chlorophyll-a has been researched along with chlorine-dioxide* in 4 studies
4 other study(ies) available for chlorophyll-a and chlorine-dioxide
| Article | Year |
|---|---|
Ultra-low concentration of chlorine dioxide regulates stress-caused premature leaf senescence in tobacco by modulating auxin, ethylene, and chlorophyll biosynthesis.
Exploring novel growth regulators for premature senescence regulation is important for tobacco production. In the present study, chlorine dioxide (ClO Topics: Chlorine Compounds; Chlorophyll; Ethylenes; Gene Expression Regulation, Plant; Indoleacetic Acids; Nicotiana; Oxides; Plant Leaves; Plant Senescence | 2022 |
Combined effects of ultrasound and aqueous chlorine dioxide treatments on nitrate content during storage and postharvest storage quality of spinach (Spinacia oleracea L.).
The objectives of this study were to optimize the condition of ultrasonic treatment combined with aqueous chlorine dioxide (ClO Topics: Ascorbic Acid; Chlorine Compounds; Chlorophyll; Food Preservation; Food Preservatives; Food Storage; Nitrates; Oxides; Plant Leaves; Spinacia oleracea; Ultrasonics; Vegetables | 2020 |
Using digital flow cytometry to assess the degradation of three cyanobacteria species after oxidation processes.
Depending on drinking water treatment conditions, oxidation processes may result in the degradation of cyanobacteria cells causing the release of toxic metabolites (microcystin), odorous metabolites (MIB, geosmin), or disinfection byproduct precursors. In this study, a digital flow cytometer (FlowCAM(®)) in combination with chlorophyll-a analysis was used to evaluate the ability of ozone, chlorine, chlorine dioxide, and chloramine to damage or lyse cyanobacteria cells added to Colorado River water. Microcystis aeruginosa (MA), Oscillatoria sp. (OSC) and Lyngbya sp. (LYN) were selected for the study due to their occurrence in surface water supplies, metabolite production, and morphology. Results showed that cell damage was observed without complete lysis or fragmentation of the cell membrane under many of the conditions tested. During ozone and chlorine experiments, the unicellular MA was more susceptible to oxidation than the filamentous OSC and LYN. Rate constants were developed based on the loss of chlorophyll-a and oxidant exposure, which showed the oxidants degraded MA, OSC, and LYN according to the order of ozone > chlorine ~ chlorine dioxide > chloramine. Digital and binary images taken by the digital flow cytometer provided qualitative insight regarding cell damage. When applying this information, drinking water utilities can better understand the risk of cell damage or lysis during oxidation processes. Topics: Chloramines; Chlorine; Chlorine Compounds; Chlorophyll; Chlorophyll A; Cyanobacteria; Disinfectants; Flow Cytometry; Fluorescence; Kinetics; Microcystis; Oxidation-Reduction; Oxides; Ozone; Rivers; Water Purification | 2013 |
New method for discovery of starch phenotypes in growing microalgal colonies.
To identify algal strains with altered starch metabolism from a large pool of candidates of growing algal colonies, we have developed a novel, high-throughput screening tool by combining gaseous bleaching of replica transferred colonies and subsequent iodine staining to visualize starch. Screening of healthy growing colonies of microalgae has not been possible previously because high levels of chlorophyll make the detection of starch with an iodine stain impossible. We demonstrated that chlorine dioxide (ClO(2)) removes essentially all chlorophyll from the colonies and enables high-throughput screening of, for example, a population of mutagenized cells or a culture collection isolated in a bioprospecting project. Topics: Chlorine Compounds; Chlorophyll; Colorimetry; Gases; High-Throughput Screening Assays; Microalgae; Oxides; Starch | 2013 |