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특허 상세정보

Process for the production of a natural antioxidant obtained from tea leaves

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C07D-311/04    C09K-015/34    C09K-015/08   
미국특허분류(USC) 252/398 ; 252/404 ; 549/399
출원번호 US-0613093 (1984-05-22)
우선권정보 JP-0094069 (1983-05-30)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 22  인용 특허 : 7
초록

A process for producing a natural antioxidant from tea leaves comprising treating said tea leaves with a solvent selected from the group consisting of hot water (preferably 80°C.-100°C.), a 40-75% aqueous solution of methanol, a 40-75% aqueous solution of ethanol and a 30-80% aqueous solution of acetone to obtain an extract-containing solution; washing the extract-containing solution with chloroform to obtain a washed extract; combining the washed extract with an organic solvent to transfer said washed extract into said organic solvent; removing the orga...

대표
청구항

A process for producing a natural antioxidant composed primarily of (-)-epigallocatechin gallate, (-)-epicatechin gallate, (-)-epigallocatechin and (-)-epicatechin from tea leaves selected from the group consisting of unfermented tea and half-fermented tea comprising: treating said tea leaves with a solvent selected from the group consisting of hot water having a temperature of at least 40°C., a 40-75% aqueous solution of methanol, a 40-75% aqueous solution of ethanol and a 30-80% aqueous solution of acetone to obtain an extract-containing solution; wash...

이 특허를 인용한 특허 피인용횟수: 22

  1. Toba, Masamichi; Uchiyama, Shigeto; Ohta, Reiko; Shimizu, Seiichi; Sakamoto, Shuichi. Antioxidation food product, antioxidation preparation and antioxidation method. USP2005046884415.
  2. Hara Yukihiko (Shizuoka JPX) Asai Hajime (Nagoya JPX) Kitamikado Tadashi (Inuyama JPX) Yamamoto Hajimu (Nagoya JPX) Okushio Kazuo (Shizuoka JPX) Nakamura Kozo (Tokyo JPX). Complex of tea-leaf extract and active aluminum hydroxide. USP1990044913909.
  3. Rombi, Max. Composition for treating obesity and esthetic treatment process. USP2004116814986.
  4. Han Pei CN; Guo Qiyu CN; Chen Bo CN; Zhu Hongwu CN. Fagopyrum cymosum (Trev.) Meisn composition, method to prepare and analyze the same and uses thereof. USP2002096451353.
  5. Han, Pei; Guo, Oiyu; Chen, Bo; Zhu, Hongwu. Fagopyrum cymosum (Trev.) Meisn composition, method to prepare and analyze the same and uses thereof. USP2004046726938.
  6. Rombi, Max. Green tea extract for treating obesity. USP2004126830765.
  7. Chang, Yunik; Lathrop, Robert; Böhm, Erwin; Gander-Meisterernst, Irene; Greger, Regina; Holldack, Johanna; Moebius, Ulrich. Medicament for the treatment of viral skin and tumour diseases. USP2010127858662.
  8. Chang, Yunik; Lathrop, Robert; Böhm, Erwin; Gander-Meisterernst, Irene; Greger, Regina; Holldack, Johanna; Moebius, Ulrich. Medicament for the treatment of viral skin and tumour diseases. USP2017099770406.
  9. Nomura, Takayuki; Kamei, Masatoshi. Method for imparting stress tolerance to plant, plant stress tolerance imparting composition and use thereof. USP2014098841236.
  10. Maruyama, Eizo; Ueoka, Hideaki; Shibata, Keiji. Method for producing purified tea extract. USP2013058445031.
  11. Natale Vittori. Method of isolating mucilaginous polysaccharides and uses thereof. USP2002116482942.
  12. Hara Yukihiko (Shizuoka JPX) Suzuki Tateo (Sendai JPX). Method of treating hypertension. USP1989064840966.
  13. Takashima, Shinichiro; Iwasaki, Masaki; Hashizume, Kojirou; Hosoya, Naoki; Yamamoto, Shinji; Ogura, Yoshikazu; Saito, Jun; Takaya, Hitoshi; Shimizu, Masami; Satake, Norihiko; Hoshino, Eiichi; Sugiyama, Yukiteru. Package drink. USP2012018088429.
  14. Ogura, Yoshikazu; Yamasaki, Seiji; Naitoh, Koichi. Packaged beverages containing β-cyclodextrin. USP2011017862847.
  15. Bombardelli Ezio,ITX ; Morazzoni Paolo,ITX ; Mustich Giuseppe,ITX. Polyphenol fractions of tea, the use thereof and formulations containing them. USP2000086096359.
  16. Bombardelli Ezio,ITX ; Morazzoni Paolo,ITX ; Mustich Giuseppe,ITX. Process for extracting polyphenol fractions of tea and compositions produced therewith. USP1999115989557.
  17. Chang Stephen S. (E. Brunswick NJ) Bao Yongde (New Brunswick NJ). Process for manufacture of natural antioxidant products from tea and spent tea. USP1991085043100.
  18. Maruyama, Eizo; Sugiyama, Yukiteru; Shikata, Kenichi; Shibata, Keiji; Ueoka, Hideaki. Process for producing purified tea extract. USP2017119808023.
  19. Otsuka,Kazuhiro; Mizuno,Wataru; Hanaoka,Koji; Matsui,Yuji; Takatsu,Hideyuki. Production process of packaged green tea beverages. USP2008017323205.
  20. Konishi, Tomoko. Purified green tea extract. USP2012058187656.
  21. Stockfleth, Eggert. Use of a polyphenol for the treatment of a cancerous or pre-cancerous lesion of the skin. USP2015069060998.
  22. Stockfleth, Eggert. Use of a polyphenol for the treatment of a cancerous or precancerous lesion of the skin. USP2013068455022.