WO2017200955A9 - Procédé de culture d'une plante de menthe hybride conçue pour la production d'une composition d'huile essentielle - Google Patents

Procédé de culture d'une plante de menthe hybride conçue pour la production d'une composition d'huile essentielle Download PDF

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WO2017200955A9
WO2017200955A9 PCT/US2017/032747 US2017032747W WO2017200955A9 WO 2017200955 A9 WO2017200955 A9 WO 2017200955A9 US 2017032747 W US2017032747 W US 2017032747W WO 2017200955 A9 WO2017200955 A9 WO 2017200955A9
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mass
hybrid mint
menthol
essential oil
mint plant
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PCT/US2017/032747
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English (en)
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WO2017200955A1 (fr
Inventor
Donald D. Roberts
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Essex Laboratories, Llc
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Priority to EP17726769.7A priority Critical patent/EP3452567A1/fr
Priority to BR112018073563A priority patent/BR112018073563A2/pt
Publication of WO2017200955A1 publication Critical patent/WO2017200955A1/fr
Publication of WO2017200955A9 publication Critical patent/WO2017200955A9/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H4/00—Plant reproduction by tissue culture techniques ; Tissue culture techniques therefor
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H5/00—Angiosperms, i.e. flowering plants, characterised by their plant parts; Angiosperms characterised otherwise than by their botanic taxonomy
    • A01H5/02—Flowers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H5/00—Angiosperms, i.e. flowering plants, characterised by their plant parts; Angiosperms characterised otherwise than by their botanic taxonomy
    • A01H5/04—Stems
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H5/00—Angiosperms, i.e. flowering plants, characterised by their plant parts; Angiosperms characterised otherwise than by their botanic taxonomy
    • A01H5/12—Leaves
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B9/00—Essential oils; Perfumes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B9/00—Essential oils; Perfumes
    • C11B9/02—Recovery or refining of essential oils from raw materials
    • C11B9/025—Recovery by solvent extraction

Definitions

  • Mint family species ⁇ Mentha spp. L. including peppermint and spearmint
  • Spearmint are important specialty crops valued for the essential oils produced in trichomes on the surface of leaves.
  • Spearmint is particularly known as a major source of carvone-rich essential oil for perfumery and flavoring industries and is grown worldwide. Spearmint is a fast-growing perennial crop capable of biosynthesizing significant amounts of essential oils containing a variety of ingredients, such as rosmarinic acid and other phenolics.
  • the essential oil of Mentha arvensis Linn, var Piperascens is a well-known source of the monoterpene 'menthol' used in the cosmetics, pharmaceutical, food, confectionery and liquor industries.
  • Different varieties of a given plant species may provide different ratios of ingredients within the essential oils they produce.
  • Different mint plant species and even different varieties of the same mint plant species provide different essential oil compositions that may vary widely.
  • the plant may be clonally propagated and used to produce essential oils of a consistent content profile for a sustained period over at least several harvests.
  • Mint plants are capable of producing underground rhizomes which can be used as propagates for field planting. Mint plants are also capable of rapidly producing rooted branches which can aid in faster propagations. In addition, mint plants are typically easy to cultivate, can sustain several harvests annually, and exhibit rapid re-growth after each harvest, making mint plants amenable to methods of producing essential oils of a consistent composition on an industrial scale.
  • a method of producing an essential oil includes extracting the essential oil from a hybrid mint plant known as 13-39-9.
  • the essential oil includes menthofuran and 1-menthol at a weight ratio of menthofuran to 1- menthol ranging from about 0.87: 1 to about 1.31 : 1.
  • a method of cultivating a hybrid mint plant known as 13-39-9 includes asexually propagating tip cuttings or stolon cuttings.
  • the hybrid plant includes an essential oil.
  • the essential oil includes menthofuran and 1-menthol at a weight ratio of menthofuran to 1-menthol ranging from about 0.87: 1 to about 1.31 : 1.
  • a hybrid mint plant known as 13-39-9 includes an essential oil.
  • the essential oil includes menthofuran and 1-menthol at a weight ratio of menthofuran to 1-menthol ranging from about 0.87: 1 to about 1.31 : 1.
  • FIG. 1 is a flow chart of a mint harvest and distillation process according to one aspect of the disclosure.
  • FIG. 2 is a schematic illustration of a steam extraction and distillation device.
  • a hybrid mint plant designated 13-39-9 methods of cultivating the hybrid mint plant, and methods of producing an essential oil using the hybrid mint plant are provided.
  • This new mint plant under greenhouse and field growing conditions, is a bush type plant with lateral branches at each node of the main stems.
  • the height of 'Pendleton or Kennewick' peppermint is slightly less than 'Black Mitcham' growing under similar conditions and will vary based on fertilizer, soil quality, and water application, amongst other known factors that affect growth patterns.
  • 'Kennewick or Pendleton' peppermint is between 0.3 and 0.5 m at mid-stem in width and 0.9 to 1.2 m in height under greenhouse environment.
  • Field grown 'Kennewick or Pendleton' peppermint has a width of 0.3 to 0.5 m and a height of 0.8 to 1.2 m.
  • Secondary and tertiary branching occurs to form a compact growth habit.
  • the main stem at mid-plant (approximately between the eleventh and twelfth node) is 4.9-5.4 mm in width.
  • the secondary and tertiary branch stems are 2.5-3.0 mm and 1.7-2.0 mm in width, respectively.
  • the stems are square, glabrous, and a green color that matches The Fifth Edition Royal Horticultural Society Colour Chart 143B green group, with a strong anthocyanin intensity.
  • Mature leaves at the bottom of the plant are ovate to elliptical as are leaves on secondary branch stems. Leaves on upper mature plants, both main and secondary stems, are more elliptical with an obtuse tip and oblique base.
  • the adaxial leaf surface is glabrous.
  • the abaxial leaf surface is sub-glabrous with oil glands distributed across the surface.
  • Mid-main stem leaf size at flowering is 28-32 mm in width and 56-60 mm in length.
  • Leaf size on secondary branches at flowering is 18-20 mm in width and 30- 35 mm in length.
  • Leaf petioles are sub-glabrous on the main stem leaves and petioles are light green in color that matches The Fifth Edition Royal Horticultural Society Colour Chart 138B green group, and are 11-12.5 mm in length while petioles on secondary branch stem leaves are 6-7 mm in length. Leaves on the mid-main stem and lower tend to be slightly lobed and denticulate while the leaves on the upper plant tend to be more dentate.
  • the main stem leaves are toothed having from 20-22 teeth on each side. Secondary branch leaves have 12-13 teeth on each side.
  • the adaxial leaf is dark green in color, ranging from The Fifth Edition Royal Horticultural Society Colour Chart 137B to 137C in the green group classification.
  • the color of the abaxial leaf surface is a green color that matches The Fifth Edition Royal Horticultural Society Colour Chart 144A, yellow-green group.
  • the leaf has 6-9 lateral veins, more or less in parallel off the main vein that runs from the petiole to the tip of the leaf. The veins are prominent in all leaves of 'Kennewick or Pendleton' peppermint.
  • the inflorescence is a cyme with capitate flowers developing at the nodes and tip of the stem.
  • the capitate flowers are 20-22.5 mm in width and 17.5-20 mm in length.
  • the flowers consist of five petals fused into a two lipped corolla. Both the inner and outer surfaces of the corolla is light violet in color ranging from The Fifth Edition Royal Horticultural Society Colour Chart 85C-85D in the violet group. Both the inner and outer surface of the calyx is generally yellow-green and is 143C-143D of The Fifth Edition Royal Horticultural Society Colour Chart, green group.
  • the gynoecium consists of a single pistil with two lobed stigma that is exserted. The androecium consists of four stamens, each with a distinct filament and anther. The bloom season for 'Kennewick or Pendleton' peppermint under field conditions is in July and August.
  • Seed produced by 'Kennewick or Pendleton' peppermint varies in color from brown in The Fifth Edition Royal Horticultural Society Colour Chart 177 A, greyed- orange group, to black in The Fifth Edition Royal Horticultural Society Colour Chart 203B, black group.
  • the seed are oval in shape with a width of 0.4 to 0.6 mm and a length of 0.6 to 0.8 mm.
  • Mint selection 13-39-9, denominated 'Kennewick or Pendleton' peppermint is a new Mentha sp. cultivar that produces an essential oil different in composition than commercially grown mint varieties.
  • the essential oil is similar to standard mint oil in components composition but differs in the typical ratio of components. Organoleptically it differs from typical Mentha piperita peppermint oil. It is more resistant to mint rust Puccinia menthae and more resistant to Verticillium dahliae mint wilt than current commercially grown varieties.
  • the hybrid mint plant designated 13-39-9 contains an essential oil that may be extracted using an extraction method as described below.
  • the essential oil is contained in at least one part of the hybrid mint plant or any portion thereof.
  • parts of the hybrid mint plant that may contain the essential oil include a leaf, a stem, a seed, a rhizome, a stolon, and/or a flower.
  • the essential oil includes 1-limonene, 1,8-cineole, 1- menthone, menthofuran, iso-menthone, 1-menthyl acetate, neo-menthol, ⁇ -caryophyllene, 1- menthol, and germacrene-D.
  • the menthofuran and 1-menthol in the essential oil has a weight ratio ranging from about 0.87: 1 to about 1.31 : 1.
  • the essential oil includes from about 22% mass to about 35% mass of menthofuran, from about 2.5% mass to about 3.8% mass of 1-limonene, from about 3.9% mass to about 5.9%) mass of 1-menthyl acetate, from about 1.2% mass to about 1.8% mass of iso- menthone, from about 12% mass to about 19% mass of 1-menthone, from about 1.6% mass to about 2.5%) mass of neo-menthol, from about 0.4% mass to about 0.8% mass of ⁇ - carophyllene, from about 20% mass to about 32% mass of 1-menthol, from about 0.9% mass to about 1.4% mass of germacrene-D, and from about 4.4% mass to about 6.7% mass of 1,8-cineole.
  • the essential oil includes from about 25% mass to about 32%) mass of menthofuran, from about 2.8% mass to about 3.5% mass of 1-limonene, from about 4.4%) mass to about 5.4% mass of 1-menthyl acetate, from about 2.7% mass to about 3.3%) mass of iso-menthone, from about 14% mass to about 17% mass of 1-menthone, from about 1.8% mass to about 2.3% mass of neo-menthol, from about 0.5% mass to about 0.7%) mass of ⁇ -carophyllene, from about 23% mass to about 29% mass of 1-menthol, from about 1.0% mass to about 1.3% mass of germacrene-D, and from about 5.0% mass to about 6.2%) mass of 1,8-cineole.
  • the essential oil includes from about 27% mass to about 30% mass of menthofuran, from about 3.0% mass to about 3.4% mass of 1- limonene, from about 4.6% mass to about 5.2 % mass of 1-menthyl acetate, from about 2.8%) mass to about 3.1% mass of iso-menthone, from about 14.1% mass to about 16.3% mass of 1-menthone, from about 1.9% mass to about 2.2% mass of neo-menthol, from about 0.5%) mass to about 0.6% mass of ⁇ -carophyllene, from about 24% mass to about 28%) mass of 1-menthol, from about 1.1% mass to about 1.3% mass of germacrene-D, and from about 5.3% mass to about 5.9% mass of 1,8-cineole.
  • the essential oil includes about 28.6% mass of menthofuran, about 30.3% mass of 1-limonene, about 4.9%) mass of 1-menthyl acetate, about 3% mass of iso-menthone, about 15.5% mass of 1-menthone, about 2.1% mass of neo-menthol, f about 0.6% mass of ⁇ -carophyllene, about 26.2%) mass of 1-menthol, about 1.2% mass of germacrene-D, and about 5.6% mass of 1,8-cineole.
  • the essential oil includes about 28.6% mass of menthofuran, about 30.3% mass of 1-limonene, about 4.9% mass of 1-menthyl acetate, about 3%) mass of iso-menthone, about 15.5% mass of 1-menthone, about 2.1% mass of neo-menthol, about 0.6% mass of ⁇ -carophyllene, about 26.2% mass of 1-menthol, about 1.2% mass of germacrene-D, and about 5.6% mass of 1,8-cineole.
  • the yield of essential oil extracted from the hybrid mint plant may vary without changing the essential oil profile, defined herein as the relative amounts of each of the ingredients within the essential oil extracted from the hybrid mint plant.
  • delaying harvest of the hybrid mint plant increases the yield of essential oil without significantly changing the essential oil profile. Pendleton peppermint was demonstrated to yield better than the Black Mitcham variety in field trials.
  • the essential oil profile may vary due to individual differences in any one or more of at least several factors including, but not limited to, environmental factors and the part of the hybrid mint plant from which the essential oil is extracted.
  • environmental factors include water, sunlight, latitude and day length, nutrients, planting density, microbial infections, and herbivorous organisms including insects.
  • plant stress caused by a deficiency in an environmental factor such as water or nutrients may cause a variation in the essential oil profile.
  • the variation in any one or more of the ingredients within the essential oil may vary by no more than 20%, no more than 10%, no more than 5%, no more than 2%), or no more than 1% relative to a characteristic essential oil profile, including, but not limited to, the essential oil profile for the 'Pendleton or Kennewick Peppermint' summarized in Table 1 below.
  • the essential oils produced using the disclosed methods are suitable for incorporation into a plurality of preparations including, but not limited to: cosmetic preparations, flavor preparations, pharmaceutical preparations, food preparations, tea preparations, air care products, and fragrance preparations.
  • cosmetic preparations include skin care products, hair care products, personal hygiene products, sun protection products, and oral and dental care products.
  • Non-limiting examples of a skin care products include soaps, lotions, body washes, bath gels, deodorants, antiperspirants, fragrances, perfumes, cosmetics or combinations thereof, such as antiperspirant/deodorants (ABDO).
  • Non-limiting examples of hair care products include shampoos, conditioners, pomades, brilliantines, set lotions, hair sticks, hair solids, hair oils, hair treatments, hair creams, hair tonics, hair liquids, hair sprays, bandolins, hair growth agents, hair dyes, or any combination thereof.
  • Non-limiting examples of personal hygiene products include shaving creams, shaving lotions, after shave lotions, soaps, shampoos, hair conditioners, deodorants, sun-screen products, bath salts and bath oils.
  • Non-limiting examples of sun protection products include sunscreens, sun sticks, suntan products, after-sun treatment products, artificial tanning products, skin-whitening products, and combinations thereof.
  • Non-limiting examples of oral and dental care products include dentifrices, mouthwashes, dental gels, lozenges, beads, gums, oral strips, mints, liquid toothpastes, sprays, paint-on gels, lip balms, whitening strips, breath strips, oral chews, and combinations thereof.
  • Non-limiting examples of flavor preparations include any composition added to impart or help impart a taste or aroma in food, and may be provided in a variety of forms including, but not limited to, liquid, paste, solid, in encapsulated form bound to or coated onto carriers/particles, and/or powder.
  • Non-limiting examples of pharmaceutical preparations include skin external preparations such as cataplasma and ointments, and oral medicines.
  • Non-limiting examples of food preparations include solid foods, liquid foods, drinks, emulsions, slurries, curds, dried food products, packaged food products, raw foods, processed foods, powders, granules, dietary supplements, edible substances/materials, chewing gums, or any combinations thereof.
  • Non-limiting examples of tea preparations include jasmine teas black teas, oolong teas, green teas, various herbal teas, and the like.
  • Non-limiting examples of air care products include air fresheners and scent delivery systems.
  • Non-limiting examples of fragrance preparations include any odor-releasing composition in a form of solids, waxes, films, sheets, fabrics, meshes, sponges, powders, liquids, colloids, emulsions, creams, gels, lotions, pastes, ointments, liniments, balms, sprays, roll-ons, or any combinations thereof.
  • the 'Pendleton or Kennewick Peppermint' variety is grown according to any existing mint cultivation practice without limitation.
  • the hybrid mint plant is cultivated by selecting a hybrid mint plant for cultivation, asexually propagating tip cuttings and/or stolon cuttings from the selected hybrid mint plant, and planting the propagated tip cutting and/or stolon cuttings in a field.
  • the hybrid mint plants in the field may be harvested repeatedly by cutting the plant above ground level, leaving a rhizome and/or stolon in the ground to grow a new mint plant for subsequent harvest in a similar manner.
  • the hybrid mint plants in the field may be initially grown by germinating hybrid mint plant seeds planted in the field.
  • the hybrid mint plant is produced by cross-breeding at least two or more mint varieties using a polycross method.
  • the polycross method single plants of each variety are positioned in a confined area and permitted to cross-pollinate. Any offspring plants resulting from the cross-pollination are assessed according to at least one selection factor.
  • suitable selection factors include plant vigor, essential oil composition profile, disease resistance, pest resistance, biomass as related to cost of distillation, concentration of essential oil, and any other suitable selection factor.
  • the vigor of an offspring plant is typically assessed in terms of one or more phenotypic traits relative to the other offspring plants.
  • phenotypic traits used to assess vigor include yield in biomass per plant, growth rate, time to first flowering, leaf-to-stem ratio, leaf color, leaf size, and any other phenotypic trait related to vigor.
  • disease resistance may be assessed by comparing the health of a group of offspring plants to a comparison group of plants of a known variety including, but not limited to, a commercial mint variety, that is known to be susceptible to a disease pathogen.
  • both groups of plants are grown at a location and/or under conditions known to contain a pathogen, including, but not limited to, a wilt fungus or a rust fungus.
  • an offspring plant is considered to be disease resistant to a pathogen if the group of offspring plants is observed to be healthier than the comparison group of plants known to be susceptible to the disease.
  • a subset of the offspring plants that possess one or more selection factors are selected for further propagation.
  • the subset of selected offspring plants may be about one plant, about two plants, about five plants, about ten plants, about twenty plants, about thirty plants, about fifty plants, about seventy plants, or about 100 plants.
  • the selected offspring plants are asexually propagated to further increase the number of candidate mint hybrid plants.
  • a portion of the offspring plants are selected for asexual propagation in larger fields using existing commercial mint cultivation methods.
  • about 1%, about 3%, about 5%, about 7%, or about 10% of the initial offspring plant varieties are selected for commercial cultivation.
  • the commercial cultivation includes asexually propagating stem tip cuttings and/or stolon cuttings of the selected hybrid mint variety according to existing standard practices.
  • the stem tip or stolon cuttings typically develop roots as a result of the asexual propagation and are subsequently planted in a field suitable for mint cultivation and subsequently develop into hybrid mint plants.
  • the growth of the hybrid mint plants is encouraged by providing needed environmental factors according to standard mint cultivation practices including, but not limited to: sun exposure, water, nutrients, herbicides and/or pesticides as needed.
  • the hybrid mint plants are harvested at first flowering.
  • the hybrid mint plants are harvested when less than about 10 %, least than about 20%, less than about 40%, less than about 60%, and less than about 75% of the plants exhibit flowering.
  • the hybrid mint plants are harvested at flower bloom of the plants.
  • harvesting the hybrid mint plants prior to reproduction prevents the occurrence of seeds that may introduce variation among the genotypes of the hybrid mint plants in the field and that may further introduce variation in the essential oil composition profile characterizing the essential oils extracted from the harvested hybrid mint plants.
  • essentially all hybrid mint plants harvested from the field are clones of the original hybrid mint plant selected as described above.
  • the hybrid mint plant is harvested by cutting the plant above ground level, leaving the rhizomes and/or stolons of the plant intact in the ground. In this aspect the rhizomes and/or stolons are then cultivated to produce a subsequent crop of hybrid mint plants according to existing mint cultivation practices. In one aspect, the hybrid mint plants may be repeatedly harvested in this manner to produce several crops in a growing season.
  • the rhizomes and/or stolons of the hybrid mint plant may also be removed from the soil and stored in a storage facility including, but not limited to a greenhouse or a plant nursery.
  • the rhizomes and/or stolons may be propagated to develop roots and subsequently replanted in a field to produce one or more additional crops of hybrid mint plants.
  • the hybrid mint plants may be allowed to set seed to produce a plurality of seeds.
  • the hybrid mint plants may be harvested and the seeds may be separated from the other plant parts for subsequent planting to produce a subsequent hybrid mint plant crop.
  • the seeds may be retained with the rest of the harvested hybrid mint plant for further processing to remove the essential oils.
  • the hybrid mint plants may be allowed to set seed after a first growing season that may include several harvests.
  • the hybrid mint plants may be allowed to set seed after a second growing season, a third growing season, or any other subsequent growing season without limitation.
  • the hybrid mint plants that were harvested by cutting above ground level may be allowed to cure for a curing period.
  • the curing period may extend for at least one day, at least two days, or at least five days or more.
  • the harvested hybrid mint plants may be cured in the field, or the harvested hybrid mint plants may be moved to another location for curing.
  • the cured hybrid mint crop is subjected to extraction of the essential oils using any known extraction or distillation method including, but not limited to, steam distillation as described below.
  • the essential oil composition is extracted from the harvested hybrid mint plants by any existing method including, but not limited to, a steam distillation process.
  • Steam distillation of essential oil from mint plants is well-known in the art and works on the principle that steaming the cut plants encourages release of the plants' essential oils via rupture of the plant's oil sacs which are taken up with the steam.
  • a boiler creates steam that is directed into a lower portion of a container containing plant parts of the harvested hybrid mint plants.
  • the harvested hybrid mint plants are mechanically reduced in size to the plant parts by any known mechanical process including, but not limited to, shredding, chopping, crushing, macerating, and any other suitable mechanical process.
  • the steam introduced into the lower portion of the container rises upward through the plant parts, inducing the movement of essential oil released upward from the plant parts with the steam.
  • the steam/essential oil mixture is removed from the container via a port formed in an upper portion of the container.
  • the steam/oil mixture removed from the container is directed through a condenser which causes the oil and water to separate, thereby allowing the essential oil to be recovered.
  • the essential oil is used as recovered for a variety of purposes described above.
  • the essential oil is subjected to additional processes to isolate one or more individual ingredients of the essential oil composition. Non-limiting examples of additional processes include distillation.
  • the extraction of the essential oil composition from the harvested hybrid mint plants may be performed using any suitable existing device without limitation.
  • the extraction of the essential oil composition from the harvested hybrid mint plants may be performed using a portable extraction device, such as a wheeled distillation tub configured to travel throughout the field containing harvested hybrid mint plants that have been previously cured.
  • a process 10 for extracting the essential oil from the hybrid mint plants is illustrated schematically in FIG. 1.
  • the mint plants are swathed at step 12 into windrows of mint hay in a conventional fashion according to standard mint agricultural practices.
  • the windrowed mint hay is then left to dry at step 14 in the field until a desired moisture content is achieved.
  • the windrowed mint hay is dried at step 14 for about two to three days and about 35-40% moisture content.
  • the windrowed mint hay is dried at step 14 for about 5 days or more to achieve a moisture content of less than about 15%, and preferably about 12%.
  • mint leaves and stems are put into the distilling tub 22 and then injected with steam 24 to begin the distillation process.
  • Vapor 26 containing the mint oils is transferred to a condenser 28 and the condensate 30 flows to a receiving can 32 where the mint oils 34 float to the surface for decanting into a mint oil collector.
  • Water sodden mint leaves or slugs 36 are removed for spreading back on the mint fields or for use as mulch.
  • the dried mint hay is threshed at step 16 by a combine to separate the dried mint leaves 18 from the mint stems 20.
  • the stripped mint stems are spread by the combine back onto the field.
  • the mint leaves are collected in the combine hopper and periodically transferred to a transport tub or truck for transfer to the distillery, or to storage for later distilling.
  • FIG. 2 a steam extraction and distillation device 100 used to extract the essential oils from the harvested mint plants is illustrated schematically at FIG. 2.
  • Candidate hybrid mint plants were produced using a polycross method. A relatively small number of single parent plants of known phenotype, such as essential oil composition profile or disease resistance were selected. The parent plants were planted in a plot and allowed to freely cross. Although not all parent plants crossed with one another, a generation of offspring resulting from the polycross event (i.e. "baby" plants) is assessed for vigor, oil chemistry and disease resistance, and individual candidate plants are selected for subsequent asexual propagation.
  • a polycross event i.e. "baby” plants
  • Table 1 summarizes a comparison of the components of the essential oil of 'Pendleton or Kennewick Peppermint' compared the essential oil profile of the other commercial mint variety.
  • the values listed in Table 1 are percentages based upon the analysis of the respective mint oils by gas chromatography.
  • the 'Black Mitcham' oil samples analyzed were selected to be typical of what is produced by mint growers.
  • 'Pendleton or Kennewick Peppermint' oil samples were distilled from plants grown in test plots in the field under standard cultivation conditions and practices.
  • the essential oil extracted from 'Kennewick or Pendleton Peppermint' has the same components as that of commercial oil produced by 'Black Mitcham' peppermint as illustrated in Table 1. However, the ratio of oil components differs between the commercial peppermint oil and that of 'Kennewick or Pendleton' peppermint.
  • the sensory profile of the 'Pendleton or Kennewick Peppermint' included a robust mint piperita profile with strong herbal and oily notes along with a light mentholic aspect.
  • the sensory profile included tarry, sweet, and coconut on aging (oxidation).
  • the high menthofuran levels are advantageous in blending with other mint oils to create sweet, piperita-like mint oils.
  • the isomethone is notably lower in this variety than Black Mitcham, also lending to a sweet character.
  • Table 2 is a summary of the essential oil profiles for the Pendleton or Kennewick Peppermint, the Mentha piperita and Mentha arvensis.
  • the low and high values of any entries within Table 2 represent the lowest and highest observed values measured amongst the essential oils extracted from the three harvests.
  • beta-pinene 0.9-1.3 0.5-1

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  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Biotechnology (AREA)
  • Cell Biology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne une plante de menthe hybride caractérisée par un profil de composition d'huile essentielle, des procédés de culture de ladite plante de menthe hybride, et des procédés de production d'une composition d'huile essentielle ayant ledit profil de composition d'huile essentielle à l'aide de ladite plante de menthe hybride.
PCT/US2017/032747 2016-05-18 2017-05-15 Procédé de culture d'une plante de menthe hybride conçue pour la production d'une composition d'huile essentielle WO2017200955A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17726769.7A EP3452567A1 (fr) 2016-05-18 2017-05-15 Procédé de culture d'une plante de menthe hybride conçue pour la production d'une composition d'huile essentielle
BR112018073563A BR112018073563A2 (pt) 2016-05-18 2017-05-15 método para cultivo de planta de hortelã híbrida designada como 13-39-9 para produção de composição de óleo essencial

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201614999510A 2016-05-18 2016-05-18
US14/999,510 2016-05-18

Publications (2)

Publication Number Publication Date
WO2017200955A1 WO2017200955A1 (fr) 2017-11-23
WO2017200955A9 true WO2017200955A9 (fr) 2017-12-28

Family

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PCT/US2017/032747 WO2017200955A1 (fr) 2016-05-18 2017-05-15 Procédé de culture d'une plante de menthe hybride conçue pour la production d'une composition d'huile essentielle

Country Status (4)

Country Link
EP (1) EP3452567A1 (fr)
BR (1) BR112018073563A2 (fr)
CL (1) CL2018003276A1 (fr)
WO (1) WO2017200955A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USPP13720P2 (en) * 2001-11-06 2003-04-08 Premier Botanicals Limited Mint plant named ‘Aquamint’
USPP16474P3 (en) * 2003-12-29 2006-04-25 Council Of Scientific And Industrial Research Mint plant named ‘Cim Indus’
USPP25440P3 (en) * 2013-02-04 2015-04-14 Essex Laboratories, Inc. Mint plant ‘Canyon Mint’
USPP25415P3 (en) * 2013-02-27 2015-04-07 Essex Laboratories, Inc. Mint plant named ‘Chelan Mint’

Also Published As

Publication number Publication date
CL2018003276A1 (es) 2019-06-21
EP3452567A1 (fr) 2019-03-13
BR112018073563A2 (pt) 2019-03-19
WO2017200955A1 (fr) 2017-11-23

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