WO2016159394A8 - New eco-friendly and clean method of processing hides and fish skins into leather using alkaline protease enzyme - Google Patents

New eco-friendly and clean method of processing hides and fish skins into leather using alkaline protease enzyme Download PDF

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Publication number
WO2016159394A8
WO2016159394A8 PCT/KE2016/000047 KE2016000047W WO2016159394A8 WO 2016159394 A8 WO2016159394 A8 WO 2016159394A8 KE 2016000047 W KE2016000047 W KE 2016000047W WO 2016159394 A8 WO2016159394 A8 WO 2016159394A8
Authority
WO
WIPO (PCT)
Prior art keywords
leather
dehairing
hides
fish
friendly
Prior art date
Application number
PCT/KE2016/000047
Other languages
French (fr)
Other versions
WO2016159394A1 (en
Inventor
Chisutia Wanyonyi Wycliffe
Mwanza Shiundu Paul
Mmari Onyari John
Jackim Mulaa Francis
Original Assignee
University Of Nairobi
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 University Of Nairobi filed Critical University Of Nairobi
Publication of WO2016159394A1 publication Critical patent/WO2016159394A1/en
Publication of WO2016159394A8 publication Critical patent/WO2016159394A8/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C1/00—Chemical treatment prior to tanning
    • C14C1/06—Facilitating unhairing, e.g. by painting, by liming
    • C14C1/065—Enzymatic unhairing

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

The present invention relates to an eco-friendly bio-processing method for the processing of hides and fish skin from Nile Perch (Lates niloticus)) into leather, comprising mainly enzymatic treatment of the hide or skin with crude alkaline proteases enzyme in the pretanning steps. This method produces fish leather with moire patterns unique to fish skin created through the descaling process, which in turn provide beauty totally different from that of general leather. According to this invention, the method for dehairing of hides or skins and descaling fish skin has been greatly simplified, pollution impact on the environment reduced in a maximum way and at the same time does not cause damage to grain. Moreover, the valuable hair and scales removed during dehairing or descaling process are readily recovered from the enzyme liquor while still in good condition suitable for further use. The final leather product exhibit better qualities such as softness, toughness and pliability. This invention completely eliminates use of sodium sulfide and lime in dehairing as well as greatly reducing the pungent smell which is the characteristic smell of tanneries across the world.
PCT/KE2016/000047 2015-04-01 2016-03-31 New eco-friendly and clean method of processing hides and fish skins into leather using alkaline protease enzyme WO2016159394A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KE223115 2015-04-01
KEKE/P/2015/2231 2015-04-01

Publications (2)

Publication Number Publication Date
WO2016159394A1 WO2016159394A1 (en) 2016-10-06
WO2016159394A8 true WO2016159394A8 (en) 2016-10-27

Family

ID=57003010

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KE2016/000047 WO2016159394A1 (en) 2015-04-01 2016-03-31 New eco-friendly and clean method of processing hides and fish skins into leather using alkaline protease enzyme

Country Status (1)

Country Link
WO (1) WO2016159394A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114230855A (en) * 2021-12-18 2022-03-25 河北省微生物研究所有限公司 Method for recycling wool fibers by using complex enzyme preparation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1011668B (en) * 1973-04-28 1977-02-10 Roehm Gmbh PROCEDURE OF PURGE OF THE SKINS
DE4332785A1 (en) * 1993-09-27 1995-03-30 Roehm Gmbh Improved enzyme-assisted liming process
GB2518928B (en) * 2013-05-15 2017-03-01 New Zealand Leather And Shoe Res Ass Method of depilation

Also Published As

Publication number Publication date
WO2016159394A1 (en) 2016-10-06

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