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All Journal Pro-Life Jurnal Perikanan Universitas Gadjah Mada Budapest International Research in Exact Sciences (BirEx Journal) Journal of Tropical Biodiversity
Yulneriwarni Yulneriwarni
Faculty Of Biology, Universitas Nasional, Jakarta
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Immunology & microbiology Physics Transportation

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AKTIVITAS ANTIBAKTERIEKSTRAK MAKROALGA Padina australis DAN Laurencia nidifica DI KEPULAUAN SERIBU TERHADAP BAKTERI Staphylococcus aureus DAN Escherichia coli Yulneriwarni Yulneriwarni
Jurnal Pro-Life Vol. 3 No. 3 (2016): November
Publisher : Program Studi Pendidikan Biologi Fakultas Keguruan dan Ilmu Pendidikan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/jpvol6Iss2pp102

Abstract

Macro algae are plants that live in the sea, belongs to the group Thalophyta. These herbs contain bioactive compounds that have the potential in the health field that is antibacterial. Antibacterial substances used as drugs in the treatment of several diseases caused by bacteria. Type of macro-algae used in this study is Padina australis and Laurencia nidifica of Pulau Penjaliran TimurKepulauan Seribu, using bacteria Staphylococcus aureus and Escherichia coli as test bacteria. Antibacterial testing method used is the method of dilution with extract concentrations of 10%; 20%; 30%. For comparison is used as positive control in the form of chloramphenicol while the negative control used mueler hinton broth medium. The design used in this study is completely randomized design factorial. The results show extracts of P. australis and L. nidifica has potential as an antibacterial with different abilities to the test bacteria. L. nidifica extract has antibacterial power capability is higher than P. australis. Both types of macro-algae extract at a concentration of 10% is able to inhibit the growth of test bacteria E. coli and S. aureus. Test bacteria E. coli has a more sensitive response to both macro-algae extract when compared with S. aureus bacteria.
Potensi Antibakterial Bakteri Asam Laktat dari Peda, Jambal Roti, dan Bekasam Ninoek Indriati; Indriarto P. Danan Setiawan; Yulneriwarni Yulneriwarni
Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 2 (2006)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.130

Abstract

Isolation of lactic acid bacteria from fermented fish products, peda, jambal roti and bekasam were carried out. Antibacterial activity of lactic acid bacteria was tested using well diffusion method against Escherichia coli, Bacillus cereus, Pseudomonas aeruginosa and Staphylococcus aureus. Twelve isolates of lactic acid bacteria had been isolated. Results showed that isolate A2 from peda was able to inhibit the growth of the 4 testing bacteria with inhibition zones of 6.7 mm for E. coli; 7.3 mm for P. aeruginosa; 8.3 mm for S. aureus and 10.0 mm for B. cereus. Isolate B5 from jambal roti had inhibition zones 11.6 mm for E. coli; 6.0 mm for P. aeruginosa ; 7.3 mm for S. aureus and 13.3 mm for B. cereus ; while isolate C6 from bekasam had inhibitor zones 7.7 mm for E. coli; 6.0 for P. aeruginosa; 8.0 mm for S. aureus and 9.3 mm for B. cereus.
Utilization of Medicinal Plants in Turi Putih Village, Blitar, East Java and Antibacterial Tests against Staphylococcus aureus and Escherichia coli Sri Endarti Rahayu; Dini Wulan Dari; Yulneriwarni Yulneriwarni
Journal of Tropical Biodiversity Vol 1 No 2 (2021): April 2021
Publisher : Universitas Nasional Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.615 KB)

Abstract

Plants contain compounds that can be considered as antimicrobials. The community of Turi Putih Village have used plants that have medicinal properties to treat certain diseases, especially those caused by bacteria. For this reason, it is necessary to conduct research on the use of medicinal plants and antibacterial tests from plants originating from Turi Putih Village. The purpose of this study was to determine the diversity of medicinal plants, plant parts used, preparation and use of medicinal plants by the local community, as well as the antibacterial potential of medicinal plants that have High score of Use Value (UV) and Fidelity Level (FL) ​​to treat those diseases. Data was collected by using semi-structural interviews and respondents were chosen by purposive sampling. To analyze the data, we adopted qualitative and quantitative ethnobotanical technique. Qualitative, namely descriptive methods to make an inventory of the composition of medicinal plants and preparation and use by the community, and quantitative to see the most commonly used and most preferred species ethnomedicinal plant species for treating certain ailments. . Based on interviews with respondents, the community uses 44 species of medicinal plants, 40 genus that belong to 26 plant families to treat 19 diseases caused by bacteria. Based on UV and FL scores, mint leaves (Mentha piperita) and kencur leaves (Kaempferia galanga) had the highest scores. The results showed that mint leaves and kencur leaves have antibacterial activity by forming an inhibition zone against Staphylococcus aureus and Escherichia coli. In this study, extract from leaf of K. galanga appeared to be more potent than that of leaf of M. piperita, and produced consistent level of inhibition of bacterial growth. Since it was revealed that the leaves extract of Kaempferia galanga has the ability to inhibit the growth of Staphylococcus aureus – food – poisoning organism, hence, it would be interesting to investigate the potentially of this plant for possible application in foods to promote safety.
Additional Nata de Coco on The Performance of Cassava Starch Based Bioplastic Febia Rini; Yulneriwarni Yulneriwarni; Endang Sukara
Journal of Tropical Biodiversity Vol 3 No 1 (2022): December 2022
Publisher : Universitas Nasional Jakarta

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Abstract

Bioplastics, an environmental friendly materials, attracting interest to many scientists around the world. Cassava starch may used as a major ingredient for bioplastics production. The addition of cellulose could improve the quality of starch base bioplastics. Cellulose used for thispurpise is mainly extracted from wood. Extraction of cellulose from wood materials is not easy. Removing contaminant particularly lignin is the major obstacle. The use nata de coco, a pure crystalline cellulose, may of great choice to replace cellulose of wood origin. It is the aim of this study to search the possibility of using nata de coco as filler replacing cellulose of wood origin for the production of bioplastic using cassava starch. The effect of nata de coco as a filler on the quality of bioplastics was studied using a Central Composite Design (CCD) and Response Surface Analysis (RSA). The ratio of tapioca and nata de coco and the ratio of nata de coco and glycerol were evaluated. The performance of bioplastics was measured semi qualitatively based on the structure, color, and its similarity to synthetic plastics. The result shows that the quality of bioplastics affected by nata de coco linearly when the maximum of nata de coco used up to 40% (v / v). Bioplastics may be prepared using 10% (w / v) tapioca, 3% (w / v) glycerol and 40% (v / v) nata de coco. The average degree of swelling of bioplastics is 18.75%, an average tensile test of 0.01494 kgf / mm2 and an average elongation 14.4056%. The results of this study indicate that nata de coco may be used as a filler in the manufacture of starch-based bioplastics re placing wood based cellulose.
Potential of Coconut Dregs Flour and Tofu Dregs Flour As An Ingredient for Snack bar Production Yulneriwarni, Yulneriwarni
Budapest International Research in Exact Sciences (BirEx) Journal Vol 6, No 1 (2024): Budapest International Research in Exact Sciences, January
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v6i1.7814

Abstract

Waste or by-products from the food industry, such as coconut dregs and tofu dregs, are available in abundant quantities. The use of coconut dregs and tofu dregs as animal feed is generally limited. However, in both of these dregs, necessary nutrients are still present in the body Dregs. This can also be reprocessed into flour, supporting sustainable food security. Coconut dregs flour and tofu dregs flour can be used as raw materials in making several food products with economic value, such as snack bars, so that they can support product diversification. The snacks at the snack bar are stick-shaped and have a dense texture. Snack bars can be consumed as ready-to-eat food, fulfilling the necessity of public activity. This research aims to find the optimal formulation of coconut dregs flour and tofu dregs for making snack bars. The best formulation is determined in research carried out by organoleptic testing of the snack bars produced, including color, aroma, taste, and texture, which is then continued with analysis of carbohydrate content, protein content, fat content, ash content, water content, and crude fiber content. The research results show that coconut dregs flour and tofu dregs have the potential to be basic ingredients in making snack bars. From the organoleptic test results seen, the snack bar that has been rated highest by the panelists is a product made from 30% coconut pulp flour and 70% tofu pulp flour, which has quite good nutritional content and quite high fiber content.
Co-Authors Dini Wulan Dari Endang Sukara Febia Rini Indriarto P. Danan Setiawan Ninoek Indriati Sri Endarti Rahayu