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TW338710B - Hydroxycitric acid concentrate and process of preparation thereof - Google Patents

Hydroxycitric acid concentrate and process of preparation thereof

Info

Publication number
TW338710B
TW338710B TW083108196A TW83108196A TW338710B TW 338710 B TW338710 B TW 338710B TW 083108196 A TW083108196 A TW 083108196A TW 83108196 A TW83108196 A TW 83108196A TW 338710 B TW338710 B TW 338710B
Authority
TW
Taiwan
Prior art keywords
hydroxycitric acid
weight
preparation
acid
acid concentrate
Prior art date
Application number
TW083108196A
Other languages
English (en)
Inventor
Alexander Moffett Scott
Kumar Bhandari Ashlk
Ravihdranath Bhagavathula
Original Assignee
Renaissance Herbs Inc
Vittal Mallya Scient Res Found
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renaissance Herbs Inc, Vittal Mallya Scient Res Found filed Critical Renaissance Herbs Inc
Application granted granted Critical
Publication of TW338710B publication Critical patent/TW338710B/zh

Links

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
    • A23G3/34—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof
    • A23G3/36—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof characterised by the composition containing organic or inorganic compounds
    • A23G3/364—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof characterised by the composition containing organic or inorganic compounds containing microorganisms or enzymes; containing paramedical or dietetical agents, e.g. vitamins
    • A23G3/368—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof characterised by the composition containing organic or inorganic compounds containing microorganisms or enzymes; containing paramedical or dietetical agents, e.g. vitamins containing vitamins, antibiotics
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/725—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of liquids or solids
    • A23B2/729—Organic compounds; Microorganisms; Enzymes
    • A23B2/7295—Antibiotics
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/725—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of liquids or solids
    • A23B2/729—Organic compounds; Microorganisms; Enzymes
    • A23B2/742—Organic compounds containing oxygen
    • A23B2/754—Organic compounds containing oxygen containing carboxyl groups
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L19/00—Products from fruits or vegetables; Preparation or treatment thereof
    • A23L19/03—Products from fruits or vegetables; Preparation or treatment thereof consisting of whole pieces or fragments without mashing the original pieces
    • A23L19/07—Fruit waste products, e.g. from citrus peel or seeds
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Preparation or treatment thereof
    • A23L2/52—Adding ingredients
    • A23L2/68—Acidifying substances
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Preparation or treatment thereof
    • A23L2/70—Clarifying or fining of non-alcoholic beverages; Removing unwanted matter
    • A23L2/78—Clarifying or fining of non-alcoholic beverages; Removing unwanted matter by ion-exchange
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/10—Natural spices, flavouring agents or condiments; Extracts thereof
    • A23L27/12—Natural spices, flavouring agents or condiments; Extracts thereof from fruit, e.g. essential oils
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/82—Acid flavourants
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L7/00—Cereal-derived products; Malt products; Preparation or treatment thereof
    • A23L7/10—Cereal-derived products
    • A23L7/117—Flakes or other shapes of ready-to-eat type; Semi-finished or partly-finished products therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Nutrition Science (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Microbiology (AREA)
  • Inorganic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Confectionery (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
TW083108196A 1994-08-24 1994-09-06 Hydroxycitric acid concentrate and process of preparation thereof TW338710B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/295,281 US5536516A (en) 1994-08-24 1994-08-24 Hydroxycitric acid concentrate and food products prepared therefrom

Publications (1)

Publication Number Publication Date
TW338710B true TW338710B (en) 1998-08-21

Family

ID=23137034

Family Applications (1)

Application Number Title Priority Date Filing Date
TW083108196A TW338710B (en) 1994-08-24 1994-09-06 Hydroxycitric acid concentrate and process of preparation thereof

Country Status (11)

Country Link
US (2) US5536516A (zh)
EP (1) EP0782399B1 (zh)
JP (1) JP4083216B2 (zh)
KR (1) KR100390036B1 (zh)
CN (1) CN1082354C (zh)
AU (1) AU3412995A (zh)
BR (1) BR9508766A (zh)
CA (1) CA2198376C (zh)
DE (1) DE69523614T2 (zh)
TW (1) TW338710B (zh)
WO (1) WO1996005741A1 (zh)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5536516A (en) * 1994-08-24 1996-07-16 Renaissance Herbs, Inc. Hydroxycitric acid concentrate and food products prepared therefrom
WO1996036585A1 (en) * 1995-05-15 1996-11-21 Sabinsa Corporation A new process for the production of potassium hydroxy citric acid, and compositions containing the potassium hydroxy citric acid
US6770782B1 (en) * 1995-05-15 2004-08-03 Sabinsa Corporation Process for the production of potassium hydroxy citric acid, and compositions containing the potassium hydroxy citric acid
IT1276253B1 (it) 1995-12-15 1997-10-27 Sigma Tau Ind Farmaceuti Composizione farmaceutica contenente l-carnitina o alcanoil l-carnitine per la prevenzione ed il trattamento di stati morbosi
ES2106689B1 (es) * 1996-04-18 1998-05-16 Cabo Soler Jose Nueva formulacion a base de acido hidroxicitrico (sales y derivados) y sus aplicaciones cosmeticas y farmaceuticas por via topica percutanea.
IT1284636B1 (it) * 1996-04-26 1998-05-21 Sirc S P A Natural & Dietetic Uso di integratore dietetico comprendente chitosano, idrossicitrato di garcinia, cambogia e cromo organico nel trattamento della
FR2754820B1 (fr) * 1996-10-22 1999-10-22 Ravi Shrivastava Le (-)hydroxycitrate de magnesium, procede de preparation, applications, et compositions notamment pharmaceutiques le renfermant
IT1285809B1 (it) * 1996-10-23 1998-06-24 Sirc S P A Natural & Dietetic Preparato dietetico contenente chitosano e altre fibre solubili in associazione con acido ascorbico, cromo organico, vanadio e
EP0974349A4 (en) * 1997-02-13 2001-03-14 Nippon Shinyaku Co Ltd ATHLETIC ENDURANCE INCREASING AGENT
JP2001527022A (ja) * 1997-07-14 2001-12-25 ラジュ、ジー・ガンガ ヒドロキシクエン酸組成物、前記組成物から製造された補助医薬品及び補助食品及び食品並びに体重を低減させることにおけるそれらの使用方法
US6160172A (en) 1997-08-27 2000-12-12 Vittal Mallya Scientific Research Foundation Soluble double metal salt of group IA and IIA of (-) hydroxycitric acid, process of preparing the same and its use in beverages and other food products without effecting their flavor and properties
NO982818L (no) * 1998-06-18 2000-03-15 Pemby Ltd Syntetisk fremstilt preparat for behandling og/eller profylakse av overvekt, samt anvendelse derav
IN190387B (zh) * 1998-08-03 2003-07-26 Dept Of Science And Technology
WO2000015051A1 (en) * 1998-09-14 2000-03-23 Interhealth Nutraceuticals, Inc. Hydroxycitric acid compositions
US6503905B1 (en) * 1998-12-29 2003-01-07 Pfizer Inc 3,3-biarylpiperidine and 2,2-biarylmorpholine derivatives
EP1154978A1 (en) * 1999-02-18 2001-11-21 Vittal Mallya Scientific Research Foundation Soluble double metal salt of group ia and iia of (-) hydroxycitric acid
US6447807B1 (en) 1999-09-14 2002-09-10 Dallas L. Clouatre Potassium (-)-hydroxycitric acid methods for pharmaceutical preparations for stable and controlled delivery
US7015250B2 (en) * 2000-02-09 2006-03-21 Glykon Technologies Group, Llc Methods and pharmaceutical preparations for normalizing blood pressure with (-)-hydroxycitric acid
IN192481B (zh) 2000-10-03 2004-04-24 Dept Of Science & Technology
IN192471B (zh) 2000-10-03 2004-04-24 Dept Of Science & Technology
US20040157929A1 (en) * 2002-04-01 2004-08-12 Ohia Sunny E. Method for increasing serotonin levels in a person by administration of a composition incorporating(-)hydroxycitric acid, and related compositions thereof
US6476071B1 (en) * 2001-05-07 2002-11-05 Dallas L. Clouatre Correcting polymorphic metabolic dysfunction with (−)-hydroxycitric acid
US6482858B1 (en) 2001-06-20 2002-11-19 Dallas L Clouatre (−)-hydroxycitric acid for wound healing and immunomodulation
US6441041B1 (en) 2001-06-20 2002-08-27 Dallas L. Clouatre (-)-hydroxycitric acid for the prevention of osteoporosis
US7119110B2 (en) * 2001-10-05 2006-10-10 Interhealth Nutraceuticals Incorporated Method and composition for preventing or reducing the symptoms of insulin resistance syndrome
US20030119913A1 (en) * 2001-12-20 2003-06-26 Ohia Sunny E. Method for increasing serotonin levels in a person by administration of a composition incorporating (-)-hydroxycitric acid, and related compositions thereof
US20050232952A1 (en) * 2002-03-01 2005-10-20 Gregory Lambert Self emulsifying drug delivery systems for poorly soluble drugs
AU2003225196A1 (en) * 2002-04-30 2003-11-17 Unibar Corporation Hydroxycitric acid salt composition and method of making
US8394856B2 (en) * 2002-07-02 2013-03-12 Glykon Technologies Group, Llc (-)-Hydroxycitric acid for controlling inflammation
US7189416B2 (en) * 2002-11-23 2007-03-13 Glykon Technologies Group, Llc Method for stable and controlled delivery of (-)-hydroxycitric acid
WO2004085462A2 (en) * 2003-03-21 2004-10-07 Interhealth Nutraceuticals Incorporated Method and composition for decreasing ghrelin levels
WO2004084654A1 (en) * 2003-03-26 2004-10-07 Council Of Scientific And Industrial Research A process for the encapsulation of garcinia extract
JP3655292B2 (ja) * 2003-04-14 2005-06-02 株式会社日立製作所 粒子線照射装置及び荷電粒子ビーム照射装置の調整方法
AU2003241151A1 (en) 2003-05-19 2004-12-03 Indfrag Limited A novel composition of complex metal salt of garcinia acid, a process for preparing the same and use thereof
EP1633328A4 (en) * 2003-05-29 2008-07-09 Glykon Technologies Group Llc METHOD AND COMPOSITION FOR STABLE AND CONTROLLED ADMINISTRATION OF (-) - HYDROXYCITRIC ACID
US7261769B2 (en) * 2003-07-03 2007-08-28 Unibar Corporation Stabilized anthocyanin extract from Garcinia indica
US20050009919A1 (en) * 2003-07-07 2005-01-13 Clouatre Dallas L. Treating cachexia and excessive catabolism with (-)-hydroxycitric acid
JP2007505129A (ja) * 2003-09-11 2007-03-08 グリュコン テクノロジーズ グループ エルエルシー （−）−ヒドロキシクエン酸の腸溶性送達物
AU2003288610B2 (en) * 2003-12-22 2010-06-17 Council Of Scientific And Industrial Research An athermal process for the concentration of Garcinia extract
US20050136143A1 (en) * 2003-12-22 2005-06-23 Council Of Scientific And Industrial Research Athermal process for the concentration of Garcinia extract
US7208615B2 (en) 2004-03-09 2007-04-24 Laila Impex Triple mineral salts of (-)-hydroxycitric acid and processes for preparing the same
US20050215644A1 (en) * 2004-03-19 2005-09-29 Interhealth Nutraceuticals, Inc. Methods for increasing neurotransmitter levels using hydroxycitric acid
WO2005099679A1 (en) * 2004-04-19 2005-10-27 Ganga Raju Gokaraju New double salts of (-)-hydroxycitric acid and a process for preparing the same
US20060025482A1 (en) * 2004-07-29 2006-02-02 Clouatre Dallas L (-)-Hydroxycitric acid for the modulation of angiotensin-converting enzyme
US20060025483A1 (en) * 2004-07-29 2006-02-02 Clouatre Dallas L (-)-Hydroxycitric acid for protection against soft tissue and arterial calcification
WO2006033476A1 (en) 2004-09-24 2006-03-30 Showa Denko K.K. Hydroxycitric acid derivatives and skin external preparations containing the same
US20080020100A1 (en) * 2006-07-20 2008-01-24 John Alan Madsen Fruit snack product
US20080095867A1 (en) * 2006-10-19 2008-04-24 Renaissance Herbs, Inc. Hydroxycitric acid compositions from garcinia cambogia and hibiscus sp., methods of making, and therapeutic uses of same
WO2008099413A2 (en) * 2007-02-16 2008-08-21 Vittal Mallya Scientific Research Foundation High purity (-) hydroxycitric acid metal salt derivatives and method of preparation of the same
WO2010006443A1 (en) * 2008-07-18 2010-01-21 Sun-Rype Products Ltd. Method and system for producing viscous fruit product
EP3736281A1 (en) 2011-02-18 2020-11-11 Bio-Rad Laboratories, Inc. Compositions and methods for molecular labeling
WO2016132268A1 (en) * 2015-02-16 2016-08-25 Phytotech Extracts Private Limited Slim and aqua concentrate having standardized and triple salt stabilized (-)-hydroxycitric acid from garcinia cambogia extract for making concentrate and slimming water and their derived product for weight management
CN104725218A (zh) * 2015-03-02 2015-06-24 李玉山 一种藤黄果中羟基柠檬酸的提取纯化方法
CN104844447B (zh) * 2015-04-15 2017-01-18 义乌章舸生物工程有限公司 一种以藤黄果为原料制备高纯度羟基柠檬酸的方法
CN115536521A (zh) * 2022-07-17 2022-12-30 李玉山 一种藤黄果中羟基柠檬酸的制备方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US463902A (en) * 1891-11-24 Feeder for heaters
US3764692A (en) * 1970-09-30 1973-10-09 Hoffmann La Roche Method of treating obesity
IL39710A (en) * 1972-06-19 1975-04-25 Imi Inst For Res & Dev Recovery of acids from aqueous solutions by solvent extraction
US4334095A (en) * 1980-10-06 1982-06-08 Miles Laboratories, Inc. Extraction of organic acids from aqueous solutions
US4522836A (en) * 1983-05-19 1985-06-11 Mitco Water Laboratories, Inc. Upflow ion exchange treatment of natural edible juices containing high acidity and suspended solids
US4643902A (en) * 1984-09-07 1987-02-17 The Texas A&M University System Method of producing sterile and concentrated juices with improved flavor and reduced acid
US5536516A (en) * 1994-08-24 1996-07-16 Renaissance Herbs, Inc. Hydroxycitric acid concentrate and food products prepared therefrom

Also Published As

Publication number Publication date
CN1162910A (zh) 1997-10-22
JPH10504826A (ja) 1998-05-12
US5656314A (en) 1997-08-12
EP0782399B1 (en) 2001-10-31
BR9508766A (pt) 1997-11-11
JP4083216B2 (ja) 2008-04-30
DE69523614T2 (de) 2002-07-18
EP0782399A4 (en) 1998-06-03
KR970705346A (ko) 1997-10-09
DE69523614D1 (de) 2001-12-06
AU3412995A (en) 1996-03-14
CA2198376A1 (en) 1996-02-29
CA2198376C (en) 2011-01-04
WO1996005741A1 (en) 1996-02-29
CN1082354C (zh) 2002-04-10
EP0782399A1 (en) 1997-07-09
US5536516A (en) 1996-07-16
KR100390036B1 (ko) 2003-10-30

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