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GB549144A - Improvements in the production of levulose - Google Patents

Improvements in the production of levulose

Info

Publication number
GB549144A
GB549144A GB4387/41A GB438741A GB549144A GB 549144 A GB549144 A GB 549144A GB 4387/41 A GB4387/41 A GB 4387/41A GB 438741 A GB438741 A GB 438741A GB 549144 A GB549144 A GB 549144A
Authority
GB
United Kingdom
Prior art keywords
levulose
dextrose
solution
hydroxide
levulate
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB4387/41A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corn Products Refining Co
Original Assignee
Corn Products Refining Co
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 Corn Products Refining Co filed Critical Corn Products Refining Co
Publication of GB549144A publication Critical patent/GB549144A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
    • C13K11/00—Fructose

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

549,144. Levulose; sugar syrup. CORN PRODUCTS REFINING CO. April 1, 1941. No. 4387. Convention date, Aug. 2, 1940. Drawings to Specification. [Class 127] Crystalline levulose is obtained by converting dextrose-containing solutions by heating with an alkaline catalyst such as oxide or hydroxide of calcium, strontium or barium, hydroxide of sodium or potassium, disodium phosphate, or an organic base such as pyridine, quinoline, or a soluble aliphatic amine, precipitating the levulose with an alkaline earth decomposing the salt and crystallizing the solution of levulose. The dextrose solution may be the solution in water of the pure substance or may be the solution obtained by the acid or enzyme conversion of starch or the mother liquors after separation of crystalline dextrose, or solutions obtained by hydrolysis of cellulose. The conversion with alkaline catalyst is carried out at 40-60‹C. for 6 to 10 hours. The solution after cooling to below 10‹C. is neutralized with alkaline earth and may be seeded with crystals of calcium levulate. The separated levulate is washed with lime water and decomposed with sulphuric acid. The mother liquor may be concentrated and crystallized to separate dextrose. The mother liquor from the crystallization of levulose may be mixed with dextrose to yield a syrup similar to invert sugar syrup. Specification 549,143 is referred to.
GB4387/41A 1940-08-02 1941-04-01 Improvements in the production of levulose Expired GB549144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US549144XA 1940-08-02 1940-08-02

Publications (1)

Publication Number Publication Date
GB549144A true GB549144A (en) 1942-11-09

Family

ID=21994339

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4387/41A Expired GB549144A (en) 1940-08-02 1941-04-01 Improvements in the production of levulose

Country Status (1)

Country Link
GB (1) GB549144A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487121A (en) * 1942-01-13 1949-11-08 Union Starch & Refining Compan Extra sweet corn syrup
US2593021A (en) * 1949-09-30 1952-04-15 John S Goodell Tractor cultivator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487121A (en) * 1942-01-13 1949-11-08 Union Starch & Refining Compan Extra sweet corn syrup
US2593021A (en) * 1949-09-30 1952-04-15 John S Goodell Tractor cultivator

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