In vitroantioxidant potentials and chemistry of essential oils and oleoresins from fresh and sun-driedMentha longifoliaL.

Abstract

The present study was designed to assess differences in chemical composition and antioxidant potential of essential oils and oleoresins from fresh and sun-dried Mentha longifolia L. Essential oils and oleoresins were obtained by hydrodistillation and solvent extraction (n-hexane and ethanol), respectively. The chemical profile was evaluated by using gas chromatography (GC) and GC coupled to mass spectrometry (GC-MS). Antioxidant effectiveness was examined by five different methods, namely the ferric thiocyanate (FTC) method, the 2,2'-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging method, determination of the metal chelating power, and determination of the peroxide and thiobarbituric acid values in mustard oil at 0.02% concentration. The chemical composition was dominated by the presence of piperitenone oxide, an oxygenated monoterpene whose composition varied from 23.2% to 88.5% in both essential oils and oleoresins. Based on the antioxidant potential of essential oils, oleoresins and synthetic antioxidants can be sorted in the following descending order: butylatedhydroxytoluene > dried mint essential oil > fresh mint essential oil > propyl gallate > fresh mint ethanol oleoresin > dried mint ethanol oleoresin > dried mint hexane oleoresin > fresh mint hexane oleoresin. The drying process has a significant influence on the qualitative and quantitative content of the extracted substances.

Solar Drying of Herbal Wealth in Eastern Himalaya: A Review

“…The yield and chemical composition of essential plants square measure associated with sprees of internal and external factors, as an example, the drying (Singh et al, 2015). Drying is the most used way to preserve quality of aromatic and medicinal plants.…”

“…The methods choice of drying in an optimal temperature is a central economic and ecological criterion. Most of the studies focus on the drying of many plant species with presence of essential oil, revealing the proper temperature to increase the oil yield for various species (Singh et al, 2015). Singh et al (2019) have done an experiment to analyze the drying capacity of open sun drying method and evacuated tube collector based solar dryer.…”

“…An experiment on drying application on techniques to check final yield and chemical constituents of oil obtained from Mentha longifolia leaves (Singh et al, 2015). Generally, the increased temperature influences the quality as well as the amount of essential volatile oil in medicative and aromatic plants not solely throughout the drying process, the active ingredients present in plant material reduces as the storage time is increased.…”

Mentha longifolia (L.) Hudson subsp. Typhoides (Briq.) Harley var. Typhoides’in Hidroksil radikali ve Hipokloröz asiti Süpürme Aktivitesi

“…Mentha'nın yaprak çiçek ve sapları bitkisel çay olarak tüketimlerinin yanı sıra, dünya genelinde uçucu yağ, likör ve şekerleme endüstrisinde lezzetlendirmede, parfüm üretiminde medikal amaçlı olarak kullanılmaktadır [15]. Yine farklı Mentha türlerinin antiinflmatuar, karminatif, antiemetik, antispazmodik etkileri nedeniyle bulantı, bronşit, şişkinlik anoreksiya, ülseratif kolit ve karaciğer şikâyetlerinin tedavisinde önemli olduğu bildirilmiştir [16]. Bu özelliklerden yola çıkılarak çalışmamızda M. longifolia subsp.…”

Toxicity, Deterrent and Repellent Activities of Four Essential Oils on Aphis punicae (Hemiptera: Aphididae)

“…The season and the location have strong effects on the chemical composition of Eos obtained from the same plant organ, especially the leaves. Therefore, the biological properties, such as insecticidal, antioxidant, and anti-inflammatory activity, are variable [ 20 ]. In the current study, we aimed to extract EOs from four species of aromatic plants— Mentha piperita, Mentha longifolia, Salvia officinalis, and Salvia Rosmarinus —grown at high altitudes in the Taif region, KSA, and to evaluate the aphicidal, deterrent, and repellent activities of the EOs against A. punicae .…”