Abstract
Essential oils (EOs) of Mentha spicata var. crispa (Benth.) Danert and M. × piperita var. citrata (Ehrh.) Briq. and EO components are widely used in medicine, pharmaceuticals, cosmetics, hygiene products, the food industry, and other fields, and have a high commercial value. The variety Mentha spicata var. crispa is also used as an ornamental plant due to its distinctive curled leaves. Studying the influence of growing conditions and harvest timing on EO yield and the major compound concentrations is one of the key research directions for Mentha species, aimed at the ascertainment of the ways of increasing EO production and quality. Gas chromatography analysis of the component composition of EOs from leaves of Mentha spicata var. crispa “Kurchavaya” (MscK) showed that it remained stable both in July and September, with carvone predominating (81% and 85%, respectively). In contrast, the EO composition from M. × piperita var. citrata “Apelsinovaya” (MpcA) leaves changed in the course of the vegetation period. In July, menthofuran dominated (30%), while in September, linalool and its acetate were predominant (34% and 47%, respectively), which was typical for this chemotype. At the same time, the content of EOs and the density of glandular trichomes (GTs) (the OE storage sites) in MscK were higher in July and decreased by September, whereas in MpcA, both EO content and the number of GTs increased from July to September. These changes may have been caused by temperature fluctuations. Thus, MscK proved to be more resistant to environmental factors than MpcA.
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Claims 10
Claim · model-written summary
The essential oil composition of Mentha spicata var. crispa Kurchavaya remained stable in July and September, with carvone predominating.
- Taxon
- Mentha spicata var. crispa
Mentha spicatae0 - Material
- Kurchavayae0
- Organ / stage
- leavese0
- Outcome
- component composition of EOse0
- Value
- 81% and 85%e0
- Qualifier
- remained stable both in July and September, with carvone predominatinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gas chromatography analysis of the component composition of EOs from leaves of Mentha spicata var. crispa “Kurchavaya” (MscK) showed that it remained stable both in July and September, with carvone predominating (81% and 85%, respectively)”
Claim · model-written summary
The essential oil composition of M. × piperita var. citrata Apelsinovaya leaves changed over the vegetation period.
- Taxon
- M. × piperita var. citrata
Mentha aquatica var. citratae1 - Material
- Apelsinovayae1
- Organ / stage
- leavese1
- Outcome
- EO compositione1
- Qualifier
- changed in the course of the vegetation periode1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In contrast, the EO composition from M. × piperita var. citrata “Apelsinovaya” (MpcA) leaves changed in the course of the vegetation period”
Claim · model-written summary
In July, menthofuran dominated the essential oil of M. × piperita var. citrata (30%).
- Taxon
- M. × piperita var. citrataMentha aquatica var. citratae1
- Material
- Apelsinovayae1
- Outcome
- menthofuran dominatede2
- Value
- 30%e2
- Setting
- Julye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In contrast, the EO composition from M. × piperita var. citrata “Apelsinovaya” (MpcA) leaves changed in the course of the vegetation period”
e2“In July, menthofuran dominated (30%), while in September, linalool and its acetate were predominant (34% and 47%, respectively), which was typical for this chemotype”
Claim · model-written summary
In September, linalool and its acetate were predominant in the essential oil of M. × piperita var. citrata (34% and 47%).
- Taxon
- M. × piperita var. citrataMentha aquatica var. citratae1
- Material
- Apelsinovayae1
- Outcome
- linalool and its acetate were predominante2
- Value
- 34% and 47%e2
- Setting
- Septembere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In contrast, the EO composition from M. × piperita var. citrata “Apelsinovaya” (MpcA) leaves changed in the course of the vegetation period”
e2“In July, menthofuran dominated (30%), while in September, linalool and its acetate were predominant (34% and 47%, respectively), which was typical for this chemotype”
Claim · model-written summary
Essential oil content of MscK was higher in July and decreased by September.
- Taxon
- Mentha spicata var. crispaMentha spicatae0
- Material
- MscKe3
- Outcome
- content of EOse3
- Direction
- highere3
- Qualifier
- decreased by Septembere3
- Setting
- Julye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gas chromatography analysis of the component composition of EOs from leaves of Mentha spicata var. crispa “Kurchavaya” (MscK) showed that it remained stable both in July and September, with carvone predominating (81% and 85%, respectively)”
e3“At the same time, the content of EOs and the density of glandular trichomes (GTs) (the OE storage sites) in MscK were higher in July and decreased by September, whereas in MpcA, both EO content and the number of GTs increased from July to September”
Claim · model-written summary
Glandular trichome density of MscK was higher in July and decreased by September.
- Taxon
- Mentha spicata var. crispaMentha spicatae0
- Material
- MscKe3
- Outcome
- density of glandular trichomes (GTs)e3
- Direction
- highere3
- Qualifier
- decreased by Septembere3
- Setting
- Julye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gas chromatography analysis of the component composition of EOs from leaves of Mentha spicata var. crispa “Kurchavaya” (MscK) showed that it remained stable both in July and September, with carvone predominating (81% and 85%, respectively)”
e3“At the same time, the content of EOs and the density of glandular trichomes (GTs) (the OE storage sites) in MscK were higher in July and decreased by September, whereas in MpcA, both EO content and the number of GTs increased from July to September”
Claim · model-written summary
Essential oil content of MpcA increased from July to September.
- Taxon
- M. × piperita var. citrataMentha aquatica var. citratae1
- Material
- MpcAe3
- Outcome
- EO contente3
- Direction
- increasede3
- Qualifier
- from July to Septembere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In contrast, the EO composition from M. × piperita var. citrata “Apelsinovaya” (MpcA) leaves changed in the course of the vegetation period”
e3“At the same time, the content of EOs and the density of glandular trichomes (GTs) (the OE storage sites) in MscK were higher in July and decreased by September, whereas in MpcA, both EO content and the number of GTs increased from July to September”
Claim · model-written summary
The number of glandular trichomes of MpcA increased from July to September.
- Taxon
- M. × piperita var. citrataMentha aquatica var. citratae1
- Material
- MpcAe3
- Outcome
- the number of GTse3
- Direction
- increasede3
- Qualifier
- from July to Septembere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In contrast, the EO composition from M. × piperita var. citrata “Apelsinovaya” (MpcA) leaves changed in the course of the vegetation period”
e3“At the same time, the content of EOs and the density of glandular trichomes (GTs) (the OE storage sites) in MscK were higher in July and decreased by September, whereas in MpcA, both EO content and the number of GTs increased from July to September”
Claim · model-written summary
Essential oil composition changes in these Mentha varieties may have been caused by temperature fluctuations.
- Taxon
- Mentha spicata var. crispaMentha spicatae0
- Outcome
- changese4
- Qualifier
- temperature fluctuationse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gas chromatography analysis of the component composition of EOs from leaves of Mentha spicata var. crispa “Kurchavaya” (MscK) showed that it remained stable both in July and September, with carvone predominating (81% and 85%, respectively)”
e4“These changes may have been caused by temperature fluctuations”
Claim · model-written summary
MscK proved more resistant to environmental factors than MpcA.
- Taxon
- Mentha spicata var. crispaMentha spicatae0
- Material
- MscKe5
- Outcome
- resistant to environmental factorse5
- Direction
- moree5
- Comparator
- MpcAe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gas chromatography analysis of the component composition of EOs from leaves of Mentha spicata var. crispa “Kurchavaya” (MscK) showed that it remained stable both in July and September, with carvone predominating (81% and 85%, respectively)”
e5“Thus, MscK proved to be more resistant to environmental factors than MpcA”