scholarly journals Overexpression of Gα Gene Increases Growth and Hyposaline Tolerance in Kappaphycus alvarezii Transgenic Plantlets

BIOTROPIA ◽  
2021 ◽  
Vol 28 (3) ◽  
Keyword(s):  
Kappaphycus Alvarezii ◽  
Transgenic Plantlets

PENENTUAN DAERAH POTENSIAL BUDIDAYA RUMPUT LAUT KAPPAPHYCUS ALVAREZII DI PROVINSI NUSA TENGGARA TIMUR

2019 ◽  
Vol 3 ◽  
pp. 929
Author(s):  
Marianus Filipe Logo ◽  
N M. R. R. Cahya Perbani ◽  
Bayu Priyono
Keyword(s):  
Dissolved Oxygen ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Kappaphycus Alvarezii ◽  
Sea Surface

Provinsi Nusa Tenggara Timur (NTT) merupakan penghasil rumput laut kappaphycus alvarezii kedua terbesar di Indonesia berdasarkan data Badan Pusat Statistik (2016). Oleh karena itu diperlukan zonasi daerah potensial budidaya rumput laut kappaphycus alvarezii untuk pengembangan lebih lanjut. Penelitian ini bertujuan untuk menentukan daerah yang potensial untuk budidaya rumput laut kappaphycus alvarezii di Provinsi NTT berdasarkan parameter sea surface temperature (SST), salinitas, kedalaman, arus, dissolved oxygen (DO), nitrat, fosfat, klorofil-a, dan muara sungai. Penentuan kesesuaian lokasi budidaya dilakukan dengan memberikan bobot dan skor bagi setiap parameter untuk budidaya rumput laut kappaphycus alvarezii menggunakan sistem informasi geografis melalui overlay peta tematik setiap parameter. Dari penelitian ini diperoleh bahwa kadar nitrat, arus, kedalaman, dan lokasi muara sungai menjadi parameter penentu utama. Jarak maksimum dari bibir pantai adalah sekitar 10 km. Potensial budidaya rumput laut kappaphycus alvarezii ditemukan di Pulau Flores bagian barat, kepulauan di Kabupaten Flores Timur dan Alor, selatan Pulau Sumba, Pulau Rote, dan Teluk Kupang.

The Influence of Depth and Sargassum Weight on The Growth of Kappaphycus alvarezii

2019 ◽  
Vol 9 (2) ◽  
pp. p8645
Author(s):  
Naning Dwi Sulystyaningsih ◽  
Rajuddin Syamsuddin ◽  
Zainuddi .
Keyword(s):  
Kappaphycus Alvarezii

Pengaruh Pemberian Ekstrak Rumput Laut Merah (Kappaphycus alvarezii) terhadap Kadar LDL Pada Tikus Putih (Rattus Norvegicus) Jantan Galur Wistar Yang Diberi Diet Tinggi Lemak

2018 ◽  
Vol 15 (2) ◽  
pp. 112
Author(s):  
MENTARI AMENDA SAPUTRI ◽  
HERIN SETIANINGSIH
Keyword(s):  
Rattus Norvegicus ◽  
Kappaphycus Alvarezii ◽  
Control Group ◽  
Control Group Design ◽  
Group Design ◽  
Post Test ◽  
One Way Anova ◽  
Test Control

<p class="Default">Penyakit kardiovaskular merupakan penyebab kematian nomor satu di dunia. Gaya hidup masyarakat terutama dalam mengkonsumsi diet yang tidak sehat dapat meningkatkan kadar LDL yang dapat menyebabkan  penyakit kardiovaskular. Rumput laut merah (<em>Kappaphycus alvarezii</em>)<em> </em>yang banyak dibudidayakan di Indonesia mengandung flavonoid dan triterpenoid yang diduga dapat menurunkan kadar LDL. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian ekstrak rumput laut merah (<em>Kappaphycus alvarezii</em>) <em> </em>terhadap kadar LDL pada tikus putih (<em>Rattus norvegicus</em>) jantan galur Wistar yang diberi diet tinggi lemak. Penelitian ini adalah penelitian eksperimental murni laboratorik dengan rancangan penelitian <em>Post Test Control Group Design. </em>Sampel yang digunakan adalah 24 ekor tikus putih (<em>Rattus norvegicus</em>) jantan galur Wistar yang dibagi ke dalam tiga kelompok: kelompok yang diberi diet standar selama 28 hari (K1), kelompok yang diberi diet tinggi lemak selama 28 hari (K2), dan kelompok yang diberi diet tinggi lemak selama 28 hari dan pada hari ke-15 sampai hari ke-28 diberi ekstrak rumput laut merah (<em>Kappaphycus alvarezii</em>) dengan dosis 140mg/200grBB/hari (K3). Hasil analisis statistik <em>One Way Anova </em>menunjukkan bahwa terdapat perbedaan kadar LDL yang signifikan antara ketiga kelompok pada penelitian ini (p&lt;0,001). Kadar LDL pada K2 (=16,00±3,29) meningkat secara bermakna dibandingkan dengan K1 (=10,62±1,77). Sedangkan kadar LDL pada K3 (=6,88±2,42) menurun secara bermakna dibandingkan dengan K2. Dari hasil penelitian ini dapat disimpulkan bahwa ekstrak rumput laut merah (<em>Kappaphycus alvarezii</em>) berpengaruh terhadap kadar LDL darah pada tikus putih (<em>Rattus norvegicus</em>) jantan galur Wistar yang diberi diet tinggi lemak.</p><p><strong>Kata kunci</strong> : diet tinggi lemak, LDL, <em>Kappaphycus alvarezii</em></p>

scholarly journals Seaweed aquaculture: a preliminary assessment of biosecurity measures for controlling the ice-ice syndrome and pest outbreaks of a Kappaphycus farm

2021 ◽  
Author(s):  
Cicilia S. B. Kambey ◽  
Iona Campbell ◽  
Elizabeth J. Cottier-Cook ◽  
Adibi R. M. Nor ◽  
Azhar Kassim ◽  
...  
Keyword(s):  
Hazard Analysis ◽  
Kappaphycus Alvarezii ◽  
Control Point ◽  
Control Measures ◽  
Seaweed Aquaculture ◽  
Critical Control Point ◽  
Management Measures ◽  
Long Line ◽  
Pest Outbreaks ◽  
The Impact

AbstractThe application of biosecurity in seaweed aquaculture plays an important role in reducing the impact of disease and pest outbreaks. The continuous occurrence of seaweed pests including the macroalgal epiphytes, epi-endophytic filamentous algae and biofilms on Kappaphycus farms may also potentially induce further incidences of the ice-ice syndrome. In this study, on-farm biosecurity management measures were tested on the commercially grown seaweeds Kappaphycus malesianus and Kappaphycus alvarezii during peak ice-ice season at Gallam-Gallam Village, Sabah, Malaysia. The investigation was focused on preventative control measures including the early detection of the ice-ice syndrome and pests through propagule health checks, regular cleaning of the crop thallus and associated long-line ropes and monitoring of the environment. Farm procedures and practices were also assessed in terms of their biosecurity ‘risk’ using the hazard analysis and critical control point (HCCAP) approach. Observations were replicated in two different farm management systems; one system adopted routine biosecurity measures and the other had no biosecurity measures. The results showed that the ice-ice syndrome and pest outbreak was significantly decreased by 60–75% for K. malesianus and 29–71% for K. alvarezii at the farm which adopted the routine biosecurity measures compared with the no biosecurity treatment. The biosecurity measures also significantly improved growth rate and seaweed quality. The infection levels of the epi-endophyte Melanothamnus sp. contributed to the ice-ice syndrome in K. malesianus, whilst the epiphyte coverage was correlated to the ice-ice incidence in K. alvarezii. This study provides the first evidence of biosecurity management measures significantly decreasing the incidence of the ice-ice syndrome and pests on a commercial seaweed farm.

Effects of biofloc effluent in different regimes as a fertilizer for Kappaphycus alvarezii: indoor maintenance and sea cultivation

2021 ◽  
Author(s):  
Rodrigo De Martino ◽  
Luiza Vieira Mariot ◽  
Fernando Zwierzikowski da Silva ◽  
Carmen Simioni ◽  
Marcella Araújo do Amaral Carneiro ◽  
...  
Keyword(s):  
Kappaphycus Alvarezii

scholarly journals Chemistry of Tropical Eucheumatoids: Potential for Food and Feed Applications

Biomolecules ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 804
Author(s):  
Andrea Ariano ◽  
Nadia Musco ◽  
Lorella Severino ◽  
Anna De Maio ◽  
Annabella Tramice ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Inductively Coupled Plasma ◽  
Mineral Content ◽  
Kappaphycus Alvarezii ◽  
Optical Emission ◽  
Essential Elements ◽  
Feed Additive ◽  
Inductively Coupled ◽  
Food And Feed

The use of seaweeds as additives in animal nutrition may be a valid option to traditional feed as they represent a rich source of minerals, carbohydrates and antioxidants. The aim of this study was to analyze the chemical composition and in vitro antioxidant capacity of two tropical eucheumatoids, Kappaphycus alvarezii and Kappaphycus striatus, in Malaysian wild offshore waters. The chemical analysis was performed via inductively coupled plasma–optical emission spectroscopy for evaluating the concentration of toxic (Cd, Pb, Hg, As) and essential elements (Mn, Fe, Cu, Ni, Zn, Se); NMR spectroscopy was used for carrageenans investigation. Furthermore, the soluble and fat-soluble antioxidant capacities were determined by FRAP, DPPH and ABTS assays. The chemical analysis revealed a higher content of trace elements in K. alvarezii as compared to K. striatus, and both exhibited a high mineral content. No significant differences in metal concentrations were found between the two species. Both samples showed a mixture of prevailing κ- and t-carrageenans. Finally, the levels of soluble and fat-soluble antioxidants in K. alvarezii were significantly higher than in K. striatus. Our findings suggest that K. alvarezii could be used as a potential feed additive because of its favorable chemical and nutritional features.

scholarly journals Optimization of Kappaphycus alvarezii seaweed seeding system by aquaculture

2021 ◽  
Vol 649 (1) ◽  
pp. 012031
Author(s):  
D S Rahayu ◽  
M P Koentjoro ◽  
Isdiantoni ◽  
I Ekawati ◽  
E N Prasetyo
Keyword(s):  
Kappaphycus Alvarezii
Sign in / Sign up

Export Citation Format

Share Document