Strategi Riset Rumput Laut Untuk Produksi Produk Spesifik Daerah Sulawesi Tengah

Masyarakat Sulawesi Tengah pada dasarnya telah mengenal rumput laut sejak dulu, namun baru dilakukan kegiatan budidaya dalam skala kecil pada tahun 1990. Perkembangan budidaya rumput laut kearah yang lebih maju, setelah tim peneliti dari Lembaga Penelitian Perikanan Laut (LPPL) berhasil membudidayakan rumput laut jenis Eucheuma cottonii di Kepulauan Samaringga pada tahun 1997 (Fauziah, 2009; Hamja, 2009). Sejak itu, kegiatan budidaya rumput laut oleh masyarakat pesisir Sulawesi Tengah berkembang dari tahun ke tahun sejalan dengan meningkatnya kebutuhan dan nilai ekonomi rumput laut itu sendiri, yang saat ini sebagian besar masyarakat Sulawesi Tengah telah mengenal rumput laut dan telah menjadikan sebagai sumber pendapatan utama. Selain Eucheuma cottonii , berkembang pula budidaya rumput laut jenis Gracilaria sp, terutama di daerah Kabupaten Morowali. Rumput laut Eucheuma cottonii di budidayakan di laut dan merupakan penghasil karaginan, sedangkan Gracilaria sp di budidayakan di Tambak dan merupakan penghasil agar-agar. Pada tahun 2005, produksi rumput laut Eucheuma cottonii dan Gracilaria sp di Sulawesi Tengah mencapai 244.133 ton basah. Dengan produksi tersebut, Sulawesi Tengah menempati urutan ketiga penghasil rumput laut terbesar di Indonesia, setelah Sulawesi Selatan dan Nusa Tenggara Timur. Produksi tersebut sesungguhnya masih sangat rendah, jika dibandingkan dengan luas areal tersedia sebesar 106.00

KEANEKARAGAMAN RIIODOPHYCEAE DI PANTAI SUNDAK SEBAGAI SUMBER BELAJAR BIOLOGI ALGAE

The objectives of this research were to invent the red-algae diversity, its distribution, and the contribution of physical environment to ta the algae it self and their habitat. Transect method was used with plot area of I X I m. Study area, 289 m in tength, was divided into i station with 7 transects and 49 plots. Species diversity, abundance, physicil and chemical environmental factors and the pattern of distribution were the focused on. The result showed that 7 species of red-algae were founded, consist of: Corallina sp, Getlidium sp, Laurentia sp, Gigartina sp, Eucheuma sp, Gracilaria sp, and Gymnogongrus sp. The frequency and coverage from the best to the least were ai follows: Corallina sp O,iSU i"al,lZ/"; Geilidium sp 0,83% and l9%o, Laurentia sp 1016 and 1a,04%o; Gigartina sp 0,83% and 11,894; Eucheuma sp lo% oni Z,16%; Gracilaria sp lo% and 90% and Gymnogongrus sp 0,28% and 0,95%o. The distribution'of each species of red algae was clumped. -Physical and chemical environmental factor were driving the itstribution of th-e red- algae. Thus, the habitat was determined on the roclqt substrate with some griwth orientation toward the sea. Key words; Rhodophyceae diversity, Alternattive learning resource

A laser-scanning confocal microscopy study of carrageenan in red algae from seaweed farms near the Caribbean entrance of the Panama Canal

Kappaphycus alvarezii (Doty) Doty ex P.C. Silva, a red macroalga, is a commercial source of carrageenan, a widely used polysaccharide compound important in the food and pharmaceutical industries, in nanotechnology, and in pharmacological applications. Carrageenan is found mainly in the cell wall and in the intercellular matrix. This is the first study to propose the characterization of carrageenans in vitro, using the auto-fluorescence properties of the alga treated with different polyamines: putrescine, spermidine, and spermine. This study suggests a four-phase cultivation sequence for seaweed farmers to enhance and assess the potential carrageenan yield of their crops. In phase 1, seedlings were treated with each of the polyamines. Explants were subsequently transferred through two additional culture phases before being planted on the sea farms in phase 4 and then harvested after 60 days for analysis. Images from transverse sections of 11 representative cultured K. alvarezii samples were obtained at 561 nm excitation wavelength for both the cell center and the cell wall of each sample. Spectral data were also analyzed using the spectral phasor algorithm of SimFCS developed at the Laboratory for Fluorescence Dynamics (www.lfd.uci.edu). We report on the identification of several spectral fluorescence emission fingerprints from different auto-fluorescence compounds spatially mapped using this technique. These fingerprints have the potential to improve strain selection of explants for enhanced carrageenan yield in seaweed farming operations as well as to enable wholesale pricing to correspond with crop quality

Ethnobotany Study of Seaweed Diversity and Its Utilization in Warambadi, Panguhalodo Areas of East Sumba District

This paper reports the ethnobotany study of seaweed diversity in Warambadi –Panguhalodo areas of East Sumba District, the island of Sumba. The study recorded19 genera of 54 species of seaweed, which were utilized as food or edible seaweed.The group consisted of 17 species of green algae, 17 species of red algae, and 20species of brown algae. The study also reported that 18 genera of 38 species weretraditionally utilized for medicinal purposes as herbal medicine. The herbal speciesconsisted of 7 species of green algae, 13 species of red algae, and 18 species ofbrown algae.Seaweed is traditionally consumed as food in various forms: raw as salad and vegetable,as pickle with sauce of allspice or with vinegar, as relish or sweetened jellies and alsocooked for vegetable soup. As herbal medicine seaweed is usually used for traditionalcosmetics, as antipyretic and antiseptic, as vermifuges, and treatments for cough andasthma, hemorrhoid, nosebleed and boils, goiter and scrofula, stomach ailments andurinary diseases.Indigenous knowledge on seaweed still exist and are continually employed bypeople living in particular areas such as the Sumba and Sabu ethnic groups. Yet,the knowledge is gradually decreasing due to localities, socio-economic change andcultural development

Keanekaragaman Riiodophyceae Di Pantai Sundak Sebagai Sumber Belajar Biologi Algae

The objectives of this research were to invent the red-algae diversity, its distribution, and the contribution of physical environment to the algae it self and their habitat. Transect method was used with plot area of I X I m. Study area, 289 m in length, was divided into 3 station with 7 transects and 49 plots. Species diversity, abundance, physical and chemical environmental factors and the pattern of distribution were the focused on. The result showed that 7 species of red-algae were founded, consist of: Corallina sp, Gellidium sp, Laurentia sp, Gigartina sp, Eucheuma sp, Gracilaria sp, and Gymnogongrus sp. The frequency and coverage from the best to the least were as follows: Corallina sp 0,43% and 2,42%; Geilidium sp 0,83% and l9%, Laurentia sp 1% and 10,04%; Gigartina sp 0,83% and 11,8%; Eucheuma sp l% and 2,16%; Gracilaria sp l% and 9% and Gymnogongrus sp 0,28% and 0,95%. The distribution of each species of red algae was clumped. Physical and chemical environmental factor were driving the distribution of the red- algae. Thus, the habitat was determined on the rocky substrate with some growth orientation toward the sea