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EDITOR IN CHIEF Gerald H. Tamuntuan, Universitas Sam Ratulangi, Indonesia MANAGING EDITOR Verna A. Suoth, Universitas Sam Ratulangi, Indonesia BOARD OF EDITOR Audy Wuntu, Fakultas MIPA Univesitas Sam Ratulangi BOARD OF EDITOR Nio Song Ai, Universitas Sam Ratulangi, Indonesia BOARD OF EDITOR Nelson Naingolang, Universitas Sam Ratulangi, Indonesia
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Sulawesi utara
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Jurnal MIPA
Published by Universitas Sam Ratulangi
ISSN : -     EISSN : 23023899     DOI : https://doi.org/10.35799/jmuo.10.2.2021.33592
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
Jurnal MIPA menjadi sarana publikasi bagi akademisi dan peneliti. Jurnal MIPA mempublikasikan artikel hasil penelitian di bidang : Matematika Fisika Biologi Kimia
Arjuna Subject : Umum - Umum
Articles 12 Documents
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Search results for , issue "Vol 5, No 1 (2016)" : 12 Documents clear
Keragaman Lamun (Seagrass) di Pesisir Desa Lihunu Pulau Bangka Kecamatan Likupang Kabupaten Minahasa Utara, Sulawesi Utara Kamarrudin, Zakiah Susanti; Rondonuwu, Sendy B.; Maabuat, Pience Veralyn
Jurnal MIPA Vol 5, No 1 (2016)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.5.1.2016.11194

Abstract

Lamun adalah tumbuhan berbunga yang dapat tumbuh dengan baik pada lingkungan laut dangkal. Penelitian ini dilaksanakan di Pesisir Desa Lihunu dengan menggunakan metode purposive random sampling yang dilaksanakan pada bulan Agustus 2015 saat surut terendah. Analisis data meliputi perhitungan dengan menggunakan rumus menurut Shannon & Wienner dan buku identifikasi lamun. Berdasarkan hasil penelitian terdapat tujuh jenis lamun yang ditemukan yaitu, Enhalus acoroides (L.f.) Royle, Thalassia hemprichii (Ehrenberg) Ascherson, Cymodocea rotundata (Ehrenberg) Ascherson, Cymodocea serrulata (R. Brown) Ascherson, Halophila ovalis (R. Brwon) Hooker, Halodule pinifolia (Miki) den Hartog dan Syringodium isoetifolium (Ascherson) Dandy. Lamun Enhalus acoroides dan Thalassia hemprichii memiliki penyebaran terluas, karena ditemukan di seluruh transek pada lokasi penelitian. Jenis yang jarang dijumpai adalah Halophila ovalis dan Cymodocea serrulata. Jumlah individu lamun yang ditemukan adalah 2316 individu. Nilai indeks keanekaragaman di Pesisir Desa Lihunu memperlihatkan bahwa di wilayah ini keanekaragaman jenis lamun sedang dengan H’ = 1 ≤ H’ ≤ 3.Seagrass is flowering plants that can grow so well in shallow marine environments. This research was conducted in Seashore Lihunu Village on August 2015 using field observation with purposive random sampling when low withdraw. Data analysis was performed using the formula of Shannon-Wienner and identification of seagrass. Results obtained in this research showed that there are seven types of seagrass, namely Enhalus acoroides (L.f) Royle, Thalassia hemprichii (Ehrenberg) Ascherson, Cymodocea rotundata (Ehrenberg) Ascherson, Cymodocea serrulata (R. Brown) Ascherson, Halophila ovalis (R. Brwon) Hooker, Halodule pinifolia (Miki) den Hartog and Syringodium isoetifolium (Ascherson) Dandy. Enhalus acoroides and Thalassia hemprichii have wide distribution because they can be found in all transect line at research site. Species that are rarely found are Halophila ovalis and Cymodocea serrulata. Number of individual found was 2316 individuals. Value of diversity index at Seashore Lihunu Village showed that this area has moderate seagrass diversity with H’ = 1 ≤ H’ ≤ 3.
Analisis Kandungan Fitokimia dan Uji Aktivitas Antioksidan dari Tanaman Lire (Hemigraphis repanda (L) Hall F.) Rompas, Dina E. B.; Runtuwene, Max R. J.; Koleangan, Harry S. J.
Jurnal MIPA Vol 5, No 1 (2016)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.5.1.2016.11410

Abstract

Telah dilakukan penelitian mengenai analisis kandungan fitokimia dan aktivitas antioksidan dari ekstrak tanaman lire yang diekstraksi secara maserasi dengan menggunakan pelarut etanol. Analisis total kandungan fitokimia yaitu uji fenolik dengan menggunakan metode Folin-Ciocalteu dan uji flavonoid menggunakan metode AlCl3. Uji antioksidan menggunakan metode DPPH. Berdasarkan hasil pengujian kandungan fenolik dan flavonoid ekstrak etanol tanaman lire, menunjukkan bahwa kandungan fenolik lebih tinggi dibandingkan dengan kandungan flavonoid. Hasil pengujian aktivitas antioksidan menunjukkan nilai IC50 sebesar 108,673 mg/L pada ekstrak etanol tanaman lire.Research have been done to analyze the phytochemical compound and antioxidant activity from lire plant extract which was extracted based on maceration method using the ethanol solvent. The phythochemical compound analysing to determining phenolik using Folin-Ciocalteu method and AlCl3 method for flavonoid test. Antioxidant activity using the DPPH method. Based on the result, the phenolic and flavonoid compound from extract ethanol of lire plants, was showed that phenolic compound more higher than flavonoid compound. The result of this test was showed the value of IC50 is 108.673 mg/L from the lire plant extract.

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