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Monographs of fragrance chemicals and extracts that have caused contact allergy / allergic contact dermatitis
Published in Anton C. de Groot, Monographs in Contact Allergy, 2021
In Japan, three patients with allergic contact dermatitis from peppermint oil were patch tested with individual ingredients of the oil. It was established that the allergens were piperitone, menthol or pulegone (no further details known, article in Japanese) (1). Piperitone has been found in a maximum concentration of 5.4% in commercial peppermint oils (3).
Aquatic Plants Native to Europe
Published in Namrita Lall, Aquatic Plants, 2020
Isa A. Lambrechts, Lydia Gibango, Antonios Chrysargyris, Nikolaos Tzortzakis, Namrita Lall
The essential oils of the plant revealed high antimicrobial activity against pathogens such as E. coli, Salmonella typhimurium, Listeria monocytogenes, Aspergillus flavus, Fusarium oxysporum, and A. niger (Mikaili et al. 2013). Mimica et al. (2003) revealed that the essential oil has significantly higher fungicidal and fungistatic activity than the fungicides such as bifonazole. Piperitone oxide, isolated from M. longifolia, was also found to have insecticidal properties (Cordero et al. 2012). Additionally, extracts from the plant collected from Morocco were tested against human immunodeficiency virus type 1 (HIV-1), and the results showed that non-toxic concentrations of ethyl acetate and methanol extracts significantly inhibited the HIV-1BaL infection by about 40% and 55%, respectively. It has been reported that the activity might be accredited to the flavonoid content of the plant and was presented as a potential anti-HIV agent (Amzazi et al. 2003).
Chemical composition and insecticidal properties of essential oils against diamondback moth (Plutella xylostella L.)
Published in Toxin Reviews, 2020
Rajkesh Koundal, Shudh Kirti Dolma, Gopi Chand, Vijai K. Agnihotri, S. G. Eswara Reddy
The EO from M. spicata leaves had carvone (67.4%) as the major component followed by limonene (10.9%), cis-dihydrocarvone (3.3%), 1,8-cineole (2.4%) and myrcene (2.3%). Sixteen components identified which accounted for 92.7% of the total oil. In the present study, the percent composition of carvone (67%) and limonene (10.9%) is comparable to the reported by other studies (Hussain et al. 2010; Koliopoulos et al. 2010; Boukhebti 2011). EO from leaves of M. longifolia characterized by piperitone (37.8%) as the principal oil component along with piperitenone oxide (31%), β-caryophyllene (7%), germacrene-D (3.4%) and β- farnesene (1.9%). Eighteen components identified in the EO sample which accounted for 90.4% of the total oil. Regarding the chemical composition of this species literature reports, we had observed a huge difference. Hussain et al. (2010) reported piperitenone oxide (60–64.6%), Mkaddem et al. (2009) reported pulegone (54%) as a major constituent. However, Koliopoulos et al. (2010) had reported piperitenone oxide (33%), 1,8-cineole (24.5%) and trans-piperitone epoxide (17%) as major compounds from this species.
Quorum sensing inhibitors: a patent review (2014–2018)
Published in Expert Opinion on Therapeutic Patents, 2018
Xin Chen, Likun Zhang, Mingxiang Zhang, Huayu Liu, Panrui Lu, Kejiang Lin
Fujinaka et al. revealed that 0.01% piperitone inhibits 90.3% of V. harveyi with no significant effect on Porphyromonas gingivalis, Fusobacterium nucleatum, Actinomyces viscosus and Streptococcus mutans. It has been speculated that piperitone may be used to treat dental infection [54].