Patents by Inventor Tadayoshi HIRAI
Tadayoshi HIRAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11873521Abstract: The purpose of the present invention is to: determine the structure of a novel steviol glycoside which is detected from species containing a large amount of Reb. C (also referred to as dulcoside B), and a trace amount of which is capable of influencing the quality of taste; and understand the taste characteristics of said steviol glycoside. The present invention provides a compound represented by formula (1) or a salt thereof, or a hydrate thereof.Type: GrantFiled: March 28, 2018Date of Patent: January 16, 2024Assignee: SUNTORY HOLDINGS LIMITEDInventors: Kazunari Iwaki, Katsuro Miyagawa, Eiichiro Ono, Tadayoshi Hirai, Misa Ochiai, Koji Nagao, Soichiro Urai, Takehiro Watanabe, Kohki Fujikawa
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Publication number: 20230340429Abstract: The purpose of the present invention is to provide a steviol glycoside hexose transferase, and a method for producing a steviol glycoside that contains glucose and/or rhamnose using said enzyme. The present invention provides a steviol glycoside hexose transferase, and a method for producing a steviol glycoside that contains glucose and/or rhamnose using said enzyme. The present invention also provides a transformant into which a steviol glycoside hexose transferase gene has been introduced, and a method for preparing said transformant.Type: ApplicationFiled: May 1, 2023Publication date: October 26, 2023Applicant: SUNTORY HOLDINGS LIMITEDInventors: Eiichiro ONO, Misa OCHIAI, Kazunari IWAKI, Tadayoshi HIRAI
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Publication number: 20230265530Abstract: A method of screening for a stevia plant with high steviol glycoside content, that includes detecting from the genome of a test stevia plant the presence and/or the absence of the following genetic feature: (1) homozygous for the allele wherein the base at the position corresponding to position 290 of SEQ ID NO: 1 is T, and the presence and/or the absence of the following genetic feature: (2) homozygous or heterozygous for the allele wherein the base at the position corresponding to position 40 of SEQ ID NO: 2 is A.Type: ApplicationFiled: May 11, 2021Publication date: August 24, 2023Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI, Saori TAKEYAMA, Katsuro MIYAGAWA
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Patent number: 11732313Abstract: The present invention provides a high sweet content stevia plant having a variation at a portion corresponding to SEQ ID NO: 1, a method of producing or screening for the same, etc.Type: GrantFiled: July 30, 2019Date of Patent: August 22, 2023Assignee: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi Hirai, Kazunari Iwaki, Katsuro Miyagawa, Naoko Okitsu, Saori Takeyama
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Publication number: 20230225273Abstract: A method of screening for a stevia plant with high rebaudioside M content ratio, that includes detecting from a test stevia plant the presence and/or absence of at least one of (1) and (2), and at least one of (3) to (7): (1) homozygous for the allele wherein position 290 of SEQ ID NO: 1 is T; (2) homozygous for the allele wherein position 33 of SEQ ID NO: 2 is A; (3) homozygous for the allele wherein position 44 of SEQ ID NO: 3 is T; (4) homozygous for the allele wherein position 40 of SEQ ID NO: 4 is T; (5) homozygous for the allele wherein position 48 of SEQ ID NO: 5 is C; (6) homozygous for the allele wherein positions 55-72 of SEQ ID NO: 6 are deleted; (7) homozygous for the allele wherein position 50 of SEQ ID NO: 7 is A.Type: ApplicationFiled: May 11, 2021Publication date: July 20, 2023Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI, Saori TAKEYAMA, Katsuro MIYAGAWA
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Patent number: 11702641Abstract: The purpose of the present invention is to provide a steviol glycoside hexose transferase, and a method for producing a steviol glycoside that contains glucose and/or rhamnose using said enzyme. The present invention provides a steviol glycoside hexose transferase, and a method for producing a steviol glycoside that contains glucose and/or rhamnose using said enzyme. The present invention also provides a transformant into which a steviol glycoside hexose transferase gene has been introduced, and a method for preparing said transformant.Type: GrantFiled: December 26, 2017Date of Patent: July 18, 2023Assignee: SUNTORY HOLDINGS LIMITEDInventors: Eiichiro Ono, Misa Ochiai, Kazunari Iwaki, Tadayoshi Hirai
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Publication number: 20230180690Abstract: Provided is a plant having at least one of genetic characteristics (A)-(E) below. (A) Alleles in which the base at the position corresponding to position 40 of SEQ ID:1 is C are homozygous or heterozygous. (B) Alleles in which the base at the position corresponding to position 21 of SEQ ID:2 is T are homozygous or heterozygous. (C) Alleles in which the base at the position corresponding to position 28 of SEQ ID:3 is T are homozygous or heterozygous. (D) Alleles in which the base at the position corresponding to position 59 of SEQ ID:4 is C are homozygous or heterozygous. (E) Alleles in which the base at the position corresponding to position 64 of SEQ ID:5 is T are homozygous or heterozygous.Type: ApplicationFiled: May 11, 2021Publication date: June 15, 2023Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI, Saori TAKEYAMA, Katsuro MIYAGAWA
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Publication number: 20230172136Abstract: The present invention provides a Stevia plant comprising useful steviol glycoside such as rebaudioside D at higher content as compared with known Stevia species. The present invention also provides a method of producing such a Stevia plant, and a dried leaf and an extract obtainable from such a plant.Type: ApplicationFiled: May 11, 2021Publication date: June 8, 2023Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI, Saori TAKEYAMA, Katsuro MIYAGAWA
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Patent number: 11447765Abstract: The purpose of the present invention is to provide a protein, said protein having an activity of synthesizing rhamnose from glucose, and a polynucleotide encoding the same. Provided are a rhamnose synthase derived from stevia and a method for producing rhamnose from glucose using a gene. Also provided is a method for producing a steviol glycoside using the rhamnose synthase derived from stevia.Type: GrantFiled: April 11, 2018Date of Patent: September 20, 2022Assignee: SUNTORY HOLDINGS LIMITEDInventors: Eiichiro Ono, Misa Ochiai, Kazunari Iwaki, Tadayoshi Hirai
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Publication number: 20220273008Abstract: The present invention provides a plant body containing a compound represented by Formula (1), or a salt or a hydrate thereof: [in the formula: (i) R1 represents Xyl(1-2)Glc1- and R2 represents Glc(1-2)[Glc(1-3)]Glc1- or (ii) R1 represents Glc(1-2)[Glc(1-3)]Glc1- and R2 represents Xyl(1-2)[Glc(1-3)]Glc1- (where Glc stands for glucose and Xyl stands for xylose)].Type: ApplicationFiled: July 30, 2020Publication date: September 1, 2022Applicant: SUNTORY HOLDINGS LIMITEDInventors: Soichiro URAI, Kazunari IWAKI, Katsuro MIYAGAWA, Tadayoshi HIRAI, Koji NAGAO, Yoshiaki YOKOO, Takehiro WATANABE, Kohki FUJIKAWA
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Publication number: 20220256902Abstract: The present invention provides a novel steviol glycoside containing xylose. According to the present invention, there is provided a compound represented by formula (1), or a salt or hydrate thereof. (In formula, (i) R1 represents Xyl(1-2)Glc1- and R2 represents Glc(1-2)[Glc(1-3)]Glc1-; or (ii) R1 represents Glc(1-2)[Glc(1-3)]Glc1- and R2 represents Xyl(1-2)[Glc(1-3)]Glc1-, where Glc represents glucose and Xyl represents xylose.Type: ApplicationFiled: July 30, 2020Publication date: August 18, 2022Applicant: SUNTORY HOLDINGS LIMITEDInventors: Soichiro URAI, Kazunari IWAKI, Katsuro MIYAGAWA, Tadayoshi HIRAI, Koji NAGAO, Yoshiaki YOKOO, Takehiro WATANABE, Kohki FUJIKAWA
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Publication number: 20220217933Abstract: A high rebaudioside C-content type, non-genetically modified Stevia plant that has a higher content of rebaudioside C than wild-type Stevia varieties, more specifically at least 20% higher content. A method for producing such a high rebaudioside C-content type, non-genetically modified Stevia plant; and dried leaves obtained from such a plant.Type: ApplicationFiled: March 25, 2022Publication date: July 14, 2022Applicant: SUNTORY HOLDINGS LIMITEDInventors: Kazunari IWAKI, Eiichiro ONO, Tadayoshi HIRAI, Katsuro MIYAGAWA
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Publication number: 20220201955Abstract: The present invention provides a stevia plant having a low ability to form flower buds as compared with the wild type stevia species. The present invention also provides a method of producing such a stevia plant having a low ability to form flower buds, and an extract or a steviol glycoside purified product obtainable from such a plant.Type: ApplicationFiled: April 7, 2020Publication date: June 30, 2022Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI
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Publication number: 20220177901Abstract: The present invention provides a stevia plant having a low ability to form pollens as compared with the wild type stevia species. The present invention also provides a method of producing such a stevia plant having a low ability to form pollens, and an extract or a steviol glycoside purified product obtainable from such a plant.Type: ApplicationFiled: April 7, 2020Publication date: June 9, 2022Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI
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Patent number: 11284576Abstract: An objective of the present invention is to provide a Stevia plant having a high content of rebaudioside C. The present invention provides a high rebaudioside C-content type, non genetically modified Stevia plant that has a higher content of rebaudioside C than wild-type Stevia varieties, more specifically at least 20% higher content. The present invention further provides: a method for producing such a high rebaudioside C-content type, non genetically modified Stevia plant; and dried leaves obtained from such a plant.Type: GrantFiled: December 26, 2017Date of Patent: March 29, 2022Assignee: SUNTORY HOLDINGS LIMITEDInventors: Kazunari Iwaki, Eiichiro Ono, Tadayoshi Hirai, Katsuro Miyagawa
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Publication number: 20220087124Abstract: The present invention provides a high rebaudioside D-content stevia plant comprising rebaudioside D at higher content as compared with the wild type stevia species. The present invention also provides a method of producing such a high rebaudioside D-content stevia plant, and a dried leaf and an extract obtainable from such a plant.Type: ApplicationFiled: December 26, 2019Publication date: March 24, 2022Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Katsuro MIYAGAWA
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Publication number: 20220078989Abstract: The present invention provides a high broussonetine-content stevia plant comprising broussonetine at higher content as compared with the wild type stevia species. The present invention also provides a method of producing such a high broussonetine-content stevia plant, and a dried leaf and an extract obtainable from such a plant.Type: ApplicationFiled: December 26, 2019Publication date: March 17, 2022Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Katsuro MIYAGAWA
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Publication number: 20220061248Abstract: The present invention provides a low tyramine-content Stevia plant having a lower tyramine content as compared with the wild type Stevia species. The present invention also provides a method of producing such a low tyramine-content Stevia plant, and an extract and a steviol glycoside purified product obtainable from such a plant.Type: ApplicationFiled: December 26, 2019Publication date: March 3, 2022Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Katsuro MIYAGAWA
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Publication number: 20210246517Abstract: The present invention provides a high sweet content stevia plant having a variation at a portion corresponding to SEQ ID NO: 1, a method of producing or screening for the same, etc.Type: ApplicationFiled: July 30, 2019Publication date: August 12, 2021Applicant: SUNTORY HOLDINGS LIMITEDInventors: Tadayoshi HIRAI, Kazunari IWAKI, Katsuro MIYAGAWA, Naoko OKITSU, Saori TAKEYAMA
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Publication number: 20200281141Abstract: The present invention provides a high rebaudioside M content non-genetically modified stevia plant comprising rebaudioside M at higher content as compared with the wild type stevia species. The present invention also provides a method of producing such a high rebaudioside M content non-genetically modified stevia plant, and a dry leaf obtainable from such a plant.Type: ApplicationFiled: October 12, 2018Publication date: September 10, 2020Applicant: SUNTORY HOLDINGS LIMITEDInventors: Kazunari IWAKI, Katsuro MIYAGAWA, Tadayoshi HIRAI, Naoko OKITSU, Saori TAKEYAMA