Effect of Drying Methods on Essential Oil Content and Composition of<i>Mentha longifolia</i>(L.) Hudson

Saeidi, Keramatollah; Ghafari, Zohre; Rostami, Sajad

doi:10.1080/0972060x.2015.1108246

Cited by 26 publications

(12 citation statements)

References 21 publications

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“…, and 50°C. [18] Similar observation was also reported by Saeidi et al for Mentha longifolia (L.) Hudson dried in oven at 40°C and 80°C, [19] Argyropoulos and Müller for convective drying of lemon balm, [12] Shahhoseini et al for oven-dried lemon verbena (Lippia citriodora), [20] and Hamrouni Sellami et al for oven and infrared drying of Laurus nobilis L. leaves. [21] It is worth noting that, unlike the findings reported before, some researchers indicated that an increment in essential oil yield of aromatic plants such as Satureja hortensis could be induced by increasing drying temperature.…”

Section: Effect Of Drying Methods On the Essential Oil Yieldsupporting

confidence: 79%

Quantity and chemical composition of essential oil of peppermint (Mentha × piperita L.) leaves under different drying methods

Beigi

Torki-Harchegani

Pirbalouti

2018

International Journal of Food Properties

106

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Section: Effect Of Drying Methods On the Essential Oil Yieldsupporting

confidence: 79%

Quantity and chemical composition of essential oil of peppermint (Mentha × piperita L.) leaves under different drying methods

Beigi

Torki-Harchegani

Pirbalouti

2018

International Journal of Food Properties

106

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“…1). These results are in agreement with other findings on Coriandrum sativum L. (Pirbalouti et al 2017), Kelussia odoratissima (Mirhosseini et al 2015), Mentha longifolia L. (Saeidi et al 2016) and Artemisia afra Jacq. (Ashafa and Pitso2014) and in contrast to findings on Laurus nobilis (Sellami et al 2011), which may be due to differences in plant species, temperatures applied and the type of secretory structures.…”

Section: Discussionsupporting

confidence: 94%

Essential oil content and components, antioxidant activity and total phenol content of rosemary (Rosmarinus officinalis L.) as affected by harvesting time and drying method

2022

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Background Preharvest and postharvest conditions of medicinal plants strongly affect the quantity and quality of their secondary metabolites. Here, the effect of different harvesting times (5 am, 12 noon and 5 pm) and different drying methods (shade at 25 °C, oven at 60 °C and microwave at 180 W) on essential oil content and components, total phenol content and antioxidant activity of rosemary was monitored. Results Harvesting time only had a significant effect on the essential oil content and components; however, all investigated traits were significantly affected by drying methods. The essential oil content of plants harvested at 5 am and 5 pm was higher than those harvested at 12 noon. The highest amount of essential oil was obtained from shade (0.85–1.12%) and oven (0.66–1.04%) dried plants, respectively. Total phenol and antioxidant activity of oven dried plants were significantly lower than shade and microwave-dried plants. The number, type and amount of essential oil components were affected by harvesting time and drying method. α-Pinene, verbenone and camphor were the major components of the essential oils. Oxygenated monoterpenes were the main group of essential oil compounds in all treatments. The results of biplot and cluster analysis, based on the measured traits, placed the treatments in three separate clusters; I: shade dried, II: oven-dried, and III: microwave-dried plants. Conclusion Generally, to obtain the higher essential oil content, phenol and antioxidant activity, harvesting at 5 am and 5 pm and also shade drying are recommended; however, for reaching to essential oil with specific quality, different harvesting time and drying method could be used.

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“…This would prove that dry- the higher loss of volatiles were also observed for the OD samples of oregano (Figiel et al, 2010) and Dracocephalum kotschyi Boiss. (Samadi et al, 2018), peppermint leaves (Salarikia, Miraei Ashtiani, & Golzarian, 2017), and Mentha longifolia L. (Saeidi, Ghafari, & Rostami, 2016 It was also reported in previous studies that temperature enhancement for VOD and MW treatments would cause higher rates of reduction in the EO content of some plant species such as Dracocephalum kotschyi Boiss.…”

Section: Essential Oil Yieldmentioning

confidence: 66%

Changes in chemical composition and biological activity of essential oil from Thomson navel orange (Citrus sinensis L. Osbeck) peel under freezing, convective, vacuum, and microwave drying methods

Farahmandfar

Tirgarian

Dehghan

et al. 2019

Food Science & Nutrition

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Thomson navel orange peel is a by‐product of citrus processing, which contains high levels of bioactive compounds advantageous to human health, nevertheless due to its high moisture content it is exceedingly perishable. Drying is among the most common preservation methods, which could prolong the plants shelf‐life via reducing their moisture value. Taking this into account, depending on their type and conditions, drying techniques could degrade plant heat‐sensitive metabolites and lead to quality decline. Therefore, the goal of this paper was to investigate the influence of seven drying methods named sun, shade, oven, vacuum oven, microwave, and freeze‐drying with different drying conditions on the physical properties, for example, bulk density and color (L*, a*, b*, ΔE, and browning index (BI)) and essential oil characteristics such as extraction yield, chemical composition, antioxidant (total phenolic content (TPC), DPPH, and FRAP essays), and antimicrobial (MIC and MBC) activities of Thomson peel and determine the superior drying procedure. Results showed that freeze‐dried sample had the highest retention of L* (48.54) and b* (49.00) values, lowest BI (216.11) as well as highest EO extraction yield (6.90%), TPC (60.10 GAE/100 g), FRAP (0.52% at 80 mg/ml), and lowest IC50 (5.00 mg/ml), MIC and MBC compared with other drying treatments. Therefore, it could be inferred that freeze‐drying is the most efficient drying approach in respect of preserving both physical and EO attributes of Thomson peel.

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Effect of Drying Methods on Essential Oil Content and Composition ofMentha longifolia(L.) Hudson

Cited by 26 publications

References 21 publications

Quantity and chemical composition of essential oil of peppermint (Mentha × piperita L.) leaves under different drying methods

Quantity and chemical composition of essential oil of peppermint (Mentha × piperita L.) leaves under different drying methods

Essential oil content and components, antioxidant activity and total phenol content of rosemary (Rosmarinus officinalis L.) as affected by harvesting time and drying method

Changes in chemical composition and biological activity of essential oil from Thomson navel orange (Citrus sinensis L. Osbeck) peel under freezing, convective, vacuum, and microwave drying methods

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