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"Aspergillus flavus UICC 360 telah diketahui dapat menghasilkan senyawa anti-Candida albicans. Penelitian bertujuan untuk mengetahui pengaruh konsentrasi natrium nitrat terhadap kemampuan anti-C. albicans dari Aspergillus flavus UICC 360. Sebanyak (2,8--3,7) x 107 CFU/ml inokulum Aspergillus flavus UICC 360 dengan konsentrasi 1,96% (v/v), diinokulasikan ke dalam medium Czapek?s Dox Broth yang berisi variasi konsentrasi natrium nitrat (0 mM, 23 mM, 29 mM, 35 mM, 41 mM, dan 47 mM). Fermentasi dilakukan selama 7 hari pada suhu ruang (27--30° C). Pengujian kemampuan anti-C. albicans dilakukan dengan menggunakan metode difusi agar cara cakram. Kemampuan anti-C. albicans ditunjukkan oleh terbentuknya zona hambat. Uji perbandingan berganda Least Significancy Difference (LSD) (P < 0,05) memperlihatkan adanya pengaruh nyata pemberian variasi konsentrasi natrium nitrat terhadap ukuran diameter zona hambat.Hasil penelitian menunjukkan NaNO3 29 mM (ekstrak E3 dalam etil asetat) merupakan konsentrasi terbaik untuk aktivitas anti-C. albicans, ditandai dengan diameter zona hambat, yaitu 8,70 ± 0,53 mm (setara dengan nistatin pada konsentrasi 1.581,8 ppm).

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Aspergillus flavus UICC 360 has been known to produce anti-Candida albicans compound. The research aims to determine the effect of sodium nitrate concentration on Aspergillus flavus UICC 360 in producing anti-C. albicans. Inoculum of (2.8--3.7) x 107 CFU/ml of Aspergillus flavus UICC 360 in 1.96% (v/v) concentration was inoculated into Czapek's Dox Broth medium containing various sodium nitrate concentration (0 mM, 23 mM, 29 mM, 35 mM, 41 mM, and 47 mM).

The fermentation was carried out for 7 days at 27--30° C. Investigation of anti-C. albicans test was carried out by disc agar diffusion method. Anti-C. albicans from Aspergillus flavus UICC 360 was shown by the formation of inhibitory zones. Least Significancy Difference test (P < 0.05) showed significant effect of the varying sodium nitrate concentration on inhibitory zone diameter.

The result showed that highest anti-C. albicans was shown by highest inhibition zone diameter at 8.70 ± 0.53 (equivalent to the activity of nystatin at concentration of 1,581.8 ppm) which was achieved at 29 mM NaNO3 (extract of E3 in ethyl acetate)."

"Microbial communities usually have mixed populations, only in uniqueenvironmental situations do microorganisms live entirely alone. Thus many types of interactions are possible among the members of an ecosystem?s community. In general, the constant association of different organisms in an ecosystem is referred to as symbiosis, with the associates being called symbionts. One type of a symbiosis is antagonism. Antagonism is a symbiotic relationship in whichone population of microorganisms has a harmful effect on the growth of another microbial population (Batzing 2002: 696). A number of microorganisms (bacteria, yeasts, fungi) which effectivelycontrol postharvest pathogens have been identified as antagonists (Mari and Guizzardi 1998:60). A variety of microbial antagonists were reported to control several different pathogens on various fruits. The organism that suppresses the pest or pathogen is referred to as the biological control agent (BCA) (Pal & Mcspadden Gardener 2006: 1). Biological control may in simple terms be defined as the use of one living organism to control another (Druvefors 2004: 4).Often antagonists are isolated on the surface of plants; this natural presence makes them more likely to succeed because of their colonization ability and environmental adaptation (Mari and Guizzardi 1998:60). The use of yeasts as antagonists appears to be quite promising, although the mechanism has not yet been fully elucidated. Some antagonist yeasts have been reported as biocontrol agent of fungal pathogen on fruits. Zhao et al. (2008: 115--116) reported that tomato fruit treated with Pichia guillermondii had an infection rate of 25% which was caused by Rhizopus nigricans, which wassignificantly lower than the control (41.67%). Kalogiannis et al. (2006: 72) reported that Rhodotorula glutinis Y-44 significantly reduced disease incidence caused by Botrytis cinerea on tomato by 52%, compared to the untreated control. Zhang et al. (2004: 84) reported that the application of Cryptococcus laurentii resulted in low average decay incidence caused by B. cinerea in fruit by 7.1%, compared with 40% in the water-treated control fruit. University of Indonesia Culture Collection (UICC) collected epiphytic yeasts from plant samples of Cibodas Botanical Garden, and moulds from decayed tomatoes and infected plants. The ability of the epiphytic yeasts as biocontrol agents against tomato spoilage-causing moulds has not beenreported. This study consists of two parts. Part 1 is The Antagonistic Ability of Epiphytic Yeasts of Cibodas Botanical Garden on Tomato Plant Infected-Causing Moulds. Part 2 is The Potential of Candida sp. UICC Y-328 as a Biocontrol Agent of Aspergillus ochraceus on Postharvest Tomatoes.The purposes of this study were to investigate the ability of six species of epiphytic yeasts in inhibiting the growth of tomato plant infected-causing moulds, and the potential of Candida sp. UICC Y-328 as a biocontrol agent in reducing postharvest tomato spoilage caused by Asp. ochraceus. The media used for growing the yeasts was Yeast Malt Agar (YMA), and maintenance for fungi was Potato Dextose Agar (PDA). The media used for antagonistic test were PDA and Potato Dextrose Broth (PDB). Antagonistic test by strip method was carried out by using the concentrations of yeast cells at (0.7--4.45) x 108 CFU/ml, and Asp. ochraceus at (7.0--8.1) x 107 CFU/ml, Asp. terreus Thom at (7.7--8.6) x 107 CFU/ml andDrechslera sp. at (0.45--3.5) x 105 CFU/ml. The yeast cells were inoculated 4 hours earlier before inoculation of mould spores on PDA in Petri dishes. Results showed that Candida sp. UICC Y-328 has highest percentage of colony reduction of Asp. ochraceus (56.45%), followed by Metschnikowia reukaufii UICC Y-351 on reducing colonies of Asp. terreus and Drechslera sp. (25.42% and 51.28%, respectively) during 6-day incubation. Antagonistic test by co-culture method was carried out by using the concentrations of yeast cells at (0.7--4.45) x 108 CFU/ml, and Asp. ochraceus at (6.0--8.6) x 107 CFU/ml, Asp. terreus at (4.6--9.5) x 107 CFU/ml. The yeast cells were inoculated 8 hours earlier before inoculation of mould spores on PDB. Results showed that Candida sp. UICC Y-328 reduced the size of conidial heads(5.52%) and hyphae (8.29%) of Asp. ochraceus, at 3-day incubation.Cryptococcus laurentii UICC Y-379 reduced the size of conidial heads and hyphae of Asp. ochraceus (15.07% and 11.60% respectively) and Asp.terreus (12.35% and 24.47% respectively) at 3-day incubation. Antagonistic test by slide culture method showed that the yeast cells of four strains (Candida rancensis UICC Y-326, Cr. laurentii UICC Y-319, Cr. laurentii UICC Y-379,and M. reukaufii UICC Y-351) attached to hyphae of Drechslera sp. after 3- and 4-day incubation.Cells of Candida sp. UICC Y-328 attached to hyphae of Drechslera sp. after 4-day incubation. Cells of Cr. laurentii UICC Y-385 was not able to attach to hyphae of Drechslera sp. Candida sp. UICC Y-328 was potential in reducing the growth of Asp. ochraceus, and was investigated further for its potential as a biocontrol agent. Wounds on postharvest tomatoes were inoculated with 25 µl of yeast cellsuspension and 25 µl of mould spore suspension. The yeast cells wereinoculated 24 hours earlier before inoculation of mould spores on wounds of tomatoes. Biocontrol study showed that incidence of spoilage in postharvest tomatoes which were wounded and inoculated with Candida sp. UICC Y-328 and Asp. ochraceus, were reduced by 20% after 15-day incubation at room temperature. All postharvest tomatoes which were wounded and inoculated with Asp. ochraceus as control, were spoiled (100%). Synthetic fungicide Dithane M-45 at a concentration of 0.08% reduced spoilage incidence by 70%. Candida sp.UICC Y-328 was not effective as biofungicide in reducing spoilage incidence."

"Peningkatan resistensi jamur terhadap obat antijamur yang tersedia dipasaran mengurangi efektivitas treatment untuk Candidiasis. Propolis mengandung berbagai senyawa dengan sifat antijamur Candida albicans, namun kandungan setiap jenisnya sangat beragam. Sebagai sampel digunakan propolis asal Sulawesi berjenis halus diambil dari dalam sarang , kasar diambil dari luar sarang dan mix gabungan keduanya . Molekul penanda anti C. albicans merupakan senyawa penanda untuk menyeleksi propolis dengan kemampuan mengatasi Candidiasis. Langkah awal adalah melakukan pengujian kadar senyawa flavonoid, fenolik dan alkaloid dengan menggunakan metode spektrometri UV -Vis. Didapati bahwa setiap sampel tidak selalu unggul pada setiap zat, sehingga propolis tidak dapat langsung diseleksi. Selanjutnya propolis diseleksi dengan uji aktivitas antijamur dengan metode difusi well. Propolis mix memiliki keunggulan sementara propolis halus dan kasar memiliki kemapuan yang sama. Kemudian dilakukan pengujian LC-MS, terdapat beberapa senyawa antijamur pada propolis mix yaitu tetralin, thymol, p-coumaric acid, caffeic acid, curcumene, guaizulene, dan mandelic acid. Senyawa guaizulene hanya terdapat pada propolis kasar, sementara senyawa caffeic acid dan mandelic acid hanya terdapat pada propolis halus. Terjadi sinergisitas propolis kasar dan halus yang terlihat pada propolis mix. Senyawa penanda yang terdapat pada semua sampel yang menandakan kemampuan anti C. albicans adalah senyawa tetralin, thymol, p-coumaric acid, dan curcumene.

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The increase in fungal resistance against antifungal drugs available in the market will reduce the effectiveness of treatment for Candidiasis. Propolis contains various compounds with antifungal properties Candida albicans, but the content of each type is very diverse. The sample used is Sulawesi propolis type smooth taken from inside the nest , rough taken from outside the hive and mix a combination of both . Anti C. albicans molecule marker, is a marker compound for selecting propolis with the ability to overcome Candidiasis. The initial step is to test the levels of flavonoids, phenolics, and alkaloids by using UV Vis spectrometry method. It was found that each sample is not always superior to any substance, so propolis cannot be directly selected. Furthermore, propolis selected by antifungal activity test with well diffusion method. Propolis mix has advantage while propolis smooth and rough have the same capability. LC MS test, there are several antifungal compounds in propolis mix, namely tetralin, thymol, p coumaric acid, caffeic acid, curcumene, guaizulene, and mandelic acid. Guaiazulene compounds are found only in rough propolis, while caffeic acid and mandelic acid compounds are present only in smooth propolis. A rough and smooth propolis synergy occurs in the propolis mix. The marking compound present in all samples showing the anti C. albicans capability was tetralin, thymol, p coumaric acid, and curcumene compounds."

"Pendahuluan: Candida albicans merupakan flora normal rongga mulut yang dapat berubah menjadi flora pathogen. Temulawak (Curcuma xanthorrhiza Roxb.) merupakan tanaman berkhasiat obat yang mengandung Xanthorrhizol. Ekstrak etanol temulawak secara in vitro dilaporkan dapat menghambat dan mengeradikasi biofilm C. albicans sehingga dapat diformulasikan untuk dikembangkan mejadi bentuk sediaan obat tetes topikal oromukosa. Uji toksisitas merupakan salah satu uji biokompatibilitas yang penting dalam proses pengembangan obat baru. Tujuan: Menetapkan nilai LD50 dan kategori toksisitas obat tetes ekstrak etanol temulawak. Serta efek yang ditimbulkannya pada berat badan, aktivitas fisik, dan makroskopis organ dalan hewan uji. Metode: 15 ml (16.650 mg)/kg BB obat tetes ekstrak etanol temulawak diberikan pada 5 hewan uji. Selanjutnya hewan uji diamati selama 14 hari untuk observasi tanda-tanda toksisitas dan kematian hewan uji. Jika terdapat kematian minimal pada dua hewan uji, maka diberikan dosis 7,5 ml/kg berat badan. Pada akhir pengamatan, hewan uji dikorbankan untuk pemeriksaan makroskopis organ dalam hewan uji. Hasil: Tidak ditemukan kematian hewan uji hingga akhir periode observasi. Seluruh hewan uji mengalami penurunan berat badan pada hari ke 2-5, kurang aktif selama 4 hari, dan dua hewan uji mengalami diare pada hari ke 2 dan 3. Pada pemeriksaan makroskopis tidak ditemukan kelainan pada organ usus, hati, paru-paru, jantung, limpa, dan ginjal. Kesimpulan: LD50 Obat tetes etanol temulawak lebih dari 16.650 mg/kg BB dengan kategori relatif aman, tidak menimbulkan perubahan aktifitas, gejala klinis dan berat badan yang menetap serta tidak ditemukan perubahan makroskopis organ dalam hewan uji.

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Introduction: Candida albicans is a normal flora of the oral cavity which can be transformed into pathogenic flora. Temulawak (Curcuma xanthorrhiza Roxb.) Is a medicinal plant containing Xanthorrhizol. Curcuma xanthorrhiza ethanolic extract is reported to inhibit and eradicate C. albicans biofilm so that it can be formulated to be developed into oral dosage form for oromucosal drops. The toxicity test is an important biocompatibility test in the process of developing new drugs.

Objective: To determine the LD50 value and the toxicity category of oromucosal drop containing Curcuma xanthorrhiza ethanolic extract, The effect on body weight, physical activity, and macroscopic organs in test animals.

Methods: 15 ml (16,650 mg)/kg BW of oromucosal drop containing Curcuma xanthorrhiza ethanolic extract were given to 5 test animals. Furthermore, the test animals were observed for 14 days to observe signs of toxicity and death of the tested animals. If there is death in at least two tests, a dose of 7.5 ml/kg BW is given. At the end of the observation, the test animal was sacrificed for macroscopic examination of the organs in the test animal.

Results: There were no deaths of test animals until the end of the observation period. Test animals experienced weight loss on day 2-5, were less active for 4 days, and all tested animals experienced diarrhea on days 2 and 3. On macroscopic examination, there were no abnormalities in the intestinal organs, liver, lungs, heart, spleen, and kidneys.

Conclusion: LD50 oromucosal drop containing Curcuma xanthorrhiza ethanolic extract more than 16.650 mg/kg BW are categorized as relatively safe, changes in activity, clinical symptoms, and body weight are not permanent, and there is no macroscopic change in the organs of the tested animals."

"Penelitian bertujuan mengetahui keragaman spesies khamir dari saluran pencernaan lebah madu Apis cerana di apiari Desa Ciburial, Bandung. Sebanyak 48 isolat khamir dari saluran pencernaan Pollen-collecting bee (PCB) (27 isolat) dan Nectarcollecting bee (NCB) (21 isolat) diidentifikasi berdasarkan data sequence daerah internal transcribed spacer (ITS) rDNA dan dikarakterisasi secara morfologi untuk melengkapi hasil identifikasi. Hasil identifikasi molekuler menunjukkan bahwa 48 isolat khamir tersebut terdiri atas delapan genus dan 16 spesies. Sebanyak 12 spesies khamir ditemukan pada PCB dan sembilan spesies khamir ditemukan pada NCB. Candida cf. apicola, C. etchellsii, Debaryomyces hansenii, Rhodotorula mucilaginosa dan Zygosaccharomyces rouxii ditemukan pada PCB maupun NCB. Spesies-spesies khamir yang diperoleh secara taksonomi heterogen, yaitu termasuk ke dalam class Hemiascomycetes dari phylum Ascomycota (13 spesies) dan class Urediniomycetes dari phylum Basidiomycota (3 spesies).

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The aim of this study was to study the diversity of yeast species isolated from the digestive tract of honey bee Apis cerana in apiary in Ciburial, Bandung. A total of 48 yeast isolates from the digestive tract of pollen-collecting bees (27 isolates) and Nectar-collecting bee (21 isolates) were identified based on sequence data of internal transcribed spacers regions of ribosomal DNA (ITS rDNA). In addition of their sequence data, yeasts were also characterized morphologically. The results showed that those yeasts comprised of eight genera and 16 species. Twelve yeast species were found from PCB and nine yeast species were found from NCB. Candida cf. apicola, C. cf. azyma, C. etchellsii, C. naeodendra, C. orthopsilosis, Cryptococcus heveanensis, Debaryomyces hansenii, Rhodotorula mucilaginosa and Zygosaccharomyces rouxii were found both in PCB and NCB. Our molecular analysis showed that A. cerana harbors taxonomically diverse yeasts. They consisted of species belong to the class Hemiascomycetes of the phylum Ascomycota (13 species) and class Urediniomycetes of the phylum Basidiomycota (3 species)."

"Penelitian bertujuan untuk mengetahui pengaruh konsentrasi sukrosa terhadap aktivitas anti-Candida albicans dari Aspergillus flavus UICC 360. Sebanyak (1,33--2,58) x 107 CFU/ml inokulum berisi hifa dan konidia Aspergillus flavus UICC 360 dengan 1,96% (v/v), diinokulasikan ke dalam medium Czapek?s Dox Broth dengan konsentrasi sukrosa yang berbeda. Proses fermentasi dilakukan selama 7 hari pada suhu 27--30 °C. Konsentrasi sukrosa yang digunakan adalah 0 mM, 58,5 mM, 73 mM, 87,7 mM, 102,3 mM, dan 116,9 mM. Pengujian aktivitas anti-Candida albicans dilakukan dengan metode Paper Disk Assay. Hasil penelitian menunjukkan terdapat perbedaan aktivitas dari masingmasing ekstrak dalam etil asetat. Ekstrak E4 (sukrosa 102,3 mM) dalam etil asetat menunjukkan aktivitas anti-Candida albicans tertinggi, sedangkan ekstrak kontrol (sukrosa 0 mM) dalam etil asetat tidak menunjukkan aktivitas anti- Candida albicans. Ekstrak E4 menghasilkan diameter zona hambat terbesar, yaitu 8,33 mm, setara dengan aktivitas antibiotik nystatin pada konsentrasi 1.515,2 ppm.

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The research aims to determine sucrose concentration effect on anti-Candida albicans activity of Aspergillus flavus UICC 360. (1.33--2.58) x 107 CFU/ml inoculum containing hyphae and conidia of Aspergillus flavus UICC 360 1.96% (v / v) was inoculated into the Czapek's Dox Broth medium with different concentrations of sucrose. The fermentation process was carried out for 7 days at 27--30 °C. Sucrose concentrations were 0 mM, 58.5 mM, 73 mM, 87.7 mM, 102.3 mM and 116.9 mM. Test for anti-Candida albicans activity was performed by Paper Disk Assay method.

The results showed that there were differences in the activity of each extract in ethyl acetate. Extracts E4 (sucrose 102.3 mM) in ethyl acetate showed the highest anti-Candida albicans activity, whereas extracts of control (sucrose 0 mM) in ethyl acetate showed no anti-Candida albicans activity. E4 extracts produced the largest zone of inhibition diameter, which was 8.33 mm, equivalent to the activity of antibiotics nystatin at 1515.2 ppm."