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Seed hull extract assimilation agents for agrochemical compositions

  • US 5,525,576 A
  • Filed: 10/03/1994
  • Issued: 06/11/1996
  • Est. Priority Date: 10/15/1991
  • Status: Expired due to Term
First Claim
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1. A composition comprising:

  • (a) an assimilation agent comprising an oxidized extract obtained by a process comprising;

    i. contacting pentosan-containing seed hulls with nitric acid to hydrolyze pentosan polymers in said hulls to form a pentose-containing extract;

    ii. injecting steam into the mixture of pentose-containing extract and hull solids to agitate said mixture while oxidizing at least in part the pentoses into polyhydroxycarboxylic acids in a first oxidized extract stream;

    iii. separating the seed hull solids from the partially oxidized extract stream to make a clarified product;

    iv. contacting the clarified product with additional nitric acid to oxidize at least in further part the pentoses in said first oxidized extract stream into a second oxidized product stream containing a blend of carbohydrates and polyhydroxycarboxylic acids; and

    v. concentrating the second oxidized product stream to produce a concentrated product containing polyhydroxycarboxylic acids and carbohydrates related thereto; and

    (b) an active ingredient containing a plant growth regulating agent, systemic fungicide, or a systemic insecticide for plants.

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