JP2017222743A - Electromagnetic wave absorbent, sunscreen agent, optical component, glasses, and method for producing electromagnetic wave absorbent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic wave absorbent that absorbs ultraviolet rays by a naturally-occurring component.SOLUTION: The electromagnetic wave absorbent includes the genus Lactobacillus which absorbs ultraviolet rays.SELECTED DRAWING: None

Description

  The present invention relates to an electromagnetic wave absorber, a sunscreen agent, an optical component, glasses, and a method for producing an electromagnetic wave absorber.

  Sunlight contains ultraviolet rays (UV). The wavelength band of ultraviolet rays is generally set to 100 nm or more and 400 nm or less, although there is a slight difference in definition depending on organizations. Ultraviolet rays are classified into an ultraviolet A wave (UV-A), an ultraviolet B wave (UV-B), and an ultraviolet C wave (UV-C) based on a difference in biological influence due to a difference in wavelength. The ultraviolet A wave is also called A-region ultraviolet light or long wavelength ultraviolet light, and its wavelength band is 315 nm or more and 400 nm or less. The ultraviolet B wave is also called a B region ultraviolet ray or a medium wavelength ultraviolet ray, and the wavelength band is 280 nm or more and less than 315 nm. The ultraviolet C wave is also called a C region ultraviolet ray or a short wavelength ultraviolet ray, and the wavelength band is 100 nm or more and less than 280 nm.

  Ultraviolet A waves penetrate deep into the skin and into the dermis, causing wrinkles, sagging, and both red and black sunburns called sunburn. In addition, ultraviolet A waves are absorbed by various molecules in the living body, and oxidative damage is caused to membrane lipids, proteins, and DNA through the resulting active oxygen, and is involved in skin aging. Ultraviolet B waves have a shallow penetration into the skin but have a significant effect on the skin surface, causing both spots, wrinkles and sunburn and subsequent black sunburn. Furthermore, the ultraviolet B wave is absorbed by DNA in the nucleus of the cell, damages the DNA, and causes skin cancer.

  Ultraviolet rays tend to be absorbed by the oxygen and ozone layers as the wavelength decreases, although the damage to the biological material increases as the wavelength decreases. The ultraviolet C wave is absorbed by the oxygen and ozone layers and is hardly observed on the ground. Ultraviolet B waves are also absorbed by the oxygen and ozone layers, but some reach the ground. Most of the ultraviolet A waves reach the ground. Although the ultraviolet A wave has a longer wavelength than the ultraviolet B wave, it occupies most of the ultraviolet rays reaching the ground. Therefore, damage to the biological material due to ultraviolet A waves cannot be ignored. For example, the contribution ratio for sunburn is 70% to 80% for ultraviolet B waves and 20% to 30% for ultraviolet A waves.

  Some conventional sunscreens contain organic compounds such as oxybenzone and avobenzone that absorb ultraviolet A waves. However, these organic compounds are not naturally derived components, and are considered to have dangers such as causing skin irritation and rough skin. On the other hand, Patent Document 1 describes an ultraviolet absorber having an absorption peak of an ultraviolet absorption spectrum in a wavelength band of 320 nm to 400 nm, which includes the genus Methylobacterium. Further, Patent Document 2 removes cells from a fermentation broth obtained by co-fermenting rice, papaya, seaweed, yeast, and casei, plantarum, and lactis species of the genus Lactobacillus. The resulting melanoidin is described.

Japanese Patent No. 5751517 JP 2013-133423 A

  Naturally derived UV absorbers that are not limited to the genus Methylobacterium are desired. This invention is made | formed in view of such a situation, and it aims at providing the manufacturing method of the electromagnetic wave absorber which absorbs an ultraviolet-ray with a natural origin component, a sunscreen agent, an optical component, glasses, and an electromagnetic wave absorber. And

  The electromagnetic wave absorber according to one aspect of the present invention includes a genus Lactobacillus that absorbs at least ultraviolet rays. Moreover, the sunscreen agent which concerns on 1 side of this invention is equipped with said electromagnetic wave absorber. Moreover, the optical component which concerns on 1 side of this invention is equipped with a transparent member and said electromagnetic wave absorber arrange | positioned on a transparent member. Furthermore, a pair of glasses according to one aspect of the present invention includes the optical component described above as a lens. Furthermore, the manufacturing method of the electromagnetic wave absorber which concerns on 1 side of this invention comprises fermenting a plant and obtaining the fermented liquid provided with the Lactobacillus genus which absorbs an ultraviolet-ray at least.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the manufacturing method of the electromagnetic wave absorber, sunscreen agent, optical component, glasses, and electromagnetic wave absorber which absorb an ultraviolet-ray with a natural origin component.

It is a graph and a table | surface which show the analysis result of the microbe contained in the fermented liquor which concerns on Example 1. FIG. 2 is a graph showing an ultraviolet absorption spectrum of a fermentation broth according to Example 1. It is the graph and table | surface which show the analysis result of the microbe contained in the fermented liquor which concerns on Example 2. FIG. It is a graph which shows the ultraviolet absorption spectrum of the fermented liquor which concerns on Example 2. FIG. 4 is a graph showing an ultraviolet absorption spectrum of a commercially available sunscreen cream A according to Example 3. 4 is a graph showing an ultraviolet absorption spectrum of a commercially available sunscreen cream B according to Example 3. 4 is a graph showing an ultraviolet absorption spectrum of a Lactobacillus suspension according to Example 3. 5 is a table and a graph showing the absorbance of a Lactobacillus suspension according to Example 4.

  Hereinafter, embodiments of the present invention will be described in detail. The following embodiments exemplify apparatuses and methods for embodying the technical idea of the present invention, and the technical idea of the present invention specifies combinations of components and the like as follows. Not what you want. The technical idea of the present invention can be variously modified within the scope of the claims.

(First embodiment)
The electromagnetic wave absorber according to the first embodiment of the present invention absorbs at least ultraviolet rays and contains a genus Lactobacillus. Lactobacillus is a kind of lactobacilli and is a Gram-positive facultative anaerobe. Lactobacillus ferments sugar to produce lactic acid. Although the Lactobacillus genus also inhabits the body of animals including humans, the Lactobacillus genus according to the first embodiment is preferably a plant-derived Lactobacillus genus.

  For example, the Lactobacillus genus according to the first embodiment is extracted by fermenting a plant. Plants include, but are not limited to, mugwort, tomorrow, life-prolonging grass, and cocoa. The genus Lactobacillus derived from Artemisia includes, for example, parafarraginis species, parabuchneri species, buchneri species, and harbinensis species. The Lactobacillus genus derived from tomorrow includes, for example, the vini species and the nagerii species. The electromagnetic wave absorber according to the first embodiment may include a plurality of Lactobacillus species.

  Lactobacillus absorbs at least part of the wavelength band of ultraviolet and visible light. For example, the wavelength band of ultraviolet rays absorbed by Lactobacillus is 200 nm or more and 400 nm or less. The wavelength band of the ultraviolet A wave absorbed by Lactobacillus is 315 nm or more and 400 nm or less. The wavelength band of the ultraviolet B wave absorbed by Lactobacillus is 280 nm to 315 nm. The wavelength band of the ultraviolet C wave absorbed by Lactobacillus is 200 nm or more and 280 nm. The wavelength band of visible light absorbed by Lactobacillus is 400 nm or more, 800 nm or less, 700 nm or less, 600 nm or less, or 500 nm or less, and includes blue light.

  For example, the genus Lactobacillus derived from Artemisia absorbs ultraviolet A wave and visible light of 340 nm to 500 nm. Moreover, the Lactobacillus genus derived from tomorrow absorbs ultraviolet A wave, ultraviolet B wave, ultraviolet C wave and visible light of 230 nm or more and 500 nm or less.

  The peak in the absorption spectrum of Lactobacillus is in the ultraviolet wavelength band. The half-value width of the absorption spectrum by Lactobacillus is 20 nm or more within the wavelength band of ultraviolet rays. For example, the half-value width of the absorption spectrum by Artemisia derived Lactobacillus is 20 nm or more, 30 nm or more, or 40 nm or more within the wavelength band of ultraviolet rays. Further, the half-value width of the absorption spectrum by Lactobacillus derived from tomorrow is 20 nm or more, 30 nm or more, 40 nm or more, 60 nm or more, 80 nm or more, 100 nm or more, 120 nm or more, 140 nm or more, or 160 nm or more within the ultraviolet wavelength band. is there.

  The half-value width of the absorption spectrum by Lactobacillus is 20 nm or more within the wavelength band of the ultraviolet A wave. For example, the half-value width of the absorption spectrum by the genus Lactobacillus is 20 nm or more, 30 nm or more, or 40 nm or more within the wavelength band of the ultraviolet A wave. Moreover, the half width of the absorption spectrum by the Lactobacillus genus derived from tomorrow is 20 nm or more, 30 nm or more, 40 nm or more, or 60 nm or more within the wavelength band of the ultraviolet A wave.

  The half width of the absorption spectrum by Lactobacillus is 100 nm or more, 150 nm or more, or 200 nm or more within the wavelength band of visible light and ultraviolet A wave. The slope of the peak in the absorption spectrum due to the genus Lactobacillus tends to be steep on the short wavelength side and gentle on the long wavelength side. Therefore, the ultraviolet absorption effect is exhibited over a wide wavelength band from the peak of the absorption spectrum toward the longer wavelength side of the ultraviolet A wave.

  Artemisia-derived Lactobacillus tends to absorb more of the short wavelength band on the ultraviolet side than the long wavelength band in the visible light wavelength band, and absorbs violet and blue light and transmits red and green light. There is a tendency. Therefore, when using the genus Lactobacillus derived from Artemisia, the transmitted light of the electromagnetic wave absorber according to the first embodiment tends to appear from yellow to brown.

  The electromagnetic wave absorber according to the first embodiment includes a genus Lactobacillus at a concentration of, for example, 0.001% by weight or more, 0.005% by weight or more, or 0.01% by weight or more. When Lactobacillus is included at a concentration of 0.001% by weight or more, the ultraviolet absorption effect tends to be exhibited. The electromagnetic wave absorber according to the first embodiment includes, for example, a genus Lactobacillus at a concentration of 20% by weight or less, 15% by weight or less, or 10% by weight or less, but may include a genus Lactobacillus at a higher concentration. . However, when the concentration of Lactobacillus is high, the viscosity tends to increase. The content of the genus Lactobacillus in the electromagnetic wave absorber according to the first embodiment is appropriately determined according to the intended ultraviolet absorption. In addition, the conventional mugwort cream, tomorrow leaf cream, etc. have the microbial cells removed or substantially no microbial cells.

  Lactobacillus genus tends to absorb ultraviolet rays more than, for example, heat-treated dead bacteria than live bacteria. Therefore, the electromagnetic wave absorber according to the first embodiment may contain a killed bacterium of the genus Lactobacillus. The Lactobacillus genus may be a dried microbial cell. By making the Lactobacillus genus into a dried microbial cell, it can be stably stored for a long period of time.

  Ultraviolet rays tend to penetrate the skin at longer wavelengths. Even in the ultraviolet A wave band, longer wavelengths tend to penetrate the skin more easily. On the other hand, the Lactobacillus genus according to the first embodiment has a broad half-value width of the absorption spectrum and exhibits an ultraviolet absorption effect over a wide wavelength band from the peak of the absorption spectrum toward the long wavelength side. Has the effect of suppressing the penetration of the skin. Therefore, the electromagnetic wave absorber according to the first embodiment can be used as a sunscreen agent (sunscreen agent) that is externally applied to the skin and hair and suppresses inflammation caused by sunburn. Moreover, the electromagnetic wave absorber which concerns on 1st Embodiment by using a plant-derived Lactobacillus genus has little burden on skin.

  The electromagnetic wave absorber which concerns on 1st Embodiment may be mix | blended with skin care cosmetics, such as a lotion, a milky lotion, a cream, a spray, and a cosmetic liquid. Moreover, the electromagnetic wave absorber according to the first embodiment may be blended in makeup cosmetics such as foundation cosmetics, foundations, lipsticks, face colors, and eyeliners.

  The electromagnetic wave absorber according to the first embodiment includes, in addition to the genus Lactobacillus, pigments, liquid fats and oils, solid fats and oils, waxes, hydrocarbons, higher fatty acids, higher alcohols, esters, silicones, anionic surfactants, and cationic surfactants Agents, amphoteric surfactants, nonionic surfactants, humectants, water-soluble polymers, thickeners, coating agents, sequestering agents, lower alcohols, polyhydric alcohols, sugars, amino acids, organic amines, Depending on the purpose, it may appropriately contain cosmetic and pharmaceutical ingredients such as pH adjusters, skin nutrients, vitamins, antioxidants, fragrances, powders, color materials, and water.

  Moreover, according to the objective, the electromagnetic wave absorber which concerns on 1st Embodiment may contain the organic compound type ultraviolet absorber, the inorganic compound type ultraviolet scattering agent, etc. other than the Lactobacillus genus suitably. For example, you may use together the ultraviolet absorber which does not absorb an ultraviolet A wave, and the electromagnetic wave absorber which concerns on 1st Embodiment which absorbs an ultraviolet A wave.

  The electromagnetic wave absorber which concerns on 1st Embodiment is manufactured by fermenting a plant and obtaining the fermented liquor containing Lactobacillus genus. When fermenting a plant, sugars such as salt and molasses are added to the plant. The fermentation temperature is, for example, 30 ° C. The resulting fermented broth has a hydrogen ion index (pH) of around 4.0. The obtained fermentation broth may be heated to make the genus Lactobacillus contained in the fermentation broth dead. Alternatively, the fermentation broth may be spray-dried to obtain a dried bacterial cell of the genus Lactobacillus.

(Second Embodiment)
In the second and subsequent embodiments, description of matters common to the first embodiment is omitted, and only different points will be described. In particular, the same operation effect by the same configuration will not be sequentially described for each embodiment.

  The electromagnetic wave absorber containing Lactobacillus may be blended as a UV-resistant material in products other than the skin external preparation, such as paints, dyes, pigments, various resins, synthetic rubbers, latexes, films, and fibers.

  For example, the optical component according to the second embodiment includes a transparent member and a coating layer that is coated on the transparent member and is blended with the electromagnetic wave absorber described in the first embodiment. The transparent member is made of a transparent material such as glass and resin. The optical component according to the second embodiment can be used, for example, as a lens for glasses or a light-transmitting plate for televisions and computer displays.

  As described in the first embodiment, since the electromagnetic wave absorber containing the Lactobacillus genus absorbs blue light, the optical component according to the embodiment does not only emit ultraviolet light but also blue light is incident on the eye. Suppress. Therefore, there is an effect of suppressing eye fatigue. Moreover, since the electromagnetic wave absorber which concerns on embodiment absorbs blue light instead of reflecting, blueness does not arise in the lens of glasses.

  Embodiments of the present invention will be described below. However, the present invention is not limited to the following examples.

(Example 1: Lactobacillus derived from Artemisia)
In the leaves of mugwort, the number of lactic acid bacteria is maximized during a total of 2 hours, 1 hour before and after the sunrise time. In addition to this time zone, lactic acid bacteria are decreased and photosynthetic bacteria are increased. Therefore, a portion of about 20 cm from the tip of the mugwort leaf was collected during these 2 hours. Immediately put the collected 6.3 kg mugwort leaves into the first pickled barrel with a plastic bag inside, sprinkle the mugwort leaves with 3.2 kg molasses and 0.6 kg crude salt, The mouth of the plastic bag was closed and sealed. From the top of the plastic bag, we put a heavy stone and soaked mugwort leaves.

  A few days after the pickled soup rose above the mugwort leaves, the weight was removed. Next, 10 L of water not containing chlorine for rinsing and washing was put into the second pickle barrel, and the pickled leaves of mugwort and 10 kg of pickled juice were put into the water. Further, a third pickle barrel was prepared, and a wire mesh filter was placed on the opening of the third pickle barrel. The mugwort leaves were taken out from the second pickle barrel little by little while washing with hands, and the mugwort leaves were lightly pressed with a palm on the wire mesh filter above the opening of the third pickle barrel, and the pickled juice was squeezed.

  After squeezing all the leaves of mugwort, the pickled juice remaining in the second pickled juice was filtered through a wire mesh filter. Next, molasses (Hateruma brown sugar) was dissolved in the pickled juice in the third pickled barrel so that the final concentration was 10% by weight, and the crude salt was dissolved in the final concentration of 3% by weight. Then, fermentation was started by setting the ambient temperature of the third pickled barrel to about 30 ° C. First, large foams were confirmed, gradually changing to fine foams, and finally the foams settled. About one week after the start of fermentation, the pH when foaming subsided was around 3.8. The pickled soup at this time was used as a mugwort fermentation broth. Part of the obtained mugwort fermented liquid was heated at 70 ° C. for 30 minutes to obtain a heat treated mugwort fermented liquid in which the bacteria were killed. Furthermore, the heat-treated mugwort fermented liquid was filtered through a filter having an opening of 0.8 μm to obtain a sterilized liquid from which the bacteria were removed.

  When the mugwort fermented liquor that has not been heat-treated is analyzed by a next-generation sequencer (MiSeq, Illumina), as shown in FIG. Was included. The next-generation sequencer is also called a high-throughput sequencer. Moreover, the numerical value in the table | surface of FIG. 1 reflects the number of microbes of the bacterial species contained in the mugwort fermentation liquid.

  Moreover, as shown in FIG. 2, the mugwort fermented liquid, the heat treated mugwort fermented liquid, and the sterilized liquid were analyzed with a spectroscope (UV-2600, Shimadzu Corporation). The fermentation broth absorbed ultraviolet A wave and visible light, specifically, electromagnetic waves having a wavelength of 350 nm or more. Moreover, the heat-treated mugwort fermented liquid absorbed more ultraviolet rays and visible light than the mugwort fermented liquid. On the other hand, the sterilizing solution hardly absorbed ultraviolet rays and visible rays. From these results, it was shown that the Lactobacillus genus derived from mugwort absorbs ultraviolet rays and visible light.

(Example 2: Lactobacillus genus derived from tomorrow)
In tomorrow, the number of lactic acid bacteria is supposed to be maximized during a total of 2 hours, 1 hour before and after the sunrise time. In addition to this time zone, lactic acid bacteria are decreased and photosynthetic bacteria are increased. Therefore, the leaf stems of tomorrow's shoots were collected during these 2 hours. Immediately put the collected 6.3 kg of tomorrow leaves into the first pickled barrel with a plastic bag inside, sprinkle 3.2 kg of molasses and 0.6 kg of coarse salt on tomorrow leaves, The mouth was closed and sealed. From the top of the plastic bag, we put a heavy stone and dipped tomorrow leaves.

  A few days after the pickled soup reached the top of tomorrow, the weight was removed. Next, 10 L of water not containing chlorine for rinsing and washing was placed in the second pickled barrel, and tomorrow's pickled vegetables and 10 kg of pickled soup were placed in the water. Further, a third pickle barrel was prepared, and a wire mesh filter was placed on the opening of the third pickle barrel. Tomorrow leaves were gradually removed from the second pickle barrel while washing with hands, and the tomato juice was squeezed by gently pressing the tomorrow leaves against the wire mesh filter on the opening of the third pickle barrel.

  After all the tomorrow leaves were squeezed, the pickled juice remaining in the second pickled juice was filtered through a wire mesh filter. Next, molasses was dissolved in the pickled juice in the third pickled barrel so that the final concentration was 10% by weight, and the crude salt was dissolved so that the final concentration was 3% by weight. Then, fermentation was started by setting the ambient temperature of the third pickled barrel to about 30 ° C. First, large foams were confirmed, gradually changing to fine foams, and finally the foams settled. The pH when foaming subsided was around 4.0. The pickled soup at this time was used as tomorrow leaf fermentation broth. A part of the obtained tomorrow fermentation broth was heated at 70 ° C. for 30 minutes to obtain a heat-treated tomorrow fermentation broth that killed the bacteria. Furthermore, the heat-treated tomorrow leaf fermentation broth was filtered through a filter having an aperture of 0.8 μm to obtain a sterilization solution from which the bacteria were removed.

  When the tomato fermentation broth that had not been heat-treated was analyzed with a next-generation sequencer (MiSeq, Illumina), as shown in FIG. 3, the tomorrow fermentation broth contained vini species, nagerii species, and the like. In addition, the numerical value in the table | surface of FIG. 3 reflects the microbe number of the microbe species contained in the tomorrow leaf fermentation liquid.

  In addition, as a result of analyzing the ultraviolet absorption spectrum of the tomorrow fermentation liquid, the heat-treated tomorrow fermentation liquid, and the sterilization liquid with a spectroscope (UV-2600, Shimadzu Corporation), as shown in FIG. And the heat-treated tomorrow fermentation broth absorbed ultraviolet A wave, ultraviolet B wave, ultraviolet C wave, and visible light, specifically, electromagnetic waves having a wavelength of 220 nm or more. Moreover, the heat-treated tomorrow's fermentation broth absorbed more ultraviolet rays and visible light than the tomorrow's fermentation broth. On the other hand, the sterilizing solution hardly absorbed ultraviolet rays and visible rays. From these results, it was shown that the Lactobacillus genus derived from tomorrow absorbs ultraviolet rays and visible rays.

(Example 3: Lactobacillus suspension)
The heat-treated mugwort fermented liquid produced in Example 1 was spray-dried to obtain a dried bacterial cell of the genus Lactobacillus. The obtained dried bacterial cell product was suspended in water and glycerin so that the dried bacterial cell product was 10 parts by weight, and a suspension of the genus Lactobacillus according to Example 3 was obtained. The ultraviolet absorption spectra of the commercially available sunscreen creams A and B and the suspension of the genus Lactobacillus according to Example 3 were analyzed with a spectrometer (UV-2600, Shimadzu Corporation).

  As a result, as shown in FIGS. 5 and 6, the commercially available sunscreen creams A and B absorb the ultraviolet A wave, but the absorbance was low in the wavelength band of 350 nm or more. On the other hand, as shown in FIG. 7, the Lactobacillus suspension according to Example 3 had high absorbance in the wavelength band of 350 nm or more. Even in the ultraviolet A wave band, the longer the wavelength, the more the ultraviolet light penetrates into the skin, but it was shown that Lactobacillus significantly absorbs such a long wavelength ultraviolet light as compared with a commercially available sunscreen cream. .

(Example 4: Concentration of Lactobacillus genus)
Suspensions containing dried Lactobacillus microbial cells obtained in the same manner as in Example 3 at various concentrations as shown in FIG. 8 were prepared, and the absorbance of ultraviolet rays at a wavelength of 365 nm was measured by a spectrometer (UV-2600, Shimadzu Corporation). We analyzed with. As a result, the suspension containing 0.001% by weight or more of Lactobacillus showed practical absorbance. When the Lactobacillus concentration exceeded 20% by weight, no change in absorbance was observed.

  The embodiments and examples described above are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be changed / improved without departing from the spirit thereof, and the present invention includes equivalents thereof. In other words, those in which those skilled in the art appropriately modify the design of each embodiment and example are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements and the like included in each embodiment and example are not limited to those illustrated, but can be changed as appropriate. In addition, each embodiment and example is an exemplification, and it is needless to say that a partial replacement or combination of configurations shown in different embodiments is possible, and these also fall within the scope of the present invention as long as they include the features of the present invention. Is included.

Claims (26)

  An electromagnetic wave absorber comprising the genus Lactobacillus, which absorbs at least ultraviolet rays.   The electromagnetic wave absorber according to claim 1, which absorbs at least a part of a wavelength band of ultraviolet rays and visible rays.   The electromagnetic wave absorber according to claim 1 or 2, which absorbs at least part of a wavelength band of 200 nm or more and 800 nm or less.   The electromagnetic wave absorber according to any one of claims 1 to 3, which absorbs at least a part of a wavelength band of ultraviolet A waves.   The electromagnetic wave absorber according to any one of claims 1 to 4, wherein a peak in the absorption spectrum is in an ultraviolet wavelength band.   The electromagnetic wave absorber according to claim 5, wherein the slope of the peak is steep on the short wavelength side and gentle on the long wavelength side.   The electromagnetic wave absorber according to claim 5 or 6, wherein a half-value width of the absorption spectrum is 20 nm or more within a wavelength band of ultraviolet A waves.   The electromagnetic wave absorber according to any one of claims 5 to 7, wherein a half width of the absorption spectrum is 100 nm or more in a wavelength band of visible light and ultraviolet A wave.   The electromagnetic wave absorber according to any one of claims 1 to 8, wherein the Lactobacillus genus is derived from a plant.   The electromagnetic wave absorber according to any one of claims 1 to 9, wherein the Lactobacillus genus is derived from Artemisia.   The electromagnetic wave absorber according to any one of claims 1 to 9, wherein the Lactobacillus genus is derived from tomorrow.   The species of the genus Lactobacillus is at least one selected from the group consisting of Parafarraginis species, parabuchneri species, buchneri species, harbinensis species, vini species, and nagelii species, according to any one of claims 1 to 11. Electromagnetic wave absorber.   The electromagnetic wave absorber according to any one of claims 1 to 12, wherein the Lactobacillus genus is killed.   The electromagnetic wave absorber according to any one of claims 1 to 13, wherein the Lactobacillus genus is heat-treated.   The electromagnetic wave absorber according to any one of claims 1 to 14, wherein the Lactobacillus genus is a dried microbial cell product.   The electromagnetic wave absorber according to any one of claims 1 to 15, comprising the Lactobacillus genus at a concentration of 0.001% by weight or more.   A sunscreen comprising the electromagnetic wave absorber according to any one of claims 1 to 16. A transparent member;
The electromagnetic wave absorber according to any one of claims 1 to 16, disposed on the transparent member,
An optical component comprising:   The optical component according to claim 18, which absorbs blue light.   Glasses comprising the optical component according to claim 18 or 19 as a lens.   A method for producing an electromagnetic wave absorber, comprising obtaining a fermentation broth comprising a genus Lactobacillus that ferments a plant and absorbs at least ultraviolet rays.   The method for producing an electromagnetic wave absorber according to claim 21, wherein the plant is mugwort or tomorrow.   The electromagnetic wave absorber according to claim 21 or 22, wherein the species of the genus Lactobacillus is at least one selected from the group consisting of Parafarraginis species, parabuchneri species, buchneri species, harbinensis species, vini species, and nagelii species. Production method.   The method for producing an electromagnetic wave absorber according to any one of claims 21 to 23, further comprising killing the Lactobacillus genus contained in the fermentation broth.   The method for producing an electromagnetic wave absorbent according to any one of claims 21 to 24, further comprising heating the fermentation broth.   The method for producing an electromagnetic wave absorber according to any one of claims 21 to 25, further comprising drying the fermentation broth to obtain a dried bacterial cell product.