Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 4 of 4
Full-Text Articles in Microbial Physiology
Effect Of Red And Blue Light On Lipid, Protein, Carbohydrate, And Pigment Contents Of Navicula Sp., Sofyan Maulana, Aulia Setyo Nurul Hida, Ismia Wulandari, Siti Mudrikah, Dedy Kurnianto, Khusnul Qonita Maghfiroh, Ria Amelia, Tia Erfianti, Renata Adaranyssa Egistha Putri, Irika Devi Anggraini, Septhian Marno, Eko Agus Agus Suyono
Effect Of Red And Blue Light On Lipid, Protein, Carbohydrate, And Pigment Contents Of Navicula Sp., Sofyan Maulana, Aulia Setyo Nurul Hida, Ismia Wulandari, Siti Mudrikah, Dedy Kurnianto, Khusnul Qonita Maghfiroh, Ria Amelia, Tia Erfianti, Renata Adaranyssa Egistha Putri, Irika Devi Anggraini, Septhian Marno, Eko Agus Agus Suyono
Makara Journal of Science
Light quality critically modulates the physiology of diatoms, influencing photosynthetic efficiency and metabolite synthesis. This study examines how monochromatic red (620–750 nm) or blue (450–495 nm) light affects the biochemical profiles and pigment production in Navicula sp. versus white light (control). Cultures were grown in sterile f/2 medium, and biomass was tracked via OD680. Biochemical analyses included lipids (Bligh and Dyer method), carbohydrates (phenol-sulfuric acid assay), proteins (Bradford assay), and pigments (spectrophotometric quantification). The growth dynamics were modeled using logistic and Gompertz equations. No significant differences in OD-based growth rates, carbohydrates, proteins, or lipids content were observed with …
Activities Of Cellulolytic, Amylolytic, And Secondary Metabolites From Thermophilic Actinomycetes Collected From The Heated Soil Around Cisolok Geyser, Dhian Chitra Ayu Fitria Sari, Fitria Ningsih, Mazytha Kinanti Rachmania, Akira Yokota, Wellyzar Sjamsuridzal
Activities Of Cellulolytic, Amylolytic, And Secondary Metabolites From Thermophilic Actinomycetes Collected From The Heated Soil Around Cisolok Geyser, Dhian Chitra Ayu Fitria Sari, Fitria Ningsih, Mazytha Kinanti Rachmania, Akira Yokota, Wellyzar Sjamsuridzal
Makara Journal of Science
This study investigated the antimicrobial activity, cellulolytic, and amylolytic abilities of eight thermophilic Actinomy-cetes isolated from the heated soil around the Cisolok geyser, West Java, Indonesia. Cellulolytic and amylolytic abili-ties were screened for on media by adding 1% (w/v) soluble starch and carboxymethylcellulose (CMC), respectively. Antimicrobial activity was screened for using the agar-plug diffusion method by cultivating strains on various growth media. Growth at various temperatures showed that six strains could grow up to 50 °C. Seven out of eight strains showed amylolytic ability at 40 °C and 45 °C, and only four strains did so at 50 °C. Screening …
Enrichment Media Selection And Co-Culture Potential Among Exoelectrogen Bacteria Vary With Ecological Factors, Nur Syafira Khoirunnisa, Syaiful Anwar, Untung Sudadi, Dwi Andreas Santosa
Enrichment Media Selection And Co-Culture Potential Among Exoelectrogen Bacteria Vary With Ecological Factors, Nur Syafira Khoirunnisa, Syaiful Anwar, Untung Sudadi, Dwi Andreas Santosa
Makara Journal of Science
Staphylococcus saprophyticus ICBB 9554 and Citrobacter freundii ICBB 9763 are exoelectrogen bacteria applied as microbial fuel cells (MFC). We selected enrichment media for both these exoelectrogen bacteria, characterized their synergistic traits, and evaluated the growth conditions under different ecological factors. In this study, different enrichment media, such as those containing sugar, molasses, and palm sugar (2, 4, and 6% w/v) were tested for S. saprophyticus ICBB 9554. Meanwhile, technical sodium acetate (NaAc), commercial vinegar 25%, and cider vinegar (5, 10, and 15 mM acetate concentration) were tested for C. freundii ICBB 9763. Both the exoelectrogen bacteria were tested for the …
Yeasts Isolated From Traditional Brem Bali Show Stress Tolerance Phenotype Against Fermentation-Related Stresses, Audria Bayu Lenka, Rika Indri Astuti, Sri Listiyowati
Yeasts Isolated From Traditional Brem Bali Show Stress Tolerance Phenotype Against Fermentation-Related Stresses, Audria Bayu Lenka, Rika Indri Astuti, Sri Listiyowati
Makara Journal of Science
The search for microbes, primarily yeasts with unique characters such as the tolerance against fermentation-related-stresses, is gaining significant interest nowadays. Traditionally made alcoholic beverages can be used as sources for such yeasts, given that during fermentation and storage, microbes may develop stress tolerance responses leading to naturally stress-tolerant yeast strains. In this study, we used an alcoholic beverage, that is, Brem Bali, as the source of potential yeast isolates. We isolated nine yeast isolates from two traditional Brem Bali products. All isolates showed tolerance against high glucose stress (40–50%) and sensitivity against high-temperature stress (37–50 °C). Notably, isolate BT5 showed …