Rumput laut merupakan sumber daya laut yang memiliki keragaman dan kaya akan nutrisi. Rumput laut sering dimanfaatkan untuk berbagai keperluan industri, baik industri pangan maupun non-pangan. Penelitian ini bertujuan untuk mengetahui potensi sumberdaya hayati rumput laut di perairan pantai Ambon. Metode penelitian ini adalah metode transek kuadrat. Pada setiap interval 10 meter dari garis pantai dilakukan sampling biomassa makroalga pada bingkai besi berukuran 50 x 50 m. Data dianalisis berdasarkan indeks ekologi yaitu komposisi jenis dan frekuensi kehadiran, selain itu potensi rumput laut sebagai bahan makanan. Rumput laut yang teridentifikasi sebanyak 23 jenis rumput laut yang tergolong dalam kelompok Rhodophyta, Phaeophyta, dan Chlorophyta. Perairan pantai Tawiri memiliki jenis rumput laut tertinggi sebesar 39%. Komposisi rumput laut tertinggi di Pantai Tawiri yaitu 14 jenis dari 10 marga yang terdiri dari 6 jenis Rhodophyceae, 4 jenis Chlorophyceae, dan 4 jenis Phaeophyceae. Frekuensi kehadiran rumput laut tertinggi di perairan pantai Tapi sebesar 12,5%. Jenis rumput laut yang memiliki potensi dimanfaatkan sebagai pangan adalah Rhodophyceae (Gracilaria, Hypnea), Phaeophyceae (Sargassum, Turbinaria, Padina), Chlorophyceae (Halimeda dan Ulva). Rumput laut selain sebagai sumber pangan komersial juga dikembangkan sebagai bahan baku industri.
Seaweed dodol is processed using basic ingredients such as Eucheuma cottonii seaweed and additives such as sugar, flour, coconut milk, salt, vanilla and other additives as well. This study was aimed to study the effect of both maizena flour and pineapple juice extract addition on the quality of seaweed dodol. Two factors of treatments were applied in this study, namely maizena flour with six levels of concentrations (0%, 10%, 20%, 30%, 40%, and 50%), and pineapple juice extract with six levels of concentrations (0%, 1%, 2%, 3%, 4%, and 5%). Sensory data of seaweed dodol were analyzed using the Friedman test, while crude fiber, protein, fat, moisture, carbohydrate and ash contents were analyzed using a descriptive statistic method. The results showed that the best sensory values (appearance, smell, taste and texture) were obtained by seaweed dodol with the treatment of 30% maizena flour and 1% pineapple juice extract. The average crude fiber, protein, fat, moisture, ash and carbohydrate contents of seaweed dodol with this treatment was 4.24%, 1.65%, 1.79%, 23.74%, 0.74% and 72.09%, respectively. Keywords: dodol, Eucheuma cottonii, maizena flour, pineapple extract ABSTRAK Dodol rumput laut diolah dengan menggunakan bahan dasar berupa rumput laut jenis Eucheuma cottonii dan bahan tambahan seperti gula, tepung, santan kelapa, garam, vanili dan lainnya. Penelitian ini bertujuan untuk mempelajari pengaruh penambahan tepung maizena dan ekstrak buah nenas terhadap kualitas dodol rumput laut. Perlakuan yang diberikan dalam penelitian ini terdiri atas dua faktor, yaitu konsentrasi tepung maizena (0%, 10%, 20%, 30%, 40%, dan 50%), dan konsentrasi sari buah nenas (0%, 1%, 2%, 3%, 4%, dan 5%). Data organoleptik dodol rumput laut dianalisis menggunakan uji Friedman, sedangkan data kadar serat kasar, kadar protein, kadar lemak, kadar air, kadar karbohidrat dan kadar abu dianalisa menggunaka statistik deskriptif. Hasil penelitian menunjukkan bahwa nilai organoleptik (kenampakan, bau, rasa dan tekstur) dodol rumput laut yang terbaik adalah perlakuan konsentrasi tepung maizena 30% dan konsentrasi ekstrak nenas 1%. Rata-rata kadar serat kasar dodol rumput laut pada perlakuan tersebut sebesar 4,24%, sedangkan kadar protein sebesar 1,65%, kadar lemak sebesar 1,79%, kadar air sebesar 23,74%, kadar abu sebesar 0,74% dan kadar karbohidrat sebesar 72,09%. Kata kunci: dodol, Eucheuma cottonii, sari buah nenas, tepung maizena
Macroalgae play an important role in the ecosystem of the coastal area, serving as a shelter ground, nursery ground, and feeding ground. Macroalgae communities are directly influenced by water quality. This study aim was to determine the correlation between the macroalgae diversity and water quality in southwest Maluku waters. This research was conducted in September 2019 at seven research stations. Macroalgae samples were collected by transect method, while seawater quality was measured using Van Dorn Water Sampler. The macroalgae diversity, species composition, and dominance were determined. Water quality parameters analyzed were temperature, salinity, pH, phosphate, nitrate, and ammonia. Correlations between macroalgae diversity and water quality were determined using principal component analysis. This study recorded 45 species of macroalgae consisting of 15 species of red algae (Rhodophyta), 6 species of brown algae (Phaeophyta), and 24 species of green algae (Chlorophyta). Diversity Index varied ranged from low to moderate categories (0.969 - 2.345). Water quality in general is still quite good for macroalgae life. Macroalgae diversity and water quality correlate and influence each other.
Makroalgae termasuk bagian dari flora yang terdiri atas banyak jenis dan memiliki peranan penting pada lingkungan laut salah satunya adalah Perairan Pulau Keffing di Kecamatan Seram bagian Timur, Kabupaten Seram Bagian Timur. Penelitian dilaksanakan pada November 2017. Metode yang digunakan pada penelitian ini adalah metode eksplorasi dengan pengambilan sampel secara line transek kuadrat. Lokasi pengambilan sampel dibedakan menjadi tiga stasiun. Jumlah jenis algae yang dijumpai dalam penelitian ini sebanyak 16 jenis yang terdiri atas 9 jenis dari kelas algae Chlorophyta, satu jenis dari kelas Phaeophyta dan enam jenis dari kelas Rhodophyta. Jenis-jenis yang ditemukan memiliki potensi ekonomi, baik kepada lingkungan periaran maupun kepada manusia, namun pemanfaatannya belum dioptimalkan oleh masyarakat karena sebagian hanya dimanfaatkan untuk makanan. Dari hasil pengukuran parameter lingkungan menunjukan masih sesuai bagi pertumbuhan rumput laut. Perairan pulau Keffing dan sekitarnya memiliki kemungkinan untuk dikembangkannya kegiatan usaha budidaya rumput laut serta pengembangan pengolahan potensinya. AbstractMacroalgae is part of the flora consists of many types and has an important role in the marine environment, one of which is the waters of Keffing Island in the East Seram District, East Seram District. The research was carried out in November 2017. The method used in this study is an exploratory method by taking a sample using a quadratic transect line. The sampling locations were divided into three stations. The number of algae species found in this study was 16 species consisting of 9 species from the Chlorophyta class, one from the Phaeophyta class, and six species from the Rhodophyta class. The species found have economic potential, both for the aquatic environment and for humans, but their utilization has not been optimized by the community because some of them are only used for food. The results of the measurement of environmental parameters show that it is still suitable for seaweed growth. The waters of Keffing Island and its surroundings have the possibility for the development of seaweed cultivation activities and the development of processing potential.
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