Method for the enzymatic liming of skins and hides

Details Method for the enzymatic liming of skins and hides Method for the enzymatic liming of skins and hides

1994-09-23

1996-06-11

Hunter, Jeanette

Chemistry: molecular biology and microbiology

Process of utilizing an enzyme or micro-organism to destroy...

Depilating hides, bating, or hide treating using enzyme or...

435198, 8 9418, 81505, C14C 100, C14C 106, C12N 920

Patent

active

055255094

ABSTRACT:
A method for preparing unhaired hides ready for tanning from hides and skins using proteolytic and lipolytic enzymes in the beamhouse, whereby in at least one of the partial steps of the beamhouse consisting of a) liming in the pH range 11.5-14 and b) bating in the pH range 5-11.5, alkaline lipases (E.C.3.1.3.) having an activity optimum in the pH range 9-11 are added to the aqueous floats corresponding to these partial steps.

REFERENCES:
patent: 4273876 (1981-06-01), Monsheimer
patent: 4960428 (1990-10-01), Christner et al.
patent: 5082585 (1992-01-01), Hessel et al.
patent: 5089414 (1990-05-01), Christer et al.
Christner. CA 118:24082. Abstract of EP 505920 Sep. 30, 1992.
Hu et al, "Use of Alkalene Lipose for Degrading of Pigskin Leather" Chinese Article 1982 (Full Text of Reference 5).
Hu et al, "Use of Alkaline Lipose for Degreasing of Pigskin Leather" Translation of Chinese Article (Ref. 55) 1982.
Christner, J. "The Use of Lipases in the Beamhouse Processes", JALCA, vol. 87 (1992) pp. 128-40.
Zhang et al. "Test Use of Alkaline Lipase in Degreasing Pigskin". CA98 (14):109245h 1982.
Hu et al. "Use of Alkaline Lipase for Degreasing of Pigskin Leather". CA99(18):141865s. 1983.
Yugaguku et al., unidentified source 23(2) (1974), pp. 1-10 "Influence of Surface Active Agents on Detergent Tolerance of Lipases".
Jensen et al., "Lipolase. A Microbial Lipase etc.", Comun. Jorn. Com. Esp. Deterg., 21, 1990 pp. 23-27.
"Enzymatic Degreasing etc.", Novo Nordisk Application Sheet, Nov. 1990.
Kirk-Othmer, Encyc. of Chemical Technology, 3d ed., vol. 9, (1990) pp. 190 and 192.
Ullmann, Encyc. of Industrial Chemistry, 5th ed, vol. A9 (1987) pp. 395 and 397.
Yeshoda et al., Leather Science (Madras) 25(2) (1978) pp. 77-86.
Wood, "The Puering, Bating & Drenching of Skins", Spon, Ltd., London (1912), pp. 137 and 141.
Bienkiewicz, "Physical Chemistry of Leather Making", Krieger Publ. Co., Malabar, Fla. (1983) p. 226.
Leather Technician'a Handbook, Leather Producers' Assn., (1971) pp. 93-95.
Kirk-Othmer. Ency. of Chemical Technology, 3rd ed. vol. 14 (1990) pp 209, lines 40-41.
Ullmann, Ency. of Industrial Chemistry, 5th ed. vol. A9 (1987) p. 414.
"The Chemistry and Technology of Leather", vol. III, Reinhold, New York (1962), pp. 186-191.
"The Chemistry and Technology of Leather", vol. 1, Krieger Publ. Co. Huntington, New York, (1978) p. 359.
Thorstensen, "Practical Leather Technology", Van Nostrand Reinhold, New York (1969) Chapters 6 and 7 pp. 82-110.
Lamb, "The Manufacture of Chrome Leather", Anglo-American Tech. Co. Ltd., London (1923) pp. 33-39 and 105-116.
Catalog of the Sigma Company (1994), p. 627.
Posorske, "Industrial Scale Application of Enzymes etc.", J. Amer. Oil Chem. Soc. 61(11) (1984) pp. 1758-1760.
"Pancreatic Trypsin Novo", product sheets, Novo Nordisk, Feb. 1990 and Aug. 1990.
"Novo Enzymes for the Tanning Industry", information sheet, Novo Nordisk (1972) pp. 2-7 and appendices.
Kirk-Othmer Ency. of Chemical Technology, 3rd ed. vol. 22 (1990) p. 390.
"Novo Enzymes", product sheet for lipolase.TM. of Novo Industri A/S, Dec. 1987.
Kirk-Othmer Encyclopedia of Chemical Technology, 3rd Ed., vol. 8, Wiley & Sons, New York, 1979, pp. 910-916.
Leather Technical Glossary in Six Language, Eduard Roether Verlag, Darmstadt, Germany, p. 186.
Kirk-Othmer, op. cit., 3rd Ed., vol. 9, pp. 190, 202, 216 (1990).
The Merck Index, 9th Edition, Editor Windholz, Merck & Co., Rahway, N.J. 1976, p. 908.
Chemical Abstract, 82 113205g (1975).
Kirk-Othmer, op. cit., 3rd Ed., vol. 5, p. 362 (1990).
Biotechnology, Rehm and Reed, Editors, vol. 7a "Enzyme Technology" J. Kennedy, Editor, VCH, Weinheim, Germany, p .644 (1987).
Kirk-Othmer, op.cit. 3rd Ed., vol. 14, pp. 208, 209 (1981).
Chemical Abstracts Registery 9001-92-73 "Proteinase" (1993).
Chemical Abstracts 97, 57467q (1982).

Affiliated with

Also associated with

Rating

Method for the enzymatic liming of skins and hides does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the enzymatic liming of skins and hides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the enzymatic liming of skins and hides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-351181