Packaging methods and storage duration affect essential oil content and composition of lemon verbena (Lippia citriodora Kunth.)

Abstract

Changes in essential oils (EOs) content and composition of lemon verbena leave at different packaging methods (packaged with air, nitrogen, or under vacuum) and during storage period (0, 2, 4, 6 and 8 months) were determined. All the samples were hydrodistilled every 2 months during storage for EO content evaluation. EO composition was determined by gas chromatography and gas chromatography–mass spectrometry. The results showed that by extending the storage period in all packaging methods, EO content was significantly decreased. Parallel to the increase in the storage duration in all packaging methods, citral content was decreased, whereas the amounts of limonene and 1,8‐cineole were increased. Packaging of lemon verbena leaves with nitrogen preserved the highest EO content during 8 months of storage and achieved the desired amounts of citral, limonene, and 1,8‐cineole. This investigation also showed camphene may be a useful marker for the indication of storage duration of lemon verbena.

In Vitro Evaluation of the Antioxidant, Cytoprotective, and Antimicrobial Properties of Essential Oil from Pistacia vera L. Variety Bronte Hull

“…This practice also led to a reduced formation of peroxidation, isomerization, or rearrangement of products due to temperature, light, and oxygen availability [29]. …”

Effect of cold plasma on essential oil content and composition of lemon verbena

“…Many spices are cultivated and harvested in poor sanitary conditions, laying the groundwork for potential microbial contamination (McKee, ). Also, the initial microbial load of spices depends on the conditions of production, harvesting, and initial processing, such as drying (Ebadi, Sefidkon, Azizi, & Ahmadi, ; Hertwig, Reineke, Ehlbeck, Erdoğdu, et al., ). Some microorganisms are known human pathogens, requiring methods of disinfection which minimize potential damage to active substances.…”

Systematic significance of the leaf cuticle of Hypodaphnis zenkeri (Engl.) Stapf (Lauraceae) and a record of its volatile organic compounds

“…Mahmoodi Sourestani et al (2014) reported that medicinal and aromatic plants (MAPs) are often stored for long periods before use, in order to manufacture various types of products. Phytochemical constituents can be affected (Asekun et al 2007, Capecka SYSTEMATIC SIGNIFICANCE OF LEAF CUTICLE OF HYPODAPHNIS ZENKERI et al 2005, Orav 2004, Stafford et al 2005 or there may be no significant differences in essential oils (volatile compounds) content of certain plants after a period of storage and even geographical locations (Ebadi et al 2017, Hillig and Mahlberg 2004, Jenkins and Patterson 1973, Rosado et al 2013. A followup work on differential variation of chemical constituents of dry (stored) and fresh leaves of Hypodaphnis zenkeri is desirable in the future.…”