Essential oils and infusions from commercial peppermint sachets (CPS), and noncommercial genuine peppermint (NCP) and cornmint (NCC) samples were analyzed by GC/MS and LC/MS. Minimum inhibitory concentration (MIC) of mint oils against Fusarium moniliforme, Aspergillus niger and Aspergillus fumigates was determined. Antioxidant potential was monitored by total phenolic content (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and soybean oil oxidation tests. CPS and NCC oils had lower menthofuran content than NCP. Mint oils did not show a uniform standard of antifungal activity and they had the modest reducing ability. CPS and NCC infusions showed higher IC50 and lower TPC than NCP ones. In the soybean oxidation test, mint oils presented prooxidant behavior. CPS infusions showed antioxidant potential significantly (P<0.05, Tukey) lower than that from NCC and NCP infusions. NCP infusions were more efficient in delaying propagation reaction than NCC ones. This may be attributed to higher amount of rosmarinic acid and hesperidin in NCP.

Localizing and measuring aerosol deposition is essential to gain knowledge on contaminants and their transfer mechanisms, cleanliness of people's environments and consequently on health. However, examining aerosol deposition is challenging, as it is based on several different mechanisms linked to aerosols, surfaces and air flow properties . Many techniques exist to measure aerosol deposition, but only a few techniques directly measure aerosol deposition without modifying the deposition itself. This paper gathers and details the existing measurement techniques, which directly measure a depositing flux of aerosol particles on indoor surfaces. They are classified according to whether they measure a mass or a number surface deposition concentration. Among the mass concentration measurement techniques, a few are the most commonly used in the literature and are well-known, whereas the family of micro-sensors was recently developed and continue to be improved in laboratory experiments. Micro-sensors request to know more about theoretical and technical aspects for building and implementing. The features of micro-sensors entail generally an ability to carry in situ and close to real-time measurement. The number concentration measurement techniques are essentially based on optical systems. Commercial devices apart, these techniques are adaptable and their configurations depend on the experimental constraints. They also require some theoretical consideration depending on which kind of aerosol deposition is observed.On the contrary, the commercial devices are turnkey solutions and are developed for specific domains, such as cleanroom deposition measurement, in order to provide user-friendly devices and an easier reached repeatability in the measurement protocol.

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