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INDONESIA
Jurnal Teknologi Laboratorium
Published by Poltekkes Kemenkes Yogyakarta
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Core Subject : Science, Education,
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Articles 4 Documents
 1 
Search results for , issue "Vol 9 No 2 (2020): (In Progress)" : 4 Documents clear
Potential use of macroalgae and its symbiont bacteria isolated from tanjung tiram as a source of amylase enzyme Kusumawati, Herdiani Nur
Jurnal Teknologi Laboratorium Vol 9 No 2 (2020): (In Progress)
Publisher : POLTEKKES KEMENKES YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29238/teknolabjournal.v9i2.183

Abstract

This study aimed to extract the amylase enzyme produced by macroalgae and its symbiont bacteria isolated from The Coastal Waters of Tanjung Tiram, Kendari, Southeast Sulawesi and to define its characteristics. Macroalgae is a cultivation commodity in Indonesia that has the potential as a source of enzymes, including amylase enzyme. Amylase is an enzyme that functions to catalyze the hydrolysis reaction of starch and glycogen into maltose, maltotriose, isomaltose, and glucose. Methods used in this study were enzyme extraction, enzyme purification by ammonium sulfate precipitation and dialysis, qualitative assay by iodine test, quantitative assay by DNS method and UV-Vis spectrophotometry. Qualitative assay for amylase activity of macroalgae showing positive results whereas its symbiont bacteria showing no amylase activity. The optimum temperature was 50oC, pH 9 and salt 3 M. Quantitative assay of amylase activity at optimum condition was 0,023 U/ml. Macroalgae from Tanjung Tiram water was a potential source of amylase enzyme for food or pharmaceutical industry purposes
IDENTIFIKASI KONTAMINASI Salmonella Typhi BERDASARKAN AMPLIFIKASI GEN fliC PADA CINCAU DI PASAR TRADISIONAL DAN MINIMARKET KOTA SEMARANG Ernanto, Aditya Rahman; Palimbongan, Junita Rensa; Manufandu, Anjar Richardo; Darmawati, Sri
Jurnal Teknologi Laboratorium Vol 9 No 2 (2020): (In Progress)
Publisher : POLTEKKES KEMENKES YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29238/teknolabjournal.v9i2.207

Abstract

Grass-jelly is one of the most popular plants consumed by people in various forms of beverage mix because it is easy to gets in traditional markets. Microorganism contamination can occur in grass-jelly due to several factors such as water for processing, equipments, processing facilities and from people who did the process. Contamination can cause various diseases, one of those is typhoid fever by Salmonella typhi. The purpose of this study was to detect S. typhi in grass-jelly based on molecular detection by amplification of the fliC gene using PCR. Steps of the methods were DNA extraction from grass-jelly samples, genomic DNA quality testing, amplification of fliC gene and agarose electrophoresis. Validation was done by culture methods on SSA media and biochemical testing. The fliC gene amplification results in grass-jelly samples (A1, A2, B1, B2, C1 and C3) showed the DNA fragments size about 1500 bp. Colony and biochemical characters isolates Peterongan were lead to S. typhi, whereas another isolate were another Salmonella spp. The conclusion of this study was that grass-jelly samples from Peterongan market in Semarang were positively contaminated by S. typhi and isolate from Pedurungan and minimarket were another Salmonella spp. Molecular-based food testing is fast enough and accurate for detecting types of bacterial contaminants but amplification of fliC gene cannot specific for S. typhi.
Konfirmasi Index Eritrosit Dengan Sediaan Apus Darah Tepi (Sadt) Pada Penduduk Tambaklorok Semarang Yang Terpajan Pb Santosa, Budi
Jurnal Teknologi Laboratorium Vol 9 No 2 (2020): (In Progress)
Publisher : POLTEKKES KEMENKES YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29238/teknolabjournal.v9i2.213

Abstract

Erythrocyte index consisting of MCV, MCH, MCHC serves for the classification of types of anemia. High or low erythrocyte index can give a picture of erythrocyte morphology in the peripheral blood smear preparation. Lead exposure in Tambaklorok exceeds the threshold that affects anemia. The purpose of this study was to determine the erythrocyte index confirmation with erythrocyte morphology in the peripheral blood smear preparation. This type of analytic research is cross sectional approach. The research population was Tambaklorok Semarang residents and 104 samples were taken using purposive technique. Erythrocyte index was measured using hematological analyzer and erythrocyte morphology in the peripheral blood smear preparation using Giemsa painting. Erythrocyte index confirmation with the peripheral blood smear preparation was analyzed using the Gamma statistical relationship test. The results showed that the erythrocyte index value was mostly in the normal category, i.e., MCH 68 (64.4%), MCHC 61 (58.6%) and MCH 58 (56%) and below normal category were MCH 45 (42.95%), MCHC 41 (39.4%), and MCV 36 (34.3%). Erythrocyte morphology was mostly hypochromic, namely 46 (44.23%), normochrome 40 (38.46%), and hyperchrome 18 (17.3%). Relationship of MCH with erythrocyte color p value 0.037 with size p value 0.038. Conclusion of erythrocyte index confirmation, especially MCH with the peripheral blood smear preparation, there was a match on the color and size of erythrocytes, while the MCV and MCHC values ​​had no significant relationship.
In-vitro antibacterial activity of the seed extract of three member Artocarpus towards methicillin resistant Staphylococcus aureus (MRSA) Prastiyanto, Muhammad Evy; Azizah, Inas Hasna; Haqi, Hafizha Dara; Yulianto, Bagus Dwi; Agmala, Aulia Bella; Radipasari, Zhafira Dias; Astuti, Nita Ayu Dwi; Putri, Arifani Rahma
Jurnal Teknologi Laboratorium Vol 9 No 2 (2020): (In Progress)
Publisher : POLTEKKES KEMENKES YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29238/teknolabjournal.v9i2.237

Abstract

Methicillin-Resistant Staphylococcus aureus (MRSA) infections have created a critical need for the development of natural antibacterials from biological sources. This research aimed to investigate the antibacterial activity of the seed extract of three-member Artocarpus (Artocarpus heterophyllus, A. champeden and A. camansi) against MRSA which are the most prevalent causes of infections in patients. Crude seed extracts of three-member Artocarpus were evaluated for their antibacterial activity against MRSA. The antibacterial activity against MRSA of the three extracts was assayed in vitro by the agar well diffusion assay and agar microdilution method (Minimum inhibitory concentration [MIC] and Minimum bactericidal concentration [MBC]). The best antibacterial activity, calculated as a zone of inhibition and MIC, MBC values. The Crude seed extracts of three-member Artocarpus showed antibacterial activity against the MRSA in the agar well diffusion assay (1.5-9 mm inhibition diameter). The MIC value of extract showed at 15.62 mg/mL and the MBC value of seed extract of A. heterophyllus at 62.5 mg/mL, A. champeden at 31.25 mg/mL, A. camansi at 250 mg/mL. The data have revealed that all seed extracts have the potential to be developed as antibacterial agents, particularly against MRSA strain. Further in vivo research and discovery of mode action are needed to shed light on their antibacterial effects. Research on anti-MRSA of seed extract of Artocarpus against MRSA has not been reported. Studies on the antibacterial activity against MRSA can provide new information about the benefits seed of members of Artocarpus as a source of natural antibacterial.

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