Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C403/00—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone
  • C07C403/24—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains substituted by six-membered non-aromatic rings, e.g. beta-carotene
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23K—FODDER
  • A23K20/00—Accessory food factors for animal feeding-stuffs
  • A23K20/10—Organic substances
  • A23K20/179—Colouring agents, e.g. pigmenting or dyeing agents
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23K—FODDER
  • A23K50/00—Feeding-stuffs specially adapted for particular animals
  • A23K50/80—Feeding-stuffs specially adapted for particular animals for aquatic animals, e.g. fish, crustaceans or molluscs
• • A—HUMAN NECESSITIES
  • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
  • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
  • A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
  • A23L5/40—Colouring or decolouring of foods
  • A23L5/42—Addition of dyes or pigments, e.g. in combination with optical brighteners
  • A23L5/43—Addition of dyes or pigments, e.g. in combination with optical brighteners using naturally occurring organic dyes or pigments, their artificial duplicates or their derivatives
  • A23L5/44—Addition of dyes or pigments, e.g. in combination with optical brighteners using naturally occurring organic dyes or pigments, their artificial duplicates or their derivatives using carotenoids or xanthophylls

Definitions

• This invention relates to a stable oil suspension of astaxanthin with high bioavailability, and the use thereof.
• Astaxanthin belongs to the carotenoids, which is a group of compounds exhibiting a wide range of yellow to red colour nuances. Carotenoids give rise to several of the colour characteristics of plants, and aquatic animals, for example.
• Carotenoids are insoluble in water and are only slightly fat soluble which means that solutions of carotenoids for direct application are unavailable. Furthermore, carotenoids are very sensible to oxidation.
• Astaxanthin is used in fish-farming to impart a pink colour to shrimp, trout, salmon etc.
• the invention comprises thus the following:
• the suspension according to the invention can be prepared by milling of astaxanthin, if desired in the presence of oil.
• astaxanthin is milled without oil, whereafter oil is added and the milling continued, if desired. Oxidation of astaxanthin during the dry milling operation can be reduced by the application of an inert gas atmosphere.
• the astaxanthin particles in the suspension of the invention have a particle size less than 2 ⁇ m, especially less than 1 ⁇ m. More preferred is an astaxanthin particle size less than 0.5 ⁇ m, especially less than 0J ⁇ m.
• the oil can be any animal or vegetable oil suitable for use in feed for aquatic animals.
• oil includes fish oil, such as for example mackerel oil, sprat oil and launce oil.
• Antioxidants such as for example tocopherols, especially ⁇ -tocopherol, butylhydroxyanisole (BHA), butylhydroxytoluene (BHT), ascorbylpalmitate or ethoxyquin, can be added to the suspension to avoid oxidation.
• tocopherols especially ⁇ -tocopherol, butylhydroxyanisole (BHA), butylhydroxytoluene (BHT), ascorbylpalmitate or ethoxyquin
• BHA butylhydroxyanisole
• BHT butylhydroxytoluene
• ascorbylpalmitate or ethoxyquin can be added to the suspension to avoid oxidation.
• Feed for aquatic animals suitably contains 15-30 % fat. Fat can be added by absorption of oil into the feed after extrusion, if desired using vacuum.
• the oil suspension of the invention could suitably be added to the feed using the same procedure, whereby an addition of fat and astaxanthin is obtained in one step.
• the suspension of the invention has a high concentration of astaxanthin and is diluted with additional oil before use.
• the final concentration of astaxanthin in fish feed is suitable between 25 and 100 ppm.
• Astaxanthin OJ g is milled for one hour totally in a Fritsen planetary micro mill pulverisette 7, speed 6. 5 ml of Launce oil ( Esbjerg Fiskeindustri ) is added and milling is continued for 15 min, speed 1.5. Particle size is measured by microscopy and found to be less than 2 ⁇ m for the majority of the particles. This suspension is poured on to a glass and placed in the dark at room temperature for 14 days.
• the small particles show a tendency to agglomeration but nothing indicates that the particles grow when standing. There is no sedimentation of astaxanthin.
• Launce oil solidifies at -18°C.

Landscapes

• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Polymers & Plastics (AREA)
• Engineering & Computer Science (AREA)
• Food Science & Technology (AREA)
• Organic Chemistry (AREA)
• Animal Husbandry (AREA)
• Zoology (AREA)
• Nutrition Science (AREA)
• Health & Medical Sciences (AREA)
• Insects & Arthropods (AREA)
• Marine Sciences & Fisheries (AREA)
• Birds (AREA)
• Feed For Specific Animals (AREA)
• Fodder In General (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=8089837

Family Applications (1)

Country Status (8)

Families Citing this family (12)

Family Cites Families (6)

• 1996
  • 1996-01-30 EP EP96902947A patent/EP0812135A1/en not_active Withdrawn
  • 1996-01-30 NZ NZ301672A patent/NZ301672A/en unknown
  • 1996-01-30 JP JP8523250A patent/JPH10511270A/ja active Pending
  • 1996-01-30 AU AU47156/96A patent/AU4715696A/en not_active Abandoned
  • 1996-01-30 WO PCT/EP1996/000373 patent/WO1996023420A1/en not_active Application Discontinuation
  • 1996-01-30 CA CA002211107A patent/CA2211107A1/en not_active Abandoned
• 1997
  • 1997-07-11 FI FI972961A patent/FI972961A/fi unknown
  • 1997-07-28 NO NO973473A patent/NO973473D0/no unknown

Non-Patent Citations (1)

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