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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Journal of Marine Research Jurnal Kelautan Tropis JFMR (Journal of Fisheries and Marine Research) Journal of Tropical Marine Science
Gunawan Widi Santosa
Program Studi Ilmu Kelautan Jurusan Ilmu Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, Universitas Diponegoro. Jl. Prof. Soedharto SH, Tembalang, Semarang. 50275.Telp. (024)7474698, 085640565065, Email Sriyulinawulandari@yahoo.com
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Engineering Environmental Science

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PENGARUH PERENDAMAN AIR KAPUR TERHADAP KADAR SULFAT DAN KEKUATAN GEL KARAGINAN RUMPUT LAUT Kappaphycus alvarezii Haris, Radityo; Santosa, Gunawan Widi; Ridlo, Ali
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.896 KB) | DOI: 10.14710/jmr.v2i2.2344

Abstract

Gel formation is the result of crosslinking between adjacent helical chains, with sulphate groups facing to the outside. The theoretical basic is using alkaline compounds are cheap and easily available to eliminate the sulfate groups on the K-carrageenan, with the water immersion method of Ca(OH)2 to increase the degree of molecular uniformity and gel strength. This study is to determine the effect of Ca(OH)2 water immersion of sulphate content and gel strength. This study its experimental research laboratory with a completely randomized design and variations in treatment where seaweed samples were treated with submersion of Ca(OH)2 at different concentration (1.2 g/L, 0.6 g/L, and 0.3 g/L). The experiments were performed with 3 replications. The first extraction process used 5% KOH, being the second extraction used 1% KCl. Determination was carried out toward powder of carrageenan, its chemical characters (moisture content, ash, and sulphate), physical characters (viscosity, gel strength, and color of thalus) carrageenan had produced. The results showed that seaweed treated with 0.3 g/L Ca(OH)2 very significantly influent (p <0.01), produced the highest gel strength at 516.23 dyne/cm with the lowest sulfate levels at 20.84 %.
Pengaruh Penambahan NPK dan UREA Pada Media Air Pemeliharaan Terhadap Pertumbuhan Rumput Laut Caulerpa racemosa var. uvifera Setiaji, Kristama; Santosa, Gunawan Widi; Sunaryo, Sunaryo
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (88.896 KB) | DOI: 10.14710/jmr.v1i2.2018

Abstract

Seaweed is a low-level photosynthetic organism that has no stem, leaves, or root. Seaweeds are commonly used as food and as an ingredient for the food industry, pharmaceutical industry, cosmetics industry, and other industries. Caulerpa is potential to be cultivated because it has been known and liked by people. Beside, Caulerpa also has economic value for people. This kind of seaweed grows seasonally, but sometimes Caulerpa cannot be found in the water even during the season because its growth highly depends on the environment’s condition. This situation leads to Caulerpa production shortages. Hence, Caulerpa cultivation is necessary. The purpose of this research is to know the effect of adding NPK and urea at different concentration to the growth rate of Caulerpa racemosa var. uvifera. This research was conducted from May till July 2011 at Laboratory of Marine Science, Faculty of Fisheries and Marine Science Diponegoro University, Teluk Awur, Jepara. C. racemosa var. uvifera samples were taken from Bandengan coastal waters, Jepara the method used in this research was experimental method with a completely randomized block design. This research used 5 of treatments, each repeated 3 times. The cultivation medium used was sea water that has been deposited for 24 hours, with fertilizers added in different concentration: medium A was not added with fertilizers, medium B was added with 1.60 ppm of NPK fertilizers and 5.40 ppm of urea fertilizers, medium C was added with 4.93 ppm of NPK fertilizers and 10.82 ppm of urea fertilizers, medium D was added with 8.26 ppm of NPK fertilizers and 16.26 ppm of urea fertilizers, and medium E was added with 11.60 ppm of NPK fertilizers and 21.70 ppm of urea fertilizers. The data gained were wet weight of seaweed and water quality of the cultivation medium. The data was analyzed using ANOVA. The result showed that the addition of NPK and urea fertilizers in different concentration gave different effect (p < 0.01) among each treatment. The highest specific growth rate of C. racemosa var. uvifera was achieved in medium D (6.86 % per day with 8.26 ppm of NPK and 16,26 ppm of urea addition) while the lowest specific growth rate was obtained in medium A (5.97% per day with no NPK and urea addition).
Hubungan Kandungan Nitrat Dan Fosfat Dalam Substrat Terhadap Kerapatan Lamun Di Perairan Pantai Prawean, Jepara Subiakto, Achmad Yusuf; Santosa, Gunawan Widi; Suryono, Suryono; Riniatsih, Ita
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.503 KB) | DOI: 10.14710/jmr.v8i1.24329

Abstract

Senyawa nitrat dan fosfat merupakan nutrien yang dapat dijadikan sebagai petunjuk kesuburan perairan dan dibutuhkan baik pertumbuhan dan perkembangan lamun. Nutrien di perairan padang lamun berperan sebagai faktor pembatas pertumbuhan. Penyerapan nutrien oleh lamun dilakukan oleh daun dan akar. Besarnya kandungan nutrien dalam sedimen bukan berarti akan selalu dalam konsentrasi yang sama pada karakteristik  sedimen dasar dan kedalaman perairan. Bila terjadi perbedaan maka hal ini bisa mempengaruhi terjadinya perbedaan kondisi kepadatan dan sebaran pada setiap jenis lamun yang tumbuh dalam perairan, oleh karena itu perlu dilakukan penelitian tentang hubungan kandungan Nitrat dan fosfat dalam substrat terhadap kerapatan lamun di perairan pantai Prawean, Jepara. Penelitian ini dilakukan pada bulan Desember 2018- Januari 2019. Metode penentuan lokasi pengambilan sampel dengan metode purposive sampling. Materi yang digunakan dalam penelitian adalah sampel sedimen, parameter perairan, dan kerapatan lamun. Berdasarkan hasil penelitian didapatkan Nilai kandungan Nitrat di substrat Perairan Pantai Prawean Jepara berkisar antara 1,27–1,36 mg/L tergolong pada kategori kesuburan rendah. Nilai kandungan Fosfat pada sedimen yaitu 0,049–0,086 mg/L tergolong pada kategori rendah hingga tinggi. Tingkat kerapatan padang lamun berada pada kondisi kerapatan sangat  rapat (> 175 tegakan/m2).  Nitrate and phosphate compounds are nutrients that could be used as an indicator of aquatic fertility and needed by for growth and development of seagrass. Nutrients in seagrass waters serve as a limiting factor for growth. Nutrient absorption by seagrass were done by leaves and roots. The amount of nutrient content in sediment does not mean would be always same at the concentration on the basic sediment characteristics and depth water level. If there is a difference, it will cause an affect the different conditions of density and distribution in each type of seagrass which grows in the waters, therefore it is necessary to do research about relation of nutrient in the substrate to seagrass density in Prawean Beach, Jepara. This research was conducted in December 2018 - January 2019. The method used in this study was descriptive method. The material used in the study were sediment samples, water parameters, and seagrass density. Based on the results , it was found that the value of nitrate in substrate in the waters of Prawean Jepara Beach ranged from 1.27 - 1.36 mg. L-1 belonging to the low fertility category. The value of Phosphate content in substrate was 0.049 - 0.086 mg. L-1 belonging to the low until high category. The density level of seagrass at the tight density condition very tight >175 stands. m-2.
Struktur Komunitas Zooplankton di Perairan Desa Mangunharjo Kecamatan Tugu Semarang Ana, Desy Lasri; Endrawati, Hadi; Santosa, Gunawan Widi
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.214 KB) | DOI: 10.14710/jmr.v2i3.3149

Abstract

Mangunharjo village waters is located in Subdistrict Tugu, Semarang is the waters close to densely populated settlements. Household waste and industrial waste will affect water quality and community structure of zooplankton in waters. The aims of the research was to find out the community structure of Zooplankton in the village Mangunharjo Waters, subdistrict Tugu, Semarang. The method in this research was case study method with the exploratory nature of data collection used Sample Survey Method. The location was set as a research location was the location 1, as the areas of a body of a river, Location 2 as the river estuaries, and Location of 3 as ocean waters. Sampling was performed every 2 weeks for 5 times the sampling making use planktonnet with mesh size 45 μm. Sampling was carried out vertically at high tide and low tide began from May to July 2012. The results obtained 49 genera at high tide, while at low tide obtained 44 genera. Abundance obtained when the observation was an average of 17.90 specs/L at high tide, and at low tide the average gained 20.49 specs/L. Diversity of zooplankton an average of 2.20 obtained at high tide, and an average of 2.13 obtained at low tide. Homogeneity obtained average for sampling at the time of high tide and low tide with the same value at 0.56. The index domination at high tide and low tide also have the same value, the average 0.44.
PENGARUH PENGGUNAAN Divine Cigarette TERHADAP PERTUMBUHAN RUMPUT LAUT Gracilaria verrucosa (Hudson) Papenfus Imaniar, Khajar; Sunaryo, Sunaryo; Santosa, Gunawan Widi
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (704.25 KB) | DOI: 10.14710/jmr.v2i2.2353

Abstract

Seaweed culture in Indonesia has a good prospects and is very important in the supply of row material at agar industry. Request seaweed for industrial use can met through the culture process. Optimalitation of the seaweed production in marine culture need to pay attention to environmental factors, especially mercury. Pollution of mercury in the water rearing media of seaweed can damage on tissue of plant. The Divine cigarette can catch, control and decay free radicals, may with its application in the process of cultivation very important to do. This research was aimed to know the influence of Divine cigarette on the rearing media to the growth of seaweed G. verrucosa. This research was conducted at the Hatchery of Coastal Ecodevelopment Area Laboratory (LPWP) Prof. Dr. Ir. Gatot Rahardjo Joenoes, the University of Diponegoro, Jepara on June-July 2012. Treatments were the addition of the Divine cigarette in the fertilizer (A) and without Divine cigarette addition (B) on fertilizer rearing in the media of seaweed G. verrucosa. The observation were made on the spesific growth rate of seaweed G. verrucosa and statistically analyzed using t-test. The results of this research showed that the growth respons of G. verrucosa was significantly difference (p<0,05).
Distribusi Makroalgae Di Wilayah Intertidal Pantai Krakal, Kabupaten Gunung Kidul, Yogyakarta Stephani, Wandha; Santosa, Gunawan Widi; Sunaryo, Sunaryo
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (790.845 KB) | DOI: 10.14710/jmr.v3i4.11425

Abstract

Makroalgae merupakan tumbuhan laut yang berperan penting dalam ekosistem perairan. Distribusi makroalgae dipengaruhi oleh beberapa faktor baik fisika, kimia, maupun biologi. Berdasarkan pengaruh faktor pencahayaan makroalgae bisa dikelompokkan berdasarkan kandungan pigmennya. Ada 3 kelas makroalgae yaitu algae hijau (Chlorophyceae), algae coklat (Phaeophyceae) dan algae merah (Rhodophyceae). Penelitian ini bertujuan untuk mengetahui distribusi dan komposisi jenis makroalgae di wilayah intertidal Pantai Krakal, Gunung Kidul, Yogyakarta.Penelitian ini dilakukan pada bulan April 2014 di wilayah intertidal Pantai Krakal, Gunung Kidul, Yogyakarta. Pengambilan sampel dilakukan pada 6 stasiun dengan jarak antar stasiun 30 meter. Metode yang digunakan adalah transek kuadrat.Hasil penelitian menunjukkan bahwa selama penelitian ditemukan 12 spesies yang terbagi atas 3 kelas diantaranya adalah 3 spesies dari kelas Chlorophyceae, 4 spesies dari kelas Phaeophyceae, dan 4 spesies dari kelas Rhodophyceae. Makroalgae dari Stasiun 6 memiliki tingkat keanekaragaman makroalgae tertinggi dengan nilai 1,684 dan Stasiun 1 memiliki keanekaragaman terendah berada yaitu dengan nilai 1,390. Keseragaman tertinggi ditemukan pada Stasiun 3 dengan nilai 0,782 dan terendah pada Stasiun 4 dengan nilai 0,597. Indeks dominansi tertinggi berada pada Stasiun 4. Faktor yang mempengaruhi distribusi makroalgae di wilayah intertidal adalah cahaya, suhu, salinitas, pergerakan air dan jenis substrat. Semua parameter kualitas air yang telah diukur memenuhi syarat bagi pertumbuhan optimum rumput laut kecuali kandungan nitrat dan fosfat
Komposisi Fitoplankton di Pantai Maron Semarang Ramadhanty, Maria Ulfa; Suryono, Suryono; Santosa, Gunawan Widi
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (407.193 KB) | DOI: 10.14710/jmr.v9i3.27572

Abstract

ABSTRAK: Pantai Maron merupakan kawasan pesisir di kota Semarang sebagai destinasi wisata, namun sekitarnya ditemukan beberapa aktivitas seperti reklamasi pantai, membuang sampah di laut, serta kegiatan industri yang membuang limbahnya ke dalam laut. Aktivitas tersebut berdampak pada perubahan kondisi perairan sehingga akan berpengaruh terhadap kelimpahan fitoplankton. Penelitian ini bertujuan untuk mengetahui komposisi dan sebaran fitoplankton. Metode penelitian yang digunakan adalah metode survei. Pengambilan sampel terdiri dari 3 stasiun yaitu muara, pantai dan laut. Masing-masing stasiun terdiri dari 5 titik. Hasil menunjukkan Pantai Maron Semarang ditemukan 3 kelas fitoplankton yaitu Bacillariophyceae, Dinophyceae dan Cyanophyceae yang terdiri dari 24 genera. Kelimpahan fitoplankton tertinggi ditemukan pada stasiun 3 yaitu 11549,89 dan kelimpahan terendah pada stasiun 1 yaitu 7109,30. Hasil indeks keanekaragaman (H’) fitoplankton di setiap stasiun berkisar antara 2,72 – 2,76 termasuk pada kategori sedang. Indeks keseragaman (E) fitoplankton di setiap stasiun antara 0,94 – 0,96 yang tergolong keanekaragaman tinggi sedangkan nilai indeks dominasi (D) fitoplankton pada setiap stasiun yaitu 0,07 yang tergolong dominasi rendah atau tidak terdapat individu jenis yang mendominasi.ABSTRACT: Maron Beach there are activities from tourists and activities near the Maron Beach area such as the reclamation of the beach, disposing of trash in the sea and industrial activities whose waste disposal will enter the sea. These activities have an impact on changes in water conditions that affect the abundance of phytoplankton. This study aims to determine the composition and distribution of phytoplankton related to physical and chemical parameters at the November 2019 study site conducted in situ. Sampling consisted of 3 stations estuary, beach and sea. Each station consists of 5 points. The results showed Maron Beach Semarang found 3 classes of phytoplankton, there is Bacillariophyceae, Dinophyceae and Cyanophyceae consisting of 24 genera. The highest abundance of phytoplankton was found at station 3 namely 11549.89 and the lowest abundance at station 1 was 7109.30. The results of diversity index (H ') phytoplankton at each station ranged from 2.72 to 2.76 included in the medium category. Phytoplankton uniformity index (E) at each station between 0.94 - 0.96 which is classified as high diversity while the value of phytoplankton dominance index (D) at each station is 0.07 which is classified as low dominance or there is no dominating individual type.
Perbedaan NaOH Terhadap Kualitas Gracilaria verrucosa, Greville, 1830 (Florideophyceae : Gracilariaceae) Nasrulloh, Akmal; Pramesti, Rini; Santosa, Gunawan Widi
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v10i1.28541

Abstract

Gracilaria verrucosa merupakan salah satu jenis rumput laut yang berpotensi sebagai penghasil agar bernilai tinggi. Senyawa ini banyak digunakan sebagai pengental atau penstabil makanan dalam industri makanan. Jenis ini umumnya ditemukan di alam maupun dibudidayakan di tambak. Faktor fisik lingkungan dan parameter perairan dapat mempengaruhi kualitas agar yang dihasilkan. Informasi tentang kualitas agar dari rumput laut yang tumbuh di laut masih sedikit ditemukan, sehingga diperlukan penelitian. Tujuan penelitian ini untuk mengetahui pengaruh variasi konsentrasi NaOH terhadap kualitas agar G. verrucosa. Metode ekstraksi dilakukan dengan merendam sampel dalam larutan alkali (NaOH) hingga didapatkan agar, kemudian dikeringkan dan ditepung. Semua data dianalisis secara statistik yaitu normalitas, homogenitas dan two way ANOVA. Hasil ekstraksi agar didapatkan rendemen sebesar 18,44-20,35%, kadar air 13,22-15,06%, kadar abu 2,65-6,78% serta kekuatan gel 55,18-210,26 g/cm2. Hasil FTIR menunjukkan gugus galaktosa yaitu 3,6-anhidro-L-galaktosa yang menandakan sampel mengandung komposisi agar. Hasil menunjukkan bahwa konsentrasi NaOH berpengaruh nyata terhadap rendemen, kadar abu dan kekuatan gel (p<0,05) kecuali kadar air. Semakin tinggi konsentrasi NaOH maka rendemen, kadar air, kadar abu dan kekuatan gel akan semakin tinggi. Gracilaria verrucosa is one type of seaweed that has the potential to produce of high-value agar. This compound is much used as a food thickener or stabilizer in the food industry. This species is generally found in nature and cultivated in ponds. Factor of physical environmental and water parameter can affect the quality of produced agar. Information about quality of agar from seaweed that grows in the sea still rarely found, so research is needed. The purpose of this study was to determine the effect of different NaOH concentrations on the quality of agar G. verrucosa. The extraction method is done by soaking seaweed in an alkaline solution (NaOH) to obtain agar, then dried and turned into flour. All data were analyzed statistically with normality, homogenity and two way ANOVA. The results extraction of agar obtained yields 18,44-20,35%, water content 13,22-15,06%, ash content 2,65-6,78% and gel strength 55,18-210,26 g/cm2. FTIR results showed a galactose group of 3,6-anhydro-L-galactose which indicated the sample contained agar composition. The results showed that NaOH concentration significantly affected yield, ash content and gel strength (p<0,05) except water content. The higher concentration of NaOH therefore the yield, water content, ash content and gel strength would be higher.
Stabilitas Ekstrak Kasar Klorofil-a dan b Rumput Laut Caulerpa racemosa (Forsskal) J. Agardh 1873 pada Suhu dan Lama Penyimpanan yang Berbeda Mahfudh, Ihsan; Santosa, Gunawan Widi; Pramesti, Rini
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v10i2.29685

Abstract

Caulerpa racemosa merupakan salah satu jenis rumput laut hijau (Chlorophyta) yang memiliki pigmen fotosintetik klorofil-a dan klorofil-b. Pigmen tersebut labil terhadap suhu dan cahaya. Tujuan penelitian ini adalah mengetahui pengaruh suhu dingin (9oC) dan suhu ruang (29oC) terhadap stabilitas ekstrak kasar pigmen klorofil dengan lama penyimpanan 7 hari. Metode yang digunakan pada penelitian adalah eksperimental laboratoris. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) faktorial dengan 2 faktor yaitu suhu (9oC, 29oC) dengan interval pengujian (1, 3, 5, 7 hari). Ekstraksi dilakukan dengan metode maserasi dengan pelarut ethanol 96%. Parameter yang diamati berupa konsentrasi klorofil-a, klorofil-b, kecerahan ekstrak dan pH. Hasil penelitian menunjukkan konsentrasi klorofil-a, klorofil-b, dan pH menurun sedangkan kecerahan ekstrak meningkat setelah disimpan selama 7 hari baik pada suhu dingin maupun suhu ruang. Penurunan tertinggi konsentrasi klorofil-a sebesar 1,32 mg/g, klorofil-b sebesar 2,09 mg/g dan nilai pH sebesar 6 pada penyimpanan suhu ruang, penyimpanan pada suhu dingin mengalami penurunan terendah dengan konsentrasi klorofil-a sebesar 1,42 mg/g, klorofil-b sebesar 2,21 mg/g dan nilai pH sebesar 6,2. Nilai kecerahan ekstrak mengalami kenaikan tertinggi pada penyimpanan suhu ruang sebesar 30,99, sedangan terendah pada suhu dingin sebesar 29,25. Caulerpa racemosa is a one kind of green seaweed (Chlorophyta) which has photosynthetic pigment chlorophyll-a and chlorophyll-b. The pigment is unstable with temperature and light. The purpose of this research is to find out the effect of cold temperature (9oC) and room temperature (29oC) on the stability of crude extract of C. racemosa chlorophyll pigment with a storage time of 7 days. This research was using an experimental laboratory method. The research design was used factorial Completely Randomized Design (CRD) with 2 factors, temperature (9oC, 29oC) days with interval testing on (1, 3, 5, 7 days). The Extraction was carried out by the maceration method with 96% ethanol as solvent. The observed parameters were concentration of chlorophyll-a, chlorophyll-b, extract brightness, and pH. The results showed that content of chlorophyll-a, chlorophyll-b, and pH had decreased with an increase in the brightness of the extract after being stored for 7 days at cold and room temperature. The higher decrease on content of chlorophyll-a by 1,32 mg/g, chlorophyll-b by 2,09 mg/g, and pH value of 6 when stored at room temperature, while in cold storage has the lowest decrease content of chlorophyll-a by 1,42 mg/g, chlorophyll- b by 2,21 mg/g and pH value by 6,2. The brightness value of the extract has the biggest increased at room temperature storage by 30,99 and the lowest is on the cold temperature by 29,25.
Uji Organoleptik pada Pengaruh Penambahan Rumput Laut Kappaphycus alvarezii (Doty, 1985) Florideophyceae: Solieriaceae dan Gracillaria verrucosa (Hudson, 1950) Rhodophyceae: Gracilariaceae Terhadap Produk Mie Suket Segoro Atiqoh, Lailatul; Susanto, AB; Santosa, Gunawan Widi
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v10i1.28494

Abstract

Mie merupakan suatu jenis makanan hasil olahan tepung yang sudah dikenal dan digemari oleh sebagian besar masyarakat Indonesia. Rumput laut K. alvarezii merupakan rumput laut penghasil karaginan (karigenofit)danG. verrucosa merupakan rumput laut penghasil agar (agarofit).Penelitian ini bertujuan untuk mengetahui pengaruh untuk mengetahui pengaruh penambahan rumput laut terhadap karakteristik sifat fisik mie (gel strength) dan penerimaannya dalam masyarakat, meliputi kesukaan terhadap tekstur, rasa, aroma, warna, dan kenampakan mie.Penelitian dilakukan secara eksperimental menggunakan rancangan acak lengkap (RAL) dengan 7 perlakuan dan 4 ulangan dengan perbedaan konsentrasi penambahan rumput laut segar yakni: Kontrol (karagenan + terpung terigu), A (K.alvarezii + karagenan + terpung terigu),B (G.verrucosa + karagenan + tepung terigu). Kemudian dilakukan uji organoleptik yang meliputi tekstur, warna, rasa dan aroma produk mie. Hasil penelitian menunjukkan bahwa uji organoleptik terhadap tekstur mie yang paling disukai yaitu pada perlakuan A2 (4,30), dan yang tidak disukai yaitu padaperlakuan B3 (3,27). Rasa yang paling disukai yaitu perakuan A2 (3,74) dan yangtidak disukai pada perlakuan B3 (2,64). Aroma yang paling disukai yaitu pada perlakuan A3 (3,63) dan yang tidak disukai yaitu pada perlakuan B1 (2,71). Warna yang paling disukai yaitu pada perlakuan B3 (3,67) dan yang tidak disukai yaitu perlakuan A2 (3,53). Kenampakan yang paling disukai yaitu pada mie dengan perlakuan A3(3,80) dan yang tidak disukai yaitu pada perlakuan B3 (3,54 Hasil dari ANOVA gel strength menunjukkan bahwa penambahan rumput laut berpengaruh nyata terhadap sifat fisik mie P<0.05). Noodle is a type of processed food that is well-known and favored by most Indonesian people. K. alvarezii seaweed is a carrageenan-producer seaweed (carregenophyte) and G. verrucosa is agar-producer seaweed (agarophyte). This study aims to determine the effect of the addition of seaweed to the characteristics of the physical properties of noodles (gel strength) and its acceptance in community, including preference for texture, taste, scent, color, and appearance of noodles. The research was conducted experimentally using a completely randomized design (CRD) with 7 treatments and 4 replications with different concentrations of fresh seaweed addition namely: Control (carrageenan + wheat flour) , A (K. alvarezii + carrageenan + wheat flour), B (G.verrucosa + carrageenan + wheat flour). Then the organoleptic test was performed which included the texture, color, taste and aroma of the noodle product. The results showed that the most preferred organoleptic test on the texture of noodles was in the treatment A2 (4.30), and the one that was disliked was the B3 treatment (3.27). The most preferred flavor is rooting A2 (3.74) and which is not preferred in B3 treatment (2.64). The most preferred scent was in treatment A3 (3.63) and the one that was disliked was in treatment B1 (2.71). The most preferred color is the B3 treatment (3.67) and the least preferred one is the A2 treatment (3.53). The most preferred appearance was noodles with A3 treatment (3.80) and the undesirable one was on B3 treatment (3.54 results from ANOVA gel strength showed that the addition of seaweed significantly affected the physical properties of noodles P <0.05).
Co-Authors AB Susanto Agus Dermawan Akmal Nasrulloh Ali Djunaedi Ali Djunaedi Ali Djunaedi Ali Djunaedi Ali Ridlo Angelina Yusniar Christanty Sihotang Antonius Budi Susanto Arihanda, Dea Davita Putri Atiqoh, Lailatul Bambang Yulianto Christian Jimmy Dea Davita Putri Arihanda Delianis Pringgenies Desy Lasri Ana Dieng Widawati Dodi Rachman Edi Wibowo Kushartono Elfonso Robby Sitorus Endang Supriyantini Endarwantti, Vionita Errizal Machmud Putra Ervia Yudiati Faiz Naida Salimah Fauzi Anwar Fauzi Anwar Girsang, Putri Hutari Hadi Endrawati Ichsan Suryo Wibowo Ihsan Mahfudh Irwani Irwani Ita Riniatsih Jusup Suprijanto Karla Lutfia Rahmadanti Ken Suwartimah Khajar Imaniar Khudin, Miftah Kristama Setiaji Kristama Setiaji Ladies Nikita Alamanda Lailatul Atiqoh Mahfudh, Ihsan Maria Ulfa Ramadhanty Miftah Khudin Muhammad Raihan Faqiha Bintang Azzura Narendra Prasidya Wishnu Nasrulloh, Akmal Nevanda Kusuma Wardani Ni'mah, Ulin Nirwani Nirwani Nirwani Nirwani Nirwani Soenardjo Putra, Errizal Machmud Rachman, Dodi Raditya Ahmad Rifandi Radityo Haris Ramadhanty, Maria Ulfa Retno Hartati Ria Azizah Rini Pramesti Rotua Malau Sihotang, Angelina Yusniar Christanty Sitorus, Elfonso Robby Sri Yulina Wulandari Subiakto, Achmad Yusuf Sunaryo Sunaryo Sunaryo Sunaryo Suryono Suryono Ulin Ni&#039;mah Vera Framegari Vera Framegari Vivian Ayu Cyntya Wahyu Bagio Leksono Wahyu Febrianto Wakhid Indra Kusuma Wandha Stephani, Wandha Wibowo, Ichsan Suryo Wilis Ari Setyati