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Kajian Pustaka: Bakteri Asam Laktat Halotoleran: Prospek Pengembangan Metoda Baru Untuk Menekan Pembentukan Histamin pada Hasil Laut Ramona, Yan; Andriani, Luh Nyoman Ary Metta; Sukmaningsih, Anak Agung Sagung Alit
Bumi Lestari Journal of Environment Vol 24 No 2 (2024)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Abstract Histamine is an amine biogenic compound, frequently reported to cause poisoning among people who consume fishes with high level of histamine. Such compound is produced by histamine producing bacteria (HPB) belong to family of Enterobacteriaceae. Histidine decarboxylase produced by HPB plays a central role to convert free histidine in the fish meat into histamine, resulting in accumulation of histamine in the fish meat. Many efforts, including low temperature storage, ozone, and brine treatment) have been applied to cope with/prevent histamine accumulation in seafood products. However, those methods have some disadvantages, such as costly or have potential to change texture or structure of the products being preserved. In this review therefore, some aspects (including application of lactic acid bacteria (LAB) to control histamine production, characteristics of LAB required, tolerance of LAB to high level of salt, and the role of LAB to suppress HPB growth, and suppression of histamine production) are comprehensively reviewed. All information was extracted from related scientific articles published in the last decade. Keywords: Allergy; Biogenic agent; Histidine decarboxylase; Lactic acid bacteria; Tuna
SOSIALISASI DAN PELATIHAN PENANAMAN MANGROVE DI KAMPOENG KEPITING KELURAHAN TUBAN, KECAMATAN KUTA, KABUPATEN BADUNG-BALI I Wayan Suanda; IBG Darmayasa; A.A. Ketut Darmadi; Yan Ramona
Jurnal Pengabdian Kepada Masyarakat Widya Mahadi Vol. 4 No. 2 (2024): Juni 2024
Publisher : LP3M Universitas PGRI Mahadewa Indonesia

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Abstract

Tuban Village, Kuta District, Badung Regency has quite a wide coastline and is the estuary of several rivers in Badung Regency. Geologically, the beach consists of alluvium deposits composed of pebbles, gravel, sand, silt and clay resulting from river water and sea water sedimentation processes, which are very good for the growth of mangroves. Mangroves are not only a collection of plants, but are one of the natural resources that can provide benefits to the human life and the lives of the marine biota. This condition did not last long due to rapid development causing the conversion of coastal land for fisheries cultivation, settlements and industry which had an adverse impact on the mangrove ecosystem. The death of mangroves and depletion of living habitat resulted in a decreasing mangrove population. The existence and sustainable of the mangrove forests need to be maintained through local community involvement in the form of Kampoeng Kepiting ecotourism to gain economic value. The mangrove forest rehabilitation program takes the form of planting and maintenance as one of the efforts to restore the mangrove ecosystem in Kampoeng Kepiting, Tuban Village, Kuta District.
THE EFFECTS OF LACTIC ACID BACTERIA GROWTH INHIBITORS OF STAPHYLOCOCCUS EPIDERMIDIS SUPPLEMENTATION ON THE QUALITY OF ANTI-MICROBIAL LOTION Zulfa, Rozifatul; Ramona, Yan; Arpiwi, Ni Luh
Acitya Wisesa: Journal of Multidisciplinary Research Vol. 3 Issue 1 (2024)
Publisher : jfpublisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56943/jmr.v3i1.581

Abstract

Staphylococcus epidermidis infections of the skin can cause boils, itching and long-lasting sores. Currently, around 75% to 90% of S. epidermidis infection cases are resistant to the antibiotic methicillin. Thus, this becomes a concern in the health sector. This research aims to discover a new method to treat S. epidermidis infection by using lactic acid bacteria as its opponent, so that the use of antibiotics can be reduced. The physical test includes confirmation of Lactic Acid Bacteria (LAB), inhibition test of lab on S. epidermidis, lotion formulation, organoleptic and homogeneity test of lotion, lotion hedonic test, LAB total plate count test in lotion, and data analysis using Microsoft Excel, Statistical Program Service Solution (SPSS), and ANOVA test. Lactic acid bacteria isolates were obtained from previous research stocks and tested for their ability to inhibit S. epidermidis in vitro. These lactic acid bacteria were added to the lotion. The favorability level of consumers to the lotion was also tested. The results indicated that lactic acid bacteria were able to inhibit the growth of S. epidermidis and remained effective until the seventh day. In addition, respondents provided a positive response to the physical quality of the lotion that contained lactic acid bacteria.
Viabilitas probiotik Lacticaseibacillus rhamnosus SKG34 pada sari buah terung belanda (Solanum betaceum Cav.) terfermentasi selama penyimpanan pada suhu dingin Nocianitri, Komang Ayu; Pratiwi, I Desak Putu Kartika; Wulandari, Kristina; Ramona, Yan; Sujaya, I Nengah
AGROINTEK Vol 19, No 3 (2025)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v19i3.26535

Abstract

Tamarillo (Solanum betaceum Cav.) is a tropical fruit that has the potential to be developed into functional food in the form of fruit juice containing probiotics. In order to develop the probiotic-containing product, the suitability of fruit juice to support the growth of probiotics and the viability of probiotics during the fermentation and storage processes are the prime concerns. Therefore, this study aims to determine the viability of the local probiotic Lacticaseibacillus rhamnosus SKG34 and the characteristics of fermented Tamarillo juice during storage at 4oC. Fermented tamarillo juice containing L. rhamnosus SKG34 is produced by fermenting Tamarillo juice with L. rhamnosus SKG34 and then stored at a temperature of ±4oC for 30 days. Population of L. rhamnosus SKG34, total sugar, total acid, pH, vitamin C, antioxidant capacity, and sensory characteristics were determined at 0, 5, 10, 15, 20, 25, and 30 days. The results showed that the probiotic L. rhamnosus SKG34 in fermented tamarillo juice was able to survive for 30 days with a population of 2.58 x 1010 CFU/ml from the initial population of 9.54 x 1010 CFU/ml. However, considering that chemical characteristics and other functional properties also influence the acceptability of fermented tamarillo juice, the optimal storage time is 20 days at 4oC. Under this condition, the fermented tamarillo juice containing 3.6 x 1010 CFU/ ml of L. rhamnosus SKG34; 11.23% sugars; total acid 0.98% acids; pH 3.44; 31.76 mg/100 ml vitamin C; and 4,725 GAEC/100 ml of antioxidant capacity, with favorable sensory levels.
THE THE EFFICACY OF BACTERIAL AND FUNGAL ANTAGONIST SUSPENSIONS IN CONTROLLING FOLIAR MILDEW DISEASE IN ZUCCHINI PLANTS: - Ramona, Yan; A. Line, Martin; Septiari, I Gusti Ayu Agung; Darmayasa, Ida Bagus Gede; Agung Panji Dwipayana, I Dewa; Shetty, Kalidas
BIOTROPIA Vol. 32 No. 2 (2025): BIOTROPIA Vol. 32 No. 2 August 2025
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2025.32.2.2448

Abstract

ARTICLE HIGLIGHTS- Diverse microbial antagonists can be used as alternatives to control foliar disease - Microbial agents offer zucchini protection against downy mildew causing microbes- Biocontrol agents effectively control mildew infection in zucchini plants- Diverse microbial antagonists have potential to control foliar disease in zucchini - New bio-based strategy supports sustainable crop disease management- Diverse microbial antagonists are promising for controlling mildew in zucchiniABSTRACTDowny mildew is recognized as a major constraint in zucchini production, caused by obligate fungal-like pathogens that thrive under humid conditions. In this study, the efficacy of selected bacterial (Lysobacter antibioticus Bali G, Pseudomonas corrugata SAJ6) and fungal (Trichoderma sp. Td22) antagonists was evaluated for the management of this foliar disease on zucchini plants as an alternative to chemical fungicides. The efficacy of these bacterial and fungal antagonists against a suspected downy mildew pathogen was assessed on zucchini leaves in a glasshouse. It was found that the antagonists provided 22 - 83% protection (P < 0.05) against the pathogen two weeks after application. However, the level of protection declined over time, with 46 - 60% of leaves infected five weeks after pathogen exposure, regardless of treatment. The combination of Trichoderma sp. Td22, the most effective agent, with either Lysobacter antibioticus Bali G, Pseudomonas corrugata SAJ6, or both, was observed to reduce its overall effectiveness. Survival of the biological agents on leaf surfaces was low, although prior research has indicated that survival may not be essential for sustained disease control. Further investigation is required to determine the potential role of these agents in inducing systemic acquired resistance in crops such as grapes and poppies. For commercial application, repeated treatments may be necessary to maintain disease management. Notably, the protection provided by Trichoderma sp. Td22 was found to be comparable to that of chemical treatments, representing a promising step toward more sustainable agricultural practices.
Korosi Mikroba pada Infrastruktur Logam: Tantangan dan Strategi Pengelolaan Berkelanjutan Ciawi, Yenni; Ramona, Yan
Nata Palemahan: Journal of Environmental Engineering Innovations Vol. 1 No. 2 (2024)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/natapalemahan.v1i2.5652

Abstract

Korosi mikroba (MIC, microbiologically influenced corrosion) merupakan masalah pelik di berbagai industri, khususnya pada sektor minyak dan gas, infrastruktur kelautan, dan pengolahan air, karena aktivitas mikroba mempercepat degradasi permukaan logam secara signifikan. MIC umumnya oleh bakteri, arkea, dan jamur yang membentuk biofilm pada logam, dan menyebabkan reaksi elektrokimia lokal yang memicu korosi. Tinjauan ini berfokus pada mikroorganisme utama yang terlibat dalam MIC, seperti bakteri pereduksi sulfat (SRB, sulfate-reducing bacteria), bakteri pengoksidasi besi (IOB, iron-oxidizing bacteria), dan metanogen, serta menjelaskan bagaimana faktor lingkungan, seperti ketersediaan oksigen, konsentrasi nutrisi, pH, suhu, dan salinitas, mendukung pertumbuhan mikroba dan korosi logam. Berbagai metode deteksi MIC dievaluasi, seperti analisis mikrobiologi, metode elektrokimia seperti spektroskopi impedansi elektrokimia (EIS, electrochemical impedance spectroscopy), metode uji non-destruktif, serta teknologi sensor real-time. Selain itu, strategi mitigasi MIC, seperti penggunaan material tahan korosi, pelapis antimikroba, biosida, dan sistem perlindungan katodik, dibahas secara rinci. Teknologi baru seperti pelapis pintar (self-healing), nanomaterial, dan sistem bioelektrokimia juga disebutkan sebagai solusi menjanjikan untuk pengelolaan MIC yang lebih efektif dan berkelanjutan. Dengan mengintegrasikan metode deteksi dan mitigasi yang canggih, industri dapat melindungi infrastruktur penting dari dampak jangka panjang korosi mikroba dan mengurangi secara signifikan biaya akibat kerusakan oleh MIC.
The POTENTIAL OF LACTIC ACID BACTERIA, ISOLATED FROM SEVERAL SOURCES, TO INHIBIT THE GROWTH OF Candida albicans ATCC10231 Ramona, Yan; Darmayasa, Ida Bagus Gede; Dharmawan, Komang; Sudaryatma, Putu Eka; Teriyani, Ni Made; Batho, Yanuarius Felix; Inabuy, Fainmarinat Selviani
BIOTROPIA Vol. 31 No. 2 (2024): BIOTROPIA Vol. 31 No. 2 August 2024
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2024.31.2.1868

Abstract

ARTICLE HIGHLIGHTS- Lactic acid bacteria have potential to control candidiasis or Candida albicans. - The novelty of this study is to advance the potential of lactic acid bacteria to control candidiasis infection in human, with a view to develop novel LAB-based probiotic candidates with capability to inhibit/prevent infection by C. albicans, the causative agent of candidiasis.ABSTRACTThe main aims of this research were to isolate and identify potential lactic acid bacteria (LAB) inhibitory to Candida albicans. The LAB sources were kimchi, honey and vaginal secrete of healthy women. They were isolated with a view to develop a novel alternative method with reduced use of antifungal agents in the treatment of patients infected by such fungal pathogen. Isolation of the LABs was conducted by applying dilution spread method on de Mann Rogosa Sharpe agar (MRSA) medium supplemented with bromo cresol purple (BCP) indicator. Once purified, they were tested for antagonism against C. albicans in dual culture assays. LAB isolates that showed significant inhibition against the pathogen were identified using 16s rDNA sequences and their sequences were aligned with those of known sequences deposited at the Gene Bank (http://www.ncbi.nlm.nih.gov). The results showed that 46 among more than 100 LABs isolated in this study significantly inhibited the growth of C. albicans in the in vitro dual culture assays, and all showed resistance property to antifungal agent (fluconazole). This indicated that they all have potential to be synergically applied with reduced use of fluconazole in the therapy. The most potential isolates (10 isolates) were closely related to three LAB species, namely Lactobacillus paracasei, Lacticaseibacillus paracasei, and Pediococcus pentosaceus, based on their 16s rDNA sequence similarities with those deposited in the GenBank.
The THE POTENCY OF CINNAMON (Cinnamomum burmanni Blume) LEAF EXTRACT AS A BIOPRESERVATIVE AGENT FOR FOOD SAFETY OF SATE LILIT: - Darmayasa, Ida Bagus Gede; Ramona, Yan; Darmadi, Anak Agung Ketut; Suanda, I Wayan; Hani, Ni Luh; Shetty, Kalidas
BIOTROPIA Vol. 31 No. 2 (2024): BIOTROPIA Vol. 31 No. 2 August 2024
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2024.31.2.2165

Abstract

ARTICLE HIGLIGHTS- Cinnamon leaf extract combats E. coli in traditional Balinese food.- Natural preservative reduces harmful pathogens in sate lilit.- Cinnamon extract offers a safer alternative to synthetic preservatives.- Active compounds in cinnamon leaves inhibit bacterial growth.- Effective biopreservative for enhancing food safety and quality. ABSTRACTEscherichia coli O157:H7 contamination of the meat used in preparing sate lilit, a favorite traditional food in Bali, Indonesia, has been a great concern for both local people and foreigners. Although C. burmanni has been included in its spice ingredients, active compounds that play a significant role in this pathogen have limitedly been elucidated. The main objectives of this research were to investigate the potency of this plant to control contaminants and elucidate possible compounds that prevent such contaminants by applying the disk diffusion method and LCMS analysis, respectively. The results showed that the leaf extract of this plant inhibited the in vitro growth of E. coli O157:7, with minimal inhibitory concentration (MIC) and LC50 values of 4% and 2.59%, respectively. The LCMS analysis chromatogram showed that the plant extract's most active fraction produced nine peaks, representing nine possible active compounds. Among those, three compounds (Azoxystrobin, Stigmatellin Y, and 2-arachidonoyl glycerol) were suspected of contributing to control contamination, especially by E. coli O157:H7.
Potensi Ekstrak Etanol Daun Serai Wangi (Cymbopogon nardus (L.) Randle) Dalam Menghambat Pertumbuhan In Vitro Bakteri Staphylococcus aureus Dan Escherichia coli Yuliya Ayu Lestari; Yan Ramona; Fainmarinat Selviani Inabuy
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.p9

Abstract

Serai wangi (Cymbopogon nardus (L.) Randle) merupakan tanaman yang umum digunakan masyarakat untuk mengobati eksim, diare, batuk pilek, serta sebagai obat kumur, karena tanaman ini memiliki aktivitas antimikroba. Penelitian ini bertujuan untuk menentukan nilai Minimum Inhibitory Concentration (MIC) dan Lethal Concentration 50% (LC50) dari ekstrak etanol daunnya pada bakteri Staphylococcus aureus dan Escherichia coli. Selain itu, golongan senyawa kimia yang terkandung di dalam ekstrak daun serai wangi juga dielusidasi. Penelitian ini menggunakan metode sumur difusi dan menguji lima konsentrasi ekstrak daun serai wangi (10, 20, 30, 40, 50% b/v), etanol 96% dan Ciprofloxacin masing-masing berperan sebagai kontrol negatif dan kontrol positif. Nilai LC50 dihitung dari persamaan regresi yang diperoleh dari kurva yang menunjukkan hubungan antara konsentrasi dengan kerapatan sel mikroba uji. Hasil penelitian menunjukkan bahwa nilai MIC ekstrak terhadap S. aureus dan E. coli adalah 2%. Konsentrasi paling efektif dalam menghambat pertumbuhan S. aureus adalah 10% dengan diameter hambatan sebesar 12,4±0,52mm, dan terhadap E. coli adalah 30% dengan diameter hambatan sebesar 10,4±0,65 mm. Nilai LC50 S. aureus dan E. coli berturut-turut sebesar 4,71% (b/v) dan 3,35% (b/v). Golongan senyawa kimia yang terkandung dalam ekstrak etanol daun serai wangi adalah flavonoid, polifenol, alkaloid, steroid, dan tanin. Kata kunci: Daya hambat, sumur difusi, konsentrasi, fitokimia
Potensi Ekstrak Etanol Daun Serai Wangi (Cymbopogon nardus (L.) Randle) Dalam Menghambat Pertumbuhan In Vitro Bakteri Staphylococcus aureus Dan Escherichia coli Yuliya Ayu Lestari; Yan Ramona; Fainmarinat Selviani Inabuy
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.p9

Abstract

Serai wangi (Cymbopogon nardus (L.) Randle) merupakan tanaman yang umum digunakan masyarakat untuk mengobati eksim, diare, batuk pilek, serta sebagai obat kumur, karena tanaman ini memiliki aktivitas antimikroba. Penelitian ini bertujuan untuk menentukan nilai Minimum Inhibitory Concentration (MIC) dan Lethal Concentration 50% (LC50) dari ekstrak etanol daunnya pada bakteri Staphylococcus aureus dan Escherichia coli. Selain itu, golongan senyawa kimia yang terkandung di dalam ekstrak daun serai wangi juga dielusidasi. Penelitian ini menggunakan metode sumur difusi dan menguji lima konsentrasi ekstrak daun serai wangi (10, 20, 30, 40, 50% b/v), etanol 96% dan Ciprofloxacin masing-masing berperan sebagai kontrol negatif dan kontrol positif. Nilai LC50 dihitung dari persamaan regresi yang diperoleh dari kurva yang menunjukkan hubungan antara konsentrasi dengan kerapatan sel mikroba uji. Hasil penelitian menunjukkan bahwa nilai MIC ekstrak terhadap S. aureus dan E. coli adalah 2%. Konsentrasi paling efektif dalam menghambat pertumbuhan S. aureus adalah 10% dengan diameter hambatan sebesar 12,4±0,52mm, dan terhadap E. coli adalah 30% dengan diameter hambatan sebesar 10,4±0,65 mm. Nilai LC50 S. aureus dan E. coli berturut-turut sebesar 4,71% (b/v) dan 3,35% (b/v). Golongan senyawa kimia yang terkandung dalam ekstrak etanol daun serai wangi adalah flavonoid, polifenol, alkaloid, steroid, dan tanin. Kata kunci: Daya hambat, sumur difusi, konsentrasi, fitokimia
Co-Authors A. Line, Martin A.A. Ketut Darmadi Agestiawan, I. G. A. M. Agung Panji Dwipayana, I Dewa Alayna Himawan Anak Agung Gede Indraningrat Anak Agung Ketut Darmadi Anak Agung Ngurah Nara-Kusuma Ananda Sri Phartiswari Andriani, Luh Nyoman Ary Metta Anissa Maria Hidayati Ariwathi, Ni Luh Putu Ayu Amelia Bagas Susilo Batho, Yanuarius Felix Cok. Istri Dewiyani Cakrawati Cokorda Istri Sri Arisanti Dandy Bimantara Dewa Ayu Andriastini Dewa Ayu Swastini Dewantara, Putu Satrio Jhanardana Diah Kharismawati Djereng Diarsa, Made Okta Hapsari Putri Dwipayana, I Dewa Agung Panji Esti Arisetya Dewi Fainmarinat Selviani Inabuy Fainmarinat Selviani Inabuy Fernando Putra Flavia Fionessa Falenda Shanzet Fukuda Kenji Gabrina Tonyes, Silvia Gusti Ayu Dianti Violentina Gustu Widi Putra Hani, Ni Luh Helda Thorikul Affan I D.P. Kartika Pratiwi I Dewa Gede Cahyadi Kusuma I Dewa Made Sukrama I G. A. Widagda I Gusti Agung Gde Bayu Wirama I Gusti Ngurah Jemmy Anton Prasetya I Gusti Ngurah Kade Mahardika I Ketut Junitha I Made Oka Adi Parwata I Made Saka Wijaya I N.K. Widjaja I Nengah Sujaya I Putu Aditya Prayoga I Putu Oka Suartama I W BUDIARSA SUYASA I Wayan Suanda I Wayan Suardana I. M. A Sasmitha I.B. Oka Suyasa I.D.P.K. Pratiwi IBG Darmayasa Ida Ayu Ketut Ariningsih Ida Ayu Putu Suryanti Ida Ayu Sri Sinca Maha Uni Ida Bagus Gede Darmayasa Ida Bagus Gede Darmayasa Ida Bagus Made Suaskara Inabuy, Fainmarinat selviani Irma Damayanti K.R Suciptha Kadek Wegi Kurnilia KOMANG AYU NOCIANITRI Komang Dharmawan Kusuma, I Dewa Gede Cahyadi Lastini, Ni Putu Bintang Diah Meitini Proborini Wahyuni N. N. Rupiasi N.G.A Manik Ermayanti N.W.A. Utami Nadia Khairunnisa Nadya Treesna Wulansari Ni LUH ARPIWI Ni Luh Made Ema Juliasari Ni Luh Suriani Ni Made Susilawati Ni Made Teriyani Ni Made Utami Dwipayanti Ni Nengah Dwi Fatmawati Ni Nyoman Rupiasih Ni Putu Adriani Astiti Ni Putu Desy Aryantini Ni Putu Eka Leliqia Ni Putu Indiani Sahaning Karna Ni Putu Linda Laksmiani Ni Putu Suariani Ni Putu Widarini Ni Putu Widiantari Ni Wayan Eka Putri Gayatri Kastawa Ni Wayan Nursini NYOMAN SEMADI ANTARA Pande Gde Sasmita Julyantoro Pande Putu Ayu Sukmawati Putu Eka Sudaryatma Putu Rima Sintyadewi Retno Kawuri SANG KETUT SUDIRGA Satwika, Pande Gede Putra Sentot Joko Raharjo Septiari, I Gusti Ayu Agung Shetty, Kalidas Sri Wahyuni Sumartin N.W.E. Tadashu Urashima Teriyani, Ni Made Viviandari, I D. A. A Wayan Redi Aryanta Wulandari, Kristina YAYA RUKAYADI Yenni Ciawi Yoshitake Orikasa Yuji Oda Yuliastuti, Dwi Ariani Yulidia Iriani Yulidia Iriani Yuliya Ayu Lestari Yustiantara, Putu Sanna Zulfa, Rozifatul