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All Journal Jurnal Kimia (Journal of Chemistry) CHEMISTRY PROGRESS JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA SIMBIOSIS Metamorfosa: Journal of Biological Science Open Access DRIVERset
Dwi Ariani Yulihastuti
Program Studi Biologi, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Udayana, Kampus Bukit Jimbaran, Badung, Bali
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry

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BIOSORPSI Cr(III) PADA BIOSORBENT SERAT SABUT KELAPA HIJAU TERAKTIVASI ASAM NITRAT Sudiarta, I Wayan; Diantariani, Ni Putu; Yulihastuti, Dwi Ariani
CHEMISTRY PROGRESS Vol 5, No 1 (2012)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.5.1.2012.650

Abstract

Sudiarta dkk., 2012. Biosorpsi Cr(III) pada biosorbent serat sabut kelapa hijau teraktivasi asam nitrat. Telah dilakukan penelitian biosorpsi Cr(III) pada biosorben serat sabut kelapa hijau (cocos mucifera) teraktivasiasam nitrat. Penelitian ini meliputi penentuan rasio optimum asam nitrat:biosorben dalam aktivasi, penentuankeasaman permukaan biosorben teraktivasi asam nitrat, penentuan kondisi optimum biosorpsi Cr(III) padabiosorben teraktivasi asam yang meliputi pH optimum dan waktu kontak optimum, penentuan isoterm dankapasitas biosorpsi Cr(III) pada biosorben teraktivasi asam nitrat. Hasil penelitian menunjukkan bahwa aktivasibiosorben optimum terjadi pada rasio mmol asam nitrat : gram biosorben = 5 : 1. Keasaman permukaanbiosorben teraktivasi asam nitrat adalah 9,94± 0,33 mmol/g dan biosorben tanpa aktivasi adalah 5,3 ± 0,01mmol/g. pH optimum biosorpsi Cr(III) pada masing-masing biosorben adalah 3 dan waktu kontak optimumbiosorpsi Cr(III) pada biosorben teraktivasi asam nitrat adalah 60 menit dan biosorben tanpa aktivasi adalah120 menit. Kapasitas biosorpsi Cr(III) pada biosorben teraktivasi asam nitrat dan tanpa aktivasi adalah 13,74mg/g dan 11,91 mg/g.Kata kunci : biosorpsi, serat sabut kelapa, aktivasi, Cr (III), kapasitas biosorpsiSudiarta et al., 2012. Chromium (III) biosorption on nitric acid-biosorbent activated green coco fibre. Studies on biosorption of Cr (III) on nitric acid-biosorbent activated of green coco fibre (Cocos mucifera) had been carried out. These studies included determination of the optimum ratio of nitric acid: biosorben inactivation, the determination of surface acidity of nitric acid-biosorbent activated, determination of the optimumconditions of biosorption Cr(III) on activated biosorbnet that includes the optimum pH and the optimum contacttime, determinatiion of the isotherm and capacity biosorpsi of Cr (III ) on nitric acid-biosorbent activated.Theresults show that the activation occurs at the optimum ratio of mmol nitric acid: gram biosorbent was 5: 1. Thesurface acidity of nitric acid-biosorbent activated was 9.94 ± 0.33 mmol / g and unactivated biosorbent was 5.3± 0.01 mmol / g. The optimum pH biosorption of Cr(III) on each biosorbent is 3 and the optimum contact timebiosorption of Cr(III) on nitric acid-biosorbent activated was 60 minutes and unactivated biosorbent was 120minutes. The capacity biosorption of Cr(III) on nitric acid-biosorbent activated and unactivated biosorbnet were13.74 mg/g and 11.91 mg/g.Keywords : biosorption, coconut fibre, activation, Cr(III), capacity biosoprtion
BIOSORPSI KROMIUM(VI) PADA SERAT SABUT KELAPA HIJAU (Cocos nucifera) I Wayan Sudiarta; Dwi Ariani Yulihastuti
Jurnal Kimia (Journal of Chemistry) Vol. 4, No. 2 Juli 2010
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (140.095 KB)

Abstract

Studies on biosorption of chromium (VI) on green coconut coir fibre (Cocos nucifera) biosorbent have beencarried out. These studies included determination of biosorben acidity, optimum pH, contact time of biosorption,isoterm and biosorption capacity, and interaction type between chromium (VI) and green coconut coir fibre (Cocosnucifera) biosorben Mechanisms of interaction were determined through study on desorption chromium (VI) of thepreviously adsorbed using aquadest, 1 M HCl and 0,05 M Na2EDTA.The result showed that the total acidity of green coconut coir fibre biosorbent was 8,7158 ± 0,2569 mmol/g,the optimum pH was 2, and the contact time was 120 minute. Biosorption capacity of green coconut coir fibre (Cocosnucifera) to chromium (VI) was 12,6152 mg/g. Interaction type that occurred between chromium (VI) ion and greencoconut coir fibre biosorben (Cocos nucifera) were hydrogen bond, Van der Walls bond, cation exchange andcomplex bond.
In vitro assessment of antifungal activity of cinnamon leaves extract against the Colletotrichum sp. causes of anthracnose on tomato Sudirga, Sang Ketut; Darmadi, Anak Agung Ketut; Wijaya, I Made Saka; Yulihastuti, Dwi Ariani
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 24 No. 2 (2024): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.224284-294

Abstract

Tomato is a horticultural plant widely cultivated in Bali. Over the three years, the productivity and quality of this plant have tended to decrease due to pathogen-derived diseases, such as anthracnose caused by Colletotrichum sp. Until recently, control of this pathogenic fungus has relied on chemical-based fungicides, which lead to many long-term complications, including pathogen resistance, environmental pollution, the extinction of non-target microorganisms, and negative impacts on human health. Therefore, alternative methods for plant disease control are urgently needed to combat these pathogen attacks. The use of plant-derived active compounds has been intensively researched worldwide as a more environmentally friendly alternative. The main objective of this research was to investigate the effectiveness of Cinnamomum burmanii acetone extract in inhibiting the growth of Colletotrichum sp., the causative agent of anthracnose in tomatoes, through an in vitro approach. A non-factorial randomized complete design was applied in the experiment. The results showed that the crude extract of cinnamon leaves inhibited the growth of the Colletotrichum sp. with an MIC value of 0.9%, an inhibition zone of 2.55 mm, and an optimal inhibitory concentration of 2%, producing an inhibition zone of 11.10 mm. A GC-MS analysis was conducted to identify the active compounds in the cinnamon leaf extract. Sixteen active compounds were identified, nine of which are known to have antimicrobial activity.
KUALITAS SPERMATOZOA DAN BERAT ORGAN REPRODUKSI MENCIT (Mus musculus) SETELAH PEMBERIAN EKSTRAK BIJI KLABET (Trigonella foenum-graecum L.) Maulidya Rosa Putri Utama; Dwi Ariani Yulihastuti; Sang Ketut Sudirga
SIMBIOSIS Simbiosis Volume 12 No. 1 2024
Publisher : Program Studi Biologi Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JSIMBIOSIS.2024.v12.i01.p04

Abstract

Indonesia is one of the countries known to have the highest biodiversity in the world. There are 18 types of herbs that have the potential as antifertility in men, one of which is the klabet plant or fenugreek. Klabet is believed by ordinary people to have properties to increase the production and quality of spermatozoa. According to previous research klabet has toxic effects that can inhibit fertility due to the content of phytochemicals in it. This study aims to determine the effect of fenugreek seed extract on the quality of spermatozoa and the weight of the reproductive organs of mice. The mice used were 20 male mice weighing about 25-30 grams divided into 4 treatments namely control (P0), 56 mg/kgBB (P1), 112 mg/kgBB (P2), 168 mg/kgBB (P3) with 5 repetitions. Giving treatment for 24 days. The method used is RAL (Complete Randomized Design) and the resulting data is analyzed using ANOVA. The parameters studied were testicular weight, epididymis weight, motility, morphology and number of male mouse spermatozoa. The results showed that there was a real difference (p≤0.05) between the control and treatment of the klabet seed extract on the quality of spermatozoa and the weight of the testicle but not significantly different (p≥0.05) to the weight of the epididyimis. Concentration of mice spermatozoa decreased by 10.60%, progressive spermatozoa motility decreased by 55.61%, nomal morphology decreased by 57.92%, while testicular weight decreased by 38.46%. The most effective dose of fenugreek seed extract used as an antifertility agent was a dose of 168 mg/kgBW (P3).
POLA PERTUMBUHAN SISWA DI SD LABORATORIUM UNDIKSHA SINGARAJA DAN SDN 3 PANJI, KABUPATEN BULELENG, BALI Ni Nyoman Dian Anjani; Ni Made Rai Suarni; Dwi Ariani Yulihastuti
SIMBIOSIS Simbiosis Volume 13 No. 1 2025
Publisher : Program Studi Biologi Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JSIMBIOSIS.2025.v13.i04.

Abstract

Growth is a change that occurs quantitatively that can be observed in human physique, such as height, and body weight. The purpose of this research was to determine the growth patterns of student at Elementary School (SD) LAB Undiksha Singaraja and SDN 3 Panji. The research method used purposive sampling, carried out at SD LAB Undiksha Singaraja and SDN 3 Panji with 60 probands aged 10-12 years in January 2023. Observations were made on student height, student weight, student Body Mass Index (BMI), student age at SD LAB Undiksha Singaraja and SDN 3 Panji. Data analysis used the T Test. The results of statistical analysis show that there are insignificant differences in the growth patterns of students at SDN 3 Panji and SD LAB Undiksha Singaraja. The research results showed that the average height and weight of students at SDN 3 Panji was lower than at SD LAB Undiksha Singaraja. The majority of students' BMI at SDN 3 Panji is in the underweight category, namely 60% for boys and 66.67% for girls. The majority of students' BMI at SD LAB Undiksha Singaraja is in the normal category, namely 46.67% for boys and 53.33% for girls. Keywords: Body Mass Index, Panji, growth, Undiksha
Deteksi Cemaran Total Bakteri, Coliform, Escherichia coli, dan Salmonella sp. pada Daging Ayam Broiler (Gallus domesticus) yang Dijual di Beberapa Pasar Daerah Kabupaten Badung, Bali Kadek Aryndha Sukma Prabaswari; Retno Kawuri; Dwi Ariani Yulihastuti
Metamorfosa: Journal of Biological Sciences Vol. 11 No. 2 (2024)
Publisher : Program Magister Ilmu Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2024.v11.i02.p4

Abstract

Chicken meat is a source of animal protein which is easily damaged due to its high water content. Chicken meat that is bought and sold could potentially become a place for the growth of bacteria that cause foodborne diseases.This study aims to determine total bacterial contamination, Coliform, Escherichia coli, and Salmonella sp. on broiler chicken meat in Badung Regency and determine the suitability of broiler chicken meat samples following food safety standards. Samples were taken using a purposive sampling method in six sub-districts in Badung Regency, namely Petang, Abiansemal, Mengwi, North Kuta, Kuta and South Kuta sub-districts at traditional markets that sell broiler chicken meat. The samples were tested using the pour plate and streak platting method. Parameters tested include Total Plate Number (ALT), Coliform, Escherichia coli, and Salmonella sp. on broiler chicken meat samples. Coliform and Escherichia coli bacteria were detected using Petrifilm ready-to-use media, while Salmonella sp. tested on selective Salmonella-Shigella Agar (SSA) media and catalase test and Gram staining. The research result showed that the contamination rates in broiler chicken breast meat were: Total Plate Number (ALT) 105 CFU/g to 107 CFU/g; Coliform and Escherichia coli 101 CFU/g to 104 CFU/g; Salmonella sp. positive in all samples, so that the samples tested did not meet the safety quality requirements for chicken meat according to SNI 3924: 2009.
Deteksi Cemaran Total Bakteri, Coliform, Escherichia coli, dan Salmonella sp. pada Daging Ayam Broiler (Gallus domesticus) yang Dijual di Beberapa Pasar Daerah Kabupaten Badung, Bali Kadek Aryndha Sukma Prabaswari; Retno Kawuri; Dwi Ariani Yulihastuti
Metamorfosa: Journal of Biological Sciences Vol. 11 No. 2 (2024)
Publisher : Program Magister Ilmu Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2024.v11.i02.p4

Abstract

Chicken meat is a source of animal protein which is easily damaged due to its high water content. Chicken meat that is bought and sold could potentially become a place for the growth of bacteria that cause foodborne diseases.This study aims to determine total bacterial contamination, Coliform, Escherichia coli, and Salmonella sp. on broiler chicken meat in Badung Regency and determine the suitability of broiler chicken meat samples following food safety standards. Samples were taken using a purposive sampling method in six sub-districts in Badung Regency, namely Petang, Abiansemal, Mengwi, North Kuta, Kuta and South Kuta sub-districts at traditional markets that sell broiler chicken meat. The samples were tested using the pour plate and streak platting method. Parameters tested include Total Plate Number (ALT), Coliform, Escherichia coli, and Salmonella sp. on broiler chicken meat samples. Coliform and Escherichia coli bacteria were detected using Petrifilm ready-to-use media, while Salmonella sp. tested on selective Salmonella-Shigella Agar (SSA) media and catalase test and Gram staining. The research result showed that the contamination rates in broiler chicken breast meat were: Total Plate Number (ALT) 105 CFU/g to 107 CFU/g; Coliform and Escherichia coli 101 CFU/g to 104 CFU/g; Salmonella sp. positive in all samples, so that the samples tested did not meet the safety quality requirements for chicken meat according to SNI 3924: 2009.
DETEKSI CEMARAN TOTAL BAKTERI DAN IDENTIFIKASI Salmonella sp. PADA TELUR GARAM YANG DIJUAL DI PASAR TRADISIONAL DI DENPASAR BALI : DETECTION OF TOTAL BACTERIAL CONTAMINATION AND IDENTIFICATION OF Salmonella sp. ON SALT EGGS SOLD AT THE TRADITIONAL MARKET IN DENPASAR BALI Dimung, Marieta Demarilac; Parwanayoni, Ni Made Susun; Yulihastuti, Dwi Ariani
SIMBIOSIS Simbiosis Volume 13 No. 2 2025
Publisher : Program Studi Biologi Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JSIMBIOSIS.2025.v13.i02.p07

Abstract

ABSTRACT Salt eggs are a type of egg that undergoes a five-hour boiling process and then coated with salt. Eggs are subject to damage, both from external sources and during microbial development. One of the microorganisms that contaminate eggs is Salmonella sp. This study aims to identify Salmonella sp. and examine the detection of total bacterial contamination in salted eggs sold in traditional markets in Denpasar Bali. Samples of this study were taken from 10 traditional markets located in Denpasar Bali randomly and three times repeated. The type of research conducted is descriptive research which describes the total bacteria in salt eggs and the presence or absence of Salmonella sp. The data collected is displayed using tables, figures, and in-depth explanations based on the findings of relevant literature reviews. Based on the results of the Alt test, it shows that at a dilution of 10-3 salt egg samples from Peguyangan and Kertha Boga Pemogan markets have more than 300 colonies (TBUD). This number still meets the SNI requirements, which is a maximum of 1 x 105 CFU. The results of the Salmonella sp. bacteria detection test are that all salt egg samples are free of Salmonella sp. bacteria.
Co-Authors Anak Agung Ketut Darmadi Dimung, Marieta Demarilac Ezra Oktavia Ambarita I Ketut Junitha I Komang Angga Kristiawan I Wayan Sudiarta IRIANI SETYAWATI Ivani Dayanara Kadek Aryndha Sukma Prabaswari Kadek Mardika Maulidya Rosa Putri Utama Ni Komang Lisna Putri Ni LUH ARPIWI Ni Luh Made Yuli Indra Yanti Ni Luh Suriani Ni Made Estriana Pranadya Ni Made Rai Suarni Ni Made Rai Suarni Ni Made Suartini Ni Nyoman Dian Anjani Ni Putu Adriani Astiti Ni Putu Diantariani Ni Wayan Sudatri Parwanayoni, Ni Made Susun Putri Arie Prasetyoningrum Putu Anjarina Retno Kawuri Ruth Ellisa Christiani SANG KETUT SUDIRGA SANG KETUT SUDIRGA Wijaya, I Made Saka