; 45; 50; 55 and 60 days. The parameters observed included yield, moisture content, ash content, viscosity and gel strength. The results showed the highest yield at the age of 50 days of harvest (46.91%), the highest viscosity at the age of<br />55 days harvest (50.25 cP), and the highest gel strength at 40 days of harvesting at 60.14 g/cm2.

scholarly journals PENGARUH PENAMBAHAN BUAH NAGA MERAH (Hylocereus polyrhizus) TERHADAP MUTU PERMEN KARAMEL SUSU

2019 ◽  
Vol 5 (1) ◽  
pp. 85
Author(s):  
Marlina Marlina ◽  
Mohammad Wijaya ◽  
Kadirman Kadirman
Keyword(s):  
Moisture Content ◽  
Sugar Content ◽  
Research Data ◽  
Ash Content ◽  
Cooking Time ◽  
Fruit Pulp ◽  
Randomized Design ◽  
Dragon Fruit ◽  
Completely Randomized Design ◽  
Chemical Testing

This study aims to determine the effect of adding red dragon fruit to the chemical and hedonic content of caramel milk. This study used a method of adding 20%, 30%, and 40% red dragon fruit pulp for caramel milk candy with a cooking time of 2 hours at 80˚C. This research is a quantitative study (experiment) using a completely randomized design (CRD) with 4 treatments, each control, 20%, 30%, and 40% with 3 replications. The research data was obtained from the results of chemical testing (moisture content, ash content, fiber, reduction sugar, and antioxidants) and organoleptic (color, taste, aroma, and texture), data were analyzed using analysis of variance (ANOVA) and continued with DRMT test (Duncan ) at a 95% confidence level. The results showed that the addition of red dragon fruit pulp had an effect on caramel milk candy, the best research on the manufacture of caramel milk was the addition of 40% red dragon fruit pulp with characteristics of 3.54% moisture content, 1.98% ash content, 1.48% fiber content, decreased sugar content 2.18%, antioxidant content 53.77%, favorite color value 4.10, favorite aroma value 3.52, flavor 3.83, and favorite texture value 3.23

Kajian Ekstraksi Karagenan Berdasarkan Variasi Rasio Rumput Laut (Eucheuma cottonii) dengan Nira Siwalan (Borrasus flaberina L.) dan Lama Perendaman serta Aplikasinya pada Bubuk Jelly Drink Nanas (Ananas comosus)

2020 ◽  
Vol 3 (2) ◽  
pp. 129
Author(s):  
Alfajri Ula Ashfarina ◽  
Noor Harini ◽  
Listiari Hendraningsih
Keyword(s):  
Moisture Content ◽  
Block Design ◽  
Gel Strength ◽  
Ash Content ◽  
Extraction Time ◽  
Gelling Agent ◽  
Ananas Comosus ◽  
Second Stage ◽  
Randomized Block Design ◽  
Stage 1

The extraction of carrageenan by Eucheumma cottonii using siwalan neera as a solvent which contains pottasium 236mg per 100g and others mineral. Carragenan extract applied on pineapple jelly drink powder as a gelling agent by different concentration. This research was conducted into two stages by 3 times repitition. First, carrageenan extraction using a Factorial Randomized Block Design (RBD) consisting of 2 factors. The first factor is the ratio of seaweed with neera siwalan (S) (1:10, 1:20, 1:30) and second factor is extraction time (T) (60 minutes, 90 minutes, and 120 minutes). Extract of carrageenan was analyzed on yield, viscosity, gel strength, moisture content and ash content. The second stage is application of carrageenan extract on pineapple jelly drink powder (K) with carrageenan concentration differently (K) of 0.5%, 1%, 1.5%, 2%, 2.5%. The parameters analyzed in the second stage are viscosity, gel strength, syneresis, and organoleptic (taste, suction power, and mouthfeel). The results shows that there was a significant effect on the Siwalan neera ratio on the carrageenan produced on yield, viscosity, gel strength, water content. The best carrageenan at stage 1 was produced from the treatment of seaweed and neera siwalan ratio 1:30 with extraction time of 120 minutes (S3T3), namely yield 82.87%, moisture content 15.3%, ash content 15.97%, gel strength 102.95 g/cm2 and 5,3 cP viscosity. The addition of the best extract carrageenan to pineapple jelly drink and it was obtained the best result namely the addition of carrageenan 1% (K2) with viscosity of 2.3 cP, gel strength 8.6615 g/cm2, sineresis (24 hours) 0.9183%, sineresis (48 Hours) 3.5430%, and sineresis (72 Hours) 5.1905%, taste 3.3 (enough in tasting), suction power 3.75 (easy to suck) and mouthfeel 2.9 (enough to feel the gel).

scholarly journals Analisis Parameter Fisika dan Kimia Karaginan Kappaphycus alvarezii Doty 1985 (Florideophyceae : Solieriaceae) Dengan Variasi Ekstraksi dari Perairan Bluto

2019 ◽  
Vol 8 (4) ◽  
pp. 409-415
Author(s):  
Nursiana Suci Wulandari ◽  
Rini Pramesti ◽  
AB. Susanto
Keyword(s):  
Water Content ◽  
Alkaline Solution ◽  
Kappaphycus Alvarezii ◽  
Treatment Method ◽  
Extraction Methods ◽  
Gel Strength ◽  
Ash Content ◽  
Pre Treatment ◽  
Kappa Carrageenan

Kappaphycus alvarezii merupakan rumput laut merah penghasil karaginan yang dimanfaatkan dalam berbagai industri dan diperoleh melalui ekstraksi. Ekstraksi umumnya menggunakan larutan alkali sebagai pelarut dalam proses pemanasan maupun perendaman. Ekstraksi tanpa larutan alkali masih jarang dilakukan. Ekstraksi cara alkali, non-alkali maupun pre-treatment alkali mempengaruhi kualitas karaginan sehingga penelitian ini perlu dilakukan. Tujuan penelitian untuk memperoleh karaginan kualitas terbaik dari 3 metode ekstraksi. Parameter yang diambil meliputi rendemen, kadar air, kadar abu, kekuatan gel, viskositas dan analisis FTIR. Karaginan dihasilkan melalui ekstraksi secara alkali dengan pemanasan KOH, pre-treatment alkali dengan perendaman KOH sebelum pemanasan dan ekstraksi native pemanasan dengan air suling. Hasil penelitian didapatkan nilai rendemen terbaik dengan metode alkali (36,68±2,33%). Kadar air terbaik metode pre-treatment (3,91±0,84%). Kadar abu terbaik metode alkali (32,7±2,42%). Kekuatan gel terbaik dengan metode alkali (519±29,01g/cm2). Viskositas terbaik metode native (70,43±0,74 cPs). Hasil FTIR menunjukkan sampel yang dihasilkan jenis kappa karaginan. Kappaphycus alvarezii produces carrageenan which is widely used for industrial and obtained through extraction. Generally the extraction is using an alkaline solution as a solvent of heating or soaking process. Extraction without alkaline solution is infrequently performed. Different extraction methods affect the quality of the carrageenan, therefore the research has to be done. The purpose of this research is to obtain the best quality carrageenan from 3 different extraction methods. The parameters performed yield, water content, ash content, gel strength, viscosity and FTIR analysis. Carrageenan are produced through alkaline extraction treatment with KOH, pre-treatment alkaline with KOH and native extraction with distilled water. The results showed the best yield was alkaline method (36.68±2.33%), the best water content was pre-treatment method (3.91±0.84%), the best ash content was the alkaline method (32.7±2.42%), the best gel strength was the alkaline method (519 ± 29.01g/cm2), the best viscosity was the native method (70.43±0.74 cPs). Analysis FTIR showed the samples produced kappa carrageenan.

scholarly journals Utilization of soybean dregs for solid fuel production through hydrothermal carbonization

2020 ◽  
pp. 292-292
Author(s):  
Nugroho Pambudi ◽  
Panji Ardiyansyah ◽  
Riina Syivarulli ◽  
Muhammad Biddinika ◽  
Mochamad Syamsiro ◽  
...  
Keyword(s):  
Moisture Content ◽  
Carbon Content ◽  
Saturation Pressure ◽  
Calorific Value ◽  
Hydrothermal Carbonization ◽  
Ash Content ◽  
Holding Time ◽  
Soy Sauce ◽  
Volatile Content ◽  
Water Ratio

Hydrothermal carbonization (HTC) is a thermochemical process used in converting biomass into a coal-like substance known as hydrochar. This is usually carried out at high temperature with water below the saturation pressure for a certain period known as holding time. The biomass used was soybean dregs, which is the residue obtained from processing soy sauce with low economic value. The aim of this study therefore was to determine the calorific value of the hydrochar produced from soybean dregs at hydrothermal carbonization temperatures of 160?C, 190?C, and 220?C and at holding times of 30 and 60 minutes, also at a temperature of 190?C with the biomass and water ratio at 1:4 and 1:5. The results showed that the highest calorific value was produced a temperature of 220?C and a holding time of 60 minutes, which was 3,866 Kcal/Kg, the highest carbon content was 26.49%, the lowest moisture content was at 1.77%, the lowest volatile content was at 62.98%, while the lowest ash content was8.64%. Considering biomass to water ratio with the holding time, the highest calorific value was at 3,546 Kcal/Kg, the highest carbon content was 20.32%, the lowest moisture content at 1.71%, the lowest volatile content was 68.58%, while the lowest ash content was at 8.37%. The highest calorific value of the hydrochar produced was similar to the calorific value standard of lignite coal which is around 3,511-4,611 Kcal/Kg according to the American Standard Testing and Mineral (ASTM).

scholarly journals Characteristics of Semi-Refined Carrageenan From Kappaphycus Seaweed Farmed in Coastal Waters of Northern Java, Indonesia

2021 ◽  
Vol 34 (3) ◽  
Author(s):  
HARYA BIMASUCI ◽  
RATIH IDA ADHARINI ◽  
DINI WAHYU KARTIKA SARI
Keyword(s):  
Environmental Factors ◽  
Kappaphycus Alvarezii ◽  
Primary Source ◽  
Environmental Parameters ◽  
Gel Strength ◽  
Ash Content ◽  
Gelling Agent ◽  
Sulphate Content ◽  
Water Ph ◽  
Kappa Carrageenan

Kappaphycus seaweed is the primary source of carrageenan, a polysaccharide widely utilised as a thickening and gelling agent in many commercial products. Unlike pure refined carrageenans, semi-refined carrageenans (SRC) are considered more cost-efficient and easier to produce. This study evaluates the quality of SRC extracted from Kappaphycus alvarezii (Doty) Doty ex Silva 1996, and Kappaphycus striatus (F. Schmitz) Doty ex P.C. Silva 1996, seaweeds farmed in the northern part of Java Island, particularly in Serang, Seribu Islands, and Karimunjawa Islands. Using 8 % KOH as a solvent, SRC was extracted from clean dried seaweed. Physical and chemical characteristics of the SRC were measured by assessing the percentage SRC yield, ash content, moisture, sulphate content, viscosity (cp) and gel strength (g.cm-2). Pearson’s correlation analysis was performed to investigate the relationship between SRC quality and environmental factors. Fourier transform infrared spectroscopy (FTIR) analysis showed that all samples had kappa-carrageenan from peak absorbance of 1218–1224 cm-1 indicating ester sulphate bonds, 924–925 cm-1 indicating 3,6–anhydrogalactose, and 843–844 cm-1 suggesting galactose–4–sulphate groups. Furthermore, ash content, moisture, and viscosity of SRC passed the FAO standard, while the sulphate content was below the threshold limit. Several environmental factors had a significant correlation with SRC quality, such as water pH positively correlated with gel strength, salinity level positively correlated with gel strength, and depth positively correlated with ash content. This study concluded that SRC produced from the sampling sites had varying qualities and may be affected by environmental parameters in their cultivation site.

scholarly journals Pengaruh Praperlakuan Alkali dan Asam terhadap Karakteristik Mutu Bakto Agar dari Rumput Laut Gelidium sp

2020 ◽  
Vol 15 (1) ◽  
pp. 33
Author(s):  
Muhamad Darmawan ◽  
Joko Santoso ◽  
Dina Fransiska ◽  
Marsella Marsella
Keyword(s):  
Melting Point ◽  
Moisture Content ◽  
Gel Strength ◽  
Ash Content ◽  
Plate Count ◽  
Alkali Pretreatment ◽  
Acid Pretreatment ◽  
Sulphate Content ◽  
Total Plate Count ◽  
Bacto Agar

Ekstraksi bakto agar dari rumput laut merah Gelidium sp. asal Pameungpeuk, Jawa Barat dengan praperlakuan alkali dan asam telah diteliti. Pada praperlakuan alkali digunakan NaOH dengan variasi konsentrasi 4, 5, dan 6%. Asam yang digunakan yaitu CH3COOH dengan variasi konsentrasi 0,5% dan 1,0%. Parameter mutu yang diamati meliputi kadar air, kadar abu, kadar abu tak larut asam, kadar sulfat, gugus fungsi, rendemen agar, kekuatan gel, viskositas, titik leleh dan titik jendal, sineresis, dan angka lempeng total. Bakto agar terbaik diperoleh dari praperlakuan dengan konsentrasi NaOH 4% dan CH3COOH 0,5% yang telah memenuhi beberapa persyaratan mutu bakto agar komersial untuk parameter kekuatan gel, kadar air, kadar abu, dan kadar abu tak larut asam. Karakteristik mutu dari praperlakuan tersebut adalah kadar air 13,69±1,02%, kadar abu 4,24±1,28%, kadar abu tak larut asam 0,54±0,25%,  kadar sulfat 1,55±0,36%, rendemen 9,19±2,21%, kekuatan gel 1464,98±109,09 g/cm2, viskositas 42,75±24,40%, sineresis 2,76±0,12%, titik jendal 20,50±2,12  °C, dan titik leleh 95,25±1,06 °C. Praperlakuan dengan konsentrasi tersebut juga memiliki nilai Angka Lempeng Total  (ALT) yang sama dengan bakto agar komersial. AbstractBacto agar extraction from red seaweed Gelidium sp. from Pameungpeuk, West Java with alkali and acid pretreatment had been conducted. NaOH with concentration of 4, 5, and 6% was used for alkali pretreatment while CH3COOH at concentrations of 0.5% and 1.0% (v/v) was used for acid pretreatment. The quality parameters investigated were moisture content, ash content, acid insoluble ash, sulphate content, functional groups, yield, gel strength, viscosity, melting point, gelling point, syneresis, and total plate count. The best quality of bacto agar was obtained by using 4% alkali pretreatment and 0.5% CH3COOH. This pretreatment has fulfilled the specification of commercial bacto agar for moisture, ash, acid inslouble ash content, and gel strength parameter. The properties of bacto agar from this pretreatment were moisture content 13.69±1.02%, ash content 4.24±1.28%, acid insoluble ash content 0.54±0.25%, sulphate content 1.55±0.36%, yield 9.19±2.21%, gel strength 1464.98±109.09 g/cm2, syneresis 2.76±0.12%, gelling point 20.50±2.12 °C, and melting point 95.25±1.06 °C. This pretreatment also gave the same result as the commercial bacto agar for the total plate count. 

scholarly journals CARRAGEENAN AS BINDER IN THE FRUIT LEATHER PRODUCTION

2015 ◽  
Vol 2 (1) ◽  
pp. 63 ◽  
Author(s):  
Dina Fransiska ◽  
Siti Nurbaity Kartika Apriani ◽  
M Murdinah ◽  
Susiana Melanie
Keyword(s):  
Moisture Content ◽  
Production Process ◽  
Water Activity ◽  
High Strength ◽  
Gel Strength ◽  
Ash Content ◽  
Mango Fruit ◽  
Elastic Sheet ◽  
Hedonic Quality ◽  
Eucheuma Cottonii

Research on the production of mango fruit leather with the addition of carrageenan as the binder has been conducted. The fruit leather production process needs ripe and fresh mango. Carrageenan which was used as the binder was produced from the extraction of seaweed Eucheuma cottonii. The concentrations of carrageenan that used were 0%, 0,2%, 0,4% and 0,6% by using gelatin as a comparison. The fruit leather ingredients are puree mango, sugar, sorbitol, and carrageenan. The analysis was conducted to the carrageenan as the binder and the fruit leather as a product. The parameters which were analyzed were moisture content, ash content, acid insoluble ash content and gel strength. The mango fruit leather was analized in terms of moisture content, water activity (Aw), organoleptic hedonic test and hedonic quality. The result showed that carrageenan had a fairly high strength gel 1322 g /cm2. Based on the result of the organoleptic test, the panelist prefer fruit leather made from puree mango with formula of puree mango : carrageenan : sorbitol is 90% : 0.2% : 9.8%. Mango fruit leather was designed in the form of thin elastic sheet with moisture content 24.39% dan Aw 0,62. Keywords: Carrageenan, fruit leather, mango, binder 

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.

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