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Asthisa, Dias
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Bioactive compounds in the algae of Kappaphycus alvarezii from Belang waters, Southeast Minahasa Regency Asthisa, Dias; Mantiri, Desy M.H.; Sumilat, Deiske A.; Rompas, Rizal M.; Sinjal, Annita Ch.; Mantiri, Rose O.S.E.
AQUATIC SCIENCE & MANAGEMENT Vol 9, No 2 (2021): OCTOBER
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.v9i2.35199

Abstract

Algae Kappaphycus alvarezii is one of the leading commodities from fisheries and marine sectors in Indonesia. This algae species has many benefits in the fields of marine biology, chemistry, pharmacy, and pharmacology, as well as an excellent nutritional content for health. It is cultivated in the coastal waters of Minahasan Peninsula, especially in Buku Village, Belang District, Southeast Minahasa Regency. This study was carried out to analyze bioactive compound in the algae. Samples of 2-weeks old were taken directly from the cultivation area. Screening test was done qualitatively while an advanced test was done using LC-HRMS method. The results showed 4 bioactive compounds detected in the sample, they are alkaloids, tannins/phenolics, saponins, and flavonoids. From the advanced test, it was found 10 major compounds in the sample, i.e. (2-ethylhexyl) phthalate, phthalic acid, D-(+)-proline, maraniol, stigmatellin Y, Pentyl isopentyl phthalate, methyl thiofentanyl, phenylethanolamine, acetyl hexamethyl tetralin, and fucoxanthin.Indonesian title: Senyawa bioaktif pada alga Kappaphycus alvarezii dari perairan Belang, Kabupaten Minahasa Tenggara
Macroalgae community structure on Kumeke Island, East Bolaang Mongondow Regency, North Sulawesi Province, Indonesia Valina, Rahmi; Asthisa, Dias; Pangalila, Novelia M.A.; Timumu, Farhan A.; Kasim, Fitra M.A.
AQUATIC SCIENCE & MANAGEMENT Vol. 12 No. 2 (2024): OCTOBER
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.v12i2.58391

Abstract

Macroalgae is one of the potential biological resources in Indonesian waters that has many important roles, from an ecological to an economic perspective. The aim of this research is to analyse the structure of macroalgae communities found in the waters of Kumeke Island, East Bolaang Mongondow Regency, Indonesia. The method used in this research is a survey with descriptive data analysis. Determining the sampling station point is carried out by purposive sampling, namely by selecting an area based on the presence of macroalgae. Macroalgae sampling used the line transect method with a quadratic sampling technique with a size of 1.5 x 1.5 m. The research results showed that the types of macroalgae found were 11 species, consisting of 3 species of Chlorophyta, 4 species of Phaeophyta, and 4 species of Rhodophyta. The density of macroalgae species is dominated by Rhodophyta (38%), Phaeophyta (31%), and Chlorophyta (30%). The total density of macroalgae is 9–46 ind/m². The diversity index ranges from 1.154 to 2.234 in the medium category, the uniformity index ranges from 0.481 to 0.932 in the high category, and the dominance index ranges from 0.114 to 0.338 in the low category.
Assessment of the pollution status of the coastal waters of Kotabunan Village, East Bolaang Mongondow Regency (North Sulawesi Province, Indonesia) using the pollution index (IP) Asthisa, Dias; Valina, Rahmi; Musada, Zulkarnain; Ilahude, Satrio; Lesi, Inka
AQUATIC SCIENCE & MANAGEMENT Vol. 12 No. 2 (2024): OCTOBER
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.v12i2.58395

Abstract

This study aims to assess the pollution status of the coastal waters of Kotabunan Village, East Bolaang Mongondow Regency, North Sulawesi Province, Indonesia, using the pollution index (PI). The water quality parameters monitored include temperature, Total Dissolved Solid (TDS), pH, Dissolved Oxygen (DO), and salinity. Analysis of water quality data was compared with class III water quality standards based on Government Regulation Number 22 of 2021. The results of the water quality analysis showed that the temperature ranged from 28.4 - 31.5 0C, TDS ranged from 2100 - 3120 mg/L, pH ranged from 7.93 - 8.24, DO ranged from 2.8 - 6.2 mg/L, and salinity ranged from 18.5 - 34 ppt. Based on these facts, the pollution index of these waters is 2.4 - 6.2 which indicates a light-moderate pollution status.
Co-Authors Deiske Adeliene Sumilat, Deiske Adeliene Ilahude, Satrio Kasim, Fitra M.A. Lesi, Inka Mantiri, Desy M. H Mantiri, Rose O.S.E. Pangalila, Novelia M.A. Rompas, Rizal M. Sinjal, Annita Ch. Timumu, Farhan A. Valina, Rahmi