Article Per Year (5 Year)
p-Index From 2020 - 2025
2.155
P-Index
This Author published in this journals
All Journal JSME MIPA UNIMA Jurnal Produksi Tanaman Indonesian Journal of Biotechnology Jurnal Sains dan Teknologi Pangan Jurnal Review Pendidikan dan Pengajaran (JRPP) SOSCIED Makara Journal of Science Indonesian Biodiversity Journal Rumphius Pattimura Biological Journal Indonesian Biodiversity Journal Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa
Helen Joan Lawalata
Universitas Negeri Manado
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Education Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Public Health Social Sciences Veterinary Other

Published : 16 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 16 Documents
Search

 1   2 
Diversity of Echinoderms on the Beach of Ranowangko II Village, Kombi District, Minahasa Regency Letsoin, Imanuel Junisa Adolfina; Rampengan, Mercy Maggy Franky; Roring, Verawati Ida Yani; Lawalata, Helen Joan
RUMPHIUS Vol 6 No 1 (2024): RUMPHIUS Pattimura Biological Journal
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/rumphiusv6i1p48-55

Abstract

This research is motivated by the lack of studies and absence of research data on the diversity of Echinoderms on the Beach of Ranowangko II Village, Kombi District, Minahasa Regency. The aim of this study is to determine the diversity of the phylum Echinodermata found on the Beach of Ranowangko II Village, Kombi District, Minahasa Regency. Sampling in this research used the quadrat transect method with 3 transect lines, each line being 100 m long, and 10 quadrats, each measuring 1 x 1 m². The results of the study found 4 classes and 5 species including the class Asteroidea (Protoreaster nodosus), class Ophiuroidea (Ophiocoma scolopendrina), class Echinoidea (Tripneustes gratilla), class Holothuroidea (Holothuria atra & Holothuria vagabunda), and there were 21 individuals, and the dominant species is Holothuria atra from the Holothuroidea class of which there are 11 individuals, indicating that the diversity index (H’) of the phylum Echinodermata on the location is moderate with a value of 1.204. These findings offer initial insights into the condition of the local ecosystem, classified as moderate, and may serve as a foundational reference for long-term ecological monitoring.
KARAKTER KIMIA DAN PASTING PROPERTIES PATI JAGUNG (Zea mays) HASIL EKSTRAKSI MENGGUNAKAN NATRIUM METABISULFIT Moko, Emma Mauren; Rey, Feyne Jelita; Lawalata, Helen Joan; Rawung, Livana Dethris; Rahardiyan, Dino
Jurnal Sains dan Teknologi Pangan Vol 9, No 3 (2024):
Publisher : JURUSAN ILMU DAN TEKNOLOGI PANGAN, UNIVERSITAS HALU OLEO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jstp.v9i3.48082

Abstract

Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh ekstraksi dengan perlakuan perendaman menggunakan natrium metabisulfit terhadap karakter pati jagung (Zea mays). Parameter yang diamati meliputi :kadar proksimat yaitu kadar abu, kadar protein, kadar karbohidrat, kadar lemak, dan kadar air), uji warna yaitu nilai L*, a* dan b*, karakter pasting properties yaitu peak viscosity, through viscosity, breakdoen viscosity, final viscosity, setback viscosity, peak time dan pasting temperature. Hasil penelitian menunjukan bahwa natrium metabisulfit memberikan pengaruh yang berbeda nyata terhadap kadar abu, protein, karbohidrat, lemak, air, warna, rendemen dan pasting properties.
Pengaruh Penerapan Model Pembelajaran Guided Discovery Learning Menggunakan Pendekatan Scientific Terhadap Hasil Belajar Siswa Marchio Yosua Gratia Mamesah; Meyke Paat; Helen Joan Lawalata
Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa Vol. 2 No. 3 (2024): Mei : Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkas
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/algoritma.v2i3.57

Abstract

This research aims to determine the effect of the guided discovery learning model on student learning outcomes in class 12 using a scientific approach; in this research, the researcher used 2 learning methods, one of which is the conventional method; the researcher used 2 classes as samples, where each class was 15 students in each class, was coded as class A for the control class and class B for the experimental class. The research instrument used was a question in the form of a posttest. 
IDENTIFIKASI BAKTERI YANG TUMBUH PADA OLAHAN ABON IKAN CAKALANG (Katsuwonus pelamis L.) DARI UMKM KOTA BITUNG Daud, Putri; Naharia, Orbanus; Lawalata, Helen Joan; Setyawati, Iriani; Nangoy, Wiesye M. S>
SOSCIED Vol 7 No 2 (2024): SOSCIED - November 2024
Publisher : LPPM Politeknik Saint Paul Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32531/jsoscied.v7i2.875

Abstract

Skipjack Tuna (Katsuwonus pelamis L.) is a pelagic fish that dominates the waters of the Indian and Pacific Oceans. This fish has unique physical characteristics, including an aerodynamic body, a metallic blue or teal back, and transverse stripes that distinguish it from other species. In Indonesia, skipjack tuna is abundant in the waters of Manado and Maluku. This study aims to determine the types of bacteria present in processed skipjack tuna floss (abon cakalang) based on morphological and physiological characteristics through biochemical tests. This study employs a qualitative descriptive approach conducted in a laboratory setting. Data were gathered through direct observation of samples undergoing various tests and subsequently presented in a descriptive manner. Based on the identification data, 30 bacterial isolates were found in the processed skipjack tuna floss. The isolates were identified macroscopically and microscopically. The findings of the study reveal that the bacteria found in processed skipjack tuna floss, based on biochemical tests and profile matching, are suspected to belong to the Staphylococcus and Vibrio genera.
Observations on the Biodegration by Solid State Fermentation of the Giant Swamp Taro (Cyrtosperma merkusii) Biomass by two endolichenic fungi isolates Helena, Maria; Lawalata, Helen Joan; Rahardiyan, Dino; Rawung, Livana Dethris; Moko, Emma Mauren
Makara Journal of Science
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Giant swamp taro (GST/Cyrtosperma merkusii), a local North Sulawesi coastal plant, is underutilized but has high po-tential for cultivation as a paludiculture plant on rewetted peatland restorations. GST has high starch content and is currently being explored for potential use. This study explored the potential of using the biomass pulp yielded as resi-dues of the starch extraction process. Endolichenic fungi (Trichoderma reesei and Aspergillus aculeatus) isolated from local lichens, were inoculated on the GST biomass in a solid state fermentation (SSF). Findings of this study indicate that both isolates were effective in degrading the lignocellulosic biomass of GST over an incubation period of 28 days, focusing on cellulose as the targeted polysaccharide. Although T. reesei requires a more adjusted carbon source than A. aculeatus to effectively process the biomass, the effectiveness of the bioprocess after adjustment matched that of A. aculeatus. When hemicellulose is targeted, other strategies must be used to prevent destruction of hemicellulose during the process. This phenomenon should be explored in further studies. These findings indicate the potential of industrial-izing cellulose-based products from GST using local North Sulawesi fungal species abundantly occurring in local eco-systems.
Identifikasi dan Keanekaragaman Spesies Tumbuhan Paku-pakuan di Kawasan Hutan Rurukan Kecamatan Tomohon Timur, Sulawesi Utara Tuelah, Syela Nathasya; Moko, Emma Mauren; Lawalata, Helen Joan; Butarbutar, Regina
Produksi Tanaman Vol. 11 No. 3 (2023): Maret
Publisher : Jurusan Budidaya Pertanian Fakultas Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.protan.2023.011.03.08

Abstract

Tumbuhan paku memiliki tingkat sebaran yang tinggi serta tingkat keanekaragaman spesies yang tinggi. Keanekaragaman jenis tumbuhan paku memiliki manfaat bagi kehidupan karena memiliki nilai ekonomi yang tinggi misalnya tumbuhan paku-pakuan dapat dijadikan sumber obat tradisional, sebagai tanaman hias serta berperan dalam menjaga keseimbangan hutan, namun informasi tentang jenis serta nilai kegunaannya masih kurang diketahui oleh masyarakat. Tujuan dari penelitian ini yaitu untuk melakukan identifikasi dan mengetahui indeks keragaman tumbuhan paku-pakuan di kawasan hutan Rurukan Kecamatan Tomohon Timur, Sulawesi Utara. Penelitian ini dilakukan dengan menggunakan metode survei eksploratif dengan cara melakukan penjelajahan di setiap stasiun atau plot penelitian. Pengambilan sampel dalam penelitian ini dilakukan dengan cara purposive sampling pada stasiun atau plot yang telah ditentukan. Analisis data dilakukan dengan metode kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa pada kawasan hutan Rurukan Kecamatan Tomohon Timur terdapat 11 jenis tumbuhan paku dari 8 famili, dengan indeks keanekargaman yang dikategorikan pada tingkat keanekaragaman sedang.
Co-Authors Anita Costanci Christine Tengker Christny Ferdina Evie Rompas Daud, Putri Debby Jacqualine Jochebed Rayer Delvy Regina Leunufna Emma M Moko Endang Sutriswati Rahayu Helena, Maria IRIANI SETYAWATI Jelita Pricilya Tompolumiu Kansile, Elma Fridayanti Keysia Stephanie Tesalonica Mulder Langkah Sembiring LANGKAH SEMBIRING Letsoin, Imanuel Junisa Adolfina Livana Dethris Rawung Maradesa, Sartika Marchio Yosua Gratia Mamesah Meike Paat Miracle Abbighael Varencia Welan Mokosuli Yermia Samuel Nonny Manampiring Nova L.I.M Ogi Orbanus Naharia Rahardiyan, Dino Rahayu, Endang Sutriswati Rampengan, Mercy Maggy Franky Regina R. Butarbutar Rey, Feyne Jelita Tuelah, Syela Nathasya Verawati I Y Roring Verawati Ida Yani Roring Wiesye Nangoy