Potential Application of Hot Rehydration Alone or in Combination with Hydrogen Peroxide to Control Pectin Methylesterase Activity and Microbial Load in Cold-stored Intermediate-moisture Sun-dried Figs

2006 ◽  
Vol 69 (3) ◽  
pp. FCT170-FCT178
Author(s):  
D. DEMIRBÜKER ◽  
S. SIMSEK ◽  
A. YEMENICIOGLU
Keyword(s):  
Hydrogen Peroxide ◽  
Potential Application ◽  
Pectin Methylesterase ◽  
Microbial Load

scholarly journals Potential application of gold nanoparticles in food packaging: a mini review

Gold Bulletin ◽  
2021 ◽  
Author(s):  
Saeed Paidari ◽  
Salam Adnan Ibrahim
Keyword(s):  
Gold Nanoparticles ◽  
Potential Application ◽  
Food Industry ◽  
Food Packaging ◽  
Industrial Applications ◽  
Mechanisms Of Action ◽  
Microbial Load ◽  
Food Sector ◽  
The Past ◽  
Industry Applications

AbstractIn the past few decades, there have been remarkable advances in our knowledge of gold nanoparticles (AuNPs) and synthesizing methods. AuNPs have become increasingly important in biomedical and industrial applications. As a newly implemented method, AuNPs are being used in nanopackaging industries for their therapeutic and antibacterial characteristics as well as their inert and nontoxic nature. As with other NPs, AuNPs have privileges and disadvantages when utilized in the food sector, yet a significant body of research has shown that, due to the specific nontoxic characteristics, AuNPs could be used to address other NP flaws. In this mini review, we present synthesizing methods, food industry applications, and mechanisms of action of gold nanoparticles. Regarding the investigations, gold nanoparticles can play a major role to reduce microbial load in foodstuff and therefore can be implemented in food packaging as an effective approach.

Potential Application and Bactericidal Mechanism of Lactic Acid–Hydrogen Peroxide Consortium

2019 ◽  
Vol 189 (3) ◽  
pp. 822-833 ◽  
Author(s):  
Chenchen Zhang ◽  
Susu Zhang ◽  
Wei Liu ◽  
Tingting Guo ◽  
Ruixia Gu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Lactic Acid ◽  
Potential Application ◽  
Bactericidal Mechanism

scholarly journals Micropilar and embryonic events during hydration of Melanoxylon brauna Schott seeds

2015 ◽  
Vol 37 (3) ◽  
pp. 192-201 ◽  
Author(s):  
Eduardo Euclydes de Lima e Borges ◽  
Glauciana da Mata Ataíde ◽  
Antônio César Batista Matos
Keyword(s):  
Hydrogen Peroxide ◽  
Economic Value ◽  
Hydrolytic Enzymes ◽  
Pectin Methylesterase ◽  
Embryonic Axis ◽  
Fresh Matter ◽  
Complex Process ◽  
Puncture Force ◽  
Catalase Peroxidase ◽  
Physical Resistance

Abstract:Germination is a complex process that involves molecules properties that make up the cell walls, hydrolytic enzymes that break the bonds between the polymers and action of reactive oxygen substance. Melanoxylon braunais a forest species of high economic value. In order to evaluate the physiological and biochemical changes that occur in the embryonic axis during germination, fresh matter, length, activities of the enzymes pectin methylesterase, polygalacturonase, superoxide dismutase, catalase, peroxidase and hydrogen peroxide levels were quantified in the embryonic axis. Furthermore, in the micropyle area the composition of carbohydrates and micropyle physical resistance were evaluated with and without drying. During soaking, if there are increases in fresh matter and length of the embryonic axis, there is the same trend of polygalacturonase and pectin methylesterase enzymes. The hydrogen peroxide content was reduced during the soaking, as well as the puncture force of the micropylar area. It is concluded that the seed coat and the cotyledons are responsible for 90% of the water soaked by the seeds. The events in the micropyle and embryonic axis occur independently in the first 16 hours. The weakening of the micropyle features an elastic step and a plastic one. Enzymes pectin methylesterase and polygalacturonase act in cellular expansion of the embryonic axis.

Fabrication of Translucid Gold‐nanocellulose Electrodes and Their Potential Application as Hydrogen Peroxide Sensor

2021 ◽  
Author(s):  
Macarena Kroff ◽  
Ana Luiza Fornazari ◽  
Daniel Correa‐Encalada ◽  
Maria José Rubio ◽  
Samuel A. Hevia ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Potential Application ◽  
Hydrogen Peroxide Sensor

The Presterilization Microbial Load on Used Medical Devices and the Effectiveness of Hydrogen Peroxide Gas Plasma AgainstBacillus SubtilisSpores

1999 ◽  
Vol 20 (7) ◽  
pp. 465-472 ◽  
Author(s):  
Thereza Christina Vessoni Penna ◽  
Carlos Augusto M. Ferraz ◽  
Maria Águida Cassola
Keyword(s):  
Hydrogen Peroxide ◽  
Spinal Anesthesia ◽  
Medical Devices ◽  
Membrane Filter ◽  
Culture Collection ◽  
Microbial Load ◽  
Gas Plasma ◽  
Fold Reduction ◽  
Fungal Organisms ◽  
Aerobic And Anaerobic

Objectives:To determine the microbial load found on used critical medical devices (5 spinal anesthesia needles, 21 catheters, and 28 sheaths) prior to sterilization and to evaluate the effectiveness of hydrogen peroxide gas plasma against inoculatedBacillus subtilisvargiobigii(American Type Culture Collection 9372) spores.Methods:Membrane filter and pour-plate methods were applied to estimate total microbial loads (aerobic and anaerobic, mesophilic and thermophilic, vegetative and spore forms). Spinal anesthesia needles (102 units) and sheath components (61 units) were inoculated with a suspension ofB subtilisspores. After drying, the devices were sterilized with hydrogen peroxide gas plasma.Results:Higher counts of aerobic, mesophilic, and fungal organisms were recovered when the drying period was insufficient. Anaerobic spores were not found in any analyzed presterilization items. The hydrogen peroxide gas plasma effected a 5 to 7 log10-fold reduction inB subtilisspore counts in well-dried needles and sheath components.Conclusions:The success of hydrogen peroxide gas plasma sterilization depends mostly on educating the staff to assure well-cleaned and dried reusable medical devices, allowing penetration of the hydrogen peroxide gas plasma into the critical points of the items and providing a reduction in organisms.

scholarly journals Effects of hydrogen peroxide preoxidation on clarification and reduction of the microbial load of groundwater and surface water sources for household treatment

2021 ◽  
Author(s):  
Kamila Jessie Sammarro Silva ◽  
Luan de Souza Leite ◽  
Natália de Melo Nasser Fava ◽  
Luiz Antonio Daniel ◽  
Lyda Patricia Sabogal-Paz
Keyword(s):  
Water Quality ◽  
Hydrogen Peroxide ◽  
Surface Water ◽  
Product Formation ◽  
Microbial Load ◽  
Waterborne Diseases ◽  
Household Water Treatment ◽  
Household Water ◽  
High Level ◽  
Source Water Quality

Abstract Household water treatment (HWT) technologies are a promising strategy for addressing the waterborne diseases burden. However, in order to be efficient, these are often limited to water quality and require it to not exceed a certain threshold of physicochemical and microbiological contamination. Additionally, some popular HWTs, as chlorination, are related to by-product formation. Preoxidation may improve source water quality, and hydrogen peroxide (H2O2) is an oxidant that has not been deeply explored in this specific application, so it could be an innovative approach to HWTs. We investigated effects of H2O2 preoxidation in two natural source waters (surface and groundwater), spiked with a high level of microorganisms. Clarification results suggested this pretreatment may improve life of HWTs. Reduction in microbial load of groundwater was considered ineffective, but 5-min H2O2 preoxidation at 15 mg L−1 led to >4.0 log10 inactivation of Phi X174 coliphage and >3.0 of Escherichia coli in surface water. We believe this performance was increased due to the presence of catalysts in the river water. This raised the point that water quality may be not only impairing, but potentially beneficial to the main HWT and characterization is crucial prior to the implementation of any technologies.

Study on the Photoelectric Properties of CdSe/MS Composite Film and its Potential Application in Biosensor Field

2012 ◽  
Vol 560-561 ◽  
pp. 688-693
Author(s):  
Ping Wang ◽  
Li Hua Cheng ◽  
Ru Jin Zhou
Keyword(s):  
Hydrogen Peroxide ◽  
Horseradish Peroxidase ◽  
Mesoporous Silica ◽  
Composite Film ◽  
Potential Application ◽  
Cdse Nanocrystals ◽  
Composite Particles ◽  
Response Signal ◽  
Uv Illumination ◽  
Photoelectric Properties

CdSe nanocrystals were prepared within a template of mesoporous silica (MS) spheres via chemical reaction. The photocurrent of CdSe/MS composite under UV illumination was distinctly higher than that in the dark. The horseradish peroxidase (HRP) was immobilized on the surface of the composite particles. The HRP/CdSe/MS composite film toward the reduction of hydrogen peroxide (H2O2) had stronger response signal under UV illumination than that in the dark. The electrons photo-generated from CdSe and the electrons provided by electrode can occur simultaneously to catalyze the reduction of H2O2. The holes photo-generated by CdSe are trapped at the interface between CdSe and pore walls of MS film. The results show that CdSe/MS composite film has good photoelectric properties and potential application on immobilization of horseradish peroxidase for hydrogen peroxide monitoring.

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