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Ziarani GM, Khademi M, Mohajer F, Badiei A. The Application of Modified SBA-15 as a Chemosensor. CURRENT NANOMATERIALS 2022; 7:4-24. [DOI: 10.2174/2405461506666210420132630] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/13/2021] [Accepted: 03/04/2021] [Indexed: 06/17/2023]
Abstract
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The Santa Barbara Amorphous (SBA-15), with a large surface area covered with abundant
Si-OH active groups on the walls of its pores, can be modified with various organic compounds
to build organic-inorganic hybrid materials, which can be used as a catalyst in organic reactions,
drug delivery systems, nano sorbent due to its high capacity for removing heavy metals in
waste water and as chemosensors for ions. Tunable and straight channels of SBA-15 facilitate the
entrance and diffusion of ions through the channels. This paper presents a review of the past five
years of literature covering the application of SBA-15 as an ions chemosensor in the liquid and
gaseous media.
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Affiliation(s)
- Ghodsi Mohammadi Ziarani
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran, Tehran, Iran
| | - Mahdieh Khademi
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran, Tehran, Iran
| | - Fatemeh Mohajer
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran, Tehran, Iran
| | - Alireza Badiei
- School of
Chemistry, Collage of Science, University of Tehran, Tehran, Iran
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Preliminary Evidence of a Molecular Detection Method to Analyze Bacterial DNA as a Quality Indicator in Cosmetics. COSMETICS 2020. [DOI: 10.3390/cosmetics7030054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cosmetics are a category of widely consumed and distributed products, and their manufacture is always subject to specific guidelines. Quality Control (QC) tests provide information supporting the absence of injurious organisms and regarding the microbiological stability of cosmetics. The microbiological risk analysis is typically performed using the plate count method, which is a time-consuming and operator-dependent approach. Molecular technologies allow a deeper and more sensitive testing than traditional cultures. The demand for rapid and sensitive methods is recently increasing. The aim of our study was to compare different DNA extraction methods in order to detect and quantify bacterial load in cosmetics using a qPCR system. Known numbers of microorganisms were spiked into six different cosmetics to simulate contaminated samples. DNA was extracted with seven extraction kits and then quantified by real-time qPCR. Results revealed differences in terms of cell recovery, DNA yield, and quality. The bead-beating approaches were the most suitable in our molecular workflow and lead to good quality DNA for analysis by qPCR within four hours. Combined with mechanical extraction, qPCR may represent an efficient and easy method for microorganism identification in cosmetics, and can be automated. This approach also is also applicable for the detection of probiotics used as beneficial biological components in cosmetic products. The results of our molecular method provided preliminary evidences for the rapid identification of cells (10–100) and nucleic acids in complex preparations employed for human health, in compliance with regulatory limits. The suggested methodology is easy, fast, and sensitive. Its scalability allows serial microbiological evaluation at every manufacturing step.
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