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All Journal Jurnal Natur Indonesia Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION) Jurnal Ilmiah PANNMED (Pharmacist, Analyst, Nurse, Nutrition, Midwivery, Environment, Dentist) Jurnal Pembelajaran dan Biologi Nukleus IJOEP : International Journal of Ecophysiology Unri Conference Series: Community Engagement Bioscientist : Jurnal Ilmiah Biologi Community Service Seminar and Community Engagement (COSECANT)
Yurnaliza, Yurnaliza
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Sleep Late Impact on The Salivary pH Levels and Amylase Activity among Male Students who has Different BMI Category Yurnaliza
International Journal of Ecophysiology Vol. 4 No. 2 (2022): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v4i2.11379

Abstract

The lack of sleep could damage the circadian rhythm, which has implications for health issues. Here we conduct a survey on Students from the Faculty of Social and Political using purposive random sampling, by targeting student who has sleep duration low than 8 hours. We are using a questionnaire to gain information about the sleeping duration and also the Body Mass Index (BMI). Moreover, we also collect saliva samples from the students. pH Universal Indicators are used to measure the pH levels of saliva. We predict the salivary amylase activity by measuring the decrease of the substrate. We found about 27 students have a sleep duration of fewer than 6 hours. Then 19 students have a sleep duration of about 8 - 6 hours. Finally, only 5 students have a sleep duration of more than 8 hours. Our study suggests there is no significant difference between the 3 categories of sleep duration on saliva pH levels and salivary amylase activity. The same for the BMI categories. Although there are small differences sleep duration and BMI is not the major factor influencing the pH levels and amylase activity in saliva
PENGENALAN IPTEK PENGAWETAN MENGATASI KERUSAKAN PANEN PADA KELOMPOK TANI JAMUR TIRAM DI MEDAN Yurnaliza Yurnaliza; Liana Dwi Sri Hastuti; Fachri Fauzi; Desy Christine Naibaho; Retno Widia Sari
Prosiding COSECANT : Community Service and Engagement Seminar Vol 1, No 2 (2021)
Publisher : Universitas telkom

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (147.282 KB) | DOI: 10.25124/cosecant.v1i2.17541

Abstract

Jamur dikenal sebagai bahan makanan yang bergizi tinggi, terutama karena kandungan proteinnya yang tinggi. Diketahui bahwa protein nabati yang terkandung dalam jamur tiram sebanding dengan protein yang terkandung dalam sayuran. Hal ini menjadi salah satu penyebab meningkatnya permintaan jamur tiram dari tahun ke tahun di Indonesia khususnya di Sumatera Utara. Hal ini sejalan dengan semakin banyaknya masyarakat yang sadar akan pentingnya makanan kesehatan. Jamur tiram akan menjadi peluang usaha yang menggiurkan dan menjanjikan namun proses penanganan pasca panen menjadi penting dan perlu diperhatikan sebagai faktor penentu dalam proses budidaya jamur. Penanganan pascapanen yang tidak sesuai dengan prosedur yang seharusnya dapat menyebabkan rendahnya kualitas jamur tiram dan akibatnya menurunkan harga jual jamur tiram. Metode survei, sosialisasi, dan demonstrasi praktik langsung telah dilakukan oleh tim ABDIMAS. Komunitas ini bertujuan untuk memberikan peningkatan keterampilan petani dalam menangani proses pasca panen yang meliputi pemilahan, grading, pengemasan, penyimpanan, transportasi. Untuk memperpanjang masa simpan jamur tiram petani diberikan pengetahuan tentang cara pengawetan dengan proses pengeringan, pengawetan segar, pengalengan, teknik penggaraman dan pasta jamur.
Quality of Effective Microorganisms-based Liquid Fertilizer from Fermented Papaya Fruits (Carica papaya L.) Simarmata, Wilander; Yurnaliza, Yurnaliza; Nurwahyuni, Isnaini
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 8, No 2: Jurnal Pembelajaran Dan Biologi Nukleus Juli 2022
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v8i2.2733

Abstract

Papaya (Carica papaya L.) is one of the most popular fruits in the community and is generally only used as an ingredient for consumption in a fresh state. Papaya fruit production tends to be dynamic where sometimes the abundant amount of fruit may not necessarily be marketed directly. This causes the stock of papaya fruit during storage to rot and cannot be reused. This study aims to explore the potential of ripe papaya fruit to be processed as a substrate for the manufacture of liquid fertilizer using local microorganisms or effective microorganisms (EM). The quality of EM-based liquid fertilizer was determined based on the bacterial population density (CFU/mL) using the standard plate count (SPC) method on different growth media, then the levels of IAA and NPK in the applied fermented papaya fruit. The results showed the occurrence of nitrogen fixing bacteria, phosphate solubilizing bacteria and chitinolytic bacteria besides the cosmopolite bacteria. The optimum level of IAA in the fermented papaya fruit was EM + molasses (100%) while the NPK profile was still higher in the EM treatment without molasses.
Potential of Nematophagous Fungi from Kutalimbaru, North Sumatra, Indonesia, as Biological Control Agents to Manage Root Knot Nematodes, Meloidogyne incognita Simanjuntak, Wira Risa Lina; Hastuti, Liana Dwi Sri; Yurnaliza, Yurnaliza
Jurnal Proteksi Tanaman (Journal of Plant Protection) Vol. 9 No. 1 (2025): June 2025
Publisher : Department of Plant Protection, Faculty of Agriculture, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.9.1.26-37.2025

Abstract

Root-knot nematodes (RKN), especially Meloidogyne incognita, are one of the most damaging and widespread plant-parasitic nematodes (PPNs) in cultivated plants worldwide. The intensive application of chemical nematicides in controlling these pests raises environmental and ecological concerns, prompting the need for sustainable alternatives. This study aimed to isolate and evaluate the predatory potential of indigenous nematode-trapping fungi (NTF) from the rhizosphere soils of healthy tomato plants against M. incognita under in vitro conditions. Soil samples were processed using the soil sprinkle technique, and fungal isolates capable of forming traps were screened by exposing them to second-stage juvenile (J2) of M. incognita. This study isolated 20 nematophagous fungi that have antagonistic activity against M. incognita from the rhizosphere soil of tomato plants. Among these, four isolates were identified as nematode-trapping fungi, with TRK 04 showing the highest predation efficacy, followed by TRK 07, TRK 09, and TRK 16. All four isolates were identified as part of the Arthrobotrys genus. These findings highlight the potential of indigenous nematophagous fungi as sustainable biocontrol agents for managing root-knot nematodes. Their application could support the development of environmentally friendly agricultural practices and reduce reliance on chemical nematicides. Further, in vivo studies are recommended to validate their efficacy under field conditions.
Skrining Actinomycetes Penghasil L-asparginase dari Pantai Olo, Sumatera Utara dan Uji Aktivitas Enzim Hartini, Martha Yeni Sry; Yurnaliza; Hastuti, Liana Dwi Sri
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 3 (2025): September
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i3.17133

Abstract

This research aims to isolate actinomycetes that produce the enzyme L-asparaginase from Olo Beach and to determine the activity of the L-asparaginase enzyme produced. Actinomycetes producing the enzyme L-asparaginase were obtained through the following steps: isolation on SCA medium using the spread plate method; selection of L-asparaginase-producing actinomycetes on M-9 liquid medium with phenol red as a color indicator; production of L-asparaginase based on the principle of fermentation in production medium, followed by measurement of L-asparaginase activity and protein content. Protein content was determined using the Lowry method with Bovine Serum Albumin (BSA) as the standard. The data obtained were analyzed using ammonia and BSA standard curves. The results showed that 11 actinomycetes isolates from Olo Beach were capable of producing L-asparaginase. Qualitative selection showed a change in media color from yellow to pink, indicating the presence of L-asparaginase activity. Quantitatively, the highest L-asparaginase enzyme activity was 40.688 U/mL and the highest specific activity was 123,677 U/mg, found in isolate SPO 6. The lowest enzyme activity was 31,651 U/mL and the lowest specific activity was 25,874 U/mg. Specific activity is influenced by enzyme activity and protein content.
Co-Authors Adrian Hartanto Chairani Chairani Chairani Chairani Deddy Rusika Desy Christine Naibaho DWI SURYANTO Erman Munir Fachri Fauzi Hartini, Martha Yeni Sry Isnaini Nurwahyuni KIKI NURTJAHJA LANGKAH SEMBIRING Langkah Sembiring Liana Dwi Sri Hastuti Lubis, Nita A. Mayang Sari Yeanny Nita A. Lubis Retno Widia Sari Riska Annisa Putri Rusika, Deddy Saleha Hannum Sebastian Margino Sebastian Margino Simanjuntak, Wira Risa Lina Simarmata, Wilander Sinaga, Riyanto Sri Dwi Hastuti Waty, Syahdiana Wita E Tarigan